Patents by Inventor Marcus Werni

Marcus Werni 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).

  • Patent number: 7127884
    Abstract: A muffler has an integrated SCR catalytic converter for an exhaust line of an internal combustion engine, in particular in a motor vehicle The muffler includes a housing which has an intake trumpet on the intake end and an exhaust pipe on the output end. Catalytic converter elements are arranged in the housing with one inlet end in an inlet chamber and with an outlet end in an outlet chamber. An outlet end of the intake trumpet communicates with the inlet chamber. To improve the efficiency of the SCR catalytic converter the inlet chamber is sealed off from the outside and with respect to the intake trumpet and the catalytic converter elements to the extent that in operation of the internal combustion engine with exhaust gas loaded with urea, passing through the intake trumpet into the inlet chamber, the exhaust gas leaves the inlet chamber only through the catalytic converter elements.
    Type: Grant
    Filed: November 24, 2004
    Date of Patent: October 31, 2006
    Assignee: J. Eberspächer GmbH & Co. KG
    Inventors: Siegfried Wörner, Rudolf Buhmann, Marcus Werni
  • Publication number: 20050115229
    Abstract: The present invention relates to a muffler (1) having an integrated SCR catalytic converter (9) for an exhaust line of an internal combustion engine, in particular in a motor vehicle, having a housing (2) which has an intake trumpet (6) on the intake end and an exhaust pipe (7) on the output end. Catalytic converter elements (10) are arranged in the housing (2) with one inlet end (12) in an inlet chamber (11) and with an outlet end (14) in an outlet chamber (15). An outlet end (23) of the intake trumpet communicates with the inlet chamber (11). To improve the efficiency of the SCR catalytic converter (9) the inlet chamber (11) is sealed off from the outside and with respect to the intake trumpet (6) and the catalytic converter elements (10) to the extent that in operation of the internal combustion engine with exhaust gas loaded with urea, passing through the intake trumpet (6) into the inlet chamber (11), the exhaust gas leaves the inlet chamber only through the catalytic converter elements (10).
    Type: Application
    Filed: November 24, 2004
    Publication date: June 2, 2005
    Inventors: Siegfried Worner, Rudolf Buhmann, Marcus Werni
  • Patent number: 6729127
    Abstract: An exhaust cleaning system for motor vehicles, especially a diesel exhaust cleaning system for medium to heavy utility vehicles. The exhaust cleaning system has an exhaust muffler (1), a catalytic converter (2) and an exhaust particle filter element (3). The exhaust muffler (1), the catalytic converter (2) with a U-shaped tubular urea injection element (4) arranged upstream and an exhaust particle filter element (3) are integrated in a common housing and designed as a structural, functional unit.
    Type: Grant
    Filed: August 15, 2001
    Date of Patent: May 4, 2004
    Assignee: J. Eberspächer GmbH & Co. KG
    Inventors: Siegfried Woerner, Peter Zacke, Thomas Hauber, Rudolf Buhmann, Marcus Werni
  • Publication number: 20030221424
    Abstract: An exhaust cleaning system for motor vehicles, especially a diesel exhaust cleaning system for medium to heavy utility vehicles. The exhaust cleaning system has an exhaust muffler (1), a catalytic converter (2) and an exhaust particle filter element (3). The exhaust muffler (1), the catalytic converter (2) with a U-shaped tubular urea injection element (4) arranged upstream and an exhaust particle filter element (3) are integrated in a common housing and designed as a structural, functional unit.
    Type: Application
    Filed: June 18, 2003
    Publication date: December 4, 2003
    Applicant: J. Eberspacher GmbH & Co.
    Inventors: Siegfried Woerner, Peter Zacke, Thomas Hauber, Rudolf Buhmann, Marcus Werni
  • Publication number: 20020023435
    Abstract: An exhaust cleaning system for motor vehicles, especially a diesel exhaust cleaning system for medium to heavy utility vehicles. The exhaust cleaning system has an exhaust muffler (1), a catalytic converter (2) and an exhaust particle filter element (3). The exhaust muffler (1), the catalytic converter (2) with a U-shaped tubular urea injection element (4) arranged upstream and an exhaust particle filter element (3) are integrated in a common housing and designed as a structural, functional unit.
    Type: Application
    Filed: August 15, 2001
    Publication date: February 28, 2002
    Inventors: Siegfried Woerner, Peter Zacke, Thomas Hauber, Rudolf Buhmann, Marcus Werni