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. 16, 2014
Filed:
Dec. 15, 2009
Yoshihisa Kodama, Fuji, JP;
Yasuaki Yoshikawa, Fuji, JP;
Yoshihisa Kodama, Fuji, JP;
Yasuaki Yoshikawa, Fuji, JP;
Jatco Ltd, Fuji-shi, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Abstract
A control device includes a belt slip controller, a limiting determining control unit, and a transmission speed limiter. The device controls a vehicle belt type continuously variable transmission including a primary pulley and a secondary pulley so as to control a gear ratio by controlling a primary hydraulic pressure and a secondary hydraulic pressure. The controller oscillates the secondary hydraulic pressure, extracts an oscillation component of an actual gear ratio when a transmission speed is less than a predetermined value, and controls the secondary hydraulic pressure based on a phase difference between oscillation components. The determining control unit determines whether to limit acceleration, and the limiter limits a transmission speed to less than the predetermined value when the determining control unit makes a determination to limit the acceleration. The controller permits belt slip control while the limiter limits the transmission speed to less than the predetermined value.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile