Patents by Inventor Lars Wonnemann

Lars Wonnemann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Procedure for checking the functionality of a metering valve of a NOx-reduction system of a combustion engine
    Patent number: 8145408
    Abstract: A procedure for checking the functionality of a metering valve (310) of a reducing agent system of a combustion engine, at which the metering device (105) is advanced from a tank (100) to the metering valve (310) with the aid of a controllable pump (12) at a constant pressure, comprising the metering valve (310) is impinged with a control variable that characterizes the causing of a status change of the metering valve (310), a variable is detected that characterized the flow rate of the pump (120), from this variable that characterizes the flow rate the functionality of the metering valve (310) is assumed.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: March 27, 2012
    Assignee: Robert Bosch GmbH
    Inventors: Niclas Karlsson, Martin Czasch, Lars Wonnemann, Thomas Lorenz
  • PROCEDURE FOR CHECKING THE FUNCTIONALITY OF A METERING VALVE OF A NOx-REDUCTION SYSTEM OF A COMBUSTION ENGINE
    Publication number: 20100114455
    Abstract: A procedure for checking the functionality of a metering valve (310) of a reducing agent system of a combustion engine, at which the metering device (105) is advanced from a tank (100) to the metering valve (310) with the aid of a controllable pump (12) at a constant pressure, comprising the metering valve (310) is impinged with a control variable that characterizes the causing of a status change of the metering valve (310), a variable is detected that characterized the flow rate of the pump (120), from this variable that characterizes the flow rate the functionality of the metering valve (310) is assumed.
    Type: Application
    Filed: November 3, 2009
    Publication date: May 6, 2010
    Applicant: Robert Bosch GMBH
    Inventors: Niclas Karlsson, Martin Czasch, Lars Wonnemann, Thomas Lorenz