Hydraulic control system for automatic transmission

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

1987-12-01

1989-05-16

Wright, Dirk

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74868, B60K 4116

Patent

active

048298530

ABSTRACT:
Under idle condition of a vehicle, control valve 90 is "left half position", line pressure modulated by throttle valve 41 is applied to clutch hydraulic servo C.sub.1 through ports .delta., .mu.; and the clutch is held just under connection, line pressure is applied to brake hydraulic servo B.sub.1 through shift valve 52 being under low speed condition;

REFERENCES:
patent: 3225619 (1965-12-01), Schaefer
patent: 4274307 (1981-06-01), Iwanaga et al.
patent: 4474084 (1984-10-01), Sugano et al.
patent: 4481877 (1984-11-01), Takano et al.
patent: 4501175 (1985-02-01), Tatsumi
patent: 4727774 (1988-03-01), Sumiya et al.

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