Control apparatus for hydraulically operated vehicular transmiss

Details Control apparatus for hydraulically operated vehicular transmiss Control apparatus for hydraulically operated vehicular transmiss

1994-06-01

1995-04-25

Buiz, Michael Powell

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Fluid pressure actuator for adjustment of member

F16H 5900

Patent

active

054094216

ABSTRACT:
A control apparatus for a hydraulically operated vehicular transmission has a plurality of hydraulic engaging elements including a first hydraulic engaging element which is kept engaged in a plurality of transmission trains. The control apparatus has an accumulator which is connected, via a branched oil passage, to a working oil passage which is communicated with the first hydraulic engaging element. It also has a control valve which is disposed in the branched oil passage and which can be moved between a first position in which an upstream portion of the branched oil passage on a side of the first hydraulic engaging element and a downstream portion of the branched oil passage on a side of the accumulator are brought into communication with each other and a second position in which the communication is shut off. It further has an oil discharge passage which is connected to a second hydraulic engaging element when the second hydraulic engaging element is disengaged. This oil discharge passage is arranged to be connected to the downstream portion of the branched oil passage in the second position of the control valve.

REFERENCES:
patent: 4867732 (1989-09-01), Soga et al.
patent: 5094129 (1992-03-01), Sugaya et al.
patent: 5230663 (1993-07-01), Reniers
patent: 5263387 (1993-11-01), Reniers

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