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. 21, 2015
Filed:
Sep. 24, 2009
Kenji Harima, Numazu, JP;
Kenji Harima, Numazu, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-Shi, JP;
Abstract
A control apparatus judges an abnormality of an internal combustion engine. The engine has an external EGR apparatus, including an exhaust gas recirculation passage that connects an exhaust passage with an intake passage, and an EGR valve that can increase and decrease an outside EGR flow quantity that flows back into the intake passage from said exhaust passage through the exhaust gas recirculation passage by being adjusted in its opening angle. The control apparatus acquires an output value of the engine and determines occurrence of abnormality in the external EGR apparatus according to a predetermined criterion based on a difference between an output of the engine in which a first EGR flow quantity is flown back and an output of the engine in which a second EGR flow quantity is flown back.