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. 17, 2006
Filed:
Nov. 22, 2004
Claire Vermonet, Paris, FR;
Guillaume Meissonnier, Lanes le Gaulois, FR;
Cédric Lorret, Paris, FR;
Jean-marie Vespasien, La Garenne Colombes, FR;
Claire Vermonet, Paris, FR;
Guillaume Meissonnier, Lanes le Gaulois, FR;
Cédric Lorret, Paris, FR;
Jean-Marie Vespasien, La Garenne Colombes, FR;
Peugeot Citroen Automobiles SA, Velizy-Villacoublay, FR;
Delphi Technologies, Inc., Troy, MI (US);
Abstract
The invention relates to a system for calibrating apparatus () for acquiring the pressure in a cylinder () of a motor vehicle diesel engine, of the type comprising a cylinder pressure sensor () associated with the cylinder and means () for conditioning the signal delivered by the sensor () as a function of conditioning parameters. The calibration system comprises means () for collecting a signal delivered by the cylinder pressure sensor (), an information processing unit () adapted to determine the values of the conditioning parameters as a function of a polytropic thermodynamic model of the evolution of the pressure in the cylinder, a reference pressure of the pure compression phase of the cycle of the cylinder, and the signal delivered by the pressure sensor () and collected by the collecting means (), and means () for modifying the values of the conditioning parameters in the acquisition apparatus () as a function of the values of the conditioning parameters determined by the information processing unit ().