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:
Nov. 13, 2012
Filed:
Mar. 17, 2008
Nobumoto Ohashi, Susono, JP;
Atsushi Hayashi, Susono, JP;
Masahide Iida, Susono, JP;
Kotaro Hayashi, Mishima, JP;
Nobumoto Ohashi, Susono, JP;
Atsushi Hayashi, Susono, JP;
Masahide Iida, Susono, JP;
Kotaro Hayashi, Mishima, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
An object of the invention is to recover the capability of an exhaust gas purification apparatus provided in an exhaust passage of an internal combustion engine with improved reliability. According to the invention there are provided recovery control execution unit for executing a recovery control in which the temperature of the exhaust gas purification apparatus is raised by supply of reducing agent to a precatalyst to thereby recover the capability of the exhaust gas purification apparatus and prohibition range setting unit for setting a recovery control prohibition range that is an operation range of the internal combustion engine in which execution of the recovery control by the recovery control execution unit is prohibited. The higher the degree of deterioration of the precatalyst is, the higher the maximum values of the engine torque and the engine revolution number in the recovery control prohibition range are set to be.