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:
Jan. 22, 2019
Filed:
Sep. 24, 2015
Jatco Ltd, Fuji-shi, Shizuoka, JP;
JATCO Ltd, Fuji-Shi, JP;
Abstract
The drive system from the engine () to the drive wheels () of a vehicle is equipped with a torque converter (), which has a lock-up clutch (), and a variator (). Said engined car is provided with a lock-up control means for controlling the engagement/disengagement of the lock-up clutch () and a gear change mode switch-controlling means (FIG.) for performing control to switch between a 'continuously variable gear change mode' and a 'DSTEP gear change mode.' While traveling, the gear change mode switch-controlling means (FIG.) prohibits gear change by the “DSTEP gear change mode” when the detected oil temperature is at or below a lock-up engagement-permitting threshold for permitting engagement of the lock-up clutch () and allows gear change by the “DSTEP gear change mode” when the detected oil temperature is higher than the lock-up engagement-permitting threshold.