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The BMW Vision Effficient Dynamics Plug-in Hybrid

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On: Tue, May 11, 2010 at 8:13AM | By: Sherry Christiansen

The BMW Vision Effficient Dynamics Plug-in Hybrid

The BMW Vision concept car clearly demonstrates that the Efficient Dynamics are fully compatible even when adapted to a sports car. This 2+2-seater with plug-in full-hybrid technology, combines the performance of a BMW “M” vehicle with a standard of fuel efficiency that, by far, exceeds other hybrids. This outstanding result is made possible by the combination of BMW ActiveHybrid components with an extremely economical combustion engine, and cutting edge aerodynamic qualities.

BMW’s futuristic car has an astonishing physical appearance and unparalleled fuel economy. The three-cylinder turbo-diesel/electric plug-in has batteries with one electric motor on each axle (in the front and rear of the car). The Vision’s main components are the drive train and battery technology.

BMW has set a goal to create a car that would be as fast as a V8 M3, yet fuel efficient enough to make a significant environmental impact. The concept car is not yet in the production stages, but the plan has been set to create a 356hp engine and electric motor, and peak torque at 590 foot-pounds. Acceleration to 62 mph will take only 4.8 seconds and speed tops out at 155 mph (most hybrid/electric vehicles have top speeds of around 100 mph). Average fuel consumption will be a combined 62.6 MPG.

One electric motor sits between the diesel engine and transmission and produces 33 hp (51 hp peak). It can run on its own, without the combustion engine, making the Vision what's considered an active hybrid, as opposed to a mild hybrid where the combustion engine always powers the car. The second motor powers the front axle; it produces 80 hp (continuously), 112 hp (in 30-second bursts), or 139 hp (in 10-second bursts). The two motors also act as brakes and regenerate power in the lithium-polymer battery pack that runs in a tunnel along the floor of the car.

The battery pack contains 98 lithium-polymer cells which deliver 111 watt-hours. Each cell is equal to two laptop batteries. For periods of up to 30 seconds, each cell develops 1,200 amps. The Vision will fully charge from a 220-volt, 16-amp circuit, in just 2.5 hours. Conversely, you would need to charge the battery overnight if plugged into a 120 volt U.S. power outlet.

The Vision will have a range of 431 miles, 31 miles in all-electric mode, which is about the same as the Chevrolet Volt, plus 400 miles from the 6.6 gallon fuel tank.

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