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:
Mar. 14, 2017
Filed:
Jun. 20, 2012
Shunsuke Toshioka, Susono, JP;
Keishi Takada, Hadano, JP;
Shigeki Nakayama, Gotenba, JP;
Junya Nakajima, Kariya, JP;
Ichiro Yamamoto, Kariya, JP;
Shunsuke Toshioka, Susono, JP;
Keishi Takada, Hadano, JP;
Shigeki Nakayama, Gotenba, JP;
Junya Nakajima, Kariya, JP;
Ichiro Yamamoto, Kariya, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Abstract
An object of the present invention is to provide a technique with which an amount of reducing agent adsorbed to a selective reduction type NOcatalyst provided in an exhaust passage of an internal combustion engine can be controlled to a target adsorption amount. In an exhaust gas purification system for an internal combustion engine according to the present invention, when a reducing agent adsorption amount adsorbed on a selective reduction type NOcatalyst is held at a target adsorption amount, a reducing agent supply amount supplied from a supply apparatus per unit time is controlled to an amount obtained by adding a predetermined amount to a reduction consumption amount, which is an amount of reducing agent consumed per unit time by the selective reduction type NOcatalyst for NOreduction.