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:
Dec. 11, 2012
Filed:
Jan. 04, 2010
Paul G. Otanez, Troy, MI (US);
Chunhao J. Lee, Troy, MI (US);
Farzad Samie, Franklin, MI (US);
Scott A. Hearld, Waterford, MI (US);
Xu Chen, Ann Arbor, MI (US);
Daniel J. Wickman, Plymouth, MI (US);
Xuefeng Tim Tao, Northville, MI (US);
Paul G. Otanez, Troy, MI (US);
Chunhao J. Lee, Troy, MI (US);
Farzad Samie, Franklin, MI (US);
Scott A. Hearld, Waterford, MI (US);
Xu Chen, Ann Arbor, MI (US);
Daniel J. Wickman, Plymouth, MI (US);
Xuefeng Tim Tao, Northville, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method for responding to a rapid change in engine torque includes monitoring a change in engine torque and determining a rapid change in engine torque when the change in engine torque exceeds a threshold change in engine torque. Subsequent to determining a rapid change in engine torque, an increase in the torque converter slip is provided by reducing the torque converter clutch pressure command by a selected value and thereafter the feedback control is deactivated for a predetermined duration. Subsequent to the predetermined duration, the feedback control is reactivated to decrease the torque converter slip toward a desired torque converter slip value.