Showing posts with label hybrid. Show all posts
Showing posts with label hybrid. Show all posts

Thursday, November 27, 2008

The New Ford Fusion Hybrid












"Offering consumers more fuel-efficient vehicle choices, including improving and increasing our hybrid vehicle offerings, is part of Ford's broad plan to deliver technology solutions for affordable fuel economy for millions," Kuzak said.

"With the new Ford Fusion and Mercury Milan hybrids, we are now able to offer even better range of travel on battery power at a greater speed, thanks to a more efficient, seamless transition between the battery-powered motor and gasoline-driven engine," he said. "These new hybrids will exceed expectations on all fronts - fuel efficiency, comfort, convenience and drivability."

The Ford Hybrid team has developed a powertrain system that combines the best attributes of the gasoline engine and electric battery-driven motors to deliver the optimal experience for the customer in terms of driving performance and fuel economy. Additionally, the propulsion system for the Ford Fusion Hybrid and Mercury Milan Hybrid transitions between gas and electric power and back more efficiently and seamlessly.

The overall system upgrade allows the Ford Fusion Hybrid and Mercury Milan Hybrid to operate longer at higher speeds in electric mode. The hybrid vehicles can operate up to 47 mph in pure electric mode, approximately twice as fast as some competitors. Plus, the city driving range on a single tank of gas is expected to be more than 700 miles.

The next-generation hybrid system features:

  • New 2.5-liter 4-cylinder engine (155 horsepower/136 lb.-ft. of torque) running the proven Atkinson cycle mated to an electronically-controlled continuously variable transmission or e-CVT.
  • Intake Variable Cam Timing (iVCT), which allows the vehicle to more seamlessly transition from gas to electric mode and vice-versa. The spark and cam timing are varied according to the engine load to optimize efficiency and emissions.
  • Enhanced electronic throttle control reduces airflow on shutdowns, reducing fueling needs on restarts.
  • Wide-band lambda sensor analyzes the air-fuel ratio and adjusts the lean/rich mixture accordingly to keep the system in balance and to minimize emissions.
  • A new smaller, lighter nickel-metal hydride battery has been optimized to produce 20 percent more power. Improved chemistry allows the battery to be run at a higher temperature and it is cooled using cabin air.
  • An added variable voltage converter boosts the voltage to the traction battery to operate the motor and generator more efficiently.
  • A new high-efficiency converter provides 14 percent increased output to accommodate a wider array of vehicle features.
  • Smarter climate control system monitors cabin temperature and only runs the gas engine as needed to heat the cabin; it also includes an electric air conditioning compressor to further minimize engine use.
  • The regenerative brake system captures the energy normally lost through friction in braking and stores it. Nearly 94 percent energy recovery is achieved by first delivering full regenerative braking followed by friction brakes during city driving.
  • A simulator brake actuation system dictates brake actuation and delivers improved brake pedal feel compared to the previous generation braking system.

"Because our hybrid can run at a much higher speed in electric mode, you can do so much more in city-driving situations," said Gil Portalatin, Hybrid Applications Manager. "Under the right conditions, you can drive in your neighborhood or mall parking lots without using a drop of gasoline."

The Ford Fusion Hybrid also offers drivers a way to be more connected to the hybrid driving experience thanks to Ford's SmartGauge with EcoGuide, a unique instrument cluster execution that helps coach them on how to optimize performance of their hybrid.

SmartGauge with EcoGuide features two, high-resolution, full-color liquid crystal display (LCD) screens on either side of the analog speedometer that can be configured to show different levels of information, including fuel and battery power levels, average and instant miles-per-gallon.

EcoGuide uses a multi-layered approach to coach the driver to maximum fuel efficiency.

A tutorial mode built into the display that helps the driver learn about the instrument cluster and the hybrid in a whimsical way that does not overpower. Technical enthusiasts will love the detailed gauges that will help them learn to become more efficient in their driving. Everyday drivers will love another new feature in this same gauge cluster. Called "Efficiency Leaves," the system "grows" leaves and vines on-screen to reward customers for efficient driving.

Drivers can choose one of four data screens to choose the information level displayed during their drives. They are:

  • Inform: Fuel level and battery charge status
  • Enlighten: Adds electric vehicle mode indicator and tachometer
  • Engage: Adds engine output power and battery output power
  • Empower: Adds power to wheels, engine pull-up threshold and accessory power consumption

All levels can show instant fuel economy, fuel economy history, odometer, engine coolant temperature, what gear the car is in and trip data (trip fuel economy, time-elapsed fuel economy and miles to empty). The engine coolant temperature indicator turns green when engine conditions are warm enough to allow engine pull-down.

Several other elements help differentiate the Ford Fusion Hybrid from its gas-powered sibling, including unique hybrid "road and leaf" badging on both sides and the rear of the vehicle; unique 17-inch, eight-spoke wheels; eco-friendly seat fabric made from post-industrial 100 percent recycled materials; and a standard 110-volt power outlet.

Tuesday, September 30, 2008

Concept: BMW 7-Series ActiveHybrid












Introducing this Concept Car based on the new BMW 7-Series BMW is clearly demonstrating the potential offered by the most advanced hybrid technology available today. The BMW 7-Series ActiveHybrid Concept comes with hybrid components tailored precisely to the character of this unique saloon, offering driving comfort, everyday motoring qualities and driving safety of the supreme standard only the BMW 7-Series is able to provide.

In addition, the BMW ActiveHybrid technology featured in the Concept Car reduces both fuel consumption and emissions by 15 per cent versus the same car with a combustion engine and offers a standard of driving dynamics clearly exceeding all series models with hybrid technology presented so far. The BMW 7-Series ActiveHybrid Concept combines an eight-cylinder gasoline engine and an electric motor developing 15 kW/20 hp and maximum torque of 210 Newton-metres/155 lb-ft as a mild hybrid concept. Electric power is generated by a particularly powerful variant of Brake Energy Regeneration already featured in the BMW Group's regular production cars. The energy generated in this way is then stored in a lithium-ion battery fitted in accordance with the package of the car beneath the luggage compartment.

The perfect starting point: the world's most Efficient luxury performance saloon.

The BMW 7-Series ActiveHybrid Concept is based on the new BMW 7-Series already ranking right at the top in its class in standard trim in terms of efficiency. The new luxury performance saloon from the world's most successful manufacturer of premium cars thus lives out the demanding objectives of the BMW EfficientDynamics development strategy in particularly convincing style also in this segment.

Compared with their predecessors, all models in the new BMW 7-Series stand out in providing both enhanced performance as well as a significant reduction of fuel consumption and exhaust emissions. In their respective performance class, the three engines available right from the start upon the market launch of the new 7-Series rank right at the top worldwide in terms of efficiency. In addition, all models in the BMW 7-Series come as standard with a wide range of BMW EfficientDynamics technologies including Brake Energy Regeneration, on-demand control of the engine's ancillary units, intelligent lightweight construction, active aerodynamics provided by air flap control, and tyres with reduced roll resistance. And last but certainly not least, all engine variants in the new BMW 7-Series comply in full with the EU 5 emission standard.

