Patents by Inventor Erik RECHTLICH

Erik RECHTLICH 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 operating an exhaust gas purification system connected to an internal combustion engine of a motor-vehicle comprising an SCR catalyst
    Patent number: 10100696
    Abstract: A method for operating an exhaust gas purification system connected to an internal combustion engine of a motor vehicle is disclosed. The purification system includes an SCR catalyst for catalyzed reaction of nitrogen oxides contained in the exhaust gas of the internal combustion engine with ammonia. The method includes adding a reducing agent containing ammonia to the exhaust gas upstream of the SCR catalyst at a predeterminable dosage rate and determining a pressure value correlating with an absolute pressure in the exhaust gas purification system on the input side of the SCR catalyst. The dosage rate is specified at least as a function of the pressure value.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: October 16, 2018
    Assignee: Daimler AG
    Inventors: Uwe Gaertner, Alexander Massner, Erik Rechtlich, Frank Zimmermann
  • Method for Operating an Exhaust Gas Purification System Connected to an Internal Combustion Engine of a Motor-Vehicle Comprising an SCR Catalyst
    Publication number: 20180171847
    Abstract: A method for operating an exhaust gas purification system connected to an internal combustion engine of a motor vehicle is disclosed. The purification system includes an SCR catalyst for catalyzed reaction of nitrogen oxides contained in the exhaust gas of the internal combustion engine with ammonia. The method includes adding a reducing agent containing ammonia to the exhaust gas upstream of the SCR catalyst at a predeterminable dosage rate and determining a pressure value correlating with an absolute pressure in the exhaust gas purification system on the input side of the SCR catalyst. The dosage rate is specified at least as a function of the pressure value.
    Type: Application
    Filed: February 13, 2015
    Publication date: June 21, 2018
    Applicant: Daimier AG
    Inventors: Uwe GAERTNER, Alexander MASSNER, Erik RECHTLICH, Frank ZIMMERMANN