Brake system for vehicles

Details Brake system for vehicles Brake system for vehicles

1983-08-09

1985-12-24

Reger, Duane A.

Fluid-pressure and analogous brake systems

Load control

Responsive to fluid pressure spring

303 22A, 303 6C, 188195, B60T 818, B60T 826

Patent

active

045602107

ABSTRACT:
A brake system for a vehicle comprises a booster unit including a piston disposed for sliding movement in a cylinder, a pressure chamber defined between the cylinder and the piston, and a valve member arranged for interlocking movement with the brake pedal and disposed slidably in the piston for controlling flow of hydraulic fluid from a fluid pressure source into the pressure chamber. A pressure control valve is disposed between the fluid pressure source and the booster unit for controlling the maximum internal pressure of the pressure chamber of the booster unit depending on the weight of the vehicle sensed by a sensor, and a master cylinder is connected to the piston of the booster unit to supply braking hydraulic fluid at controlled pressure to the front and rear brakes. When the vehicle is light-loaded or no-loaded, the pressure of braking hydraulic fluid supplied to the rear brakes is reduced to lower than that supplied to the front brakes so that the rear wheels may not be locked earlier than the front wheels.

REFERENCES:
patent: 3306678 (1967-02-01), Lepelletier
patent: 3650573 (1972-03-01), Inada et al.
patent: 4453778 (1984-06-01), Smith et al.

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