Patents by Inventor Rainer Lehnen

Rainer Lehnen 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: 10253670
    Abstract: An exhaust gas-treating device (1) for an exhaust system of an internal combustion engine, especially of a motor vehicle, has a housing (2), which has a jacket (3) extending circumferentially on the side and two end-side end bottoms (4, 5). Maintenance is simplified with at least one mounting tube (6), which passes through one or the first end bottom (4) and into the outlet end (8) of which a particle filter (7) is plugged axially from the outside, with a deflecting housing (9). The deflecting housing (9) contains a deflecting chamber (10), and has at least one inlet (11) communicating with the deflecting chamber (10) and at least one outlet (12) communicating with the deflecting chamber (10). A fastening device (13) is provided for detachably fastening the respective inlet (11) at the respective outlet end (8) of the mounting tube (6).
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: April 9, 2019
    Assignees: Eberspächer Exhaust Technology GmbH & Co. KG, Volvo Lastvagnar AB
    Inventors: Marcus Werni, Rainer Lehnen
  • Patent number: 9003782
    Abstract: An exhaust gas-treating device (1) for an exhaust system of an internal combustion engine, especially of a motor vehicle, has a housing (2), which has a jacket (3) extending circumferentially on the side and two end-side end bottoms (4, 5). Maintenance is simplified with at least one mounting tube (6), which passes through one or the first end bottom (4) and into the outlet end (8) of which a particle filter (7) is plugged axially from the outside, with a deflecting housing (9). The deflecting housing (9) contains a deflecting chamber (10), and has at least one inlet (11) communicating with the deflecting chamber (10) and at least one outlet (12) communicating with the deflecting chamber (10). A fastening device (13) is provided for detachably fastening the respective inlet (11) at the respective outlet end (8) of the mounting tube (6).
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: April 14, 2015
    Assignees: Eberspächer Exhaust Technology GmbH & Co. KG, Volvo Lastvagnar AB
    Inventors: Marcus Werni, Rainer Lehnen
  • Publication number: 20150040525
    Abstract: An exhaust gas-treating device (1) for an exhaust system of an internal combustion engine, especially of a motor vehicle, has a housing (2), which has a jacket (3) extending circumferentially on the side and two end-side end bottoms (4, 5). Maintenance is simplified with at least one mounting tube (6), which passes through one or the first end bottom (4) and into the outlet end (8) of which a particle filter (7) is plugged axially from the outside, with a deflecting housing (9). The deflecting housing (9) contains a deflecting chamber (10), and has at least one inlet (11) communicating with the deflecting chamber (10) and at least one outlet (12) communicating with the deflecting chamber (10). A fastening device (13) is provided for detachably fastening the respective inlet (11) at the respective outlet end (8) of the mounting tube (6).
    Type: Application
    Filed: October 23, 2014
    Publication date: February 12, 2015
    Inventors: Marcus WERNI, Rainer LEHNEN
  • Publication number: 20140086802
    Abstract: An exhaust gas-treating device (1) for an exhaust system of an internal combustion engine, especially of a motor vehicle, has a housing (2), which has a jacket (3) extending circumferentially on the side and two end-side end bottoms (4, 5). Maintenance is simplified with at least one mounting tube (6), which passes through one or the first end bottom (4) and into the outlet end (8) of which a particle filter (7) is plugged axially from the outside, with a deflecting housing (9). The deflecting housing (9) contains a deflecting chamber (10), and has at least one inlet (11) communicating with the deflecting chamber (10) and at least one outlet (12) communicating with the deflecting chamber (10). A fastening device (13) is provided for detachably fastening the respective inlet (11) at the respective outlet end (8) of the mounting tube (6).
    Type: Application
    Filed: November 27, 2013
    Publication date: March 27, 2014
    Applicant: J. Eberspächer GmbH & Co. KG
    Inventors: Marcus WERNI, Rainer LEHNEN
  • Patent number: 8621853
    Abstract: An exhaust gas-treating device (1) for an exhaust system of an internal combustion engine, especially of a motor vehicle, has a housing (2), which has a jacket (3) extending circumferentially on the side and two end-side end bottoms (4, 5). Maintenance is simplified with at least one mounting tube (6), which passes through one or the first end bottom (4) and into the outlet end (8) of which a particle filter (7) is plugged axially from the outside, with a deflecting housing (9). The deflecting housing (9) contains a deflecting chamber (10), and has at least one inlet (11) communicating with the deflecting chamber (10) and at least one outlet (12) communicating with the deflecting chamber (10). A fastening device (13) is provided for detachably fastening the respective inlet (11) at the respective outlet end (8) of the mounting tube (6).
