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. 15, 2014
Filed:
Jun. 29, 2012
Hiroshi Otsuki, Susono, JP;
Shigeki Nakayama, Gotenba, JP;
Hiromasa Nishioka, Susono, JP;
Katsuhiko Oshikawa, Tokyo, JP;
Yoshihisa Tsukamoto, Susono, JP;
Junichi Matsuo, Susono, JP;
Yuichi Sobue, Susono, JP;
Daichi Imai, Susono, JP;
Kou Sugawara, Kakegawa, JP;
Hiroshi Otsuki, Susono, JP;
Shigeki Nakayama, Gotenba, JP;
Hiromasa Nishioka, Susono, JP;
Katsuhiko Oshikawa, Tokyo, JP;
Yoshihisa Tsukamoto, Susono, JP;
Junichi Matsuo, Susono, JP;
Yuichi Sobue, Susono, JP;
Daichi Imai, Susono, JP;
Kou Sugawara, Kakegawa, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A method of removing ash from a wall flow type particulate filter which is arranged in an exhaust passage of an internal combustion engine in which combustion is performed in an excess of oxygen for trapping particulate matter in exhaust gas, using a solid acid which is carried on the particulate filter, renders the state of the particulate filter a state where the exhaust gas which flows into the particulate filter is lowered in concentration of oxygen and the particulate filter is raised in temperature, and then renders the state of the particulate filter a state where the exhaust gas which flows into the particulate filter in an oxidizing atmosphere contains SOx.