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. 09, 2019
Filed:
Sep. 02, 2015
Hyundai Motor Company, Seoul, KR;
Byung Jun Sung, Anyang-si, KR;
HYUNDAI MOTOR COMPANY, Seoul, KR;
Abstract
A synchronization control method includes controlling an engine speed to follow a motor speed as a target speed of the engine when synchronization between the engine speed and the motor speed starts according to a demand for the lock-up of the engine clutch while travelling under the EV mode with the engine clutch opened; estimating the engine speed at a time of a transmission gear ratio change at which the motor speed increases and reaches a preset motor speed, wherein the transmission gear ratio change is carried out at the preset motor speed; calculating the motor speed, which is reduced after the transmission gear ratio change, by using the preset motor speed and information on a gear ratio before and after the transmission gear ratio change; and controlling the engine speed by resetting the target speed to the calculated motor speed as a new target speed of the engine.