Invention Grant
- Patent Title: Vehicle park system and method for shift out of park assist
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Application No.: US16043864Application Date: 2018-07-24
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Publication No.: US10571023B2Publication Date: 2020-02-25
- Inventor: Vijay A. Neelakantan , Marc H. Sullivan , Lawrence A. Kaminsky
- Applicant: GM Global Technology Operations LLC
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Agency: Quinn IP Law
- Main IPC: B60W10/08
- IPC: B60W10/08 ; F16H63/34 ; B60W10/18

Abstract:
A method of controlling a vehicle park system in a shift out of park includes receiving a shift out of park request, and commanding a park actuator to rotate an actuator shaft operatively connected to a park pawl movable from an engaged position in which the park pawl is engaged with a park gear, to a disengaged position in which the park pawl is disengaged from the park gear. The method includes determining whether a detent lever operatively connected to the park pawl has moved towards an out of park position within a predetermined period of time after commanding the park actuator to rotate the actuator shaft, and then commanding an electric propulsion motor to apply torque to the transmission output shaft to assist the park actuator if the detent lever has not moved towards the out of park position within the predetermined period of time.
Public/Granted literature
- US20200032902A1 VEHICLE PARK SYSTEM AND METHOD FOR SHIFT OUT OF PARK ASSIST Public/Granted day:2020-01-30
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