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:
Aug. 04, 2020
Filed:
Apr. 10, 2019
Applicants:
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Inventors:
Jin Woo Choung, Gyeonggi-do, KR;
Kiyoung Kwon, Gyeonggi-do, KR;
Assignees:
HYUNDAI MOTOR COMPANY, Seoul, KR;
KIA MOTORS CORPORATION, Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/02 (2006.01); F02D 41/12 (2006.01); F01N 3/10 (2006.01); F01N 3/20 (2006.01); F02D 41/04 (2006.01); F02D 43/04 (2006.01); F02D 13/02 (2006.01); F02P 5/04 (2006.01); F02P 5/15 (2006.01); F02D 17/02 (2006.01);
U.S. Cl.
CPC ...
F02D 41/027 (2013.01); F01N 3/101 (2013.01); F01N 3/20 (2013.01); F01N 3/2066 (2013.01); F02D 13/0261 (2013.01); F02D 17/02 (2013.01); F02D 41/0295 (2013.01); F02D 41/042 (2013.01); F02D 41/123 (2013.01); F02D 41/126 (2013.01); F02D 43/04 (2013.01); F02P 5/045 (2013.01); F02P 5/15 (2013.01); F01N 2430/06 (2013.01); F01N 2430/08 (2013.01); F01N 2430/10 (2013.01); F02D 2200/0802 (2013.01);
Abstract
A method of controlling oxygen purge of a three-way catalyst may include: performing a fuel cut-off; determining whether a fuel cut-in condition is satisfied after the fuel cut-off; calculating an optimum valve overlap according to an intake amount, an engine rotation speed, and an ignition timing if the fuel cut-in condition is satisfied after the fuel cut-off; controlling a CVVD apparatus to be at the optimum valve overlap; and performing the oxygen purge at the optimum valve overlap.