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:
Jun. 15, 2021
Filed:
Jun. 08, 2020
Hyundai Motor Company, Seoul, KR;
Kia Motors Corporation, Seoul, KR;
Heechang Oh, Suwon-si, KR;
Dong Hee Han, Seongnam-si, KR;
Hyunjin Kang, Hwaseong-si, KR;
Kwanhee Lee, Suwon-si, KR;
Yeongseop Park, Seoul, KR;
Seungwoo Hong, Seoul, KR;
Jonghyeok Lee, Hwaseong-si, KR;
Yong Kak Choi, Seoul, KR;
HYUNDAI MOTOR COMPANY, Seoul, KR;
KIA MOTORS COMPANY, Seoul, KR;
Abstract
An apparatus for diagnosing an exhaust gas recirculation (EGR) valve includes: an EGR apparatus including an EGR line connecting an exhaust line and an intake line and an EGR valve installed in the EGR line; an electric supercharger installed in the intake line to change an internal pressure of an intake manifold; a manifold pressure sensor measuring the internal pressure of the intake manifold; and a controller that when an engine is stopped while a vehicle is running, learns on an amount of opening of the EGR valve, diagnoses a fixation of the EGR valve and e a leakage of the EGR valve based on the internal pressure of the intake manifold detected by the manifold pressure sensor.