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:
Aug. 25, 2015
Filed:
Dec. 22, 2009
Shigeki Miyashita, Susono, JP;
Shigeki Miyashita, Susono, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-shi, JP;
Abstract
This invention provides a control apparatus for an internal combustion engine that can accurately determine the existence or non-existence of an operational abnormality of a WGV in an internal combustion engine with a turbocharger that is equipped with an EGR system. The internal combustion engine includes a turbocharger, a WGV arranged in an exhaust bypass passage, an EGR valve arranged in an EGR passage, and a pressure sensor that acquires an intake pipe pressure of the internal combustion engine. The existence or non-existence of an operational abnormality of the WGV is determined based on a change in an intake pipe pressure when a valve opening request to the WGV is acquired. At such time, the EGR valve is controlled so as to enter a predetermined open state prior to the valve opening request to the WGV. Further, the existence or non-existence of an operational abnormality of the EGR valve is also jointly determined based on a change in the intake pipe pressure when a valve opening request to the EGR valve is acquired.