Pressure regulating valve for an hydraulic vehicle braking syste

Details Pressure regulating valve for an hydraulic vehicle braking syste Pressure regulating valve for an hydraulic vehicle braking syste

1983-10-13

1986-07-22

Stoner, Jr., Bruce H.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

303 24F, B60T 1300, B60T 800

Patent

active

046015205

ABSTRACT:
The invention relates to a pressure regulating valve for an hydraulic vehicle braking system, comprising a housing which has a main cylinder connection and an inlet chamber connected therewith, as well as a wheel cylinder connection and an outlet chamber connected therewith. A piston is arranged between the two chambers and normally leaves open a connection between them. A valve member is adapted to be moved when a certain deceleration force acting upon it is exceeded into a closed position in which it interrupts the connection between the two chambers. Thereupon, when pressure in the inlet chamber continues to increase, the piston enlarges said inlet chamber at the expense of the outlet chamber. A throttle member is arranged in the outlet chamber and normally leaves open the wheel cylinder connection but is adapted to be moved by the flowing brake fluid on sudden brake actuation into a position in which it partially covers the wheel cylinder connection. In this way, when the brake fluid flows too rapidly on sudden actuation of the main cylinder, the brake fluid itself causes its own path to the wheel cylinder connection to be partially blocked, thus preventing an excessively abrupt pressure increase in the--or each of the--connected wheel cylinders.

REFERENCES:
patent: 3319742 (1967-05-01), Cumming
patent: 3572845 (1971-03-01), Johannesen
patent: 4080006 (1978-03-01), Nogami et al.

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