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. 12, 2004
Filed:
Sep. 05, 2002
Klaus Joos, Walheim, DE;
Jens Wolber, Gerlingen, DE;
Thomas Frenz, Noerdlingen, DE;
Hansjoerg Bochum, Novi, MI (US);
Matthias Kuesell, Leonberg, DE;
Markus Amler, Leonberg-Gebersheim, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a method and an arrangement for calibrating a pressure sensor ( ) of a fuel-metering system of an internal combustion engine wherein the fuel-metering system includes: a high-pressure pump ( ) for pumping fuel from a low-pressure region (ND) into a high-pressure region (HD) injectors ( ) for metering the fuel from the high-pressure region (HD) into combustion chambers ( ) of the internal combustion engine with the injectors ( ) being drivable in dependence upon operating characteristic variables, and the pressure sensor ( ) for measuring the pressure in the high-pressure region (HD). To calibrate the pressure sensor ( ) so that the offset error is minimized, it is suggested that a pressure, which is present in the high-pressure region (HD), is applied as a reference pressure; that the pressure, which is present in the high-pressure region (HD), is measured as the sensor pressure by the pressure sensor ( ); and, that the characteristic line of the pressure sensor ( ) is so corrected that the difference of reference pressure and sensor pressure is minimized.