BMW 5-Series ActiveHybrid Concept, 2010

 

 

 

 

BMW 5-Series ActiveHybrid Concept, 2010

The BMW 5-Series ActiveHybrid Concept offers a particularly good rendition of the new BMW 5-Series Sedan in all its dynamic, efficient and innovative qualities, at the same time representing the ongoing development of the BMW X6 ActiveHybrid and the BMW 7 ActiveHybrid with their drivetrain technology already in production.

The drive system featured in the BMW 5-Series ActiveHybrid Concept consists of a straight-six gasoline engine with TwinPower Turbo technology, eight-speed automatic transmission, and electric drive. Integration of BMW ActiveHybrid technology in a sedan already extremely efficient with its "conventional" combustion engine reduces both fuel consumption and emissions once again by more than 10 per cent. At the same time the electric motor offers a boost function, supporting the gasoline engine in generating particularly dynamic drive power for an even more sporting driving experience in the car.

The drivetrain technology featured in the BMW 5-Series ActiveHybrid Concept allows all-electric, zero-emission motoring in city traffic. At the same time a special hybrid-based Auto Start Stop function offers additional efficiency by consistently switching off the combustion engine when stopping at the traffic lights, a road junction, or in congested traffic. Optimised comfort, finally, is provided by the auxiliary climate control function already featured in the BMW 7 ActiveHybrid.

Special development of ActiveHybrid technology as part of BMW EfficientDynamics.
The concept car based on the new BMW 5-Series Sedan for the first time presents the next generation of BMW ActiveHybrid technology, a special solution exclusive to BMW for intelligent interaction of the combustion engine and electric drive focused specifically on the requirements made of a dynamic sedan in the upper midrange segment.

Taking this approach, BMW is consistently continuing the development of hybrid technology according to a modular principle (best of hybrid), thus offering the optimum rendition of BMW ActiveHybrid technology for each concept and vehicle segment.

In accordance with the BMW EfficientDynamics development strategy, this ensures highly effective and practical use of hybrid technology for the reduction of both fuel consumption and emissions.
Also in the BMW Series Sedan segment: the BMW among hybrids combines supreme dynamics with maximum efficiency.

The combustion engine is supported in the BMW 5-Series ActiveHybrid Concept by an electrical drive system developed specifically for this model and arranged in compact dimensions between the straight-six combustion engine and the automatic transmission. Drawing its energy from a high-voltage battery at the back of the car, the electric motor develops maximum output of 40 kW.

An automatic clutch connects the gasoline engine and the electric motors.
Due to the particularly high level of torque generated from the start through the electric motors, the interaction of the two drive systems ensures extremely spontaneous and dynamic acceleration whenever required.

Perfectly integrated, precisely controlled: high-voltage battery supplying power to both the electric motor and the on-board network.
In overrun and when applying the brakes, the electric drive systems acts as a generator developing electric power fed into the high-voltage battery. This converts kinetic energy otherwise wasted as heat in the brake system into electric power saved for subsequent use.

Such energy obtained without any further consumption of fuel may then be used to generate drive power or operate electrical functions in the car.

This principle is the same as that of Brake Energy Regeneration already applied in BMW's current production models, with the level of electrical energy generated by the electric motor being significantly greater and the increase in efficiency correspondingly higher.

The high-voltage battery likewise developed for this specific concept is fitted within a high-strength special case near the rear axle of the BMW 5-Series ActiveHybrid Concept. This leads to an optimum position in terms of both safety and harmonious weight distribution. An integrated control unit permanently analyses the charge status of the high-voltage battery and controls both the battery charge process by way of Brake Energy Regeneration and the system cooling process. Apart from the electric motor, the high-voltage battery also delivers electric power to the car's on-board network. Among other things, this allows efficient operation of the car's auxiliary climate control activated whenever required by a remote control function to cool down the car's interior significantly even before starting the engine.

Convenient use of the all-electric driving mode and the Auto Start Stop function is likewise guaranteed in this way, with all electrical functions such as the audio system, climate control or navigation remaining fully available even with the combustion engine switched off.

