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. 29, 2013
Filed:
Nov. 02, 2010
Laurent Duval, Nanterre, FR;
Alexandre Pagot, Rueil Malmaison, FR;
Benoist Thirouard, Rueil Malmaison, FR;
Jean-marc Zaccardi, Rueil Malmaison, FR;
Laurent Duval, Nanterre, FR;
Alexandre Pagot, Rueil Malmaison, FR;
Benoist Thirouard, Rueil Malmaison, FR;
Jean-Marc Zaccardi, Rueil Malmaison, FR;
IFP Energies Nouvelles, Cedex, FR;
Abstract
An abnormal combustion detection method is disclosed for spark-ignition internal-combustion engines, from combustion indicators. Combustion indicators, such as CA10 and MIP, are determined which are converted to new indicators having lower dispersions than those of indicators for normal combustions that are not converted. A parameter characterizing a distribution of N values of the new combustion indicators, acquired over N cycles preceding the cycle in progress, is then determined. The start of an abnormal combustion is thereafter detected by comparing this parameter with a threshold, and the course of the abnormal combustion detected in the combustion chamber is controlled.