Patents by Inventor Christian Goerigk
Christian Goerigk 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: 7765797Abstract: An exhaust gas purification system for a motor vehicle having a reducing agent storage tank, and an associated operating method. In particular, an exhaust gas purification system for a motor vehicle, for which predetermined maintenance intervals is provided. The system includes a reducing agent storage tank for storing a reducing agent intended for exhaust gas purification. A method for operating a motor vehicle having an exhaust gas purification system and a reducing agent storage tank for storing a reducing agent intended for the exhaust gas purification, which comprises predetermined maintenance work after predetermined maintenance intervals is also provided.Type: GrantFiled: November 27, 2004Date of Patent: August 3, 2010Assignee: Daimler AGInventors: Frank Duvinage, Christian Goerigk, Berthold Keppeler, Arno Nolte, Markus Paule, Joachim Schommers
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Patent number: 7550125Abstract: An exhaust-gas purification unit for purifying the exhaust gas from an internal combustion engine which is preferably operated in lean-burn mode, in particular a diesel engine used in motor vehicles, has a particulate filter and a SCR catalytic converter arranged in the exhaust pipe in succession in the direction of flow, and a reducing-agent supply. Ammonia can be added to the exhaust gas from the internal combustion engine on the entry side of the SCR catalytic converter by the reducing-agent supply. The exhaust-gas purification unit includes a hydrogen-generating unit for enriching the exhaust gas from the internal combustion engine with the hydrogen which it generates.Type: GrantFiled: April 21, 2008Date of Patent: June 23, 2009Assignee: Daimler AGInventors: Frank Duvinage, Christian Goerigk, Arno Nolte, Markus Paule, Henning Sander
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Publication number: 20080256932Abstract: An exhaust-gas purification unit for purifying the exhaust gas from an internal combustion engine which is preferably operated in lean-burn mode, in particular a diesel engine used in motor vehicles, has a particulate filter and a SCR catalytic converter arranged in the exhaust pipe in succession in the direction of flow, and a reducing-agent supply. Ammonia can be added to the exhaust gas from the internal combustion engine on the entry side of the SCR catalytic converter by the reducing-agent supply. The exhaust-gas purification unit includes a hydrogen-generating unit for enriching the exhaust gas from the internal combustion engine with the hydrogen which it generates.Type: ApplicationFiled: April 21, 2008Publication date: October 23, 2008Applicant: Daimler AGInventors: Frank Duvinage, Christian Goerigk, Arno Nolte, Markus Paule, Henning Sander
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Patent number: 7361320Abstract: The invention proposes an exhaust-gas purification unit for purifying the exhaust gas from an internal combustion engine which is preferably operated in lean-burn mode, in particular a diesel engine used in motor vehicles, in which a particulate filter and a SCR catalytic converter are arranged in the exhaust pipe in succession in the direction of flow, and having a reducing-agent supply, it being possible for ammonia to be added to the exhaust gas from the internal combustion engine on the entry side of the SCR catalytic converter by the reducing-agent supply. According to the invention, the exhaust-gas purification unit includes a hydrogen-generating unit for enriching the exhaust gas from the internal combustion engine with the hydrogen which it generates. Use in motor vehicles.Type: GrantFiled: August 13, 2007Date of Patent: April 22, 2008Assignee: DaimlerChrysler AGInventors: Frank Duvinage, Christian Goerigk, Arno Nolte, Markus Paule, Henning Sander
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Publication number: 20070277502Abstract: An exhaust gas purification system for a motor vehicle having a reducing agent storage tank, and an associated operating method. In particular, an exhaust gas purification system for a motor vehicle, for which predetermined maintenance intervals is provided. The system includes a reducing agent storage tank for storing a reducing agent intended for exhaust gas purification. A method for operating a motor vehicle having an exhaust gas purification system and a reducing agent storage tank for storing a reducing agent intended for the exhaust gas purification, which comprises predetermined maintenance work after predetermined maintenance intervals is also provided.Type: ApplicationFiled: November 27, 2004Publication date: December 6, 2007Applicant: DaimlerChrysler AGInventors: Frank Duvinage, Christian Goerigk, Berthold Keppeler, Arno Nolte, Markus Paule, Joachim Schommers
