Electro-pneumatic air brake valve and system compatible with a s

Details Electro-pneumatic air brake valve and system compatible with a s Electro-pneumatic air brake valve and system compatible with a s

1975-06-27

1976-07-27

Reger, Duane A.

Fluid-pressure and analogous brake systems

Automatic

Application valve

303 47, B60T 1368

Patent

active

039715965

ABSTRACT:
A vehicle brake actuation system is disclosed containing fluid pressure to operate brake actuators for effectively combining an electro-pneumatic relay system to function with a skid control system. A first valve is connected in the system for releasing a first impulse of fluid pressure from a first container. A second valve is connected to receive the first impulse from the first container, a second pressure impulse from a second container and to release a thrid pressure impulse from the second container to the actuators. A first sensor senses fluid pressure between the first and second valves and produces a first signal in proportion thereto. A second sensor senses fluid pressure between the second valve and the actuators and produces a second signal in proportion thereto. A first logic circuit receives and compares the first and second signals for discriminately controlling communication of the first, second and third impulses with the second valve. A second or skid control logic circuit is operable to override the first logic circuit to discriminately interrupt communication of the first impulse with the second valve. The second valve has a first port for receiving the first impulse. A second port is connected to receive the second impulse. A first solenoid in the first port is normally open and is operable to close for interrupting the first impulse. A second solenoid is in the second port and is normally closed and operable to open for admitting the second impulse to the valve.

REFERENCES:
patent: 2985488 (1961-05-01), Stelzer
patent: 3796468 (1974-03-01), Morse et al.
patent: 3881779 (1975-05-01), Machek

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