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. 09, 1991
Filed:
Aug. 15, 1990
Applicant:
Inventor:
Morio Kiuchi, Hiroshima, JP;
Assignee:
Mazda Motor Corporation, Hiroshima, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60K / ;
U.S. Cl.
CPC ...
74844 ; 74851 ;
Abstract
The device of the present invention changes the target value of speed shifting time in an automatic transmission according to the oil temperature of line pressure. According to this device, in the case where the oil temperature of line pressure is high, the quantity of heat generation due to sliding of friction elements can be reduced by shortening the speed shifting time, with the result of improvement of friction elements in durability to heat and reliability.