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. 21, 2009
Filed:
Apr. 13, 2007
Akira Murakami, Dublin, OH (US);
Akira Murakami, Dublin, OH (US);
Honda Motor Co., Ltd., Tokyo, JP;
Abstract
An intake manifold air leak determination system and method for an internal combustion engine including an intake manifold fluidly connected to a plurality of cylinders of the engine and a plurality of fuel injection valves for injecting fuel for the cylinders. Each of the plurality of fuel injection valves corresponds to a respective one of the plurality of cylinders. A fuel cutoff indicating module determines that fuel has been cut from one or more of said plurality of cylinders due to certain operating conditions of the internal combustion engine. An air leak detection module determines whether a significant air leak is occurring at the intake manifold. An air leak fuel cutoff module cuts off fuel supply to the fuel injection valves when the air leak detection module determines that a significant air leak is occurring at the intake manifold. An air leak detection prohibiting module prohibits detection of an air leak at the intake manifold when the fuel cutoff indicating module indicates that fuel has been cut from one or more of the plurality of cylinders.