Electric power train BMW ActiveE.

http://www.eurocarnews.com - BMW USA - Brake Energy Regeneration: drive and slow down with the accelerator pedal. The driving experience of the BMW ActiveE is enhanced by the possibility of slowing down using the accelerator pedal via brake energy regeneration. When the driver lifts off the accelerator pedal, the electric motor becomes a generator that feeds the electricity gained from kinetic energy back into the vehicle battery. At the same time, braking torque is created, which effectively slows the vehicle down. In this way, the accelerator pedal becomes a "drive pedal". In urban traffic around 75 percent of all deceleration can be accomplished without using the brake pedal at all. Intensive use of this recuperation of energy via the motor also results in a range increase of up to 20 percent. Only when the driver wishes to slow down faster by stepping on the brake pedal does the conventional braking system of the BMW ActiveE come into play.

Gliding - "coasting" along the road. - Unlike the MINI E, the BMW ActiveE features a distinctive "intermediate position" of the accelerator pedal, allowing the vehicle to "glide". As a result, the vehicle does not immediately recuperate when the driver decelerates, but "de-clutches" using the electric motor's zero momentum control, thereby utilizing its own kinetic energy to move forward. The BMW ActiveE then "glides" along the road without using energy. Gliding offers a most convenient way of increasing the vehicle's range.

Intelligent vehicle dynamics through Stability Management for Regeneration. - When the driver lets off the accelerator pedal to slow down, the regenerative brake torque only works on the rear wheels. Therefore the BMW ActiveE features an adapted drive-active vehicle dynamics interface, "Stability Management for Regeneration", in order to also ensure vehicle stability during recuperation. The Dynamic Stability Control system has been adapted to the specific characteristics of the electric drive train. Based on various parameters, Stability Management for Regeneration adapts the recuperation level to each driving situation, combining the highest level of recuperation with best possible vehicle stability when decelerating in any situation. Should a situation arise that is critical for vehicle stability when using recuperative or hydraulic brakes, the optimized DSC function ensures constant vehicle stability by means of targeted intervention into the braking system and engine management. Furthermore, DCS ensures that the rear wheels are able to convert the high torque of the electric drive into maximum propulsion when starting off.

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[ROCKSOLID19]

I understand the need for electric cars, I own a Nissan Leaf. For relatively short or medium range distances, the complexity of an engine or indeed a hybrid is not really necessary.