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Electric cars roll quietly and without exhaust emissions through the streets of our towns. This includes numerous so-called city cars that are small enough for any parking space. The driver and passenger sit in comfort, enjoying the quiet ride. For this vision of improved city life, car manufacturers are developing electric motors. |
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The vehicle should respond just like one with an internal combustion engine. When the driver lifts his foot off the accelerator, the vehicle should brake. The motor then turns into a generator, applies braking force and feeds energy back into the batteries. If the occupants are to sit in comfort, there must be sufficient interior space. This is possible if the motor is of a small and compact design. In order to fulfil the requirements, a particularly lightweight, compact sensor had to be developed. The solution lies in designing the sensor not as a separate assembly but as an integral part of a rotor bearing. |
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The bearing and integrated sensor are subject to the following requirements: |
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