Fly-by-wire limp home and multi-plex system

Details Fly-by-wire limp home and multi-plex system Fly-by-wire limp home and multi-plex system

2006-11-28

2006-11-28

Ho, Ha (Department: 3681)

Planetary gear transmission systems or components

Fluid drive or control of planetary gearing

Fluid controlled mechanical clutch or brake

C475S128000

Reexamination Certificate

active

07140993

ABSTRACT:
An electro-hydraulic control mechanism for use with a multi-speed transmission includes a pair of logic valves, which are manipulated during the ratio interchanges and the ratio establishment by aiding in the distribution of fluid pressure from a plurality of trim valves. The logic valves are retained in specific drive ranges in the event of electrical discontinuance.

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patent: 6350214 (2002-02-01), Murasugi
patent: 6394926 (2002-05-01), Jang
patent: 6520881 (2003-02-01), Long et al.
patent: 1061291 (2000-12-01), None

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