Unique: intelligent energy management with advance analysis of driving conditions.
BMW ActiveHybrid technology provides its unique potential in terms of both efficiency and driving dynamics under all kinds of conditions and throughout a wide load range.

Unlike conventional hybrid cars whose extra efficiency is largely limited to city traffic, both the BMW X6 ActiveHybrid and the BMW 7 ActiveHybrid, by combining the combustion engine and the electric motor, are able to offer significantly lower fuel consumption and emission ratings also at higher speeds. This is made possible by technically sophisticated power electronics masterminding the interaction of the combustion engine and electric motor and thus optimising the overall efficiency of the drive system as a whole.

The BMW 5-Series ActiveHybrid Concept once again raises the range of functions provided by such power electronics to an even higher standard. As an example, the energy contained in the fuel and provided by the high-voltage battery may now be used even more specifically and efficiently to provide that Sheer Driving Pleasure so typical of BMW.

Taking additional factors into account, the interaction of the two drive units in the BMW 5-Series ActiveHybrid Concept is tailored to the driver's requirements and current driving conditions with maximum precision. At the same time the power electronics also control the operation of the car's ancillary units and comfort functions, again in the interest of maximum efficiency.

The range and diversity of parameters taken into account by the system is indeed quite unique in the automobile, just as the number of functions controlled in this way. A high level of all-round networking allows the power electronics to provide intelligent energy management, thus optimising the operating strategy of the entire vehicle under all conditions.

A further unique feature of energy management in the BMW 5-Series ActiveHybrid Concept is the car's ability to adjust its operating strategy not just to current, but also to upcoming driving conditions. To do this the power electronics from the start evaluate data indicating a possible change in exterior conditions or the driver's wishes and prepare the components in the drivetrain as well as the car's electronic system for a possible change in requirements.

To analyse driving conditions up front, the system uses data provided by engine and chassis management as well as the sensors in the driver assistance systems on board the car. Data saved in the navigation system on the route chosen by the driver likewise goes into the final calculation, enabling the system to forecast driving conditions on the route directly ahead. Then, proceeding from this analysis, the car is coordinated in advance and the optimum use of all systems serves to use the energy available with maximum efficiency.

Should the system determine, for example, that the autobahn ahead is about to lead downhill, the charge level of the high-voltage battery is intelligently controlled in advance to regain brake energy upfront with maximum efficiency.

Similarly, the high-voltage battery may be fully charged in good time before the driver reaches his destination, enabling the system to switch off the combustion engine at an early point and change to all-electric drive along the final stretch of road. Indeed, this forward-looking function is able to extend the cruising range on electric power by up to 30%.

The BMW 5-Series ActiveHybrid Concept: the future of driving pleasure and efficiency in the upper midrange segment.

Optimised to an even higher standard in the BMW 5-Series ActiveHybrid Concept, the drivetrain and control systems underline the great significance of hybrid technology as a cornerstone of BMW EfficientDynamics. Looking at a new generation of hybrid technology from BMW featured in the BMW 5-Series ActiveHybrid Concept therefore offers particularly attractive perspectives, the ongoing development of BMW ActiveHybrid technology serving to provide substantial progress in all areas leading to a harmonious all-round concept with distinctive features typical of the brand.

The BMW 5-Series ActiveHybrid Concept is therefore more dynamic, efficient and more intelligent than conventional representatives of this drive technology, standing out clearly as the BMW among hybrid cars in this segment.

Cadillac Aera Concept, 2010

 

 

 

Cadillac Aera Concept, 2010

The Cadillac Aera Concept won the 2010 Los Angeles Auto Show Design Challenge, tying with Smart and besting entries from seven other automakers including Mercedes-Benz, Honda, Nissan, Toyota and Maybach. GM Advanced Design has now won the honor more times than any other design team; this is its third victory since 2005.

This is the seventh year for the contest, and this year designers were asked to envision the "1,000 lb. car" and tasked to imagine an efficient four-passenger vehicle that maintained comfort, safety, driving performance and style while not exceeding the weight requirement.

