Control apparatus for hydraulically operated vehicular transmiss

Details Control apparatus for hydraulically operated vehicular transmiss Control apparatus for hydraulically operated vehicular transmiss

1999-07-16

2000-10-31

Marmor, Charles A

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

477141, F16H 5920

Patent

active

06139470&

ABSTRACT:
A control apparatus for a hydraulically operated vehicular transmission includes a orifice, a bypass path bypassing the orifice and a switching valve provided in the bypass path. The orifice and bypass path are provided in an hydraulic oil supplying path to a hydraulic pressure coupling element provided in said hydraulically operated vehicular transmission. The switching valve shuts off said bypass path in association with the throttle of an engine at a low opening time when a throttle opening degree is equal to or lower than a first predetermined value and at a high opening time when the throttle opening degree is equal to or higher than a second predetermined value which is higher than the first predetermined value.

REFERENCES:
patent: 4282781 (1981-08-01), Iwanaga et al.
patent: 4413536 (1983-11-01), Whitney et al.
patent: 4547178 (1985-10-01), Hayakawa et al.
patent: 4719822 (1988-01-01), Morisawa
patent: 6045483 (2000-04-01), Tamai et al.

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