Patents by Inventor Markus Paule
Markus Paule 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: 7662197Abstract: In a method for operating an exhaust-gas cleaning unit of a diesel engine including a particle filter and a nitrogen oxide storage device arranged upstream of the particle filter, wherein sulfur regeneration of the nitrogen oxide storage device is performed periodically at raised exhaust gas temperatures and, in certain phases, with a rich exhaust gas composition, and also soot regeneration of the particle filter is performed at raised exhaust gas temperatures with a lean exhaust gas composition, at least some of the sulfur regeneration and the soot regeneration phases are performed in a combined soot and sulfur regeneration phase, and for the sulfur regeneration, at least temporarily, a rich exhaust-gas composition with a temperature higher than the temperature of the lean exhaust gas composition is provided for the soot regeneration of the particle filter.Type: GrantFiled: January 7, 2008Date of Patent: February 16, 2010Assignee: Daimler AGInventors: Frank Duvinags, Stefan Kurze, Thomas Liebscher, Arno Nolte, Markus Paule, Norbert Ruzicka, Joachim Schommers
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Publication number: 20100005783Abstract: A device for monitoring an exhaust gas catalytic converter in the exhaust system of an internal combustion engine, includes a measuring apparatus that is arranged in the exhaust system in such a way that, in the greatest part of the operating range of the internal combustion engine, it assumes a temperature that is correlated with a temperature of the exhaust gas catalytic converter. The measuring apparatus has a temperature-sensitive component with a temperature-dependent characteristic component parameter that changes either abruptly at a predetermined transition temperature or temperature range, or continuously in a predetermined way as a function of the temperature. A control and evaluation unit connected to the measuring arrangement detects the characteristic component parameter and/or a change in the latter, and correlates it with an aging state of the exhaust gas catalytic converter.Type: ApplicationFiled: April 3, 2007Publication date: January 14, 2010Applicant: DAIMLER CHRYSLER AGInventors: Berthold Keppeler, Aleksandar Knezevic, Markus Paule, Detlef Scharr
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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: 20080314028Abstract: In a method for operating an air-compressing fuel-injection internal combustion engine having an exhaust gas post-treatment system with a particle filter and a nitrogen oxide reduction catalytic converter, a plurality of internal combustion engine operating settings are provided, each having respective predefined values for predefined internal combustion engine operating parameters. A heating operating setting is set when the internal combustion engine is warming up, while a basic operating setting is set in the warmed-up, while a basic operating setting is set in the warmed-up state. When the temperature in the exhaust gas system exceeds a predefinable first value, the heating operating setting is changed over to the basic operating setting. In the warmed-up state, at least one further, (third) operating setting, with an exhaust gas recirculation rate that is reduced compared to the basic operating setting, is provided in addition to the basic operating setting.Type: ApplicationFiled: August 31, 2006Publication date: December 25, 2008Applicant: Daimler AGInventors: Bernd Christner, Alexander Kaiser, Berthold Keppeler, Holger Kissling, Markus Paule
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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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Publication number: 20080216463Abstract: In a device and a method for removing nitrogen oxides from the exhaust of an internal combustion engine which is operated predominantly with an excess of air, the internal combustion engine is assigned an exhaust system having a nitrogen oxide reduction catalytic converter which comprises two catalytic converter parts, whose reducing agent filling levels can be determined. Metering of a reducing-agent-containing additive into the exhaust gas of the internal combustion engine takes place as a function of the reducing agent filling level of the first catalytic converter part and/or of the second catalytic converter part.Type: ApplicationFiled: March 14, 2006Publication date: September 11, 2008Applicant: DaimlerChrysler AGInventors: Marc Chaineux, Bernd Christner, Nicholas Fekete, Berthold Keppeler, Markus Paule
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Publication number: 20080134648Abstract: In a method for operating an exhaust-gas cleaning unit of a diesel engine including a particle filter and a nitrogen oxide storage device arranged upstream of the particle filter, wherein sulfur regeneration of the nitrogen oxide storage device is performed periodically at raised exhaust gas temperatures and, in certain phases, with a rich exhaust gas composition, and also soot regeneration of the particle filter is performed at raised exhaust gas temperatures with a lean exhaust gas composition, at least some of the sulfur regeneration and the soot regeneration phases are performed in a combined soot and sulfur regeneration phase, and for the sulfur regeneration, at least temporarily, a rich exhaust-gas composition with a temperature higher than the temperature of the lean exhaust gas composition is provided for the soot regeneration of the particle filter.Type: ApplicationFiled: January 7, 2008Publication date: June 12, 2008Inventors: Frank Duvinags, Stefan Kurze, Thomas Liebscher, Arno Nolte, Markus Paule, Norbert Ruzicka, Joachim Schommers
