Invention Grant
- Patent Title: Declutch clunk mitigation through torque intervention
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Application No.: US16113604Application Date: 2018-08-27
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Publication No.: US10589746B1Publication Date: 2020-03-17
- Inventor: Derek W. Johnson , David T. Hanner , Shaun D. Hoffman
- 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: B60W30/20
- IPC: B60W30/20

Abstract:
A method for mitigating clunk in a driveline of a vehicle system during a declutch event includes determining a current torque request of a prime mover based on an accelerator pedal position of an accelerator pedal of the vehicle system. The method includes determining a clutch pedal position and determining, via a controller, a clutch pedal speed based on a change of the clutch pedal position over time. The method further includes modifying, via the controller, the current torque request to obtain a modified torque request based on the clutch pedal position and the clutch pedal speed such that a stored potential energy in the driveline is minimized by a time that the clutch pedal of the vehicle system is disengaged during the declutch event.
Public/Granted literature
- US20200062263A1 DECLUTCH CLUNK MITIGATION THROUGH TORQUE INTERVENTION Public/Granted day:2020-02-27
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