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:
Sep. 05, 2006
Filed:
Feb. 25, 2003
Applicants:
Stephane Bourret, Corbreuse, FR;
Laurent Leprieur, Limours, FR;
Olivier Meurisse, Antony, FR;
Inventors:
Assignee:
Renault S.A.S., Boulogne Billancourt, FR;
Primary Examiner:
Int. Cl.
CPC ...
F02B 47/08 (2006.01); F02B 47/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for diagnosing the operating condition of an internal combustion engine exhaust gas recycling valve. The method acquires a measurement value of a reference position of the recycling valve at a predetermined time corresponding to a normally closed position of the valve, calculates the difference between the acquired reference value and a reference value acquired during a diagnostic cycle previously carried out, and compares the calculated difference with a threshold value for detecting opening of the valve.