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. 06, 1998
Filed:
Sep. 03, 1997
Applicant:
Inventors:
John Fiaschetti, Warren, MI (US);
Douglas M Stander, Grosse Pt. Woods, MI (US);
Zhijian Wu, Rochester Hills, MI (US);
Assignee:
Chrysler Corporation, Auburn Hills, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
701110 ; 73116 ; 731173 ; 123419 ; 123436 ; 701101 ;
Abstract
A method of misfire detection for an internal combustion engine in a motor vehicle includes the step of sampling a misfire indicator and filtering the misfire indicator to provide a filtered misfire indicator. The method also includes the step of selecting one misfire indicator point from the filtered misfire indicator. The method further includes the steps of comparing the one misfire indicator point to a misfire threshold to detect a misfire event and identifying a misfire if a misfire event is detected.