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German auto manaufacturer BMW unveiled their first electric vehicle, the Power BEV at NEXTGen. The vehicle features three fifth-generation electric drive units and has a maximum system output of 530 kW/720 hp. This enables it to accelerate from 0 to 100 kilometers per hour in under three seconds.
The research and development team's aim was to build an experimental vehicle which impresses not only with its longitudinal dynamics but also in terms of dynamics, and the Power BEV has been designer to kbe really fast in a straigth line but also adds a smile on the driver's face when taking corners.
The chassis and the powertrain engineers worked together in order to maximise the car's performance. The two electric motors at the rear axle are controlled separately. This brings the e-torque vectoring into play, which enables maximum drive power to be translated into forward propulsion even in extremely dynamic driving manoeuvres.
The result is more effective and precise than with a limited slip differential, because 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.
BMW says that an electric motor of this type will make its series production debut in the BMW iX3. However the iX3 will feature only one motor. A BMW 5 Series production model served as the donor car for the Power BEV.
BMW also said that integrating a drive system of this type into a production car was a serious technical undertaking, and it has been achieved without compromising cabin space. This makes it far easier to assess this drive concept alongside alternatives.
Building the Power BEV has also allowed the engineers to study more effectively the possibilities opened up by two separately controllable electric motors at the rear axle with e-torque vectoring.
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.
Thoughts About The Power BEV
Well, BMW has finally showcased an all electric vehicle. Yes, the donor car is a 5 series and that makes it look like any other sedan that BMW retails. But at least we know that they're seroius about going to electric way. We wonder if this works better for them and they just introduce electric variants of existing models instead of redesigning a new car alltogther.