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.

Date of Patent:
Oct. 24, 1995

Filed:

Mar. 25, 1993
Applicant:
Inventors:

Fumio Hara, Wako, JP;

Masahiko Yakuwa, Wako, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02D / ;
U.S. Cl.
CPC ...
36443103 ; 36442403 ; 36443111 ; 36443101 ; 123571 ; 123479 ; 123520 ; 1231 / ; 731181 ; 731173 ; 371-51 ; 340459 ; 34087009 ; 340438 ;
Abstract

The present invention provides a diagnostic system for an internal combustion engine which detects abnormalities of input/output objects used in controlling operation of the engine when the engine is in respective predetermined operating conditions, and carries out respective predetermined fail-safe actions when abnormalities of the input/output are detected. When an abnormality of the input/output objects was detected on the last occasion and has also been detected on the present occasion, and at the same time it is determined that a change in the operating environment of the engine has occurred between when the abnormality was detected on the last occasion and when it has been determined on the present occasion, occurrence of the abnormality is finally determined.


Find Patent Forward Citations

Hara, Fumio. (1995). Abnormality diagnostic system for internal combustion engines (U.S. Patent No. 5461569). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5461569

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…