Regenerative braking system for car.

摘要

In a regenerative braking system, the overall braking torque required is determined, the pump/motor (14) is controlled to have its maximum pumping capacity, and an electromagnetic proportional air control valve (70) is used to supplement the short capacity when the required overall braking torque exceeds the maximum pumping capacity and a brake pedal is operated. The control valve (70) is exclusively used for conventional braking in response to the position of the brake pedal (57) when the car speed is below a predetermined low speed.