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: January 7, 2014
    Assignee: Eberspächer Exhaust Technology GmbH & Co. KG
    Inventors: Marcus Werni, Rainer Lehnen
  • Patent number: 8596044
    Abstract: An exhaust gas-treating device (1) for an exhaust system of an internal combustion engine, especially of a motor vehicle, is provided with a housing (2), which has a jacket (3) extending circumferentially on the side and at least one bottom (4). The homogenization of the exhaust gas flow is improved with a mixing housing (14), which is arranged in the interior space (23) of the housing (2) and which has a mixing chamber (15). An inlet (16) of the mixing housing passes through the bottom (4) and communicates with the mixing chamber (15). An outlet (17) of the mixing housing passes through the bottom (4) and communicates with the mixing chamber (15).
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: December 3, 2013
    Assignees: Eberspächer Exhaust Technology GmbH & Co. KG, Volvo Lastvagnar AB
    Inventors: Marcus Werni, Rainer Lehnen, Gert-Ove Wahlström
  • Patent number: 8388896
    Abstract: Provided is an exhaust gas retreatment device for an exhaust system of an internal combustion engine including a housing, in which an exhaust gas retreatment element and upstream thereof a silencer device are arranged, an inlet gas path leading from one housing inlet to an outlet of the exhaust gas retreatment element located in the interior of the housing, with an exhaust gas path following the inlet gas path which in the interior of the housing leads to the silencer device and/or through the silencer device as well as to a housing outlet. A cost-effective design can be achieved if the inlet gas path has a higher gas tightness than the exhaust gas path and/or if components of the exhaust gas retreatment device limiting the inlet gas path have a higher material quality than components of the exhaust gas retreatment device only limiting the exhaust gas path.
    Type: Grant
    Filed: September 3, 2009
    Date of Patent: March 5, 2013
    Assignee: J. Eberspaecher GmbH & Co. KG
    Inventors: Rainer Lehnen, Rudolf Buhmann, Kresimir Jambrosic
  • Patent number: 8322134
    Abstract: The present invention relates to a sliding fit for the axially movable bearing of a thermally loaded pipe on a component, in particular on an exhaust system of an internal combustion engine, having a wire mesh which is radially supported on the outside of the pipe and is secured directly or indirectly to the component.
    Type: Grant
    Filed: December 17, 2008
    Date of Patent: December 4, 2012
    Assignee: J. Eberspaecher GmbH & Co. KG
    Inventors: Arthur Wieland, Michael Krause, Rainer Lehnen, Georg Wirth
  • Patent number: 8220253
    Abstract: The invention relates to an exhaust gas after-treatment device for an internal combustion engine, including a housing into which an exhaust pipe that opens into a mixing chamber penetrates. The mixing chamber is shaped as a pot and reverses a direction of flow of the incoming exhaust gas whereby it returns the exhaust gas radially outside of the exhaust pipe. An open end of the pot-shaped mixing chamber opens into a collecting space which is designed so that it supplies the exhaust gas to at least one downstream SCR catalytic converter.
    Type: Grant
    Filed: May 18, 2007
    Date of Patent: July 17, 2012
    Assignee: J. Eberspaecher GmbH & Co., KG
    Inventors: Marcus Werni, Siegfried Woerner, Rudolf Buhmann, Rainer Lehnen
  • Patent number: 7866143
    Abstract: An exhaust gas treatment system for an exhaust system of an internal combustion engine includes a basic housing and an add-on housing mounted thereon so it is at least partially detachable. The basic housing contains at least one inlet pipe which can be connected to the exhaust system and leads into the basic housing, at least one outlet pipe which can be connected to the exhaust system and leads out of the basic housing, at least one SCR catalyst and at least one oxidizing catalytic converter. The add-on housing contains at least one particle separation device and at least one reducing agent feed mechanism.
    Type: Grant
    Filed: January 13, 2006
    Date of Patent: January 11, 2011
    Assignee: J. Eberspaecher GmbH & Co. KG
    Inventors: Rudolf Buhmann, Rainer Lehnen, Arthur Wieland
  • Patent number: 7836688
    Abstract: The present invention relates to an exhaust system for an internal combustion engine, in particular in a motor vehicle, having an SCR module containing at least one SCR catalyst element in an SCR housing connected to an exhaust line and having a PF module containing at least one particulate filter element in a PF housing connected to the exhaust line upstream from the SCR housing.
    Type: Grant
    Filed: May 24, 2006
    Date of Patent: November 23, 2010
    Assignee: J. Eberspaecher GmbH & Co. KG
    Inventors: Siegfried Woerner, Rudolf Buhmann, Rainer Lehnen
  • Publication number: 20100242450
    Abstract: An exhaust gas-treating device (1) for an exhaust system of an internal combustion engine, especially of a motor vehicle, has a housing (2), which has a jacket (3) extending circumferentially on the side and two end-side end bottoms (4, 5). Maintenance is simplified with at least one mounting tube (6), which passes through one or the first end bottom (4) and into the outlet end (8) of which a particle filter (7) is plugged axially from the outside, with a deflecting housing (9). The deflecting housing (9) contains a deflecting chamber (10), and has at least one inlet (11) communicating with the deflecting chamber (10) and at least one outlet (12) communicating with the deflecting chamber (10). A fastening device (13) is provided for detachably fastening the respective inlet (11) at the respective outlet end (8) of the mounting tube (6).
