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).
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Patent number: 10253670Abstract: 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: GrantFiled: October 23, 2014Date of Patent: April 9, 2019Assignees: Eberspächer Exhaust Technology GmbH & Co. KG, Volvo Lastvagnar ABInventors: Marcus Werni, Rainer Lehnen
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Patent number: 9003782Abstract: 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: GrantFiled: November 27, 2013Date of Patent: April 14, 2015Assignees: Eberspächer Exhaust Technology GmbH & Co. KG, Volvo Lastvagnar ABInventors: Marcus Werni, Rainer Lehnen
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Publication number: 20150040525Abstract: 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: ApplicationFiled: October 23, 2014Publication date: February 12, 2015Inventors: Marcus WERNI, Rainer LEHNEN
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Publication number: 20140086802Abstract: 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: ApplicationFiled: November 27, 2013Publication date: March 27, 2014Applicant: J. Eberspächer GmbH & Co. KGInventors: Marcus WERNI, Rainer LEHNEN
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Patent number: 8621853Abstract: 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: GrantFiled: March 25, 2010Date of Patent: January 7, 2014Assignee: Eberspächer Exhaust Technology GmbH & Co. KGInventors: Marcus Werni, Rainer Lehnen
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Patent number: 8596044Abstract: 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: GrantFiled: March 25, 2010Date of Patent: December 3, 2013Assignees: Eberspächer Exhaust Technology GmbH & Co. KG, Volvo Lastvagnar ABInventors: Marcus Werni, Rainer Lehnen, Gert-Ove Wahlström
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Patent number: 8388896Abstract: 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: GrantFiled: September 3, 2009Date of Patent: March 5, 2013Assignee: J. Eberspaecher GmbH & Co. KGInventors: Rainer Lehnen, Rudolf Buhmann, Kresimir Jambrosic
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Patent number: 8322134Abstract: 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: GrantFiled: December 17, 2008Date of Patent: December 4, 2012Assignee: J. Eberspaecher GmbH & Co. KGInventors: Arthur Wieland, Michael Krause, Rainer Lehnen, Georg Wirth
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Patent number: 8220253Abstract: 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: GrantFiled: May 18, 2007Date of Patent: July 17, 2012Assignee: J. Eberspaecher GmbH & Co., KGInventors: Marcus Werni, Siegfried Woerner, Rudolf Buhmann, Rainer Lehnen
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Patent number: 7866143Abstract: 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: GrantFiled: January 13, 2006Date of Patent: January 11, 2011Assignee: J. Eberspaecher GmbH & Co. KGInventors: Rudolf Buhmann, Rainer Lehnen, Arthur Wieland
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Patent number: 7836688Abstract: 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: GrantFiled: May 24, 2006Date of Patent: November 23, 2010Assignee: J. Eberspaecher GmbH & Co. KGInventors: Siegfried Woerner, Rudolf Buhmann, Rainer Lehnen
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Publication number: 20100242450Abstract: 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: ApplicationFiled: March 25, 2010Publication date: September 30, 2010Inventors: Marcus WERNI, Rainer Lehnen
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Publication number: 20100242451Abstract: 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: ApplicationFiled: March 25, 2010Publication date: September 30, 2010Inventors: Marcus WERNI, Rainer LEHNEN
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Publication number: 20100061898Abstract: 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: ApplicationFiled: September 3, 2009Publication date: March 11, 2010Applicant: J. Eberspaecher GmbH & Co. KGInventors: Rainer Lehnen, Rudolf Buhmann, Kresimir Jambrosic
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Publication number: 20090158721Abstract: 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: ApplicationFiled: December 17, 2008Publication date: June 25, 2009Applicant: J. Eberspaecher GmbH & Co. KGInventors: Arthur Wieland, Michael Krause, Rainer Lehnen, Georg Wirth
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Publication number: 20070289294Abstract: 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: ApplicationFiled: May 18, 2007Publication date: December 20, 2007Inventors: Marcus Werni, Siegfried Woerner, Rudolf Buhmann, Rainer Lehnen
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Publication number: 20060266022Abstract: 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: ApplicationFiled: May 24, 2006Publication date: November 30, 2006Inventors: Siegfried Woerner, Rudolf Buhmann, Rainer Lehnen
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Publication number: 20060156712Abstract: 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: ApplicationFiled: January 13, 2006Publication date: July 20, 2006Inventors: Rudolf Buhmann, Rainer Lehnen, Arthur Wieland