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:
Sep. 21, 2021
Filed:
May. 07, 2020
Applicants:
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Inventors:
Assignees:
HYUNDAI MOTOR COMPANY, Seoul, KR;
KIA MOTORS CORPORATION, Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/14 (2006.01); F02D 41/02 (2006.01); F02D 41/00 (2006.01);
U.S. Cl.
CPC ...
F02D 41/1454 (2013.01); F02D 41/0052 (2013.01); F02D 41/0295 (2013.01); F02D 41/1441 (2013.01);
Abstract
A method for controlling an air-fuel ratio based on an oxygen storage amount of a catalyst may include: performing, by a controller, a catalyst oxygen storage amount (OSA) feedback control for a rich control of the air-fuel ratio so that the oxygen storage amount of the catalyst is within a threshold value; and performing, by the controller, a target voltage feedback control for a lean or rich control of the air-fuel ratio so that an output voltage value of an oxygen sensor provided in the rear of the catalyst satisfies a target voltage value.