In a special operating mode, a controller is programmed to disengage a hydraulically actuated park mechanism without use of engine power. The starter motor is used to rotate the engine-driven pump at sufficient speed to command disengagement of Park. Once park is disengaged, a holding pin is used to maintain the out of park condition without hydraulic pressure or flow.
Method For Disengaging Hydraulic Park Without Engine Power
25.04.2019
Patent
Elektronische Ressource
Englisch
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