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:
Jul. 16, 2013
Filed:
May. 02, 2008
Kenichi Tsujimoto, Susono, JP;
Shinya Hirota, Susono, JP;
Kenichi Tsujimoto, Susono, JP;
Shinya Hirota, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi, JP;
Abstract
An object is to provide a technology with which the temperature of exhaust gas can be raised with improved efficiency in cases where a catalyst apparatus including a catalyst having an oxidizing ability is provided in an exhaust passage of an internal combustion engine. According to the present invention, a catalyst apparatusthat is provided in the exhaust passageof the internal combustion engine and to which reducing agent is supplied from upstream when the temperature of the exhaust gas is to be raised is equipped with at least first and second catalystshaving an oxidizing ability. The first catalystis configured in such a way that the exhaust gas flows through a gap between its outer circumferential surface and the inner circumferential surface of the exhaust passage. The second catalystis disposed downstream of the first catalystwith a spacehaving a specific width Ws between it and the first catalyst