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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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Publication number: 20070175208Abstract: An exhaust gas aftertreatment installment and associated exhaust gas aftertreatment method utilizes a nitrogen oxide storage catalytic converter and an SCR catalytic converter. A particulate filter is provided upstream of the nitrogen oxide storage catalytic converter or between the latter and the SCR catalytic converter or downstream of the SCR catalytic converter. The time of regeneration operating phases of the nitrogen oxide storage catalytic converter can be determined as a function of the nitrogen oxide content of the exhaust gas downstream of the nitrogen oxide storage catalytic converter or of the SCR catalytic converter and/or as a function of the ammonia loading of the latter. Moreover, a desired ammonia generation quantity can be determined for a respective regeneration operating phase. The installation and method are adopted for use for motor vehicle internal combustion engines and other engines which are operated predominantly in lean-burn mode.Type: ApplicationFiled: March 23, 2007Publication date: August 2, 2007Applicant: DAIMLERCHRYSLER AGInventors: Brigitte BANDL-KONRAD, Andreas HERTZBERG, Bernd KRUTZSCH, Arno NOLTE, Markus PAULE, Stefan RENFFTLEN, Norbert WALDBUESSER, Michel WEIBEL, Guenter WENNINGER, Rolf WUNSCH
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Patent number: 7210288Abstract: An exhaust gas aftertreatment installment and associated exhaust gas aftertreatment method utilizes a nitrogen oxide storage catalytic converter and an SCR catalytic converter. A particulate filter is provided upstream of the nitrogen oxide storage catalytic converter or between the latter and the SCR catalytic converter or downstream of the SCR catalytic converter. The time of regeneration operating phases of the nitrogen oxide storage catalytic converter can be determined as a function of the nitrogen oxide content of the exhaust gas downstream of the nitrogen oxide storage catalytic converter or of the SCR catalytic converter and/or as a function of the ammonia loading of the latter. Moreover, a desired ammonia generation quantity can be determined for a respective regeneration operating phase. The installation and method are adopted for use for motor vehicle internal combustion engines and other engines which are operated predominantly in lean-burn mode.Type: GrantFiled: December 16, 2003Date of Patent: May 1, 2007Assignee: DaimlerChrysler AGInventors: Brigitte Bandl-Konrad, Andreas Hertzberg, Bernd Krutzsch, Arno Nolte, Markus Paule, Stefan Renfftlen, Norbert Waldbuesser, Michel Weibel, Guenter Wenninger, Rolf Wunsch
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Publication number: 20070028601Abstract: The exhaust gas aftertreatment device according to the invention having a reforming unit for generating hydrogen by steam reforming, partial oxidation of hydrocarbons and/or mixed forms thereof is distinguished by the fact that the reforming unit is arranged directly in the main exhaust gas stream from an internal combustion engine. The steam and residual oxygen which are required for the reforming preferably originate from the exhaust gas. The step of providing the required reducing agents consists in briefly switching the internal combustion engine, which is predominantly operated in lean-burn mode and the exhaust gas from which is undergoing the aftertreatment, to rich-burn mode, allowing reforming by means of the reforming reactor according to the invention using the hydrocarbons that are present in the exhaust gas.Type: ApplicationFiled: February 25, 2004Publication date: February 8, 2007Applicant: Daimlerchrysler AGInventors: Frank Duvinage, Berthold Keppeler, Bernd Krutzsch, Markus Paule, Michel Weibel
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Publication number: 20060153761Abstract: An exhaust gas aftertreatment installment and associated exchaust gas aftertreatment method utilizes a nitrogen oxide storage catalytic converter and an SCR catalytic converter. A particulate filter is provided upstream of the nitrogen oxide storage catalytic converter or between the latter and the SCR catalytic converter or downstream of the SCR catalytic converter. The time of regeneration operating phases of the nitrogen oxide storage catalytic converter can be determined as a function of the nitrogen oxide content of the exhaust gas downstream of the nitrogen oxide storage catalytic converter or of the SCR catalytic converter and/or as a function of the ammonia loading of the latter. Moreover, a desired ammonia generation quantity can be determined for a respective regeneration operating phase. The installation and method are adopted for use for motor vehicle internal combustion engines and other engines which are operated predominantly in lean-burn mode.Type: ApplicationFiled: December 16, 2003Publication date: July 13, 2006Applicant: DaimlerChrysler AGInventors: Brigitte Bandl-Konrad, Andreas Hertzberg, Bernd Krutzsch, Arno Nolte, Markus Paule, Stefan Renfftlen, Norbert Waldbuesser, Michel Weibel, Guenter Wenninger, Rolf Wunsch
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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: 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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Patent number: 6873901Abstract: A method for operating an electronic controller of a motor vehicle, in particular of an engine controller, with which signal processing is carried out in order to control the operation of the motor vehicle and/or of the engine. The signal processing of the controller includes a filtering operation, the filtering operation being carried out as a function of the operating state of the motor vehicle and/or of the engine.Type: GrantFiled: December 2, 2002Date of Patent: March 29, 2005Assignee: DaimlerChrysler AGInventors: Bernd Christner, Frank Duvinage, Arno Nolte, Markus Paule, Henning Sander
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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