Control apparatus for regulating engagement of a fluid operated

Details Control apparatus for regulating engagement of a fluid operated Control apparatus for regulating engagement of a fluid operated

1991-03-11

1991-11-05

Wright, Dirk

Machine element or mechanism

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

Preselected indexed position

F16H 6106

Patent

active

050623214

ABSTRACT:
An electronically mechanized control method for regulating the engagement rate or stroke time of a fluid operated torque transmitting device, wherein the flow rate is controlled through a coordinated control of the supply pressure and an on-off fluid restriction device. At the initiation of a shift involving engagement of the rate controlled torque transmitting device, an appropriate stroke time is determined in terms of a suitable combination of line pressure and fluid restriction to be commanded for the duration of the shift. The on-off fluid restriction device comprises a first orifice which always remains in the servo supply circuit and second orifice which is selectively connected in parallel with the first orifice via a solenoid operated shuttle valve.

REFERENCES:
THM 700-R4 "Principles of Operation" (2nd Ed.) by Hydra-Matic of GMC.
Isuzu Technician Guide "Principles of Operation and Diagnosis" Automatic Transmission 4L30-E.

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