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:
Nov. 15, 2016
Filed:
Oct. 27, 2010
Thomas Rieger, Wettstetten, DE;
Peter Kaeufler, Boehmfeld, DE;
Thomas Rieger, Wettstetten, DE;
Peter Kaeufler, Boehmfeld, DE;
AUDI AG, Ingolstadt, DE;
Abstract
The invention relates to a method for operating a drive unit, wherein the drive unit has an internal combustion engine, which is provided with at least one fuel pump, which is controlled and/or regulated by a pump control unit and which is intended for introducing fuel into a pressure accumulator; a metering system for introducing fuel, which has been metered by means of a lambda function unit, from the pressure accumulator into the internal combustion engine; and a pressure sensor for determining the pressure in the pressure accumulator; and wherein the output variables of the pump control unit and the lambda function unit are evaluated in order to determine a malfunction of the internal combustion engine. In this case, it is provided that additionally the pressure sensor is subjected to at least a defined test pressure for at least a short period of time and that the pressure that is measured with the pressure sensor is compared with the defined test pressure, in order to determine or rule out a malfunction of the pressure sensor. Furthermore, the invention relates to a drive unit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile