Vehicle antiskid control apparatus with flow rate control valve

Details Vehicle antiskid control apparatus with flow rate control valve Vehicle antiskid control apparatus with flow rate control valve

1987-06-03

1988-10-25

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

188181A, 303 68, 303116, 303117, 303110, B60T 8087

Patent

active

047799340

ABSTRACT:
An antiskid apparatus provided in a communicating passage extending between a master cylinder and a brake cylinder in a brake system for a vehicle includes a flow rate control valve provided in a discharge passage which connects a pressure regulating chamber and a damping valve. The flow rate control valve includes a valve body having a flow path which defines a part of the discharge passage, and a valve member disposed in such a manner as to be reciprocal along the flow path. The valve member is normally separated from a valve seat formed on the valve body by the action of a spring in order to open the flow path. When subjected to pressure supplied from the pressure regulating chamber, the valve member is brought into contact with the valve seat to close the flow path. The valve member is provided with an orifice which provides communication between the flow path and a portion of the discharge passage on the side thereof which is closer to the pressure regulating chamber. Thus, the response of the flow rate control valve is improved, and it is possible to facilitate the production thereof and lower the production cost of the apparatus.

REFERENCES:
patent: 4353440 (1982-10-01), Farr
patent: 4377221 (1983-03-01), Farr
patent: 4401348 (1983-08-01), Farr
patent: 4474413 (1984-10-01), Farr
patent: 4553651 (1985-11-01), Gaiser et al.
patent: 4610483 (1986-09-01), Matsumoto et al.
patent: 4725102 (1988-02-01), Ando et al.
patent: 4736823 (1988-04-01), Ando et al.

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