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:
Dec. 16, 2008
Filed:
Aug. 28, 2007
Applicants:
Stéphan Ker, Chatou, FR;
Laurent Duval, Nanterre, FR;
Inventors:
Stéphan Ker, Chatou, FR;
Laurent Duval, Nanterre, FR;
Assignee:
IFP, Rueil Malmaison Cedex, FR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02D 28/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of real-time estimation of indicators of the engine combustion state from signals containing oscillating components. A signal, such as a vibration signal for example, correlated with the engine combustion, is acquired as a function of time or of the crank angle. Real-time filtering and time-frequency analysis of this signal is carried out and indicators of the combustion state are estimated in real time from this analysis. The method has application for combustion control of an internal-combustion engine.