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. 08, 2009
Filed:
Feb. 09, 2004
Hong Jiang, Canton, MI (US);
Bal Sankpal, Canton, MI (US);
Steven Thomas, Bloomfield Hills, MI (US);
Timothy Allen, Livonia, MI (US);
Hong Jiang, Canton, MI (US);
Bal Sankpal, Canton, MI (US);
Steven Thomas, Bloomfield Hills, MI (US);
Timothy Allen, Livonia, MI (US);
Ford Global Technologies, LLC, Dearborn, MI (US);
Abstract
In a motor vehicle driveline including a transfer case whose output is continually connected to a first output, a clutch, operating partially engaged, responds to a control signal to change the degree of clutch engagement, whereby a second output is connected driveably to the first output. A digital computer continually calculates a change in clutch temperature at frequent intervals and updates a running sum of clutch temperature changes. The control causes the clutch to more fully engage if the current calculated clutch temperature exceeds a predetermined reference clutch temperature.