Hydraulic pressure actuated brake system for rail vehicles

Details Hydraulic pressure actuated brake system for rail vehicles Hydraulic pressure actuated brake system for rail vehicles

1982-09-29

1985-08-27

Chin, Gary

Boots, shoes, and leggings

303 3, 303 15, 303 20, B60T 1368, G06F 1520

Patent

active

045382280

ABSTRACT:
In a brake system the actuator pressure is controlled using a closed loop feedback system where, a system pressure, indicated by a pressure transducer is compared with a predetermined reference value. During the individual control routines, pressures corresponding operation times of inlet and outlet valves are stored in a memory. In the event of a failure of the pressure transducer, a switch is made to an open loop control mode where, starting from a previously established reference pressure, the system pressure can be read from the memory and controlled by appropriate operation of the inlet or outlet valves, to achieve the desired level.

REFERENCES:
patent: 3626177 (1971-12-01), Franke
patent: 3920285 (1975-11-01), Maskery
patent: 3934125 (1976-01-01), Macano
patent: 4043608 (1977-08-01), Bourg et al.
patent: 4093162 (1978-06-01), Takaoka et al.
patent: 4190220 (1980-02-01), Hahn et al.
patent: 4270716 (1981-06-01), Anderson
patent: 4321677 (1982-03-01), Takahashi et al.
patent: 4344138 (1982-08-01), Frasier
patent: 4402047 (1983-08-01), Newton et al.
patent: 4459668 (1984-07-01), Inoue et al.

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