Arrangement for emulating a J-type relay air valve useable in a

Details Arrangement for emulating a J-type relay air valve useable in a Arrangement for emulating a J-type relay air valve useable in a

1991-01-24

1992-04-14

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Multiple control

Fluid and electric

303 20, 303 16, 303 18, 303101, B60T 1514, B60T 1368

Patent

active

051042037

ABSTRACT:
An electropneumatic locomotive brake system including an emulation routine for electronically simulating the functional operations of a relay air valve and for producing electrical output signals, an application electromagnetic and a release electromagnet receiving the electrical output signals and pneumatically controlling a J-relay air valve, a source of compressed air connected to the J-relay air valve and the application electromagnet and an air brake cylinder connected to the J-relay air valve for establishing the level of compressed air in the air brake cylinder in accordance with an automatic brake request and an independent brake request received from a brake command controller located in the cab of the locomotive.

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patent: 3876262 (1975-04-01), Ferguson et al.
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patent: 4536039 (1985-08-01), Barberis
patent: 4626039 (1986-12-01), Worbois
patent: 4679863 (1987-07-01), Ikeda et al.
patent: 4744607 (1988-05-01), Nagata
patent: 4830437 (1989-05-01), Rumsey
patent: 4904027 (1990-02-01), Skantar et al.

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