초록 ▼

An improved brake pressure control system for vehicles is proposed which employs a brake pressure detecting means, wheel speed sensors and a data processor for antilocking control, booster control and distribution of brake force. The control system regulates braking pressure to insure maximum or nea

An improved brake pressure control system for vehicles is proposed which employs a brake pressure detecting means, wheel speed sensors and a data processor for antilocking control, booster control and distribution of brake force. The control system regulates braking pressure to insure maximum or nearly maximum brake effectiveness under all operating conditions.

대표청구항 ▼

A brake pressure control system for a vehicle having a hydraulically operated front brake and a hydraulically operated rear wheel brake, a brake pedal actuable by an operator, and hydraulic means for operating said front and rear brake means upon operation of said brake pedal, comprising; said hydra

A brake pressure control system for a vehicle having a hydraulically operated front brake and a hydraulically operated rear wheel brake, a brake pedal actuable by an operator, and hydraulic means for operating said front and rear brake means upon operation of said brake pedal, comprising; said hydraulic means including brake pressure control means for electronically controlling the brake pressure of said front wheel brake and said rear wheel brake independently of each other; pedal force detecting means for measuring the amount of force applied to said brake pedal; wheel speed detecting means for detecting the rotational speed of each of the wheels; brake pressure detecting means for detecting the brake line pressure controlled by said brake pressure control means; and data processing means for giving signals to said brake pressure control means and being programmed (1) for controlling the deceleration of the vehicle calculated with information obtained by said wheel speed detecting means according to a desired deceleration calculated with the information obtained by said pedal force detecting means; (2) to relieve and restore the brake pressure to avoid a wheel lock condition when a potential wheel lock is sensed on the basis of the information obtained by said wheel speed detecting means; and (3) to control the distribution of brake pressure between said front wheel brake and said rear wheel according to an ideal distribution computed with presupposed effectiveness coefficient of said brakes, the brake pressure detected by said brake pressure detecting means and the deceleration computed from said wheel speed detecting means when a potential wheel lock condition is not sensed. A brake pressure controller for use with a brake system having a first brake pressure line for supplying pressure to a first wheel brake and a second brake pressure line for supplying pressure to a second wheel brake, said controller comprising a first control means selectively operable by an operator and having a first pressure-receiving portion communicating with said first brake pressure line for supplying fluid pressure thereto and a second pressure-receiving portion communicating with said second brake pressure line for supplying fluid pressure thereto, means for controlling the sum of a thrust acting on said first pressure-receiving portion and a thrust acting on said second pressure-receiving portion in relation to the operator input and to a sensed condition for varying the thrust acting for a given operator input to prevent an undesired braking condition, and a second control means having a third pressure-receiving portion communicating with said first brake pressure line and a fourth pressure-receiving portion communicating with said second brake pressure line and means for varying the relative pressure supplied by said second control means to said first and second brake pressure lines for controlling the difference between a thrust acting on said third pressure-receiving portion and a thrust acting on said fourth pressure-receiving portion.