Patents by Inventor Michael Kaack
Michael Kaack 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: 11698009Abstract: An exhaust gas aftertreatment system for an internal combustion engine has an exhaust system that can be connected to an outlet of the internal combustion engine. A three-way catalytic converter that is situated close to the engine and, downstream from the three-way catalytic converter that is situated close to the engine, a second catalytic converter and a particle reduction device are arranged in the direction in which an exhaust gas of the internal combustion engine flows through an exhaust gas channel of the exhaust system. A fuel injector is arranged on the exhaust gas channel so as to inject fuel downstream from the three-way catalytic converter that is situated close to the engine and upstream from the second catalytic converter, and the exhaust system comprises a secondary air system with which secondary air can be blown into the exhaust gas channel downstream from the three-way catalytic converter that is situated close to the engine and upstream from the second catalytic converter.Type: GrantFiled: July 24, 2020Date of Patent: July 11, 2023Assignee: VOLKSWAGEN AKTIENGESELLSCHAFTInventors: Michael Kaack, Stefan Paukner, Falk-Christian Baron Von Ceumern-Lindenstjerna
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Patent number: 11668217Abstract: A device for exhaust gas aftertreatment in an internal combustion engine can be connected to an outlet of the internal combustion engine. The device comprises an exhaust gas system with an exhaust gas channel in which a three-way catalytic converter is arranged, and an exhaust gas burner with which hot burner exhaust gases can be fed into the exhaust gas channel at a feed point upstream from the three-way catalytic converter. The three-way catalytic converter is configured as a lambda probe catalytic converter and comprises a first catalyst volume and a second catalyst volume, whereby a lambda probe is arranged downstream from the first catalyst volume and upstream from the second catalyst volume, whereby the first catalyst volume has a lower oxygen storage capacity than the second catalyst volume. A method for exhaust gas aftertreatment in an internal combustion engine has such an exhaust gas aftertreatment device.Type: GrantFiled: May 26, 2022Date of Patent: June 6, 2023Assignees: VOLKSWAGEN AKITENGESELLSCHAFT, Dr. Ing. h.c. F. Porsche AktiengesellschaftInventors: Falk-Christian Baron Von Ceumern-Lindenstjerna, Stefan Paukner, Michael Kaack, Sebastian Hemminger
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Patent number: 11492949Abstract: An exhaust gas aftertreatment system for an internal combustion engine, which comprises an exhaust system which can be connected to the outlet of an internal combustion engine. A catalytic converter close to the engine and a second catalytic converter arranged downstream of the catalytic converter in an underbody of a motor vehicle are provided in the flow direction of an exhaust gas from the internal combustion engine flowing through an exhaust gas duct of the exhaust system. An inlet point for secondary air, an exhaust gas burner, and a fuel injector for introducing fuel into the exhaust gas duct are arranged downstream of the catalytic converter close to the engine and upstream of the second catalytic converter. According to the invention, the exhaust gas burner is activated immediately after the internal combustion engine is started in order to heat the second catalytic converter to its light-off temperature.Type: GrantFiled: February 6, 2020Date of Patent: November 8, 2022Assignee: VOLKSWAGEN AKTIENGESELLSCHAFTInventors: Tolga Bozalp, Stefan Paukner, Falk-Christian Baron Von Ceumern-Lindenstjerna, Michael Kaack