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Publication number: 20070274892Abstract: The invention proposes an exhaust-gas purification unit for purifying the exhaust gas from an internal combustion engine which is preferably operated in lean-burn mode, in particular a diesel engine used in motor vehicles, in which a particulate filter and a SCR catalytic converter are arranged in the exhaust pipe in succession in the direction of flow, and having a reducing-agent supply, it being possible for ammonia to be added to the exhaust gas from the internal combustion engine on the entry side of the SCR catalytic converter by the reducing-agent supply. According to the invention, the exhaust-gas purification unit includes a hydrogen-generating unit for enriching the exhaust gas from the internal combustion engine with the hydrogen which it generates. Use in motor vehicles.Type: ApplicationFiled: August 13, 2007Publication date: November 29, 2007Applicant: DAIMLERCHRYSLER AGInventors: Frank DUVINAGE, Christian GOERIGK, Arno NOLTE, Markus PAULE, Henning SANDER
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Patent number: 7254939Abstract: An exhaust gas purification unit for purifying the exhaust gas from an internal combustion engine which is preferably operated in lean burn mode, in particular a diesel engine used in motor vehicles, has a particulate filter and a SCR catalytic converter arranged in the exhaust pipe in succession in the direction of flow, and a reducing agent supply. Ammonia can be added to the exhaust gas from the internal combustion engine on the entry side of the SCR catalytic converter by the reducing agent supply. A hydrogen-generating unit enriches the exhaust gas from the internal combustion engine with generated hydrogen.Type: GrantFiled: April 11, 2002Date of Patent: August 14, 2007Assignee: DaimlerChrysler AGInventors: Frank Duvinage, Christian Goerigk, Arno Nolte, Markus Paule, Henning Sander
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Internal combustion engine comprising a reducing agent production unit and operating method therefor
Publication number: 20060101809Abstract: An internal combustion engine with a reducing agent-generating unit for generation of an H2-containing and/or NH3-containing reducing gas, which can be added to an exhaust gas line upstream from an NOx reducing catalytic converter, and a procedure for the operation of such an internal combustion engine are proposed. The reducing agent-generating unit has an NOx generation step and an H2 generation step in serial arrangement. NH3 is formed at least temporarily by chemical reaction by the reducing agent-generating unit from NOx produced in the NOx generation step. The invention is applicable in motor vehicles, especially in passenger vehicles with Diesel engines.Type: ApplicationFiled: July 30, 2003Publication date: May 18, 2006Inventors: Thilo-Ralf Bodo, Bernd Christner, Frank Duvinage, Christian Goerigk, Harald Menke, Sigfried Mueller-Lunz, Arno Nolte, Markus Paule -
Patent number: 6969492Abstract: An exhaust-gas cleaning system includes a nitrogen oxide reduction catalytic converter for reducing nitrogen oxides which are contained in the exhaust gas. A reducing agent is introduced into the exhaust-gas flow and is in the form of a vapor. A reducing-agent metering device for the metered addition of the reducing agent or a reducing-agent precursor to the exhaust-gas flow includes a vaporizer, which is arranged in the exhaust system upstream of the nitrogen oxide reduction catalytic converter. As a heat source, the vaporizer has (1) a heatable deflector surface, onto which the reducing agent, which is supplied by a feed unit, is directed under pressure; or (2) a microwave generator.Type: GrantFiled: May 19, 2000Date of Patent: November 29, 2005Assignees: DaimlerChrysler AG, Dr. Ing. h.c.F. Porsche Aktiengesellschaft, Volkswagen Aktiengesellschaft, Audi Aktiengesellschaft, Bayerische Motoren Werke AktiengesellschaftInventors: Christian Goerigk, Stefan Wessels
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Patent number: 6892529Abstract: An Exhaust-gas purification system for an internal combustion engine, which, as seen in the direction of flow of the exhaust gas, has a particle filter, apparatus for providing a reducing agent in the exhaust-gas flow, a catalytic converter for reducing nitrogen oxide which is present in the exhaust gas, and a downstream oxidation catalytic converter. An upstream oxidation catalytic converter is arranged upstream of the particle filter.Type: GrantFiled: February 25, 2003Date of Patent: May 17, 2005Assignee: DaimlerChrysler AGInventors: Frank Duvinage, Christian Goerigk, Thomas Liebscher, Dieter Mainka, Siegfried Mueller-Lunz, Arno Nolte, Markus Paule
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Publication number: 20040237507Abstract: The invention proposes an exhaust-gas purification unit for purifying the exhaust gas from an internal combustion engine which is preferably operated in lean-burn mode, in particular a diesel engine used in motor vehicles, in which a particulate filter and a SCR catalytic converter are arranged in the exhaust pipe in succession in the direction of flow, and having a reducing-agent supply, it being possible for ammonia to be added to the exhaust gas from the internal combustion engine on the entry side of the SCR catalytic converter by the reducing-agent supply.Type: ApplicationFiled: July 21, 2004Publication date: December 2, 2004Inventors: Frank Duvinage, Christian Goerigk, Arno Nolte, Markus Paule, Henning Sander
