Patents by Inventor Bernd Maurer
Bernd Maurer 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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Publication number: 20220316496Abstract: A cooling fan has a fan shroud with a fan wheel recess surrounded by a shroud ring and a fan wheel rotatably mounted in the fan wheel recess for conveying the air flow along a conveying direction from a shroud upper side to a shroud underside. The fan wheel has a central hub cup with radially orientated blades and an outer ring connecting the blades at the blade tip ends. A circumferential ring gap is formed between the outer ring and the shroud ring. A rib structure in the ring gap reduces swirl in a gap flow orientated against the conveying direction. A shroud ring section of the shroud ring extends axially beyond the outer ring on the shroud underside. The shroud ring section is orientated parallel or at an angle of inclination and radially inwards relative to the conveying direction.Type: ApplicationFiled: June 21, 2022Publication date: October 6, 2022Inventors: Christian Froh, Bernd Maurer, Thomas Dreesen
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Publication number: 20220275812Abstract: An electric-motor radiator fan of a motor vehicle has a fan shroud with a motor holder. An electric motor is inserted in the motor holder. A heat shield plate is arranged on the end side of the electric motor. The heat shield plate is placed onto a projection of the motor holder by way of a cut-out, and the heat shield plate is pivoted around the projection, which forms an axis of rotation, in such a way that the heat shield plate is forced at least in sections into at least one holding contour of the motor holder in a positive locking and/or friction-locking manner.Type: ApplicationFiled: July 29, 2020Publication date: September 1, 2022Inventor: Bernd Maurer
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Patent number: 9115622Abstract: A heating module (1) for an exhaust-gas purification system connected to the outlet of an internal combustion engine comprises a catalytic burner, with an HC injector (14) and with an oxidation catalytic converter (12) positioned downstream of the HC injector (14) in the flow direction of the exhaust gas, for supplying thermal energy to an exhaust-gas purification unit of the exhaust-gas purification system. It is provided here that the heating module (1) has a main section (2), a secondary section (3) which comprises the catalytic burner (12, 14), and a device (4, 5) for controlling the exhaust-gas mass flow flowing through the secondary section (3). In a first embodiment, the main section (2) has, in the inlet region or the heating module (1), an overflow pipe portion (6) which has overflow openings (7), between which overflow diverting chambers (8) is situated, parallel to the main section (2) of the heating module (1), the secondary section portion (11) with the oxidation catalytic converter (12).Type: GrantFiled: March 26, 2012Date of Patent: August 25, 2015Assignee: HJS Emission Technology GmbH & Co. KGInventors: Bettina Baier, Bernd Maurer, Klaus Schrewe, Frank Noack, Thomas Kästner
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Patent number: 8904764Abstract: The invention relates to a method for feeding thermal energy into an exhaust emission control unit (2) connected in the exhaust gas system of an internal combustion engine by heating the exhaust gas flowing to the exhaust emission control unit (2). Said exhaust gas is heated to a SET temperature. In said method, the exhaust gas discharged from the internal combustion engine is heated to the SET temperature by converting hydrocarbons (HCs) metered into the exhaust gas flow at two oxidation catalytic converters (7, 10) series-connected in the flow direction of the exhaust gas.Type: GrantFiled: March 26, 2012Date of Patent: December 9, 2014Assignee: HJS Emission Technology GmbH & Co. KGInventors: Bettina Baier, Bernd Maurer, Klaus Schrewe, Frank Noack
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Publication number: 20140013729Abstract: A heating module (1) for an exhaust-gas purification system connected to the outlet of an internal combustion engine comprises a catalytic burner, with an HC injector (14) and with an oxidation catalytic converter (12) positioned downstream of the HC injector (14) in the flow direction of the exhaust gas, for supplying thermal energy to an exhaust-gas purification unit of the exhaust-gas purification system. It is provided here that the heating module (1) has a main section (2), a secondary section (3) which comprises the catalytic burner (12, 14), and a device (4, 5) for controlling the exhaust-gas mass flow flowing through the secondary section (3). In a first embodiment, the main section (2) has, in the inlet region of the heating module (1), an overflow pipe portion (6) which has overflow openings (7), between which overflow diverting chambers (8) is simulated, parallel to the main section (2) of the heating module (1), the secondary section portion (11) with the oxidation catalytic converter (12).Type: ApplicationFiled: March 26, 2012Publication date: January 16, 2014Applicant: HJS EMISSION TECHNOLOGY GMBH & CO. KGInventors: Bettina Baier, Bernd Maurer, Klaus Schrewe, Frank Noack, Thomas Kästner
