Railway brake control system arranged to limit maximum brake pre

Details Railway brake control system arranged to limit maximum brake pre Railway brake control system arranged to limit maximum brake pre

1984-09-04

1986-05-06

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Automatic

303 13, 303 60, 303 68, B60T 800, B60T 1000, B60T 1518

Patent

active

045867550

ABSTRACT:
A brake control system for a railway vehicle having separately operated independent and automatic brake controls for controlling brake pressure via a double check valve and a multi-piston relay valve, wherein an adjustable regulating valve is set to exhaust the independent brake control pressure acting on one piston of the multi-piston relay valve when the relay valve delivery pressure (brake cylinder pressure) exceeds a predetermined value, to thereby limit the maximum brake cylinder pressure attainable from the combined independent and automatic brake controls unless the automatic brake pressure exceeds that predetermined value.

REFERENCES:
patent: 3443839 (1969-05-01), Hinrichs et al.
patent: 3456988 (1969-07-01), Gibbons et al.
patent: 3597013 (1971-08-01), Shah
patent: 4013322 (1977-03-01), Worbois et al.
patent: 4223953 (1980-09-01), Cruse
patent: 4375303 (1983-03-01), Tamamori

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