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. 22, 2013
Filed:
Jan. 09, 2008
Applicants:
Lionel Cordesses, Bretonneux, FR;
Marco Marsilia, Billancourt, FR;
Marcos Navarro, Paris, FR;
Inventors:
Assignee:
Renault S.A.S., Boulogne Billancourt, FR;
Primary Examiner:
Int. Cl.
CPC ...
G01L 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method, and corresponding device, for processing a pressure signal from a pressure sensor mounted in a combustion chamber to detect a combustion in an internal combustion engine. The method provides a pressure signal; filters the pressure signal with a filtration mechanism having a variable gain; generates an output signal representative of the filtered pressure signal; generates a signal representative of the error between the pressure signal and the output signal; and determines if the combustion has occurred during an expansion phase of the thermodynamic cycle.