Given these qualities, the new BMW 7-Series from the start offers an ideal foundation for setting the standard worldwide both in the luxury segment and in the hybrid market through an optimum combination of the most advanced BMW ActiveHybrid technology. Another essential feature of the BMW 7-Series ActiveHybrid Concept is that this unique model offers such a significant increase in efficiency over the regular production model without in any way giving up the well-known qualities of BMW's luxury saloon.

Not to be seen from outside, BMW ActiveHybrid technology offers the driver the significant benefits of a new drive concept without in any way influencing the motoring comfort, luxurious ambience, and safety this truly outstanding saloon is able to provide. And when it comes to everyday driving qualities, the concept is once again just right for full enjoyment and driving pleasure in every respect, without the slightest restrictions.

BMW ActiveHybrid technology integrated the intelligent way.

Presenting the BMW 7-Series ActiveHybrid Concept, BMW is introducing a hybrid car which, through its harmoniously balanced drive components, will fit perfectly into the model range of BMW's new luxury performance saloons. The driving experience and motoring comfort reflect the character of this outstanding model line, with new highlights in terms of both driving dynamics and efficiency - as on BMW's conventional model variants, too. Quite simply, this is because hybrid technology BMW-style stands for superior dynamics combined with outstanding efficiency forming a perfect symbiosis with the sheer supremacy of the BMW 7-Series.

All this is made possible by combining an eight-cylinder petrol engine for the first time with a mild hybrid concept. Specifically this approach has been chosen here since the savings potential offered by hybrid technology increases with the output and performance of the combustion engine used, and because large-capacity power units are of particular significance in the premium segment.

Focusing initially on smaller cars, BMW has already introduced solutions in the context of EfficientDynamics serving to significantly reduce fuel consumption and not in any way increasing the cost of ownership for the customer. BMW's current diesel models in this segment, for example, thanks to BMW EfficientDynamics, ensure fuel consumption and emission ratings achieved by other manufacturers with their hybrid cars only on a far lower level of output and performance.

In the medium term the development of hybrid systems by the BMW Group tailored to individual models will also lead to solutions in segments offering significant advantages in both fuel economy and driving dynamics so typical of BMW. And at the same time the larger number of models produced will help to reduce the additional cost of hybrid technology.

Consistent optimisation: BMW ActiveHybrid and the V8 power unit with Twin Turbo and High Precision Injection.

Like all power units in BMW production cars, the combustion engine featured in the BMW 7-Series ActiveHybrid Concept has been developed in the context of BMW EfficientDynamics. In the BMW 750i this all-aluminium power unit offers all the qualities typical of an eight-cylinder in incomparably sporting and, at the same time, comfortable style, combining power and traction from low engine speeds with impressive pulling force throughout a wide range of engine revs.

The power and performance characteristics of the new V8 power unit result primarily from BMW's innovative Twin Turbo technology. This unique technology featured for the first time on an eight-cylinder gasoline engine, with two turbochargers not fitted at the outside, but rather directly in the V-section of the engine and supplying four cylinders with compressed air in each case, ensures unparalleled spontaneity in responding to the accelerator pedal.

High Precision Injection, in turn, ensures highly Efficient use of fuel, the second generation of direct gasoline injection introduced by BMW incorporating piezo-injectors fitted in the cylinder head directly next to the spark plugs and delivering fuel to the combustion chambers at a pressure of 200 bar.

This concept alone makes the supply and dosage of fuel extremely precise, the V8 power unit with Twin Turbo and High Precision Injection achieving the highest level of efficiency worldwide in the eight-cylinder segment.

This outstanding efficiency is also attributable to the use of BMW EfficientDynamics in and around the engine, with features such as Brake Energy Regeneration, on-demand management and control of ancillaries including an a/c compressor operating only when required, and the use of on-demand pump technology on the car's suspension control systems.

This intelligent energy management also comprises the electrification wherever possible of comfort functions running on electrical energy generated in particular by Brake Energy Regeneration.

Use of electric power generated without consuming fuel in the interest of even greater efficiency.

Given all these qualities, intelligent alternator control ensures the generation of electricity from energy otherwise wasted in the brake system as heat dissipated into the environment. Now, therefore, the fuel contained in the energy burnt is used to a much higher degree for ensuring genuine driving dynamics on the road, helping to improve the car's acceleration to an even higher level and optimising the efficiency of the drive system under all load conditions.

The principle of Brake Energy Regeneration is applied in the BMW 7-Series ActiveHybrid Concept more consistently than in any production vehicle so far, giving the car an unusually high standard of all-round efficiency and fuel economy. In this case the conventional alternator is replaced by the electric motor fully integrated in the transmission housing and delivering electricity in overrun and under application of the brakes through the likewise fully integrated power electronics to the lithium-ion battery.

The electric motor integrated in the transmission housing thus ensures far greater efficiency in the generation of electric power than an alternator drawing energy directly from the combustion engine and, as a result, reducing its overall standard of efficiency.

BMW ActiveHybrid technology is also superior to a conventional alternator through its own, inherent efficiency, the energy yield produced by the electric motor through Brake Energy Regeneration alone exceeding the normal standard roughly ten times.

The innovative energy storage technology of the lithium-ion battery featured in the BMW 7-Series ActiveHybrid Concept also provides the option to store a much greater amount of electrical energy available virtually free-of-charge, then providing this energy on a permanent basis for all kinds of vehicle functions and therefore exceeding the performance of conventional battery units by far. The progress achieved by BMW in the area of energy storage thus allows electrical operation of ancillary units to an extent far beyond the standard possible so far in a production car.

A further point is that the BMW 7-Series ActiveHybrid Concept uses electrical energy to an even higher degree also for additional functions ranging all the way to extra power provided by the electric motor within the mild hybrid concept in support of the car's primary drive system. This is also made possible by the specific position of the electric motor in the transmission housing, where it is able to offer an additional power feed.

A 120V on-board network serves to meet further purposes and requirements, operating in parallel to the conventional 12V network. And with its output of 15 kW, the electric motor supports the combustion engine in generating dynamic power serving to drive the car. Since the energy used in the process is delivered by Brake Energy Regeneration without any additional consumption of fuel, the mild hybrid concept gives the car extra dynamics combined with a significant improvement of efficiency.

This additional power and reduction of the load acting on the combustion engine throughout the entire range of engine speed and running conditions enables the Concept Car featuring BMW ActiveHybrid technology to consistently continue the BMW EfficientDynamics development strategy raised in this way to an even higher level.

A harmonious concept: BMW ActiveHybrid in the BMW 7-Series.

The harmonious overall concept of the BMW 7-Series ActiveHybrid Concept is just as impressive as the progressive technology of the car and its efficiency in reducing both fuel consumption and emissions. All components are carefully matched to one another, coming together to form one fascinating, trendsetting whole.

The car itself offers all the qualities of a modern luxury saloon, setting standards through the space available and the exclusive ambience within the interior as well as with its drivetrain and suspension technology allowing an outstanding combination of dynamic performance and supreme motoring comfort.

BMW ActiveHybrid technology specially conceived for the saloon serves to enhance the driving experience in genuine style typical of a BMW 7-Series and at the same time achieves a new level of all-round efficiency. Hence, the Concept Car offers improvements and options raising the very favourable balance of performance and fuel consumption already offered on the series-production BMW 750i to a significantly higher standard.

