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. 03, 2000
Filed:
Aug. 14, 1998
Applicant:
Inventors:
Peter Hohner, Leinfelden-Echterdingen, DE;
Jurgen Schenk, Albershausen, DE;
Hartung Wilstermann, Gaildorf, DE;
Assignee:
Daimler-Benz Aktiengesellschaft, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M / ;
U.S. Cl.
CPC ...
73 3508 ; 731173 ;
Abstract
A method for determining an operating parameter of an internal combustion engine. An ionic current signal curve at a spark plug of the internal combustion engine is measured for a number of ignitions as a function of time. The measured signal curves are then averaged to obtain an averaged signal curve. A maximum and/or the time of the maximum of the averaged signal curve is determined. Based on the maximum of the average signal curve and/or the time of the maximum of the average signal curve, the operating parameter is calculated.