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:
Oct. 22, 2013
Filed:
Dec. 21, 2010
Hong Yang, Rochester Hills, MI (US);
Anthony L. Smith, Troy, MI (US);
Shawn H. Swales, Canton, MI (US);
James D. Hendrickson, Oxford, MI (US);
Brendan M. Conlon, Rochester Hills, MI (US);
Jy-jen F. Sah, West Bloomfield, MI (US);
Hong Yang, Rochester Hills, MI (US);
Anthony L. Smith, Troy, MI (US);
Shawn H. Swales, Canton, MI (US);
James D. Hendrickson, Oxford, MI (US);
Brendan M. Conlon, Rochester Hills, MI (US);
Jy-Jen F. Sah, West Bloomfield, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method of executing an electric-only (EV) mode transition in a vehicle includes determining vehicle operating values using a control system, processing the values to identify the transition, and executing the transition to or from the first or second EV mode. The transition is executed by selectively engaging and disengaging the input brake to zero, and by using the first and/or second traction motor to synchronize slip across the input brake. When the transition is from the first to the second EV mode or vice versa, the control system may use multiple speed and torque control phases to enter multiple intermediate modes, e.g., a pair of engine-on electrically-variable transmission modes and a fixed gear mode. A vehicle includes an engine, an input brake, first and second traction motors, and a transmission driven via the motors in a first and second EV mode. The vehicle includes the control system noted above.