The arrangement of the hybrid components likewise serves to enhance the degree of efficiency and promote the driving experience even further. Positioned appropriately within compact dimensions in the transmission housing, the electric motor optimises both the generation of electricity and the drive power delivered by the combustion engine. Housed in the rear of the car, in turn, the lithium-ion batteries offer an ideal solution in terms of both everyday driving qualities, the balance of the overall vehicle, and safety.

Ultra-modern energy storage technology: lithium-ion battery with superior capacity and stable cycles.

Using a lithium-ion battery, BMW is taking yet another step into the future in the particularly intense and flexible use of electric power in the car. As a rule, the energy delivered by Brake Energy Regeneration must be fed to a storage unit at all times and must be available - depending on driving conditions - in different cycles, whenever required. In addition, storage capacity must be sufficiently great for the car to cover longer distances without application of the brakes or running in overrun, while at the same time the supply of electric power must not be interrupted.

This is why BMW uses AGM (Absorbent Glass Mat) batteries on regular production cars featuring Brake Energy Regeneration, that is cars running in frequent and irregular charge and discharge cycles without losing energy in the process. To meet the requirements of a mild hybrid concept, on the other hand, a car needs a high-voltage energy storage unit with significantly higher output and performance. The system developed for the BMW 7-Series ActiveHybrid Concept therefore uses the most advanced lithium-ion technology fulfilling the greatest demands in terms of battery capacity and lasting performance.

The lithium-ion battery has proven its particularly high storage capacity and resistance to charge and discharge cycles for a long time in many other areas, for example in the mobile phone and in laptops. The energy storage unit featured in the BMW 7-Series ActiveHybrid Concept therefore opens up a new perspective in the use of this technology under the particularly demanding conditions prevailing in a motor vehicle.

Intelligent energy management with a lithium-ion battery, an AGM battery and two on-board networks.

To ensure Efficient energy management meeting all of the driver's and passengers' requirements, the BMW 7-Series ActiveHybrid Concept comes with two on-board network systems carefully matched to one another. In addition to the conventional 12V network supplied with power by the AGM starter battery, BMW's new Concept Car features an innovative 120V network feeding power from the electric motor to the appropriate components with the help of the lithium-ion battery.

Through the 120V on-board network, the lithium-ion battery featured in the BMW 7-Series ActiveHybrid Concept is able to supply power to a particularly large number of electrical components. A further point is that the high-voltage power network provides the foundation for using a high-performance electrical drive system. Contrary to the conventional on-board network, this also means the option to supply power directly to, say, the a/c compressor.

The range of functions already driven electrically today in BMW's production models extends from the ventilation and air conditioning units through the lights, entertainment, navigation and communication systems all the way to the coolant pump and servo motors for dynamic driving systems such as Dynamic Damper Control featured as standard on the BMW 7-Series. Stable and reliable coverage of all energy requirements and all electrically driven vehicle functions in the BMW 7-Series ActiveHybrid Concept is therefore guaranteed at all times, regardless of driving conditions.

High storage capacity enhancing both efficiency and motoring comfort.

Among other things, this allows the use of the Auto Start Stop function in conjunction with BMW ActiveHybrid technology even more often than in BMW's current production models, without giving up or losing motoring comfort in any way whatsoever. When stopping at a road junction, at the traffic lights or in a traffic jam, the combustion engine is automatically switched off to avoid any inEfficient idling. Then, as soon as the driver lets go of the brake pedal and presses down the gas pedal to set off again, the engine is started automatically.

The various functions no longer connected to the alternator on the BMW 7-Series ActiveHybrid Concept may also be operated during such an interim stop, the energy required for this purpose being delivered consistently by the high-capacity lithium-ion battery.

Optimum comfort is ensured above all by ongoing operation of the ventilation and climate control systems keeping temperatures in the interior at a consistent level also when the car is at a standstill. Similarly, all other comfort functions may still be used permanently while the engine is switched off. Clear highlights in design bearing testimony to the car's efficiency and trendsetting technology.

The BMW 7-Series ActiveHybrid Concept is a hybrid car offering a dynamic potential truly unique the world over - and at the same time it is a luxury performance saloon with an excellent balance of performance and fuel consumption.

Precisely these unique qualities come out clearly also through the design of the Concept Car. The BMW 7-Series ActiveHybrid Concept is based in its concept and fundamental design on the new BMW 7-Series, a luxury saloon offering a fascinating synthesis of sporting elegance and natural presence. The dynamic proportions of the car are clearly expressed by its long wheelbase, the long and sleek engine compartment lid, the short overhang at the front, the passenger compartment moved far to the rear, and the low roofline.

The BMW 7-Series ActiveHybrid Concept adds specific design features both at the front and the rear to enhance this characteristic look to an even higher level. At the same time the close match of the production model and the concept car clearly symbolises BMW's claim to offer the potential of BMW ActiveHybrid technology within BMW's existing portfolio of models. And the paintwork in Blue Water Metallic already used on other high-efficiency concept cars clearly bears testimony to the outstanding efficiency of this very special saloon.

Optimised air guidance at the front.

The outstanding presence and flair of the new BMW 7-Series is expressed at the front end of the car particularly by the large BMW kidney grille standing out far to the front in an almost majestic, upright position. Generously designed dual round headlights, in turn, create that concentrated look so typical of BMW, while the large engine compartment lid exudes a feeling of clarity and tranquillity.

Contrary to the series model, the BMW 7-Series ActiveHybrid Concept comes with an aluminium band slightly inclined towards the rear and somewhat lower down, instead of the usual chrome band above the lower air intake scoop.

This aluminium trim extends across the entire width of the car, tapering out towards the outside. In this position and with its special design featuring a precise contour and angle, the aluminium band resembles an air flap typically used on a modern aircraft.

Featured on the front end of the BMW 7-Series ActiveHybrid Concept, the band serves in a similar manner to optimise aerodynamics and air guidance along the lower section of the car. The centre section of the aluminium band, in turn, covers the lower air intake scoop, while the two slender edges beneath the headlights subdivide the air intakes at the side with contours similar to the headlights themselves.

Foglamps are fitted at the outer edge of the two air intakes boasting a black honeycomb grid again in unique design. These foglamps are made up in each case of seven LED light units, six of which are arranged vertically in rows of two and one of which is below the aluminium band. The horizontal line of the aluminium band and the foglamps placed far to the outside serve in this way to additionally accentuate the sheer width of the car.

From the side the sporting and elegant lines of the saloon are accentuated by 20-inch aluminium rims on the BMW 7-Series ActiveHybrid Concept. The wheels in V-spoke design are finished in body colour and thus merge even more smoothly and harmoniously with the overall look of the car. The name "EfficientDynamics - ActiveHybrid" on the lower part of the doors, finally, highlights this outstanding saloon as a particularly fuel-Efficient, low-emission concept.

Exclusive design on the exhaust tailpipes.

The particular style created at the front of the car by the aluminium band is reflected by the rear-end design of the BMW 7-Series ActiveHybrid Concept where an aluminium air flow element extends across the entire width of the car beneath the rear apron, reaching its full height only in the middle.

