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. 22, 2014
Filed:
Jul. 23, 2009
Takamitsu Asanuma, Mishima, JP;
Yoshihisa Tsukamoto, Susono, JP;
Kazuhiro Umemoto, Susono, JP;
Junichi Matsuo, Susono, JP;
Hiromasa Nishioka, Susono, JP;
Takamitsu Asanuma, Mishima, JP;
Yoshihisa Tsukamoto, Susono, JP;
Kazuhiro Umemoto, Susono, JP;
Junichi Matsuo, Susono, JP;
Hiromasa Nishioka, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An internal combustion engine in which an SOtrap catalyst () for trapping SOcontained in the exhaust gas contains an oxygen adsorbing and releasing material () which can adsorb SOcontained in the exhaust gas and an SOstorage material () which can store SOin the form of sulfates. The SOwhich is contained in the exhaust gas is chemically adsorbed at the oxygen adsorbing and releasing material () without being oxidized. If the temperature of the SOtrap catalyst () becomes higher than the start temperature of adsorbed SOmovement, the SOwhich is chemically adsorbed at the oxygen adsorbing and releasing material () is oxidized and stored in the form of sulfates in the SOstorage material ().