It’s commonly admitted and demonstrated that the electrical motor is highly adapted to automotive applications. Due to its performance, a fixed gear ratio within the transmission system is sufficient. However, the efficiency of the motor is the highest on a limited range on the torque-speed curve. Some studies have already explained the benefits of efficiency by using two or three-gear ratios for automotive traction applications. Some manufacturers implemented this solution on their vehicles but it’s a mechanical solution. This presentation explores a new way of gearbox conception with a magnetic solution and the possibility of changing its gear ratio.

In this session you will hear about:

• Vehicles autonomously upgraded with a 6% reduction in losses
• No friction on the gearbox
• NVH shifts from low-range frequency to high-range frequency