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. 10, 2016
Filed:
Oct. 02, 2013
Hyundai Motor Company, Seoul, KR;
Kia Motors Corp., Seoul, KR;
Seung Bum Kim, Seongnam-si, KR;
Hyundai Motor Company, Seoul, KR;
Kia Motors Corp., Seoul, KR;
Abstract
A method for diagnosing an EGR system, includes: a first measuring step of measuring a pressure in an intake manifold; a second measuring step of measuring a pressure and a temperature between an EGR cooler and an EGR valve; a determining step of calculating and determining an opening area of the EGR valve for satisfying a target flow of EGR using a function of the target flow of EGR, the pressure in the intake manifold, and the temperature and the pressure between the EGR cooler and the EGR valve; and a diagnosing step of diagnosing whether the EGR cooler is abnormal by comparing the temperature measured between the EGR cooler and the EGR valve and a reference temperature with each other at the time of exhausting EGR gas at the determined opening area of the EGR valve.