Deceleration detecting type proportioning valve for vehicle

Details Deceleration detecting type proportioning valve for vehicle Deceleration detecting type proportioning valve for vehicle

1978-07-11

1980-04-22

Reger, Duane A.

Fluid-pressure and analogous brake systems

Inertia control

303 6C, B60T 814

Patent

active

041991974

ABSTRACT:
A deceleration detecting type proportioning valve for a vehicle arranged in combination with a deceleration detecting valve. Under a no load or light load condition of the vehicle, when deceleration caused by a braking operation reaches a preset value, a deceleration detecting valve is closed. Following this, the proportioning valve which is by-pass connected to the deceleration detecting valve performs proportioning control to provide a controlled hydraulic brake pressure for each rear wheel cylinder to prevent locking of rear wheels. Under a maximum or heavy load condition, even when the deceleration detecting valve closes, the proportioning valve serves to open the hydraulic brake pressure passage to ensure communication between a master cylinder and the rear wheel cylinder to effect increase in hydraulic brake pressure for the latter to the same degree as front wheel cylinders so that insufficiency in the braking force on the rear wheels can be prevented.

REFERENCES:
patent: 3385308 (1968-05-01), Farr
patent: 4116493 (1978-09-01), Hayashida

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