Invention Grant
- Patent Title: Method and apparatus for controlled stopping of internal combustion engine
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Application No.: US15967961Application Date: 2018-05-01
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Publication No.: US10677212B2Publication Date: 2020-06-09
- Inventor: Suresh Gopalakrishnan , Lei Hao , Chandra S. Namuduri , Paul S. Lombardo , Chunhao J. Lee , Alexandru Rajala , Neeraj S. Shidore , Farzad Samie , Norman K. Bucknor , Dongxu Li
- 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: F02N11/08
- IPC: F02N11/08

Abstract:
A method of controlled stopping an internal combustion engine having a stop-start mode and starter assembly includes detecting when the stop-start mode is active. The method also includes monitoring current rotational speed and position of the engine. The method additionally includes determining when the current rotational position is within a predetermined range of a target stop rotational position and the current rotational speed is less than a threshold rotational speed, and afterward energizing the starter assembly to engage the engine. The method also includes establishing a time delay following energizing the starter assembly to confirm engagement of the starter assembly with the engine. Furthermore, the method includes applying a torque by the starter assembly to stop the engine at the target stop position. A vehicle powertrain employing the engine equipped with the stop-start mode, the starter assembly, and an electronic controller configured to execute the method is also provided.
Public/Granted literature
- US20190338742A1 METHOD AND APPARATUS FOR CONTROLLED STOPPING OF INTERNAL COMBUSTION ENGINE Public/Granted day:2019-11-07
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