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Publication number: 20040168905Abstract: NOx is generated by means of a plasma-enhanced method which, with the addition of H2-containing gas, reduces NOx to NH3 and uses the thus obtained NH3 as the reducing agent for an SCR catalyst for exhaust emission control. A plasma reactor is provided in the corresponding apparatus for performing the method.Type: ApplicationFiled: December 12, 2003Publication date: September 2, 2004Inventors: Frank Duvinage, Christian Goerigk, Thomas Hammer, Thomas Kappes, Arno Nolte, Markus Paule
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Publication number: 20030209011Abstract: An Exhaust-gas purification system for an internal combustion engine, which, as seen in the direction of flow of the exhaust gas, has a particle filter, apparatus for providing a reducing agent in the exhaust-gas flow, a catalytic converter for reducing nitrogen oxide which is present in the exhaust gas, and a downstream oxidation catalytic converter. An upstream oxidation catalytic converter is arranged upstream of the particle filter.Type: ApplicationFiled: February 25, 2003Publication date: November 13, 2003Inventors: Frank Duvinage, Christian Goerigk, Thomas Liebscher, Dieter Mainka, Siegfried Mueller-Lunz, Arno Nolte, Markus Paule
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Patent number: 6502390Abstract: The present invention concerns a method and a system for feeding a reducing agent into a catalyst device. A first reservoir is provided and has a solid reducing agent, a second reservoir is provided and has a solvent for the solid reducing agent, and a reducing agent solutions is produced from the solid reducing agent and the solvent. The reducing agent solution is intermittently stored in a third reservoir, and the reducing agent solution is fed from the third reservoir into the catalyst device.Type: GrantFiled: August 9, 2001Date of Patent: January 7, 2003Assignees: Dr. Ing. h.c.F. Porsche Aktiengesellschaft, Audi AG, Bayerische Motoren Werke Aktiengesellschaft, DaimlerChrysler AG, Volkswagen AGInventors: Christian Goerigk, Michael Illek, Stefan Wessels
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Patent number: 6367320Abstract: A process for monitoring the operation of a system for the aftertreatment of exhaust gas utilizes respective temperature sensors assigned to catalysts in the exhaust gas system. In addition, a sensor for detecting the NOx content in the exhaust gas is assigned to a reduction catalyst. The detected values, or functions thereof, are in each case compared with the definable reference values and when these definable limit values are exceeded, a corresponding defect information is triggered.Type: GrantFiled: May 26, 2000Date of Patent: April 9, 2002Assignees: Dr. Ing. h.c.F. Porsche Aktiengellschaft, AUDi AG, Bayerische Motoren Werke Aktiengesellschaft, DaimlerChrysler AG, Volkswagon AGInventors: Paul Kueper, Stefan Dietrich Peter, Michael Illek, Jens Mueller, Christian Goerigk, Stefan Wessels
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Publication number: 20020023433Abstract: The present invention concerns a method and a system for feeding a reducing agent into a catalyst device. A first reservoir is provided and has a solid reducing agent, a second reservoir is provided and has a solvent for the solid reducing agent, and a reducing agent solution is produced from the solid reducing agent and the solvent. The reducing agent solution is intermittently stored in a third reservoir, and the reducing agent solution is fed from the third reservoir into the catalyst device.Type: ApplicationFiled: August 9, 2001Publication date: February 28, 2002Inventors: Christian Goerigk, Michael Illek, Stefan Wessels
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Patent number: 5921076Abstract: A process and apparatus for reducing the nitrogen oxide content in oxygen-containing emissions is provided, particularly for internal-combustion engines, particularly of diesel engines and directly injecting Otto engines for motor vehicles. The nitrogen oxides contained in the exhaust gas are reduced by a suitable reducing agent, such as hydrogen or hydrocarbons, on a DENOX catalyst. For achieving an improved conversion rate for the nitrogen oxides, a combination of hydrogen and hydrocarbons are used as reducing agents. In different operating ranges of the internal-combustion engine only hydrogen, only hydrocarbons, or hydrogen and hydrocarbons are added. Preferably, for this purpose, the quantity of supplied hydrogen or hydrocarbons is reduced or increased with an increasing engine load and/or catalyst temperature and/or rotational engine speed.Type: GrantFiled: January 9, 1997Date of Patent: July 13, 1999Assignee: Daimler-Benz AGInventors: Bernd Krutzsch, Christian Goerigk, Stefan Kurze, Gunter Wenninger, Walter Boegner, Friedrich Wirbeleit