The more slender edges to the right and left form the upper surround on the twin-chamber exhaust system with its tailpipes again coming in new, innovative design. The tailpipes are surrounded by a frame of matt chrome and, instead of their usual round or oval shape, come in unusually wide and flat contours. A horizontal, black crossbar, finally, gives the tailpipes an almost multi-level appearance as if they were split up into two sections.

The aluminium band at the rear again forms an additional horizontal line emphasising the wide track of the car. At the same time the sculptural surfaces so characteristic of the new BMW 7-Series also dominate the looks and appearance of the BMW 7-Series ActiveHybrid Concept, again creating that unique BMW style. The roofline, in turn, flows down via the flanks of the car all the way to the bumper, thus including the rear end in the overall dynamic look of the new BMW 7-Series for a particularly sporting touch.

Unique: BMW ActiveHybrid technology in the luxury class.

Introducing the BMW 7-Series ActiveHybrid Concept, the world's most successful manufacturer of premium cars is setting a clear standard: Hybrid technology has the potential to meet the extremely great demands made of a car in the luxury class. And at the same time it offers all the qualities required to further enhance the characteristics typical of a BMW.

This nevertheless calls for hybrid components precisely tailored to the respective model and boasting features exactly reflecting the profile of the BMW brand.

To meet this demand, BMW has applied its unique development competence in the area of drive systems unparalleled the world over for the systematic and clear-cut integration of hybrid components.

The result of this intense development process is BMW ActiveHybrid - a technology able to provide the most dynamic hybrid cars in the world and serving at the same time to offer the greater efficiency achieved by combining a combustion engine with electric drive under all motoring conditions, significantly reducing both fuel consumption and emissions in the process. The BMW 7-Series ActiveHybrid Concept is therefore more superior, more dynamic and more efficient than all other cars featuring this kind of technology so far.

Yet another important highlight of BMW ActiveHybrid technology is the ability to offer the full potential of this technology quite independently of the driver's action. This big advantage comes from the fact that BMW ActiveHybrid technology is fully integrated into the drive system, without any effects on the design of the car and its everyday use.

Hybrid technology therefore fits perfectly into the BMW EfficientDynamics development strategy, where all EfficientDynamics components and features come as standard on BMW's various models, tailored in each case to the specific model and its individual character. These components and technologies therefore help to reduce fuel and exhaust emissions over a wide range of loads also under practical, everyday driving conditions, to a great extent without requiring any action on the part of the driver. And BMW ActiveHybrid technology also remains in the background to begin with, at the same time naturally offering its full effect in terms of efficiency and dynamics.

Best of Hybrid: flexible development strategy providing ideal solutions on each model.

Given these qualities, the technology featured in the BMW 7-Series ActiveHybrid Concept is ideally suited for a luxury performance car of this calibre. Taking the same approach as with many other highly developed and advanced technologies, BMW seeks also in the implementation of hybrid components to introduce these technologies initially in higher segments of the market such as the luxury performance class. Clearly, this gives particular emphasis to the premium claim underlying each new development.

In developing hybrid components BMW seeks furthermore to find appropriate applications for each model and concept. BMW ActiveHybrid is based on a modular principle following the "Best of Hybrid" strategy in integrating the optimum components in different vehicle concepts as required.

On the BMW 7-Series ActiveHybrid Concept the eight-cylinder petrol engine and the electric motor acting as the mild hybrid power unit form the same ideal match as the eight-cylinder petrol engine and the full hybrid concept on the BMW X6 ActiveHybrid Concept launched in 2007. Indeed, this broad scope of possible hybrid applications reflects the underlying principle of BMW EfficientDynamics to develop appropriate solutions for all vehicle segments and performance classes in line with each concept and vehicle.

BMW is developing these hybrid components in a joint venture among equals with Daimler. The objective of this joint venture is to develop and test components for hybrid drive in upmarket vehicles, each manufacturer then integrating the hybrid components developed into their respective cars in accordance with the individual philosophy of each brand.

Ongoing progress ensured by BMW ActiveHybrid and BMW EfficientDynamics.

Pursuing the BMW EfficientDynamics development strategy, the BMW Group is making the most effective contribution worldwide to the reduction of fuel consumption and emissions in road traffic. The result of this unique strategy results from both the regular use of such trendsetting innovations as standard equipment on BMW models and from the introduction of such innovations throughout all model series, as well as the wide range of improvements ensured in this way.

BMW ActiveHybrid now takes a significant step into the future in this context of highly developed technologies for the environment, opening up the door to an even wider range of technologies for reducing fuel consumption and emissions in the years to come and using an appropriate combination of features in each case and for each model in the interest of enhanced driving dynamics and all-round economy. The objective is to develop concepts for all model series providing utmost driving pleasure on the most efficient use of energy.

Now BMW offers a unique range of efficiency-enhancing technologies also in the luxury saloon segment, with BMW's regular models in the new BMW 7-Series already featuring a wide range of improvements through BMW EfficientDynamics quite unparalleled the world over in their impact and diversity.

BMW ActiveHybrid technology adds a further option, hybrid technology for the first time achieving the supreme standard essential to BMW in a luxury performance car of this calibre. So introducing the BMW 7-Series ActiveHybrid Concept, BMW is proudly presenting another strategy in further enhancing the Company's position as the world leader in the development of particularly efficient and, at the same time, highly dynamic automobiles of a unique standard.

The New Mercedes-Benz S400 BlueHYBRID












Mercedes-Benz is launching its first passenger car model equipped with a hybrid drive system in summer 2009 - the Mercedes-Benz S400 BlueHYBRID. The combination of a modified V6 petrol engine and a compact hybrid module makes the Mercedes-Benz S400 BlueHYBRID the world's most economical luxury saloon with a spark-ignition engine. The NEDC combined fuel consumption is a mere 7.9 litres per 100 kilometres. This makes for the world's lowest CO2 emissions in this vehicle and performance class - just 190 grams per kilometre. These exemplary figures go hand in hand with assured performance. The 3.5-litre petrol engine develops an output of 205 kW/279 hp, the electric motor generates 15 kW/20 hp and a starting torque of 160 Nm. The result is a combined output of 220 kW/299 hp and a combined maximum torque of 385 newton metres. Moreover, the new Mercedes-Benz S400 BlueHYBRID is the first series-production model to be equipped with a particularly efficient lithium-ion battery specially developed for automotive use. This is another major contribution by Mercedes-Benz to the electrification of the car.

The new Mercedes-Benz S400 BlueHYBRID is based on the S350, and features an extensively modified drive train. This encompasses a further development of the 3.5-litre V6 petrol engine, an additional magneto-electric motor, the 7G-TRONIC seven-speed automatic transmission specially configured for the hybrid module, the necessary operating and control electronics, the transformer and a high-voltage lithium-ion battery.

Optimised thermal efficiency lowers the engine's fuel consumption

The 3.5-litre V6 petrol engine with variable valve control has been throughly re-engineered and improved. In the process the development engineers made use of the advantages offered by the Atkinson principle,where the expansion phase is longer than the compression phase. The intake valve is kept open slightly longer between the intake and compression phases, which improves the engine's thermal efficiency while reducing the specific fuel consumption and untreated emissions. A new cylinder head, different pistons and a modified camshaft with different camshaft control increase the output by 5 kW/7 hp to 205 kW/279 hp - while reducing fuel consumption at the same time.

