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:
Jul. 19, 2022
Filed:
Jan. 06, 2020
GM Global Technology Operations Llc, Detroit, MI (US);
Norman K. Bucknor, Troy, MI (US);
Chunhao J. Lee, Troy, MI (US);
Neeraj S. Shidore, Novi, MI (US);
Dongxu Li, Troy, MI (US);
Suresh Gopalakrishnan, Troy, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A controller executes a method to manage an engine connect/disconnect decision in a powertrain having an engine, transmission, electric machine, and a battery pack and power inverter module ('TPIM'). In response to vehicle ground speed being less than a calibrated maximum electric vehicle accelerator pedal signal ('EV') level, the controller calculates a delta APS (“ΔAPS”) value by subtracting a scaled APS value from the actual APS level. The scaled APS value is a scaled variant of a maximum EVvalue selected from a maximum EVStable, the latter populated based on inverter temperature, state of charge of the battery pack, and ground speed. When the ΔAPS value exceeds a threshold, the controller connects the engine to the transmission via an engine disconnect clutch. The engine is disconnected based on acceleration of the vehicle and the above-noted factors.