Hydraulic control system for hydraulically actuated automatic transmission, has park servo mechanically moving park lock mechanism to place transmission in out of park condition when manual and latch valves are in out of park positions

摘要

The system (100) has a latch valve assembly (120) comprising a latch valve movable between a park position and an out of park position. A park lock mechanism is mechanically coupled to a park servo (122). The park servo mechanically moves to the park lock mechanism to place a transmission in the park condition when the manual valve and the latch valve are in the park positions. The park servo mechanically moves the park lock mechanism to place the transmission in the out of Park condition when a manual valve (160) and the latch valve are in the out of park positions.