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. 20, 2009
Filed:
Mar. 02, 2007
Michael T. Dickinson, Hilliard, OH (US);
Michael T. Dickinson, Hilliard, OH (US);
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
A torque converter lockup clutch control system is provided for an associated automatic transmission. The system includes a torque converter having an impeller operatively coupled to an associated internal combustion engine and a turbine operatively coupled to an input shaft of the associated automatic transmission. A lockup clutch is disposed within the torque converter for selectively locking the impeller to the turbine. A pressure regulator is operatively coupled to the torque converter for adjusting the pressure of a working fluid to at least one shift clutch of the associated automatic transmission in response to a speed differential between the impeller and turbine of the torque converter. A shift clutch slip detector is provided for detecting a slip condition of the at least one shift clutch of the associated automatic transmission and outputs a slip value. A processing component is then provided for receiving the slip signal and prohibiting the lockup clutch from entering into an engaged state when the slip value exceeds a predetermined shift clutch slip threshold.