Patents by Inventor Rüdiger Mandt

Rüdiger Mandt 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).

  • Method for determining the charge state of a particle filter installed in the exhaust gas line of an internal combustion engine and device for reducing the particle emissions of an internal combustion engine
    Patent number: 8152912
    Abstract: A method for determining the charge state of a particle filter installed in the exhaust gas line of an internal combustion engine comprises the following steps: determining the exhaust gas volumetric flow in the flow direction of the exhaust gas downstream of the particle filter (2), detecting the pressure present in the exhaust gas line (1) in the direction of flow of the exhaust gas prior to the particle filter (2), comparing the exhaust gas volumetric flow determined hinter the particle filter (2) with the detected pressure present upstream of the particle filter (2) and evaluating the results of the comparison with consideration to the exhaust gas back pressure of the uncharged particle filter (2) and the exhaust gas back pressure caused by the particle filter charge, said pressure being higher than the uncharged filter. Further described is a corresponding device for reducing the particle emissions of an internal combustion engine.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: April 10, 2012
    Assignee: HJS Emission Technology GmbH & Co. KG
    Inventors: Klaus Schrewe, Rüdiger Mandt
  • Method for Determining the Charge State of a Particle Filter Installed in the Exhaust Gas Line of an Internal Combustion Engine and Device for Reducing the Particle Emissions of an Internal Combustion Engine
    Publication number: 20110036070
    Abstract: A method for determining the charge state of a particle filter installed in the exhaust gas line of an internal combustion engine comprises the following steps: determining the exhaust gas volumetric flow in the flow direction of the exhaust gas downstream of the particle filter (2), detecting the pressure present in the exhaust gas line (1) in the direction of flow of the exhaust gas prior to the particle filter (2), comparing the exhaust gas volumetric flow determined hinter the particle filter (2) with the detected pressure present upstream of the particle filter (2) and evaluating the results of the comparison with consideration to the exhaust gas back pressure of the uncharged particle filter (2) and the exhaust gas back pressure caused by the particle filter charge, said pressure being higher than the uncharged filter. Further described is a corresponding device for reducing the particle emissions of an internal combustion engine.
    Type: Application
    Filed: March 6, 2009
    Publication date: February 17, 2011
    Applicant: HJS FAHRZEUGTECHNIK GMBH & CO KG
    Inventors: Klaus Schrewe, Rüdiger Mandt