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Publication number: 20220282655Abstract: A device for exhaust gas aftertreatment in an internal combustion engine can be connected to an outlet of the internal combustion engine. The device comprises an exhaust gas system with an exhaust gas channel in which a three-way catalytic converter is arranged, and an exhaust gas burner with which hot burner exhaust gases can be fed into the exhaust gas channel at a feed point upstream from the three-way catalytic converter. The three-way catalytic converter is configured as a lambda probe catalytic converter and comprises a first catalyst volume and a second catalyst volume, whereby a lambda probe is arranged downstream from the first catalyst volume and upstream from the second catalyst volume, whereby the first catalyst volume has a lower oxygen storage capacity than the second catalyst volume. A method for exhaust gas aftertreatment in an internal combustion engine has such an exhaust gas aftertreatment device.Type: ApplicationFiled: May 26, 2022Publication date: September 8, 2022Applicants: VOLKSWAGEN AKTIENGESELLSCHAFT, Dr. Ing. h.c. F. Porsche AktiengesellschaftInventors: Falk-Christian BARON VON CEUMERN-LINDENSTJERNA, Stefan PAUKNER, Michael KAACK, Sebastian HEMMINGER
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Publication number: 20220120202Abstract: An exhaust gas aftertreatment system for an internal combustion engine, which comprises an exhaust system which can be connected to the outlet of an internal combustion engine. A catalytic converter close to the engine and a second catalytic converter arranged downstream of the catalytic converter in an underbody of a motor vehicle are provided in the flow direction of an exhaust gas from the internal combustion engine flowing through an exhaust gas duct of the exhaust system. An inlet point for secondary air, an exhaust gas burner, and a fuel injector for introducing fuel into the exhaust gas duct are arranged downstream of the catalytic converter close to the engine and upstream of the second catalytic converter. According to the invention, the exhaust gas burner is activated immediately after the internal combustion engine is started in order to heat the second catalytic converter to its light-off temperature.Type: ApplicationFiled: February 6, 2020Publication date: April 21, 2022Applicant: VOLKSWAGEN AKTIENGESELLSCHAFTInventors: Tolga BOZALP, Stefan PAUKNER, Falk-Chrilstian BARON VON CEUMERN-LINDENSTJERNA, Michael KAACK
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Patent number: 11261771Abstract: A method for heating a catalytic converter in an exhaust system of an internal combustion engine, in which an exhaust gas burner for heating the catalytic converter is arranged, upstream of the catalytic converter. A lambda probe for controlling the combustion air ratio of the exhaust gas burner is arranged immediately downstream of the exhaust gas burner and upstream of the catalytic converter.Type: GrantFiled: August 7, 2020Date of Patent: March 1, 2022Inventors: Falk-Christian Baron Von Ceumern-Lindenstjerna, Stefan Paukner, Michael Kaack
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Patent number: 11181024Abstract: The invention relates to method for operating an internal combustion engine that has at least two combustion chambers, of which at least one is operated at a substoichiometric air-fuel ratio and of which at least another is operated at a superstoichiometric air-fuel ratio. The outlet of the internal combustion engine is connected to an exhaust gas system in which a three-way catalytic converter is arranged in the flow direction of an exhaust gas through an exhaust gas channel, and an exhaust gas heat-recovery device is arranged downstream from the three-way catalytic converter.Type: GrantFiled: October 25, 2019Date of Patent: November 23, 2021Assignee: VOLKSWAGEN AKTIENGESELLSCHAFTInventors: Falk-Christian Baron Von Ceumern-Lindenstjerna, Stefan Paukner, André Horn, Michael Kaack, Thomas Maischik, Asmus Carstensen
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Patent number: 10941689Abstract: A method for the exhaust gas aftertreatment of a combustion engine having an exhaust system in which at least three catalytic converters and at least three lambda probes are disposed. Downstream of a first catalytic converter, an actively heatable catalytic converter is provided, which is actively heated at a start of the combustion engine. The lambda control of the combustion engine is carried out in each case by that lambda probe disposed downstream of the respective last catalytic converter to reach the light-off temperature thereof. Also, an exhaust gas aftertreatment system for implementing such a method.Type: GrantFiled: August 7, 2019Date of Patent: March 9, 2021Assignee: VOLKSWAGEN AKTIENGESELLSCHAFTInventors: Stefan Paukner, Falk-Christian Baron Von Ceumern-Lindenstjerna, Michael Manz, Michael Kaack
