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:
Feb. 25, 2014
Filed:
May. 05, 2011
Christopher E. Whitney, Commerce, MI (US);
Jeremy V. Horgan, Northville, MI (US);
Scott A. Hearld, Waterford, MI (US);
Lars Mikael Buur, Brighton, MI (US);
Ryan Goode, Howell, MI (US);
Krishnendu Kar, South Lyon, MI (US);
Christopher E. Whitney, Commerce, MI (US);
Jeremy V. Horgan, Northville, MI (US);
Scott A. Hearld, Waterford, MI (US);
Lars Mikael Buur, Brighton, MI (US);
Ryan Goode, Howell, MI (US);
Krishnendu Kar, South Lyon, MI (US);
Abstract
A powertrain system includes an engine control module that generates a negative torque transition signal based on a pending negative torque event of an engine. A transmission control module receives the negative torque transition signal from the engine control module. The transmission control module increases a slip speed of a torque converter clutch in preparation for the pending negative torque event by adjusting pressure in the torque converter clutch prior to the pending negative torque event. The transmission control module decreases the slip speed in the torque converter clutch based on completion of a transition at least one of to the pending negative torque event and from the pending negative torque event.