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:
Nov. 03, 2020
Filed:
Jun. 29, 2017
Applicant:
Hyundai Kefico Corporation, Gyeonggi-do, KR;
Inventors:
Jin Wook Baek, Gyeonggi-do, KR;
Lae Kyeom Kim, Gangwon-do, KR;
Assignee:
HYUNDAI KEFICO CORPORATION, Gyeonggi-do, KR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02D 13/02 (2006.01); F01L 13/00 (2006.01); F02D 41/24 (2006.01); F02D 41/00 (2006.01); F02D 41/22 (2006.01);
U.S. Cl.
CPC ...
F02D 13/0207 (2013.01); F01L 13/0015 (2013.01); F02D 41/00 (2013.01); F02D 41/22 (2013.01); F02D 41/2464 (2013.01); F01L 2013/10 (2013.01); F01L 2800/00 (2013.01); F01L 2800/14 (2013.01); F02D 2041/001 (2013.01); Y02T 10/18 (2013.01); Y02T 10/40 (2013.01);
Abstract
A continuously variable valve duration (CVVD) system includes an electronic control unit (ECU) configured to output a command for adjusting an actuator and a controller configured to determine a operation range of a control shaft of the actuator and adjust the control shaft in the determined operation range based on the command of the ECU. The controller positions the control shaft at a predetermined target phase and determines a control state of each target phase based on a target phase value transmitted from the actuator when the control shaft is positioned at the target phase.