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Patent number: 10934912Abstract: The invention relates to a method for the exhaust aftertreatment of an internal combustion engine, which on the outlet side is connected to an exhaust gas system. Provided in the exhaust gas system is at least one exhaust aftertreatment component with which, upon reaching the light-off temperature of this exhaust aftertreatment component, the gaseous limited exhaust gas components may be converted into unlimited exhaust gas components. An introduction point is provided at an exhaust duct of the exhaust gas system, at which a hot gas, in particular an exhaust gas of an exhaust gas burner, is introduced into the exhaust duct. The hot gas mixes with the exhaust gas of the internal combustion engine in such a way that a hot mixed gas results in which the unburned exhaust gas components are oxidized to unlimited exhaust gas components, without a catalytically active surface.Type: GrantFiled: July 29, 2019Date of Patent: March 2, 2021Assignee: VOLKSWAGEN AKTIENGESELLSCHAFTInventors: Falk-Christian Baron Von Ceumern-Lindenstjerna, Stefan Paukner, Michael Alexander Manz, Michael Kaack, Jens Gockel
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Publication number: 20210040873Abstract: A method for heating a catalytic converter in an exhaust system of an internal combustion engine, in which an exhaust gas burner for heating the catalytic converter is arranged, upstream of the catalytic converter. A lambda probe for controlling the combustion air ratio of the exhaust gas burner is arranged immediately downstream of the exhaust gas burner and upstream of the catalytic converter.Type: ApplicationFiled: August 7, 2020Publication date: February 11, 2021Applicant: VOLKSWAGEN AKTIENGESELLSCHAFTInventors: Falk-Christian BARON VON CEUMERN-LINDENSTJERNA, Stefan PAUKNER, Michael KAACK
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Publication number: 20210025303Abstract: An exhaust gas aftertreatment system for an internal combustion engine has an exhaust system that can be connected to an outlet of the internal combustion engine. A three-way catalytic converter that is situated close to the engine and, downstream from the three-way catalytic converter that is situated close to the engine, a second catalytic converter and a particle reduction device are arranged in the direction in which an exhaust gas of the internal combustion engine flows through an exhaust gas channel of the exhaust system. A fuel injector is arranged on the exhaust gas channel so as to inject fuel downstream from the three-way catalytic converter that is situated close to the engine and upstream from the second catalytic converter, and the exhaust system comprises a secondary air system with which secondary air can be blown into the exhaust gas channel downstream from the three-way catalytic converter that is situated close to the engine and upstream from the second catalytic converter.Type: ApplicationFiled: July 24, 2020Publication date: January 28, 2021Applicant: VOLKSWAGEN AKTIENGESELLSCHAFTInventors: Michael KAACK, Stefan PAUKNER, Falk-Christian BARON VON CEUMERN-LINDENSTJERNA
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Patent number: 10781801Abstract: An axial piston motor having a cylinder housing, in which a plurality of cylinders are formed, and having pistons which are movably guided in the cylinders, wherein the pistons are attached to a swash plate and wherein a flow of a fluid that has entered via an inlet into the axial piston motor is controlled into and out of the cylinders by means of inlet and outlet valves, wherein the inlet and/or outlet valves comprise fluid change openings which are formed in a cylinder head plate and which can be temporarily released and covered by means of a rotary slide, for which purpose the rotary slide forms at least one passage opening.Type: GrantFiled: September 16, 2019Date of Patent: September 22, 2020Assignee: Volkswagen AktiengesellschaftInventors: Asmus Carstensen, Artur Semke, Thomas Schulenburg, Andreas Herr, Marcus Dallmann, Bernd Hupfeld, Holger Lange, Andre Horn, Michael Kaack, Thomas Maischik, Uwe Kammann
