Hydraulic control system for automatic transmission system

Details Hydraulic control system for automatic transmission system Hydraulic control system for automatic transmission system

1996-06-07

1998-02-24

Marmor, Charles A.

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

477117, 477130, 475121, F16H 6100

Patent

active

057206945

ABSTRACT:
A hydraulic control system for automatic transmission systems includes: an oil pump, a pressure control valve, a solenoid supply valve, a manual valve, a torque control regulator valve, a control switch valve, an N-D control valve, a 1st-2nd speed shift valve, a 2nd-3rd speed shift valve, a 3rd-4th speed shift valve, a second clutch valve, a third clutch valve, a fourth clutch valve, and an N-R control valve. Accumulators are provided to each supply line of first, second, third and sixth frictional elements to alleviate shock resulting from gear shifting and maintain stability in actuating hydraulic pressure.

REFERENCES:
patent: 4982622 (1991-01-01), Yamamoto et al.
patent: 5085103 (1992-02-01), Ando et al.
patent: 5134903 (1992-08-01), Itoh
patent: 5433124 (1995-07-01), Person
patent: 5441459 (1995-08-01), Inukai et al.
patent: 5507700 (1996-04-01), Niiyama
patent: 5542888 (1996-08-01), Takada et al.
patent: 5569116 (1996-10-01), Jang
patent: 5616093 (1997-04-01), Long et al.

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