    Type: Application
    Filed: March 25, 2010
    Publication date: September 30, 2010
    Inventors: Marcus WERNI, Rainer Lehnen
  • Publication number: 20100242451
    Abstract: An exhaust gas-treating device (1) for an exhaust system of an internal combustion engine, especially of a motor vehicle, is provided with a housing (2), which has a jacket (3) extending circumferentially on the side and at least one bottom (4). The homogenization of the exhaust gas flow is improved with a mixing housing (14), which is arranged in the interior space (23) of the housing (2) and which has a mixing chamber (15). An inlet (16) of the mixing housing passes through the bottom (4) and communicates with the mixing chamber (15). An outlet (17) of the mixing housing passes through the bottom (4) and communicates with the mixing chamber (15).
    Type: Application
    Filed: March 25, 2010
    Publication date: September 30, 2010
    Inventors: Marcus WERNI, Rainer LEHNEN
  • Publication number: 20100061898
    Abstract: Provided is an exhaust gas retreatment device for an exhaust system of an internal combustion engine including a housing, in which an exhaust gas retreatment element and upstream thereof a silencer device are arranged, an inlet gas path leading from one housing inlet to an outlet of the exhaust gas retreatment element located in the interior of the housing, with an exhaust gas path following the inlet gas path which in the interior of the housing leads to the silencer device and/or through the silencer device as well as to a housing outlet. A cost-effective design can be achieved if the inlet gas path has a higher gas tightness than the exhaust gas path and/or if components of the exhaust gas retreatment device limiting the inlet gas path have a higher material quality than components of the exhaust gas retreatment device only limiting the exhaust gas path.
    Type: Application
    Filed: September 3, 2009
    Publication date: March 11, 2010
    Applicant: J. Eberspaecher GmbH & Co. KG
    Inventors: Rainer Lehnen, Rudolf Buhmann, Kresimir Jambrosic
  • Publication number: 20090158721
    Abstract: The present invention relates to a sliding fit for the axially movable bearing of a thermally loaded pipe on a component, in particular on an exhaust system of an internal combustion engine, having a wire mesh which is radially supported on the outside of the pipe and is secured directly or indirectly to the component.
    Type: Application
    Filed: December 17, 2008
    Publication date: June 25, 2009
    Applicant: J. Eberspaecher GmbH & Co. KG
    Inventors: Arthur Wieland, Michael Krause, Rainer Lehnen, Georg Wirth
  • Publication number: 20070289294
    Abstract: The invention relates to an exhaust gas after-treatment device for an internal combustion engine, including a housing into which an exhaust pipe that opens into a mixing chamber penetrates. The mixing chamber is shaped as a pot and reverses a direction of flow of the incoming exhaust gas whereby it returns the exhaust gas radially outside of the exhaust pipe. An open end of the pot-shaped mixing chamber opens into a collecting space which is designed so that it supplies the exhaust gas to at least one downstream SCR catalytic converter.
    Type: Application
    Filed: May 18, 2007
    Publication date: December 20, 2007
    Inventors: Marcus Werni, Siegfried Woerner, Rudolf Buhmann, Rainer Lehnen
  • Publication number: 20060266022
    Abstract: The present invention relates to an exhaust system for an internal combustion engine, in particular in a motor vehicle, having an SCR module containing at least one SCR catalyst element in an SCR housing connected to an exhaust line and having a PF module containing at least one particulate filter element in a PF housing connected to the exhaust line upstream from the SCR housing.
    Type: Application
    Filed: May 24, 2006
    Publication date: November 30, 2006
    Inventors: Siegfried Woerner, Rudolf Buhmann, Rainer Lehnen
  • Publication number: 20060156712
    Abstract: The present invention relates to an exhaust gas treatment system for an exhaust system of an internal combustion engine, and comprises a basic housing and an add-on housing mounted thereon so it is at least partially detachable. The basic housing contains at least one inlet pipe which can be connected to the exhaust system and leads into the basic housing, at least one outlet pipe which can be connected to the exhaust system and leads out of the basic housing, at least one SCR catalyst and at least one oxidizing catalytic converter. The add-on housing contains at least one particle separation device and at least one reducing agent feed mechanism.
    Type: Application
    Filed: January 13, 2006
    Publication date: July 20, 2006
    Inventors: Rudolf Buhmann, Rainer Lehnen, Arthur Wieland