HYDRAULIC HYBRID SAFETY SYSTEM

摘要

A hydraulic hybrid safety system is provided. The hydraulic hybrid safety system is part of a hydraulic hybrid system that has an over-center bent-axis rotary pump/motor with a yoke, the yoke having a zero yoke angle and a plurality of non-zero yoke angles. The safety system includes a spring that is operable to move the yoke to the zero yoke angle when the hydraulic hybrid system loses electrical power.

主权项

1. A hydraulic hybrid safety system comprising:
a hydraulic hybrid system having:
an over-center bent-axis rotary pump/motor having a yoke, said yoke having a zero yoke angle and a plurality of non-zero yoke angles, said pump/motor having zero torque when said yoke angle is at said zero yoke angle and non-zero torque when said yoke is at a non-zero yoke angle;a high pressure accumulator in fluid communication with said pump/motor;a low pressure accumulator in fluid communication with said pump/motor; and a spring, said spring operable to move said yoke to said zero yoke angle when said hydraulic hybrid system loses electrical power.