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. 27, 2012
Filed:
Nov. 03, 2009
Niclas Karlsson, Esslingen Am Neckar, DE;
Martin Czasch, Winnenden, DE;
Lars Wonnemann, Higashimatsuyama, JP;
Thomas Lorenz, Weinstadt, DE;
Niclas Karlsson, Esslingen Am Neckar, DE;
Martin Czasch, Winnenden, DE;
Lars Wonnemann, Higashimatsuyama, JP;
Thomas Lorenz, Weinstadt, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A procedure for checking the functionality of a metering valve () of a reducing agent system of a combustion engine, at which the metering device () is advanced from a tank () to the metering valve () with the aid of a controllable pump () at a constant pressure, comprising the metering valve () is impinged with a control variable that characterizes the causing of a status change of the metering valve (), a variable is detected that characterized the flow rate of the pump (), from this variable that characterizes the flow rate the functionality of the metering valve () is assumed.