Especially on rural journeys and on motorways, the Mercedes-Benz S400 BlueHYBRID achieves a further efficiency improvement by moving the so-called operating point of the petrol engine to produce a lower specific fuel consumption. The extremely high start-off torque made possible by the boost effect of the electric motor gives the driver a particularly exhilarating feeling of powerful acceleration, while fuel consumption and emissions are reduced.

The electric motor improves efficiency

The compact, disc-shaped electric motor, which is space-savingly installed in the torque converter housing between the engine and the 7G-TRONIC seven-speed automatic transmission, improves efficiency even further. This is a 3-phase AC external rotor magneto motor, which develops a peak output of 15 kW/20 hp and a starting torque of 160 newton metres with an operating voltage of 120 Volts.

This compact motor also acts as a starter and generator, adopting the functions of both these conventional ancillary units.

Sophisticated interaction with the internal combustion engine makes numerous additional functions possible that positively influence the emissions and agility of the Mercedes-Benz S400 BlueHYBRID in equal measure. Moreover, this disc-shaped motor effectively dampens torsional vibrations in the drive train, thereby further reducing noise and vibrations in the interior. The result is even more ride comfort for both driver and passengers.

"Boost" effect for even more driving pleasure

The overall system offers extensive benefits: firstly by helping to save fuel, and secondly by increasing driving pleasure with the help of the "boost" effect, where the electric motor gives powerful assistance to the petrol engine with its maximum torque of 160 newton metres right from the beginning of the fuel-intensive acceleration phase. This means that the hybrid drive system of the Mercedes-Benz S400 BlueHYBRID moves off powerfully even from very low engine speeds, as the torque curve impressively confirms. The additional torque of the hybrid module also has a consistently positive effect during subsequent acceleration phases. In all driving situations, the driver therefore benefits from the interaction between the two units in the form of powerful responsiveness and muscular torque - but without an increased fuel consumption.

The Mercedes-Benz S400 BlueHYBRID accelerates from zero to 100 km/h in 7.2 seconds, and reaches an electronically governed top speed of 250 km/h. The Mercedes-Benz S400 BlueHYBRID betters the already very favourable NEDC fuel consumption of the conventionally powered S350 by up to 2.2 litres per 100 kilometres. CO2 emissions are reduced by 21 percent.

Every braking action generates electric power for the battery

When the vehicle is braked, the electric motor acts as a generator and uses a process known as recuperation to convert the kinetic energy into electrical energy. This energy is stored in the compact yet highly efficient lithium-ion battery, and made available when required.

In the process the electric motor assists the engine braking effect of the internal combustion engine in two smooth, seamless stages: In stage one, on the overrun with no braking action, the electric motor acts as a generator and begins to recuperate energy. Stage two commences as soon as the driver lightly operates the brake pedal: the generator output is then increased proportionally, and perceived as heavier deceleration by the driver. Only when more brake pedal pressure is applied are the wheel brakes activated in addition to recuperation. In this way more electrical energy can be generated, while saving wear and tear on the hydraulic braking system at the same time. To make the best possible use of this double benefit, Mercedes engineers also developed a new braking system with a new brake pedal module for the Mercedes-Benz S400 BlueHYBRID.

Cleverly located control electronics

Dedicated control electronics are required to operate the 3-phase AC electric motor in the 120-Volt high-voltage DC network. The current converter is accommodated in the space formerly occupied by the starter. As the control electronics heat up as a result of electric currents measuring up to 150 amps, the system is equipped with its own, additional low-temperature cooling circuit.

Mercedes-Benz engineers have accommodated the transformer in the right front wheel arch, where it facilitates the exchange of energy between the 120-Volt high-voltage network and the 12-Volt onboard network - and also allows the option of emergency starting with jump leads if the standard battery should lose its charge. To ensure a consistently high level of electrical efficiency, the transformer is likewise cooled by a low-temperature circuit. The 12-Volt lead/acid battery is installed in the boot, and not only supplies the standard consumers but also the monitoring system for the high-voltage components with energy. Thanks to its interaction with the lithium-ion battery, it is considerably smaller in size and lighter than usual.

Tried-and-tested automatic transmission with a new configuration

Mercedes-Benz developers also adapted the well-proven 7G-TRONIC automatic transmission to suit the hybrid drive, with newly programmed software for the transmission management system. A newly developed auxiliary oil pump ensures reliable lubrication of the transmission even during phases when the internal combustion engine is switched off.

This complex system is managed by the modified high-performance engine control unit. This incorporates extensive functions, and distinguishes between operating conditions such as city traffic, rural journeys, motorway driving or slow manoeuvring.

Hybrid status is shown in the instrument cluster

The driver is also able to monitor the status of the hybrid drive system visually. The instrument cluster has a separate, centrally positioned, display showing the energy flow during boost and recuperation phases, as well as the battery charge status.

Seven-stage safety concept in addition to the Mercedes-Benz standard

As is usual at Mercedes-Benz, the development engineers gave safety aspects their very special attention. Know-how incorporated into the series-production car included long years of Daimler research experience with fuel-cell technology. The challenge lay in not only complying with all the worldwide and in-house legal crash test requirements, but also in ensuring the greatest possible safety for the electrical components. This safety system already applies in production, includes workshop personnel during servicing and maintenance, and also takes the emergency services into account when passengers need to be recovered following an accident.

Accordingly the hybrid technology of the Mercedes-Benz S400 BlueHYBRID is equipped with an extensive 7-stage safety concept.

  1. In the first stage all the wiring is colour-coded to eliminate confusion, and marked with safety instructions. This prevents assembly errors in production, and makes the regular quality checks easier to carry out.
  2. The second stage comprises comprehensive contact protection for the entire system by means of generous insulation and newly developed, dedicated connectors.
  3. As part of the third stage, the world's first lithium-ion battery to be used in a series-production model has been given a whole package of carefully coordinated safety measures. This innovative battery is accommodated in a high-strength steel housing, and also secured in place. Bedding the battery cells in a special gel effectively dampens any jolts and knocks. There is also a blow-off vent with a rupture disc and a separate cooling circuit. An internal electronic controller continuously monitors the safety requirements and immediately signals any malfunctions.
  4. The fourth stage of the safety concept includes separation of the battery terminals, individual safety-wiring for all high-voltage components and continuous monitoring by multiple interlock switches. This means that all high-voltage components are connected by an electric loop. In the event of a malfunction the high-voltage system is automatically switched off.
  5. Active discharging of the high-voltage system as soon as the ignition is switched to "Off", or in the event of a malfunction, is part of the fifth stage.
  6. During an accident, the high-voltage system is completely switched off within fractions of a second (stage six).
  7. As the seventh and last stage, the system is continuously monitored for short circuits.

Thanks to its compact dimensions and modular design, the additional weight of the overall system is only 75 kilograms - including the comprehensive safety systems. The superior driving experience for which a Mercedes is known is therefore ensured by this trailblazing and very versatile technology, which can be used for practically all Mercedes-Benz model series. Moreover, the payload remains unchanged at 595 kilograms.

The intelligent high-performance engine management system responds very sensitively to different driving conditions, and optimally configures the drive system for the relevant application, ensuring that both fuel consumption and emissions are kept to the lowest possible level.

