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:
Mar. 25, 2003
Filed:
Mar. 05, 2001
Klaus Joos, Walheim, DE;
Mathias Rollwage, Ditzingen, DE;
Karsten Kroepke, Ludwigsburg, DE;
Jens Wolber, Gerlingen, DE;
Thomas Frenz, Noerdlingen, DE;
Manfred Kirschner, Stuttgart, DE;
Klaus-Dieter Hufnagel, Moeglingen, DE;
Ingo Richter, Markgroeningen, DE;
Markus Amler, Leonberg-Gebersheim, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method and a device are described for diagnosing a fuel system having a plurality of electric fuel delivery units, which are submerged on the inlet side in a fuel supply contained in a fuel tank, and which, on the outlet side, deliver fuel in a fuel line to an internal combustion engine. The currents of the electric fuel delivery units are measured directly or indirectly in an analysis unit, compared to one another, and a diagnostic signal in digitized form is generated as a function of the result of the comparison.