The Cadillac Aera Concept is powered by compressed air via a highly efficient Pneumatic Drive System that has a 10,000-psi composite air storage tank with capacity for a 1,000-mile range. Flexible, pressurized air cells in the exterior skin, similar to material developed for the NASA Mars Rover airbags, enhance passive safety and interior comfort. The flexible polymer skin optimizes aerodynamics and functions as an ultra-lightweight alternative to conventional body panels and glass.

Cadillac Aera's body utilizes a 3D lattice, mono-formed frame that was designed to be similar to configurations found consistently in nature. The structure is formed from unique, alloy-utilizing, semi-solid freeform manufacturing, creating a naturally strong, extremely lightweight frame. All major body parts, including interior components, are essentially "grown" into a single part lattice structure.

The interior is crafted with an ultra-light recyclable polymer that allows for HVAC channels, fully adjustable seating, storage and comfort features all in one mono-form structure. Generous storage space accommodates luggage for two people.

Additional technologies include an all-in-one wheel system that combines rotary actuator propulsion, steering and suspension functions. A drive-by-wire system decreases the mass of electrical components, while vehicle-to-vehicle communication promotes active safety.

The concept was conceived in GM's North Hollywood Advanced Design Studio by Frank Saucedo, director; Phil Tanioka, vehicle designer; Brent Wickham, concept strategist; Shawn Moghadam, layout designer and Timonen, the project manager. Earlier this week, GM commemorated 10 years of advanced design at the L.A. area studio.


The Design Challenge is part of the Design Los Angeles automobile designers' conference and has evolved into an integral element of the Los Angeles Auto Show. Design Los Angeles connects those working in the design industry with well-known automotive design industry leaders. Los Angeles is home to the world's largest concentration of manufacturer design studios, representing automakers from North America, Europe and Asia. It is also the home of Art Center College of Design, one of the world's foremost transportation design institutions where many of today's leading automotive designers began their careers.

Cadillac CTS Sport Wagon, 2010

 

 

Cadillac CTS Sport Wagon, 2010

Cadillac treats car enthusiasts to a world premiere of its latest production-car design. The 2010 Cadillac CTS Sport Wagon makes its debut on the Monterey Peninsula, showcasing a dramatic design that elevates and updates the classic wagon body style.

Not unlike many historic Cadillac designs, the new Cadillac CTS Sport Wagon is an unmistakable and dynamic presence. The car's intricately cut rear profile injects fashion-forward design into the formerly utilitarian world of wagons. Cadillac's upcoming wagon offers ample interior space and includes a range of six-cylinder engine choices, making it a compelling alternative to larger utility vehicles.

Based on the hot-selling Cadillac CTS sport sedan, and a sister vehicle to the Cadillac CTS Coupe Concept, the Sport Wagon extends the design-driven renaissance of Cadillac. Following this special premiere at Pebble Beach, the Cadillac CTS Sport Wagon moves to the worldwide auto show circuit this fall - and into Cadillac dealerships in spring 2009.

A striking profile is created with the Cadillac CTS wagon, with a silhouette that suggests speed and aerodynamic efficiency. It rides on the same 113.4-inch (2,880-mm) wheelbase as the Cadillac CTS sport sedan and is 0.3-inch (7 mm) shorter. However, it offers a generous cargo area of 25 cubic feet (720 liters) behind the rear seats.

Design highlights:

    * Signature V-shaped deck and tailgate motif
    * Large, vertical taillamps with light-pipe technology
    * Power-opening liftgate (via key fob or in-vehicle button)
    * CHMSL integrated in subtle roof spoiler
    * Integrated roof load management system with cross bars for a seamless appearance
    * Cargo management system with adjustable in-floor containment
    * New 19-inch wheels
    * Larger available panoramic rear sunroof

The Cadillac CTS Sport Wagon, like its sedan predecessor, includes available features such as all-wheel drive, a 40-gigabyte internal hard drive, pop-up navigation screen and a hand-cut-and-sewn interior with Sapele wood accents.

Design details
Dramatic planes highlight the Cadillac CTS wagon's design, including a V-shaped motif carried throughout the vehicle and carefully integrated intersections of exterior surfaces. The elements coalesce in a dramatic fashion, creating tension that emphasizes the vehicle's performance.

