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. 11, 2017
Filed:
Apr. 08, 2013
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Yuki Bisaiji, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, Aichi, JP;
Abstract
An internal combustion engine, wherein a hydrocarbon supply valve () and an exhaust gas purification catalyst () are disposed inside an engine exhaust gas passage. When an increase in the temperature of the exhaust gas purification catalyst () caused by hydrocarbons supplied from the hydrocarbon supply valve () is smaller than a predetermined increase amount, and a decrease in the pressure of fuel supplied to the hydrocarbon supply valve () when the hydrocarbons have been injected from the hydrocarbon supply valve () is larger than a predetermined decrease amount, the present invention determines that a blockage is occurring in a hydrocarbon injection channel () when the hydrocarbons have been injected from the hydrocarbon supply valve ().