Transmission control valves

Details Transmission control valves Transmission control valves

1995-05-03

1996-10-15

Lorence, Richard M.

192 clutches and power-stop control

Clutches

Operators

192114R, 477131, 91453, F16H 6126

Patent

active

055645437

ABSTRACT:
Shift control valves for controlling the engagement of a transmission friction devices have a solenoid control chamber pressurized to initiate shifting and a latch chamber pressurized to sustain the selective friction device in an engaged position. The latching chamber pressure is delivered through a latch valve which is also solenoid controlled to direct pressure to the chamber when the solenoid is de-energized and to exhaust the latch chamber when the solenoid is energized.

REFERENCES:
patent: 3709064 (1973-01-01), Schaefer et al.
patent: 4351206 (1982-09-01), Lemieux et al.
patent: 4729462 (1988-03-01), Braun
patent: 5048656 (1991-09-01), Braun
patent: 5131514 (1992-07-01), Machida

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