The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 09, 2020
Filed:
May. 01, 2018
GM Global Technology Operations Llc, Detroit, MI (US);
Suresh Gopalakrishnan, Troy, MI (US);
Lei Hao, Troy, MI (US);
Chandra S. Namuduri, Troy, MI (US);
Paul S. Lombardo, Ferndale, MI (US);
Chunhao J. Lee, Troy, MI (US);
Alexandru Rajala, Farmington Hills, MI (US);
Neeraj S. Shidore, Novi, MI (US);
Farzad Samie, Franklin, MI (US);
Norman K. Bucknor, Troy, MI (US);
Dongxu Li, Troy, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
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.