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:
Sep. 11, 2012
Filed:
Apr. 28, 2008
Keisuke Sano, Susono, JP;
Takaaki Itou, Mishima, JP;
Kimikazu Yoda, Susono, JP;
Kazuhiro Wakao, Susono, JP;
Keisuke Sano, Susono, JP;
Takaaki Itou, Mishima, JP;
Kimikazu Yoda, Susono, JP;
Kazuhiro Wakao, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi-ken, JP;
Abstract
A main exhaust passageand a first bypass passagebypassing the main exhaust passageare provided. An absorbenthaving a function of absorbing HC components and NOx components contained in exhaust gas is provided in the first bypass passage. An underfloor catalystincluding a catalyst with an electric heater (EHC)is provided in a main exhaust passageon a downstream side of a downstream connecting portionin a first bypass passage. A second bypass passagethat provides communication between the main exhaust passagedownstream of the underfloor catalystand the first bypass passageupstream of the absorbentis provided. A first exhaust switching valveis provided in an upstream connecting portion, and a second exhaust switching valveis provided in a main exhaust passage side connecting portion. A pumpis provided in the middle of the second bypass passage