At standstill the petrol engine is usually switched off, and therefore consumes no fuel. The electric drive of the refrigerant compressor and steering servo pump allows uninterrupted operation of the air conditioning and power steering. Comfort is in no way compromised, and is at the same high level as in all S-Class models.

Moving off and acceleratingaway gently remains a smooth and comfortable procedure. A driver who kicks down the accelerator for a brisk start benefits from the boost function of the electric motor, which produces considerably more dynamic acceleration.

At constant speedsthe intelligent electronics recognise situations such as relaxed motorway stretches, and automatically adjust the load point of the internal combustion engine to achieve a lower specific fuel consumption, thereby helping to save fuel and reduce emissions.

When rolling to a stopthe recuperation function is activated as soon as the drive is interrupted in any way (foot off the accelerator, engine braking). Once the vehicle speed falls below 15 km/h, the petrol engine is automatically switched off.

If the driver brakes using the brake pedal, the electric motor initially begins to convert the vehicle's kinetic energy into electrical energy. In this case the electric motor acts as a generator, storing the kinetic energy as electrical energy in the lithium-ion battery. This process feels like a stronger engine braking effect to the driver. The conventional disc brakes at the wheels are not yet employed, saving wear and tear. The disc brakes are only activated if the driver applies heavy pressure to the brake pedal, braking the car together with the engine brake and recuperation.

Once the driver selects "R" (reverse) in the 7G-TRONIC automatic transmission when manoeuvring, this automatically activates the Manoeuvring mode and prevents the start/stop function from switching off the engine at short, frequent intervals.

The advantages of the hybrid drive system really come into their own in city traffic, with frequent stops at red traffic lights. Already switching off the petrol engine as the car frequently coasts to a stop significantly lowers the fuel consumption and emissions, while the long recuperation phases increase the battery charge. The electric motor ensures particularly comfortable and rapid restarting when the start/stop function is active.

On rural roadsthere are frequent changes between boost, constant speed and recuperation phases. Depending on the nature of the route, large quantities of recuperation energy are available to reduce fuel consumption and emissions. The more braking and acceleration phases there are, the better: uphill and downhill gradients, as well as winding, dynamic stretches, make for the largest savings.

The hybrid effect is inherently less important on motorways, however thanks to specific modifications to the V6 petrol engine and the 7G-TRONIC automatic transmission, the driver is also able to achieve significant fuel savings and correspondingly lower emissions on fast road stretches like these.

The Mercedes-Benz S400 BlueHYBRID is produced at the Sindelfingenplant, together with the other S-Class models. The petrol engine, 7G-TRONIC automatic transmission and electric motor are first put together to form a hybrid module, then delivered to the production line as a unit. The market launch in western Europe is planned for June 2009; China is expected to follow in August 2009 and the USA in September 2009.

Friday, April 4, 2008

Saab 9-X BioHybrid concept













Saab 9-X BioHybrid:
Boosting Efficiency in Compact Design and Performance

The Saab 9-X BioHybrid concept is a vivid vision of what a future compact car from Saab could look like. It is designed to reflect the priorities of youthful customers who seek progressive looks, responsible performance and high-tech communications, all in a sporty, fun-to-drive package.

Exploring design themes from Saab's award-winning Aero X and earlier 9X concepts, the 9-X BioHybrid also demonstrates the potential for ultra-efficient power from a 200 hp (147 kW), 1.4-liter BioPower turbo engine backed by GM's next-generation Hybrid system. Projected combined cycle CO2 emissions of just 105 g/km on E85 fuel are testimony to the promise of this package (see separate release for details).

The interior showcases an entirely new expression of Saab's driver-focused cockpit design, together with innovative, seamless connectivity for personal nomadic devices and a rear cargo deck with a 'low friction' loading system.

"This car is all about efficiency in design and performance," says Anthony Lo, Director of Advanced Design at General Motors Europe, who led the 9-X BioHybrid design team in co-operation with the Saab Brand Center in Sweden.

With its 'turbine' wheels placed at all four corners, minimal bodywork overhangs and an extended roof line, the proportions of the three-door Saab 9-X BioHybrid bring a dynamic, new dimension to conventional compact 'hatchback' looks.

The smooth 'fuselage' bodywork, now without any visible handles or door mirrors, the bold 'wraparound' window graphic and deep front grille are all themes inspired by the Aero X coupé concept shown at Geneva two years ago.

The car's distinctive 'shooting brake' silhouette and rear functionality are developed from the 9X multi-role concept shown at Frankfurt in 2001. "You could say we designed this car from back to front, "says Lo. "The shape of the 9X is right for a car of this size, and the longer roof line helps the aerodynamics as well as providing more rear headroom and interior space."

Echoing Saab's roots in aircraft design, the 9-X BioHybrid also explores the potential for using active aerodynamics to reduce drag – and fuel consumption – at cruising speeds. Above 70 kph (43 mph), the upper and lower bodywork is reshaped as the roof spoiler automatically extends to further lengthen the roof line and an underbody diffuser is deployed from the bottom of the rear bumper.

The four-seater cabin introduces an entirely new execution of Saab's driver-focused cockpit design. The central, floor-mounted console, with its angled controls and displays, is now eliminated. Instead, the driver- focused layout incorporates a main instrument panel that sweeps out from the top of the door moulding, arching across the driver. The embedded 3-D graphics appear to be 'frozen' in ice, continuing a Scandinavian design theme first seen in the Aero X.

Reflecting the needs of youthful customers, who expect easy access to multi-media both inside and outside the car, Saab has co-operated with Sony Ericsson in providing seamless in-car connectivity for a range of nomadic devices. The result is a wireless interface for streaming data, entertainment and satellite navigation functions for display and use. The interface also allows the simultaneous use of multiple devices when passengers are in the car.

At the rear, the cargo deck features an electrically-powered slide-out floor, which is activated when the bottom half of the split tailgate drops down The floor, and the back of the folding rear seats, is covered by 'high friction' rubber carpeting, which 'grips' items and holds them securely in place. For easy loading and unloading, aluminum bars automatically rise up and down as the tailgate is opened and closed.

The treatment of light is an important part of Scandinavian design and this is evident in the use of variable, white ambient lighting inside the cabin. The level of suffused illumination can be changed in intensity from bright, cold to warm and soft. It's a personalized feature that could even be programmed, for example, to reflect the pattern of the changing seasons

"This car shows how our concept work can be carried forward into a compact format," adds Anthony Lo. "It has a number of features which we will be developing further, such as the new driver-focused design theme, the importance of clean, uncluttered surfaces and the easy, seamless connectivity inside the car."


