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:
May. 27, 2014
Filed:
Aug. 16, 2011
Kihoon Nam, Gunpo, KR;
Myoungho Sunwoo, Seoul, KR;
Minkwang Lee, Seoul, KR;
Yeongseop Park, Seoul, KR;
Byounggul OH, Hwaseong-si, KR;
Kihoon Nam, Gunpo, KR;
Myoungho Sunwoo, Seoul, KR;
Minkwang Lee, Seoul, KR;
Yeongseop Park, Seoul, KR;
Byounggul Oh, Hwaseong-si, KR;
Hyundai Motor Company, Seoul, KR;
IUCF-HYU (Industry-University Cooperation Foundation Hanyang University), Seoul, KR;
Abstract
An EGR system control method of an engine may include calculating a target mass flux ({dot over (m)}) of EGR gas flowing an EGR line, calculating an effective flowing area (EFA) of an EGR valve disposed on the EGR line, calculating an EGR flow sensitivity by dividing the target mass flux with the effective flowing area, and controlling a real opening rate of the EGR valve by applying the EGR flow sensitivity to a target opening rate of the EGR valve. Accordingly, a gain value is varied on a real time according to an effective flowing area of the EGR valve and a target mass flux of EGR gas such that real opening rate of an EGR valve is accurately and precisely controlled.