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:
Feb. 09, 2016
Filed:
Apr. 15, 2011
Kenji Sakurai, Kyoto, JP;
Toru Kidokoro, Hadano, JP;
Kenji Sakurai, Kyoto, JP;
Toru Kidokoro, Hadano, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken, JP;
Abstract
The exhaust cleaner for internal combustion engine is equipped with NOx storage reduction catalyst () which is disposed in exhaust passage of an internal combustion engine and which absorb and reduce the NOx contained in exhaust gas. The NOx storage reduction catalyst () each include a coating layer that has been formed on the inner wall of cells through which the exhaust passage, the coating layer having the catalytic function. The coating layers have been formed so that the thickness of the coating layer of the NOx storage reduction catalyst () located upstream in the flow of the exhaust gas is smaller than the thickness of the coating layer of the NOx storage reduction catalyst () located downstream. Due to this configuration, the NOx storage reduction catalyst () are inhibit from being poisoned by sulfur and high NOx removal percentage is maintained.