초록 ▼

A plurality of electrical fluid pressure control valves or a plurality of groups each comprised of a plurality of electrical fluid pressure control valves are operatively associated with respective power supply replays. The electrical fluid pressure control valves and a plurality of electrical switc

A plurality of electrical fluid pressure control valves or a plurality of groups each comprised of a plurality of electrical fluid pressure control valves are operatively associated with respective power supply replays. The electrical fluid pressure control valves and a plurality of electrical switch valves are connected in parallel to a power source. A plurality of failure sensors are associated with the respective electrical fluid pressure control valves or the respective groups so as to detect whether an electrical system failure in any one of the electrical fluid pressure control valves or the groups occurs. If occurs, failure control unit is operable to control a corresponding one of the power supply relays so as to cause a corresponding one of the electrical switch valves to selectively connect a corresponding one of the wheel cylinders to a master cylinder.

대표청구항 ▼

[ What is claimed is:] [1.] A vehicle brake control system comprising:brake operation sensor means for detecting an amount of operation of a brake pedal and providing a corresponding output signal;a plurality of electrical fluid pressure control valves operative to adjust brake fluid pressure to be

[ What is claimed is:] [1.] A vehicle brake control system comprising:brake operation sensor means for detecting an amount of operation of a brake pedal and providing a corresponding output signal;a plurality of electrical fluid pressure control valves operative to adjust brake fluid pressure to be transmitted from a source of fluid pressure to wheel cylinders;brake fluid pressure control means for controlling operation of said electrical fluid pressure control valves based on the output signal from said brake operation sensor means;a master cylinder for transmitting to the wheel cylinders in response to operation of the brake pedal;a plurality of electrical switch valves connected between said electrical fluid pressure control valves and the wheel cylinders and between said master cylinder and the wheel cylinders and adapted to permit selective connection between the wheel cylinders and said electrical fluid pressure control valves and between the wheel cylinders and said master cylinder; andswitch control means for controlling operation of said electrical switch valves,said electrical fluid pressure control valves being associated with respective wheels or with respective ones of a plurality of wheel groups each comprised of a plurality of wheels, and said electrical switch valves being associated with the respective electrical fluid pressure control valves or with respective ones of a plurality of control valve groups each comprised of a plurality of electrical fluid pressure control valves,a plurality of power supply relays associated with the respective fluid pressure control valves or with respective ones of a plurality of control valve groups each comprised of a plurality of electrical fluid pressure control valves so that the fluid pressure control valves and the switch valves are connected in parallel to a power source through the associates relays,a plurality of failure sensor means associated with the respective electrical fluid pressure control valves or with respective ones of control valve groups each comprised of a plurality of fluid pressure control valves for sensing a failure, andfailure control means operative when a failure in any of said electrical fluid pressure control valves or said groups of the same is detected by said failure sensor means and adapted to control a corresponding one of said power supply relays so as to cause only a corresponding one of said electrical switch valves associated with the fluid pressure control valves or the groups of the same in which the failure is detected to connect a corresponding one of the wheel cylinders to said master cylinder.