The emotion of the Cadillac CTS Sport Wagon's design is carried by a number of nuanced details. The liftgate area, for example, is a confluence of angles and planes that typifies the vehicle's design tension. Cadillac's "V" motif is most prominent here, culminating in a spine at the center of the liftgate that is accented with a subtle spoiler at the top of the backlight. The rear quarter panels extend slightly beyond the inward-angled planes of the V, creating a distinctive W shape at the rear of the vehicle. Large, prominent vertical taillamps - with Cadillac's signature light pipe technology - are the final, dramatic touches to the rear-end styling.

"The more you study the rear of the CTS Sport Wagon, the more you see," said Dean. "Functionality was certainly a guiding factor during development, but so was the idea to inject emotion into the normally sedate wagon category."

One of the more interesting integrations of form and function is found in the seamless roof load management system. Rather than stylized stanchions, brackets and cross bars that protrude above the roof line, the Cadillac CTS Sport Wagon's system blends with the roofline, maintaining an uninterrupted appearance. The center section of the roof panel angles downward inside the roof edges, allowing an unobtrusive placement of the cross bars - and creating a subtle fin effect at the trailing edges of the rear panels.

Powertrains
Direct injection technology helps the Cadillac CTS offer more power while maintaining fuel economy and lowering emissions. It delivers fuel more precisely to increase the efficiency of combustion. This means less fuel is consumed and lower emissions created.

With the Cadillac CTS Sport Wagon's 3.6L V-6, direct injection translates to 304 horsepower (227 kW)*, no loss of fuel efficiency and a 25-percent drop in cold-start hydrocarbon emissions. It also runs on less expensive regular unleaded gasoline. The Sport Wagon's fuel economy is expected to be similar to the peak rating of the existing sport sedan's 26 mpg highway rating. The standard 3.6L VVT engine that produces 263 horsepower (196 kW) and 253 lb.-ft. of torque (343 Nm) serves as the base engine in North America.

Just like the Cadillac CTS sport sedan, the V-6 engines are matched with fuel-saving six-speed transmissions, including an Aisin six-speed manual or an electronically controlled Hydra-Matic 6L50 six-speed automatic. As is the case on the sport sedan, Cadillac CTS Sport Wagon includes AWD as an option.

An efficient 2.9L turbo-diesel engine is being developed for Cadillac CTS models primarily in European and Asian markets. It is a compact, dual overhead cam, four-valve V-6 engine from GM's family of diesel engines that delivers optimal fuel economy as well as reduced emissions and noise. The engine is rated at 184 kW (250 hp).

Driving dynamics
The robust and dynamic CTS chassis infuses the new wagon with a great balance of performance and luxury. It uses an independent short/long arm ( SLA) front suspension system and a multi-link rear suspension.
The multi-link rear suspension features a fully isolated subframe that helps deliver excellent suspension kinematics, contributing to a superior ride and excellent handling.

Cadillac CTS Sport Wagon Preliminary Specifications

    * Vehicle type: four-door, five-passenger rear-wheel-drive/all-wheel-drive wagon
    * Wheelbase: 113.4" / 2880mm
    * Length: 191.3" / 4859 mm
    * Width: 72.6" / 1842 mm
    * Height: 59.1" / 1502 mm
    * Track: 61.8" / 1570 mm (front); 62" / 1575 mm (rear)
    * Engines: 3.6L VVT V-6 (263 hp / 196 kW) 3.6L V-6 VVT DI (304 hp / 227 kW)
    * Transmissions: Aisin six-speed manual or Hydra-Matic 6L50 six-speed automatic
    * Suspension: four-wheel independent: MacPherson strut front; multilink rear, progressive rate coil springs, monotube shock absorbers
    * Steering: variable-assist rack-and-pinion
    * Brakes: four-wheel disc; aluminum or iron dual-piston front calipers; aluminum or iron single-piston rear calipers
    * Wheels: 17-inch, 18-inch or 19-inch aluminum
    * EPA luggage capacity: 25 cu ft / 720 l (behind rear seats)
    * EPA total volume: 121.9 cu ft / 3452 l