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. 27, 1994
Filed:
Nov. 20, 1992
Yoshiaki Ueda, Shizuoka, JP;
Jatco Corporation, Fuji, JP;
Abstract
A fluid pressure control arrangement for an automatic transmission comprises a control unit for calculating a shifting frequency and a determining a frictional coefficient of frictionally engageable elements of the transmission. Fluid pressure correction is calculated based on the shifting frequency and a throttle valve opening angle detected by a sensor. A signal indicative of the fluid pressure correction value is output to actuate a solenoid for effecting adjustment of fluid pressure in the automatic transmission for adjusting the line pressure in accordance with the determined frictional coefficient of the frictionally engageable elements to maintain sufficient engagement capacity of the frictionally engageable elements.