The BMW Group trial vehicle “Power BEV” presented during #NEXTGen explores what is technically possible. The vehicle is fitted with three fifth-generation electric drive units and has a maximum system output in excess of 530 kW/720 hp. This enables it to accelerate from 0 to 100 km/h (62 mph) in comfortably under three seconds.
The development team’s aim here was to build an experimental vehicle which impresses not only with its longitudinal dynamics but also in terms of lateral dynamics. Indeed, as drivers would expect from a BMW, it has been designed not only to be fast in a straight line but also to put a smile on the driver’s face thorough keenly taken corners.
The result is more effective and precise than with a limited slip differential, because actively targeted inputs are possible in any driving situation. By contrast, a limited slip differential always reacts to a difference in rotation speed between the driven wheels.
The drive system comprises three fifth-generation drive units, each of which brings together an electric motor and the associated power electronics and power take-off within a single housing. One is mounted at the front axle and two (a double drive unit) at the rear axle. Another notable aspect of this generation alongside its eye-catching power is that it is entirely free of rare earths. An electric motor of this type will make its series production debut in the BMW iX3. The iX3 will only have one motor, though, rather than three.
It has also allowed the engineers to look even more effectively into the possibilities opened up by two separately controllable electric motors at the rear axle with e-torque vectoring.
And that means, in future series-production vehicle projects, the right technology can be selected for the model at hand. Customers will therefore be provided with the most appropriate technology for their choice of vehicle concept.