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Publication number: 20200232364Abstract: A device for exhaust gas aftertreatment in an internal combustion engine can be connected to an outlet of the internal combustion engine. The device comprises an exhaust gas system with an exhaust gas channel in which a three-way catalytic converter is arranged, and an exhaust gas burner with which hot burner exhaust gases can be fed into the exhaust gas channel at a feed point upstream from the three-way catalytic converter. The three-way catalytic converter is configured as a lambda probe catalytic converter and comprises a first catalyst volume and a second catalyst volume, whereby a lambda probe is arranged downstream from the first catalyst volume and upstream from the second catalyst volume, whereby the first catalyst volume has a lower oxygen storage capacity than the second catalyst volume. A method for exhaust gas aftertreatment in an internal combustion engine has such an exhaust gas aftertreatment device.Type: ApplicationFiled: January 23, 2020Publication date: July 23, 2020Applicants: VOLKSWAGEN AKTIENGESELLSCHAFT, Dr. Ing. h.c. F. Porsche AktiengesellschaftInventors: Falk-Christian BARON VON CEUMERN-LINDENSTJERNA, Stefan PAUKNER, Michael KAACK, Sebastian HEMMINGER
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Publication number: 20200232359Abstract: An exhaust gas system for an internal combustion engine, comprising a first exhaust emission control device close to the engine and a second exhaust emission control device remote from the engine. The second exhaust emission control device is heatable by a combination of an upstream burner and an electric heating device. For heating the exhaust emission control devices after an engine start, the internal combustion engine is operated with at least one engine-internal measure for raising the exhaust gas temperature, and the burner and the electric heating device are activated at the same time or offset in time for heating the second exhaust emission control device. A mixed gas entering the second exhaust emission control device is set to a stoichiometric lambda value. The invention allows accelerated heating of the exhaust emission control devices, and thus, a reduction in starting emissions.Type: ApplicationFiled: January 15, 2020Publication date: July 23, 2020Applicant: VOLKSWAGEN AKTIENGESELLSCHAFTInventors: Michael KAACK, Stefan PAUKNER, Falk-Christian BARON VON CEUMERN-LINDENSTJERNA, Tolga BOZALP
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Publication number: 20200191084Abstract: The invention relates to a method for exhaust aftertreatment of an internal combustion engine with at least one combustion chamber and an outlet that is connected to an exhaust system, wherein at least one catalytic converter is arranged in the exhaust system. Furthermore, a secondary-air system is provided with which secondary air can be introduced into an exhaust duct of the exhaust system at an intake point downstream from the outlet of the internal combustion engine and upstream from the catalytic converter, and a first lambda sensor is arranged in the exhaust duct downstream from the intake point and upstream from the catalytic converter. The internal combustion engine is operated immediately after start-up with a substoichiometric combustion air ratio (? E<1), and secondary air is introduced into the exhaust duct of the exhaust system downstream from an outlet of the internal combustion engine and upstream from the first lambda sensor.Type: ApplicationFiled: December 11, 2019Publication date: June 18, 2020Applicant: VOLKSWAGEN AKTIENGESELLSCHAFTInventors: Falk-Christian BARON VON CEUMERN-LINDENSTJERNA, Christoph Nee, Michael Kaack, Stefan Paukner
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Publication number: 20200131959Abstract: The invention relates to method for operating an internal combustion engine that has at least two combustion chambers, of which at least one is operated at a substoichiometric air-fuel ratio and of which at least another is operated at a superstoichiometric air-fuel ratio. The outlet of the internal combustion engine is connected to an exhaust gas system in which a three-way catalytic converter is arranged in the flow direction of an exhaust gas through an exhaust gas channel, and an exhaust gas heat-recovery device is arranged downstream from the three-way catalytic converter.Type: ApplicationFiled: October 25, 2019Publication date: April 30, 2020Applicant: VOLKSWAGEN AKTIENGESELLSCHAFTInventors: Falk-Christian BARON VON CEUMERN-LINDENSTJERNA, Stefan PAUKNER, André HORN, Michael KAACK, Thomas MAISCHIK, Asmus CARSTENSEN
