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:
Jun. 18, 2019
Filed:
Dec. 16, 2015
Jatco Ltd, Fuji-shi, Shizuoka, JP;
JATCO LTD, Fuji-shi, JP;
Abstract
Control device for continuously variable transmission () with auxiliary transmission having variator (); hydraulic pressure control circuit () having primary pressure solenoid (); and transmission ratio controller () controlling the transmission ratio of variator () by feedback control. The transmission ratio controller () has a high limiter control unit (FIG.) that, when receiving a high transmission ratio limiting request, performs a high limiter control that limits the transmission ratio to a High limit line. The transmission ratio controller () also has a primary pressure lower limit regulation control unit (FIG.) that, when operation of the high limiter control is started during a time period when the transmission ratio is present at a High transmission ratio side with respect to the high limit transmission ratio, regulates a decrease of a primary command pressure to the primary pressure solenoid up to a High limiter-operated final target primary lower limit pressure.