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:
Oct. 18, 2005
Filed:
Dec. 07, 2004
Applicant:
Masahiko Wakairo, Gunma, JP;
Inventor:
Masahiko Wakairo, Gunma, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D041/00 ;
U.S. Cl.
CPC ...
Abstract
A diagnostic system for an internal combustion engine including a plurality of cylinder banks. The system includes a throttle position sensor mounted in each of the cylinder banks, for detecting a throttle opening of a throttle valve of an associated one of the cylinder banks. The throttle openings of the cylinder banks are controlled in accordance with a common target. An ECU makes a check to determine whether the detected throttle openings are same. The ECU determines in accordance with the comparison whether or not there is abnormality in at least one of the throttle valves and the throttle position sensors.