The invention discloses a brake-by-wire and pedal-force feedback system and a braking method. In the braking process, a liquid infusion device cuts off a communication passage between a working cavity and an outlet of a plunger pump, so that a pedal-force control system and a system-pressure control system are totally separated each other; therefore, the dependence of pedal feedback force on the system pressure is avoided, namely the main cylinder pressure and the system pressure are separately controlled; the phenomenon that when ABS braking is performed, the fluctuation of the system pressure leads to the fluctuation of the main cylinder pressure, and the pedal feedback force fluctuates is avoided, so that the independent control of pedal feedback force is realized; a main braking cylinder is simplified into a single-end structure, so that the processing difficulty of a complicated main braking cylinder is reduced, and the leaking problem of the complicated main braking cylinder is solved. When brake-by-wire is failed, braking liquid in the working cavity of the main braking cylinder passes through the liquid infusion device and then is applied on a braking wheel cylinder, so that standby brake of a vehicle is realized.
Brake-by-wire and pedal-force feedback system and braking method
2016-01-27
Patent
Electronic Resource
English
IPC: | B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF |