Hydraulic control apparatus for an automatic transmission of a v

Details Hydraulic control apparatus for an automatic transmission of a v Hydraulic control apparatus for an automatic transmission of a v

1997-06-10

1999-06-22

Ta, Khoi Q.

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

477127, F16H 6100

Patent

active

059137479

ABSTRACT:
A hydraulic control apparatus for an automatic transmission accurately controls a variation in torque generated when a shift lever is turned from an N range into a D range or R range. The hydraulic control apparatus has a pressure governor for hydraulic pressure to be supplied from a spool valve to a clutch, by an actuator, thereby suppressing a variation in output torque of the automatic transmission. The hydraulic pressure governed by the actuator is introduced into the spool valve again, and it is supplied to a forward clutch and a reverse clutch through a hydraulic line switch for switching hydraulic lines communicated to the forward clutch and the reverse clutch from each other.

REFERENCES:
patent: 4616531 (1986-10-01), Ogasawara et al.
patent: 4628774 (1986-12-01), Iwanaga
patent: 4899624 (1990-02-01), Bota et al.
patent: 5425688 (1995-06-01), Raszkowski
patent: 5433124 (1995-07-01), Person
patent: 5651751 (1997-07-01), Jang

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