Low loss, compact design for greater fuel and space efficiency.
This unit is composed of a motor, generator, and power split device. The Prius PHV has relocated the reduction gear mechanism (the reduction gear mechanism which amplifies the motor’s torque) to parallel gears as the drive motor to reduce drive loss by approximately 20%2. Dual-axis structure was used for the motors to reduce the total transaxle length by roughly 12%2. Furthermore, the power control unit is installed on top of the transaxle, making the Hybrid System more compact and lightweight.
Specifications may differ depending on country, region, or model.