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Publication number: 20200049050Abstract: A method for the exhaust gas aftertreatment of a combustion engine having an exhaust system in which at least three catalytic converters and at least three lambda probes are disposed. Downstream of a first catalytic converter, an actively heatable catalytic converter is provided, which is actively heated at a start of the combustion engine. The lambda control of the combustion engine is carried out in each case by that lambda probe disposed downstream of the respective last catalytic converter to reach the light-off temperature thereof. Also, an exhaust gas aftertreatment system for implementing such a method.Type: ApplicationFiled: August 7, 2019Publication date: February 13, 2020Applicant: VOLKSWAGEN AKTIENGESELLSCHAFTInventors: Stefan PAUKNER, Falk-Christian BARON VON CEUMERN-LINDENSTJERNA, Michael MANZ, Michael KAACK
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Publication number: 20200040784Abstract: The invention relates to a method for the exhaust aftertreatment of an internal combustion engine, which on the outlet side is connected to an exhaust gas system. Provided in the exhaust gas system is at least one exhaust aftertreatment component with which, upon reaching the light-off temperature of this exhaust aftertreatment component, the gaseous limited exhaust gas components may be converted into unlimited exhaust gas components. An introduction point is provided at an exhaust duct of the exhaust gas system, at which a hot gas, in particular an exhaust gas of an exhaust gas burner, is introduced into the exhaust duct. The hot gas mixes with the exhaust gas of the internal combustion engine in such a way that a hot mixed gas results in which the unburned exhaust gas components are oxidized to unlimited exhaust gas components, without a catalytically active surface.Type: ApplicationFiled: July 29, 2019Publication date: February 6, 2020Applicant: VOLKSWAGEN AKTIENGESELLSCHAFTInventors: Falk-Christian Baron Von Ceumern-Lindenstjerna, Stefan Paukner, Michael Alexander Manz, Michael Kaack, Jens Gockel
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Publication number: 20200011306Abstract: An axial piston motor having a cylinder housing, in which a plurality of cylinders are formed, and having pistons which are movably guided in the cylinders, wherein the pistons are attached to a swash plate and wherein a flow of a fluid that has entered via an inlet into the axial piston motor is controlled into and out of the cylinders by means of inlet and outlet valves, wherein the inlet and/or outlet valves comprise fluid change openings which are formed in a cylinder head plate and which can be temporarily released and covered by means of a rotary slide, for which purpose the rotary slide forms at least one passage opening.Type: ApplicationFiled: September 16, 2019Publication date: January 9, 2020Applicant: VOLKSWAGEN AKTIENGESELLSCHAFTInventors: Asmus CARSTENSEN, Artur SEMKE, Thomas SCHULENBURG, Andreas HERR, Marcus DALLMANN, Bernd HUPFELD, Holger LANGE, Andre HORN, Michael KAACK, Thomas MAISCHIK, Uwe KAMMANN
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Patent number: 9535040Abstract: The invention relates to a method for testing connections of metal workpieces to plastic compounds for cavities by means of ultrasound, wherein the plastic compound is arranged between the workpiece as an intermediate layer or is connected to the workpiece on one side and the cavity is located within the plastic compound, wherein the cavity is connected to the workpiece by means of a remaining plastic layer or plastic skin and wherein the plastic compound is exposed to ultrasonic signals of a certain test frequency and pulse length from the metal side of the workpiece by means of at least one ultrasonic probe, and in particular the ultrasonic signals reflected by flaws in the plastic compound are detected by the same or another ultrasonic probe and converted into electrical signals that can be evaluated and subjected to a threshold observation. The test frequency of the ultrasonic signals is set in a range of 1 to 10 MHz so that the attenuation of the sound is minimal after passing through the plastic skin.Type: GrantFiled: November 29, 2010Date of Patent: January 3, 2017Assignee: SALZGITTER MANNESMANN LINE PIPE GMBHInventors: Michael Kaack, Christian Kremer, Jörn Winkels, Holger Brauer