The invention relates to a decoupled electromechanical hydraulic integrated brake boosting system. The system comprises an electronic control unit (ECU), an oil can and a hydraulic unit, the hydraulicunit comprises a brake master cylinder, a pedal feeling simulator, a stroke sensor, a boosting master cylinder and a transmission mechanism connected with a piston of the boosting master cylinder, the inner cavity of the brake master cylinder is divided into a first working cavity and a second working cavity by a first piston and a second piston, the first working cavity is connected with a firstnormally closed valve and a first normally open valve, the first normally-closed valve is connected with a pedal feeling simulator, the second working cavity is connected with a second normally-openvalve, the inner cavity of the boosting master cylinder is connected with a second normally-closed valve and a third normally-closed valve, the first normally-open valve and the second normally-closedvalve are both connected with the first output port of the hydraulic unit, and the second normally-open valve and the third normally-closed valve are both connected with the second output port of thehydraulic unit. The brake master cylinder with a small cylinder diameter is adopted, so when the brake master cylinder fails, higher brake pressure can be established through the same pedal force, larger deceleration is achieved, and recovery of all brake energy is achieved.
本发明涉及解耦的机电液压一体制动助力系统,包括电控单元ECU、油壶和液压单元,液压单元包括制动主缸、踏板感觉模拟器、行程传感器、助力主缸、与助力主缸的活塞相连接的传动机构,制动主缸的内腔由第一活塞、第二活塞分为第一工作腔、第二工作腔,第一工作腔连接有第一常闭阀、第一常开阀,第一常闭阀与踏板感觉模拟器相连接,第二工作腔连接有第二常开阀,助力主缸的内腔连接有第二常闭阀、第三常闭阀,第一常开阀、第二常闭阀均与液压单元的第一输出口连接,第二常开阀、第三常闭阀均与液压单元的第二输出口连接。本发明采用较小缸径的制动主缸,失效时,相同踏板力可以建立更高的制动压力,实现更大的减速度,实现全部制动能量回收。
Decoupled electromechanical hydraulic integrated brake boosting system
一种解耦的机电液压一体制动助力系统
2020-04-28
Patent
Electronic Resource
Chinese
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |
European Patent Office | 2020
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