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:
Jul. 13, 1993
Filed:
Nov. 27, 1991
Applicant:
Inventor:
Takashi Shibayama, Isehara, JP;
Assignee:
Nissan Motor Co., Ltd., Yokohama, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H / ; F16H / ; B60K / ;
U.S. Cl.
CPC ...
192-0032 ; 192-0075 ; 192-33 ;
Abstract
A torque converter lockup clutch control apparatus operates a lockup clutch to provide a controlled degree of slip between the converter cover and the turbine hub. Cylinder output sensors are provided for monitoring outputs produced in the respective cylinders of an internal combustion engine. The monitored cuylinder outputs are utilized to calculate the amplitude of fluctuation of the torque outputted from the engine. The degree of slip provided in the lockup clutch is changed when the calculated amplitude exceeds a predetermined value.