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.

Date of Patent:
Jan. 29, 2002

Filed:

Jul. 10, 2000
Applicant:
Inventors:

Hiroya Abe, Saitama, JP;

Yoshiharu Saito, Saitama, JP;

Yoshinori Yamamoto, Saitama, JP;

Toru Yamasita, Saitama, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 6/114 ; F16H 4/502 ; F16D 4/325 ;
U.S. Cl.
CPC ...
F16H 6/114 ; F16H 4/502 ; F16D 4/325 ;
Abstract

In a control unit for a torque converter with a lockup mechanism, the surface temperature of a clutch friction material in a lockup clutch is calculated with a surface temperature calculation unit B , the surface temperature of the clutch friction material so calculated is compared with a predetermined first allowable temperature with a surface temperature comparison unit B , and when the surface temperature of the clutch friction material is judged to have reached or exceeded the first allowable temperature, a friction material temperature reduction operating unit B5 is started to operate to reduce the surface temperature of the clutch friction material.


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