Brake fluid pressure controller having a shut off valve forming

Details Brake fluid pressure controller having a shut off valve forming Brake fluid pressure controller having a shut off valve forming

1995-09-27

1996-12-17

Graham, Matthew C.

Fluid-pressure and analogous brake systems

Speed-controlled

Having a valve system responsive to a wheel lock signal

303 842, 3031162, B60T 848, B60T 842

Patent

active

055845398

ABSTRACT:
A compact, cost-effective, high-performance, highly reliable brake fluid controller functioning both as a antilock controller and a traction controller. This controller is basically a fluid-return type antilock brake controller with a relief valve and a shutoff valve further added thereto. The shutoff valve has a fluid chamber and an atmospheric-pressure chamber that are defined by a piston. A valve body movable together with the piston closes and opens fluid communication between a discharged fluid reservoir and a fluid supply line. During traction control mode, fluid is supplied to the pump from the fluid chamber. With this arrangement, it is possible to omit an intermediate reservoir which was necessary in a conventional controller of this type. It is also possible to reduce the resistance to the suction force of the pump to a minimum.

REFERENCES:
patent: 5195809 (1993-03-01), Burgdorf
patent: 5290098 (1994-03-01), Burgdorf et al.

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