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:
Mar. 12, 2013
Filed:
Nov. 08, 2010
Youngkee Youn, Seoul, KR;
Youngkee Youn, Seoul, KR;
Hyundai Motor Company, Seoul, KR;
Abstract
An exhaust gas post processing method may include regenerating a diesel particulate filter, reducing a part remaining in the diesel particulate filter by raising the concentration of a reducing agent included in the exhaust gas after the regeneration, oxidizing a part remaining in the diesel particulate filter by raising the concentration of oxygen included in the exhaust gas after the regeneration, and calculating a real ash amount trapped in the diesel particulate filter by detecting a front/rear pressure difference of the diesel particulate filter after the reducing and the oxidation. Accordingly, after regenerating the diesel particulate filter, impurities are sequentially eliminated in the reducing condition and the oxidation condition, and ultimately the real ash amount can be accurately estimated. Further, based on the accurate ash amount, the particulate matter amount can be accurately predicted.