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:
Jul. 26, 2011
Filed:
Apr. 23, 2008
Yoshifumi Murakami, Obu, JP;
Yoshifumi Murakami, Obu, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
According to the present invention, a monitoring system for an internal combustion engine includes a fuel injection control means for outputting a fuel injection signal to an injector based on a target fuel injection quantity and a target fuel injection timing according to a driving condition of the engine. The monitoring system further includes a computation means for computing an actual fuel injection quantity and an actual fuel injection timing based on the fuel injection signal, and a determination means for determining whether a fuel injection malfunction exists by comparing the actual fuel injection quantity and the target fuel injection quantity and comparing the actual fuel injection timing and the target fuel injection timing.