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:
Jan. 11, 2005
Filed:
Jul. 03, 2003
Yoshiyuki Akao, Yokohama, JP;
Susumu Kohketsu, Tokyo, JP;
Yoshiyuki Akao, Yokohama, JP;
Susumu Kohketsu, Tokyo, JP;
Mitsubishi Fuso Truck and Bus Corporation, Tokyo, JP;
Abstract
A failure detection apparatus for an internal combustion engine includes failure detecting means (S-S) for detecting abnormality of fresh air quantity detecting means (air flow sensor) based on the result of comparison between a fresh air quantity detected by the fresh air quantity detecting means (air flow sensor) and a reference value for the fresh air quantity set by fresh air quantity reference value setting means (S), and an EGR device (EGR passage, EGR valve, target opening setting means, EGR valve control means). The fresh air quantity reference value setting means sets the reference value (S) in accordance with not only the operating state (engine speed N, fuel injection quantity Q, etc.) of the engine but also a target EGR valve opening set by target opening setting means (S, S).