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. 21, 2010
Filed:
Jun. 08, 2006
John W. Degeorge, Michigan Center, MI (US);
Javed A. Dada, Lapeer, MI (US);
Harish Sivasubramanian, Rochester, MI (US);
Gary K. Lowe, Troy, MI (US);
Gary Binienda, Clarkston, MI (US);
Peter Hartman, West Bloomfield, MI (US);
John W. DeGeorge, Michigan Center, MI (US);
Javed A. Dada, Lapeer, MI (US);
Harish Sivasubramanian, Rochester, MI (US);
Gary K. Lowe, Troy, MI (US);
Gary Binienda, Clarkston, MI (US);
Peter Hartman, West Bloomfield, MI (US);
Chrysler Group LLC, Auburn Hills, MI (US);
Abstract
A system for controlling a torque converter clutch in a vehicle powertrain includes a controller having an input for receiving powertrain operating parameter information. The controller is configured to determine a torque converter speed ratio based on the powertrain operating parameter information and to compare the speed ratio to a specified speed ratio limit. The controller is further configured to determine a target torque converter slip when the speed ratio exceeds or meets or exceeds the specified speed ratio limit; to compare the target slip with a desired slip value based on an vehicle noise, vibration or harshness (NVH) limit; and to control torque transmission of the torque converter clutch based on comparison of the target slip and the desired slip value. A method for controlling a torque converter clutch is also provided.