Technical Specifications

BioPower Engine:
Transversely-mounted, front wheel drive
1398 cc. Four cylinders Bore/stroke: 73.4/ 82.6 mm. Aluminum cylinder head, cast iron block
DOHC, chain-driven. Four valves per cylinder.
Forged steel crankshaft, steel connecting rods. Aluminum pistons, oil spray cooled.
Direct Injection with centrally-mounted injectors. VVT, inlet and exhaust
Sodium-filled exhaust valves
Compression Ratio: 10.2: 1
Intercooled turbocharger. Max. Boost Pressure: 1.6 bar
Dual-mass flywheel. Saab engine management

Max power (E85): 200 hp (147 kW) @ 5000 rpm.
Max.torque (E85): 280 Nm (207 lb.ft) @ 1750-5000 rpm
Max power (gasoline): 170 hp (125 kW) @ 5200 rpm.
Max.torque (gasoline): 230 Nm (170 lb.ft) @ 1500-5200 rpm

Hybrid System
Electric motor/generator with lithium ion battery pack.
Electric power boost, regenerative braking, fuel cut-off, automatic engine re-start

Transmission:
6-spd manual gearbox, automated clutch, sequential gear selection, steering wheel controls

Suspension:
Front: Damper/coil struts, aluminum lower A-arm. Anti-roll bar.
Rear: Torsion beam, two trailing links, coil springs and dampers. Anti-roll bar
Steering:
Rack and pinion, Electrical power assistance.

Wheels, Tires:
21inch, 245/35R21
Brakes:
Hydraulic, dual circuit, vacuum booster. Discs: 345 mm / 345 mm (all ventilated)

Performance Data
(projected figures)

0 - 100 km/h (0-62 mph): 7.9 secs (E85)
8.3 secs (gasoline)

80 -120 km/h (50-75 mph), 5th gear: 8.8 secs (E85)
11.2 secs (gasoline)

Top Speed, 6th gear: 216 km/h /134 mph (E85)
192 km/h / 119 mph (gasoline)

Fuel consumption (combined cycle): 6.4 l/100km (E85)
4.9 l/100km (gasoline)

CO2 emissions 105 g/km (E85)
117 g/km (gasoline)

Saturday, February 16, 2008

Chevrolet Fuel Cell Equinox and GMC Yukon Hybrid











GM Premieres First Ever Fuel Cell, Hybrid SUV Fleet at the Oscars


Chevrolet Fuel Cell Equinox and GMC Yukon Hybrid Vehicles to Transport Hollywood's Hottest Talent in "Fuel-Friendly" Style


LOS ANGELES – The red-carpet arrivals at the 80th Annual Academy Awards® on Feb. 24, will be transformed with advanced technology vehicles from GMC and Chevrolet. This fuel-friendly fleet – larger than any other assembled for a major awards show before – will enable Hollywood’s hottest talent to enjoy stylish and environmentally friendly rides in one of more than 75 vehicles, including the GMC Yukon Hybrid, the zero-gas and zero-emissions Chevy Equinox Fuel Cell and the FlexFuel E85 ethanol-compatible GMC Yukon.

As the only ABC Network automotive sponsor of the 2008 Oscar® telecast, GMC and Chevrolet will bring hybrid and fuel cell technology to the forefront at the red carpet, and other Oscar Week events. The fleet continues GM’s major strategic effort to provide “fuel-friendly” vehicles to the entertainment industry and spread the word about GM’s environmentally-conscious cars, trucks and SUVs.

“GM’s longstanding relationship with Hollywood and our strong commitment to bringing advanced technologies to market that will help diversify fuel sources and reduce vehicle emissions makes this the perfect time for GM to drive ‘green’ to the Oscars,” said Dino Bernacchi, GM Director of Marketing Alliances and Branded Entertainment. “Our outreach to showcase GM’s ‘fuel-friendly’ products will be increasingly evident in the entertainment industry in 2008 with presence at awards shows, film festivals and special events, as well as a heightened product placement effort in movies and television.”

GM’s ramped-up efforts to drive Hollywood “green” began with “fuel-friendly” vehicles at the 50th Annual GRAMMY Awards and 39th NAACP Image Awards. Chevrolet is also reaching out to the next generation of tomorrow’s influencers with the first-ever “Chevy Rocks The Future” event on Feb. 19. GM already provides the largest “fuel-friendly” product placement fleet to Hollywood producers and directors with nearly 20 different vehicle types.

Later this quarter, Chevrolet will hand over the keys to Chevy Equinox Fuel Cell vehicles to major entertainment celebrities for everyday use as part of its Project Driveway program – an effort by Chevrolet to move fuel cell technology from the laboratory into consumers’ driveways.

The GMC Yukon Hybrid is the industry’s first full-size SUV hybrid. No other hybrid can offer the fuel efficiency and full-size SUV performance including seating for up to 8 passengers and 6,200 lbs. maximum towing.

The 2008 Yukon Hybrid boasts vastly improved fuel economy over its gasoline-only sibling. Two-wheel drive models, for example, deliver 21 mpg in the city, a 50-percent improvement over its 5.3L non-hybrid sibling and comparable to the much-smaller 2.4L-equipped Toyota Camry sedan, according to figures obtained from www.fueleconomy.gov.

This year’s Oscars will be the first major awards show where a fleet of fuel cell vehicles will provide transportation for celebrities. The Chevy Equinox Fuel Cell electric vehicle is a zero-gas, zero-emissions vehicle that makes no compromises, achieving 0 to 60 mph in 12 seconds, 236-lb.-ft. of instant torque and top speed of about 100 miles per hour. It seats four, sports 32 cubic feet of cargo volume for everybody’s gear, and has a range of approximately 150 miles per fill-up based on the new 2008 EPA adjusted measurement. The Equinox Fuel Cell also features full four-wheel ABS for controlled, confident stopping.

Aside from its dramatically different propulsion system, the Equinox Fuel Cell looks and drives much like a production Chevy Equinox (a small SUV).

In addition to the GMC Yukon Hybrid and Chevy Fuel Cell Equinox, a select number of FlexFuel E85 ethanol-compatible Yukon SUVs will drive to the red carpet. Biofuels such as E85 ethanol have tremendous potential to help offset the world’s growing energy demands, and General Motors offers more FlexFuel E85 ethanol-capable models than any other brand, with 2.5 million FlexFuel E85 ethanol vehicles currently on the road. FlexFuel E85 ethanol vehicles can run on either gasoline or E85 ethanol – a blend of 85 percent ethanol and 15 percent gasoline – or a combination of both.

The Academy of Motion Picture Arts and Sciences (AMPAS) will present the 80th Annual Academy Awards for outstanding film achievements of 2007, on Sunday, Feb. 24, at the Kodak Theatre at Hollywood & Highland Center®, televised live at 5 p.m. PST/8 p.m. EST by the ABC Television Network.

Sunday, February 3, 2008

GMC Denali XT Concept

GMC DENALI XT HYBRID CONCEPT TRUCK DELIVERS 50-PERCENT FUEL ECONOMY IMPROVEMENT

• New, robust design form serves as a test well for GMC's future design direction
• First combination of GM's two-mode hybrid system with E85 ethanol-capable engine
• Height-adjustable suspension and cargo space-enhancing Midgate


CHICAGO – GMC unveiled the Denali XT concept at the 2008 Chicago Auto Show. It offers a 50-percent increase in combined fuel economy over comparable small pickup trucks when running on gasoline, and it incorporates a new, muscular form in a performance-styled, hybrid sport-utility truck (SUT).

The Denali XT has a unibody architecture and rear-wheel drive, enabling its distinctive design and efficient performance. It builds on the equity of the Denali line and its reputation for advanced engineering and refinement, including the first combination of GM's two-mode hybrid system with an E85 ethanol-capable engine. Denali XT's new, more efficient 4.9L version of GM's small-block V-8 features fuel-saving technologies such as direct-injection technology and Active Fuel Management.

