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:
Apr. 24, 2012
Filed:
May. 12, 2009
Hideto Takeda, Kariya, JP;
Akihiro Matsuyama, Kariya, JP;
Noriyuki Kobayashi, Ichinomiya, JP;
Yugo Osaka, Nagoya, JP;
Hideto Takeda, Kariya, JP;
Akihiro Matsuyama, Kariya, JP;
Noriyuki Kobayashi, Ichinomiya, JP;
Yugo Osaka, Nagoya, JP;
Denso Corporation, Kariya, Aichi-Pref., JP;
Abstract
An exhaust gas purification device includes an exhaust pipe defining an exhaust passage, a first SOadsorption portion having a first SOadsorption material provided in the exhaust passage, a second SOadsorption portion having a second SOadsorption material provided in the exhaust passage, and a NOcatalyst provided downstream of the first SOadsorption portion and the second SOadsorption portion in the exhaust passage. The first SOadsorption material is configured to adsorb SOin the combustion gas at a temperature lower than a first set temperature. The second SOadsorption material is configured to store SOin the combustion gas at a temperature equal to or higher than a second set temperature, and the stored SOcan be kept at a temperature lower than the second set temperature. Therefore, the exhaust gas purification device can adsorb SOin the exhaust gas with high efficiency.