The combination of the motor and transmission, which Audi and technology partner Schaeffler have jointly developed, is the car’s centerpiece. The engineers primarily focused on designing the motor-generator unit (MGU) for even greater efficiency. As a result, acceleration out of corners in particular is enhanced.
Power to the Audi e-tron FE04 is supplied by a battery weighing 200 kilograms that Williams Advanced Engineering has developed and that is identical for all cars. The lithium-ion battery has a capacity of 34 kWh of which 28 kWh may be used. It sits between the driver’s seat and the powertrain.
To transmit the power to the wheels, Audi Sport ABT Schaeffler in the new season is using a high-efficiency transmission with one instead of the previous three gears. A central display provides all the key information on the condition of the MGU, the system temperatures, which are particularly important with an electrically operated race car, and the current charge state of the battery.
The Audi e-tron FE05 will compete in the fifth Formula E season (2018/2019). Thanks to a more powerful battery and improved efficiency, the range of the Formula E race car will double. As a result, a mid-race car swap will no longer be necessary from the 2018/2019 season onward. In addition, the Audi e-tron FE05 has a motor with clearly higher power output than its predecessor.