Patents by Inventor Andreas Herr
Andreas Herr 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: 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: 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: 9670836Abstract: A drive unit for a motor vehicle that has a combustion machine having an internal combustion engine (10) as well as an exhaust gas system via which exhaust gas can be discharged from the internal combustion engine (10), and has a cyclic device that can be used to convert the thermal energy contained in the exhaust gas into mechanical work in a clockwise thermodynamic cycle, whereby the cycle comprises a heat transfer from the exhaust gas to a working medium in a first heat exchange device, as a result of which the temperature and/or the pressure of the working medium is increased, comprises an expansion of the working medium in an expansion device (30) for generating the mechanical work, and comprises a heat transfer from the working medium to a cooling medium in a second heat exchange device.Type: GrantFiled: July 9, 2014Date of Patent: June 6, 2017Assignee: VOLKSWAGEN AKTIENGESELLSCHAFTInventors: Asmus Carstensen, Marcus Dallmann, Jörg Fritzsche, Andreas Herr, Christoph Käppner, Thomas Schulenburg, Artur Semke, Jörg Volkmann
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Patent number: 9458752Abstract: A heat exchange device having a first media channel for a first medium and a second media channel for a second medium is further refined in that, in at least one section of the heat exchange device, a third media channel for a transfer medium is arranged between the first media channel and the second media channel, so that the heat transfer from the first medium to the second medium takes place via the transfer medium.Type: GrantFiled: July 9, 2014Date of Patent: October 4, 2016Assignee: VOLKSWAGEN AKTIENGESELLSCHAFTInventors: Asmus Carstensen, Artur Semke, Thomas Schulenburg, Andreas Herr, Jörg Fritzsche, Marcus Dallmann, Christoph Käppner, Jörg Volkmann, Thomas Maischik
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Publication number: 20150013335Abstract: A heat exchange device having a first media channel for a first medium and a second media channel for a second medium is further refined in that, in at least one section of the heat exchange device, a third media channel for a transfer medium is arranged between the first media channel and the second media channel, so that the heat transfer from the first medium to the second medium takes place via the transfer medium.Type: ApplicationFiled: July 9, 2014Publication date: January 15, 2015Inventors: Asmus CARSTENSEN, Artur SEMKE, Thomas SCHULENBURG, Andreas HERR, Jörg FRITZSCHE, Marcus DALLMANN, Christoph KÄPPNER, Jörg VOLKMANN, Thomas MAISCHIK
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Publication number: 20150013328Abstract: A drive unit for a motor vehicle that has a combustion machine having an internal combustion engine (10) as well as an exhaust gas system via which exhaust gas can be discharged from the internal combustion engine (10), and has a cyclic device that can be used to convert the thermal energy contained in the exhaust gas into mechanical work in a clockwise thermodynamic cycle, whereby the cycle comprises a heat transfer from the exhaust gas to a working medium in a first heat exchange device, as a result of which the temperature and/or the pressure of the working medium is increased, comprises an expansion of the working medium in an expansion device (30) for generating the mechanical work, and comprises a heat transfer from the working medium to a cooling medium in a second heat exchange device.Type: ApplicationFiled: July 9, 2014Publication date: January 15, 2015Inventors: Asmus CARSTENSEN, Marcus DALLMANN, Jörg FRITZSCHE, Andreas HERR, Christoph KÄPPNER, Thomas SCHULENBURG, Artur SEMKE, Jörg VOLKMANN
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Patent number: 7770383Abstract: In a device for dosing and transporting dry urea, e.g., for implementing the SCR method in a motor vehicle, the device includes a storage vessel containing the dry urea in the form of pellets, the wall of the storage vessel having an opening to which a transport line is connected on the outer side. The device also includes a compressed air nozzle which is arranged inside the storage vessel at a distance from the opening, is oriented towards the opening, and may be supplied with compressed air, and a portioning element having an upper side oriented towards the inside of the storage vessel and a lower side opposite the wall of the storage vessel. At least one continuous channel having a larger cross section than the dimensions of the pellets connects the upper side and the lower side in order to form at least one receiving element for the pellets.Type: GrantFiled: October 31, 2003Date of Patent: August 10, 2010Assignee: Volkswagen AGInventors: Sebastian Kaefer, Werner Mueller, Andreas Herr, Andreas Lacroix
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Publication number: 20060086079Abstract: In a device for dosing and transporting dry urea, e.g., for implementing the SCR method in a motor vehicle, the device includes a storage vessel containing the dry urea in the form of pellets, the wall of the storage vessel having an opening to which a transport line is connected on the outer side. The device also includes a compressed air nozzle which is arranged inside the storage vessel at a distance from the opening, is oriented towards the opening, and may be supplied with compressed air, and a portioning element having an upper side oriented towards the inside of the storage vessel and a lower side opposite the wall of the storage vessel. At least one continuous channel having a larger cross section than the dimensions of the pellets connects the upper side and the lower side in order to form at least one receiving element for the pellets.Type: ApplicationFiled: October 31, 2003Publication date: April 27, 2006Inventors: Sebastian Kaefer, Werner Mueller, Andreas Herr, Andreas Lacroix
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Patent number: 6928807Abstract: A method is provided for producing ammonia (NH3) and introducing the produced ammonia (NH3) into an exhaust gas stream as a reduction means for selectively catalytically reducing nitrogen oxides contained in the exhaust gas stream, which is an exhaust stream generated by the combustion process of a motor, a gas turbine, or a burner. The method comprises feeding dry urea from a supply container in a controlled amount to reactor and subjecting the dry urea in the reactor to a sufficiently rapid thermal treatment such that a gas mixture comprising the reaction products of ammonia (NH3) and isocyanic acid (HCNO) is created. Also, the method comprises immediately catalytically treating the thus produced gas mixture in the presence of water such that the isocyanic acid (HCNO) resulting from the rapid thermal treatment is converted, via quantitative hydrolysis treatment, into ammonia (NH3) and carbon dioxide (CO2).Type: GrantFiled: February 14, 2003Date of Patent: August 16, 2005Assignee: MAN Nutzfahrzeuge AGInventors: Eberhard Jacob, Sebastian Käfer, Werner Müller, Andreas Lacroix, Andreas Herr
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Publication number: 20040040288Abstract: A method is provided for producing ammonia (NH3) and introducing the produced ammonia (NH3) into an exhaust gas stream as a reduction means for selectively catalytically reducing nitrogen oxides contained in the exhaust gas stream, which is an exhaust stream generated by the combustion process of a motor, a gas turbine, or a burner. The method comprises feeding dry urea from a supply container in a controlled amount to reactor and subjecting the dry urea in the reactor to a sufficiently rapid thermal treatment such that a gas mixture comprising the reaction products of ammonia (NH3) and isocyanic acid (HCNO) is created. Also, the method comprises immediately catalytically treating the thus produced gas mixture in the presence of water such that the isocyanic acid (HCNO) resulting from the rapid thermal treatment is converted, via quantitative hydrolysis treatment, into ammonia (NH3) and carbon dioxide (CO2).Type: ApplicationFiled: February 14, 2003Publication date: March 4, 2004Inventors: Eberhard Jacob, Sebastian Kafer, Werner Muller, Andreas Lacroix, Andreas Herr