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. 16, 2019
Filed:
Nov. 16, 2017
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Chan Hee Won, Seoul, KR;
Hyung Hee Lee, Yongin-si, KR;
Woo Il Chang, Hwaseong-si, KR;
Jun Sung Park, Yongin-si, KR;
Ho Young Kim, Suwon-si, KR;
HYUNDAI MOTOR COMPANY, Seoul, KR;
KIA MOTORS CORPORATION, Seoul, KR;
Abstract
A method for controlling a gear ratio of a continuously variable transmission vehicle includes: a step of detecting a position of a shift lever by a controller; a step of checking, by the controller, a gear ratio variation based on a difference between a desired stage gear ratio and a current gear ratio in a continuously variable transmission when the shift lever is detected to be positioned in a manual range; a step of calculating, by the controller, a gear ratio correction value based on a rate of change of engine RPM when the gear ratio variation is checked as being other than zero after the step of checking the gear ratio variation; and a step of correcting, by the controller, the gear ratio variation in response to the calculated gear ratio correction value after the calculation step.