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. 14, 2019
Filed:
Dec. 01, 2015
Hyundai Motor Company, Seoul, KR;
Fev Gmbh, Aachen, DE;
Jin Ha Lee, Seoul, KR;
Won Soon Park, Seongnam-si, KR;
Jin Woo Park, Suwon-si, KR;
Ki Hyung Joo, Yongin-si, KR;
Sera Lim, Hwaseong-si, KR;
Thomas Wittka, KornelimĂĽnster, DE;
Alexander Vovk, Aachen, DE;
Joschka Schaub, Aachen, DE;
HYUNDAI MOTOR COMPANY, Seoul, KR;
FEV GMBH, Aachen, DE;
Abstract
A method of desulfurizing a lean NOx trap (LNT) of an exhaust purification system provided with the LNT and a selective catalytic reduction (SCR) catalyst includes determining whether a desulfurization feasibility condition of the LNT is satisfied, determining whether a desulfurization demand condition of the LNT is satisfied, and performing desulfurization of the LNT if both of the desulfurization feasibility condition of the LNT and the desulfurization demand condition of the LNT are satisfied, wherein the desulfurization of the LNT is performed by repeating a desulfurization lean mode and a desulfurization rich mode according to whether a mode switching condition due to a desulfurization temperature is satisfied and whether a mode switching condition due to generation of H2S is satisfied.