The engine is matched with GM's unique two-mode hybrid propulsion system, giving the powerful SUT exceptional fuel economy and uncompromising capability – including all-electric drive at low speeds. It is a powertrain combination that makes the Denali XT perfectly suited to a variety of active lifestyle activities, such as hauling skis and snowboards to the mountain or towing a sport jet boat to the lake.

"Like all GMCs, the Denali XT is functional and capable, but it blends those traits with a more efficient, sporty driving experience," said Jim Bunnell, GMC general manager. "It is a vehicle that exemplifies GMC's engineering excellence, as well as GM's commitment to hybrid and advanced technologies."

With its unibody structure, the Denali XT is lighter than conventional body-on-frame trucks, with great ride-and-handling characteristics. This design enhances fuel economy while giving the vehicle a sporty driving experience. True to its GMC Professional Grade heritage, the Denali XT is filled with technologies and features that maximize its flexibility, including a cargo space-enhancing Midgate® and height-adjustable suspension.

The Denali XT's proportions are framed around a high cowl and 123.4-inch (3,134 mm) wheelbase. This enhances the vehicle's truck functionality, but packages it in an efficient, unibody architecture.

Design and construction were spearheaded by Holden Design, within the Australian arm of GM's global design and engineering network.

"Denali XT is about working hard, playing hard and enjoying an active lifestyle," said Bunnell. "It is the same philosophy that has helped make the GMC Acadia crossover a huge hit with consumers."

Dramatic design statement
A muscular form and wide, firmly planted stance give the Denali XT a confidently capable road presence. Minimal overhangs, large wheels, sleek headlamps and a low roof profile deliver an aggressive, performance-oriented appearance.

"It is a robust yet tailored design statement that is unlike anything else on the road," said Ed Welburn, vice president, Global Design. "It has the youthful look of a custom automobile that incorporates the capability customers expect from a truck."

The Denali XT's design includes a new take on GMC's iconic grille, with a prominent, four-bar element in addition to the large, red GMC logo and signature Denali background. Flared fenders accentuate the wide road stance. The stance is also enhanced when the Denali XT is lowered on its air-adjustable suspension, which creates a sleeker appearance that simultaneously improves aerodynamics. Large, bold 23-inch wheels and custom Kuhmo tires complement the Denali XT's stance.

Inside, the Denali XT blends mechanical functionality with leather-trimmed comfort.
Billet-metal surrounds, controls and instruments convey the cold precision of an aircraft cockpit. This is balanced by the warmth of bespoke saddle-leather trimmed seats and other contact surfaces.

"The form language is smooth and structured to characterize GMC's power. The details have a deliberately contrasting mechanical aesthetic to mark GMC's engineering sophistication," said Warrack Leach, lead designer.

The interior features innovative instrumentation with "floating" red-illuminated numerals backed by surface chaplets in the clusters and a large integrated vehicle interface screen. The interior illumination was supplied by Osram.

The Denali XT seats four. The high-cowl vehicle architecture enables higher seating positions, allowing the couple distance between front and rear occupants to be reduced without compromising knee room. This packaging efficiency creates generous interior and cargo bed dimensions within a more compact package.

Truck capability
With stiffness that is greater than most conventional, body-on-frame trucks, the Denali XT's unibody structure supports a very capable truck platform. It also serves as the mounting point for a four-wheel independent suspension that gives the vehicle its performance feel on the road. The multilink front suspension features a forward-mounted steering rack and dual lower links with ball joints at the outer ends, providing sharp responses to driver input. At the rear, a four-link suspension design uses coil-over shocks and a decoupled stabilizer bar to enhance cornering control, reduce body roll and optimize longitudinal compliance. In short, it's a truck that hauls more than cargo on twisting roads.

The rear cargo area is wide, deep and flat, with no suspension or wheelhouse protrusions; the cargo floor measures 55 inches long (1,397 mm) by 47.5 inches wide (1,206 mm). It all adds up to the space to haul a wide variety of lifestyle accessories.

The easy-to-operate Midgate can be lowered to extend the cargo-carrying capacity inside the vehicle. The rear seats fold flat to provide a longer floor for carrying items such as skis, surfboards or wood from the home improvement store. A fixed rear window allowed engineers to retain the vehicle's structure, reducing mass and complexity.

The Denali XT has an estimated payload capacity of 1,100 pounds (499 kg) and a towing capacity of an estimated 3,500 pounds (1,587 kg). This capability is delivered through unique vehicle and powertrain integration, where the multiple modes of GM's two-mode hybrid system provide towing capability.

New 4.9L SIDI V-8 and two-mode hybrid system
For the first time, GM's rear-wheel-drive two-mode hybrid transmission is paired with a smaller-displacement version of the small-block engine. The new V-8 4.9L E85-capable engine powers the Denali XT with an estimated 326 horsepower (243 kW). It uses direct-injection technology to produce the power of a larger engine, but consumes less fuel and produces lower emissions.

Also, the functionality of GM's Active Fuel Management system has been expanded through the use of hybrid technologies, enhancing the cylinder-deactivating feature to further improve fuel efficiency.

The Denali XT's two-mode hybrid system is partnered with the 4.9L engine and uses an electrically variable transmission to enhance fuel efficiency in city and highway driving. In city driving, all-electric propulsion is used at low speeds; on the highway, fixed-gear operation enables efficient performance even when towing a trailer.

The specific characteristics of the Denali XT allowed the synergistic evolution of GM's small-block V-8 and two-mode hybrid beyond the recently introduced in GM two-mode hybrid products, such as the GMC Yukon Hybrid and Sierra Hybrid. During this optimization process, additional powertrain technologies have been integrated, including Active Thermal Management, which transfers thermal energy from one driveline component to another to improve efficiency; and a high-efficiency axle configuration, which fundamentally reduces the losses normally associated with conventional axle configurations.

The integration of the advanced internal combustion engine technologies and two-mode hybrid system on the Denali XT reinforces GMC's Professional Grade position as a brand that continues to exceed customer expectations.

GMC DENALI XT CONCEPT SPECIFICATIONS

Body style / driveline: four-door, four-seat; rear-wheel drive sport-utility truck
Construction: body-frame integral
Engine type: 4.9L SIDI V-8 with Active Fuel Management
Horsepower (hp / kW): 326 / 243 (est)
Fuel type: unleaded regular or E85 ethanol
Transmission: two-mode hybrid
Suspension: front: independent SLA; rear: independent SLA
Brakes four-wheel disc
Wheel size & type: 23-inch aluminum; split 5-spoke
Tires: front: Kuhmo 255/35/R23
rear: Kuhmo 285/35/R23
Wheelbase (in / mm): 125.4 / 3134
Overall length: 205 / 5207
Overall width (in / mm): 76.3 / 1938
Overall height (in / mm): 62.5 / 1587
Track (in / mm): 65 / 1651
Cargo floor length (in / mm): 55 / 1397
Cargo floor width (in / mm): 47.5 / 1206
Payload (lb / kg): 1100 / 499 (est)
Towing capacity (lb / kg): 3500 / 1587 (est)