Brake control system and restriction adjusting valve for vehicles

U.S. Patent Number: 5393132

Abstract: A brake control system for a motor vehicle which is equipped with a running state detector for detecting a running state of the motor vehicle so as to adjust a braking pressure in a wheel-braking cylinder of the motor vehicle in accordance with the detected vehicle running state. The brake control system has a first restriction adjusting valve provided between a hydraulic pressure generating source and the wheel-braking cylinder for adjusting the braking pressure to be supplied from the hydraulic pressure generating source to the wheel-braking cylinder, and a second restriction adjusting valve provided between the wheel-braking cylinder and a reservoir for adjusting a braking liquid to be discharged from the wheel-braking cylinder to the reservoir. Also included in the system is a control unit for outputting control signals to the first and second restriction adjusting valves so as to control the braking pressure in the wheel-braking cylinder in accordance with the detected vehicle running state. This arrangement allows setting of the braking hydraulic pressure increasing and decreasing speeds so as to permit a smooth brake control operation.

Inventors: Yogo; Kazutoshi (Nagoya, JP), Kondo; Masuhiro (Chiryu, JP), Wakata; Hideo (Nagoya, JP)

Assignee: Nippondenso Co., Ltd. (Kariya, JP)

Application Number: 08/062,166

Issued: 1995-02-28

Expired: 2007-02-28

Classes: 303/116.1 ; 251/129.07; 251/129.15; 303/119.2

Field of search: 303/119.2,84.1,84.2,113.1,113.2,116.1 251/129.02,129.08,129.15,129.07

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