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Publication number: 20140000241Abstract: The invention relates to a method for feeding thermal energy into an exhaust emission control unit (2) connected in The exhaust gas system of an internal combustion engine by heating the exhaust has flowing to the exhaust emission control unit (2). Said exhaust has is heated to a SET temperature by converting hydrocarbons (HCs) metered into the exhaust has flow at two oxidation catalytic Converters (7, 10) series-connected in the flow direction of the exhaust gas.Type: ApplicationFiled: March 26, 2012Publication date: January 2, 2014Applicant: HJS EMISSION TECHNOLOGY GmbH & Co. KGInventors: Bettina Baier, Bernd Maurer, Klaus Schrewe, Frank Noack
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Publication number: 20060153748Abstract: Exhaust gas aftertreatment system, especially for a diesel engine. The invention proposes an exhaust gas aftertreatment system having an exhaust gas particulate filter (3), a nitrogen oxide reduction catalytic converter (7, 8) connected downstream of the exhaust gas particulate filter, and an apparatus (17) for adding reducing agent. As claimed in the invention, the exhaust gas particulate filter (3) is designed as a porous cylindrical filter body having a substantially radial exhaust gas inflow direction into the filter body, a filter inner region (26) for filtered exhaust gas, and an axial exhaust gas outflow direction out of the filter inner region (26), and reducing agent is added into the filter inner region (26) via the apparatus (17) for adding reducing agent. Use in motor vehicles, in particular in commercial vehicles.Type: ApplicationFiled: October 2, 2003Publication date: July 13, 2006Inventors: Georg Huthwohl, Bernd Maurer
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Patent number: 6935103Abstract: A device for exhaust-gas purification utilizes reduction of nitrogen oxides which are present in the exhaust gas from internal combustion engines by way of gaseous ammonia with an SCR catalytic converter. The functions of the device are monitored with regard to their line paths with connections, valves and sensors by referring to these elements themselves using suitable control circuitry via the evaluation and control unit.Type: GrantFiled: February 25, 2003Date of Patent: August 30, 2005Assignees: DaimlerChrysler AG, PURem Abgassysteme GmbH & Co. KGInventors: Klaus Binder, Peter Ebel, Gerhard Fraenkle, Alexander Funk, Klaus-Juergen Marquardt, Ansgar Schaefer, Georg Huthwohl, Bernd Maurer
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Patent number: 6923941Abstract: A filter assembly for an exhaust gas purification system of an internal combustion engine. The filter assembly, has porous filter plate elements, connected with each other on their outer as well as on their inner peripheries, forming in pairs as filter pockets. Catalytic agents such as ammonia are applied to the filter pockets on the outer and/or inner sides to oxidize carbon black contained in the combustion gas. In particular, this filter assembly is compact and can be used for diesel engines of motor vehicles.Type: GrantFiled: July 19, 2001Date of Patent: August 2, 2005Assignee: PUReM Abgassysteme GmbH & Co. KGInventors: Georg Huthwohl, Bernd Maurer, Bernd Krutzsch, Günter Wenninger
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Patent number: 6845611Abstract: A reducing agent dosing device for delivering a reducing agent into the exhaust gas system 8 of the internal combustion engine 2 of a motor vehicle, comprising a reducing agent tank 3 connected to the exhaust gas system 8 via a supply line 5, 7 with a dosing valve 6 for delivering a specific quantity of reducing agent. The dosing valve 6 is disposed at a distance from the exhaust gas system 8 in the supply line 5, 7 and the output of the dosing valve 6 terminates in a mixing chamber 7. Compressed air, provided by the charge air of a charging group 10 of the internal combustion engine 2, flows though the mixing chamber in the direction toward the exhaust gas system 8 to mix the reducing agent output with an air stream.Type: GrantFiled: December 2, 2002Date of Patent: January 25, 2005Assignee: PUReM Abgassysteme GmbH & Co. KGInventors: Georg Huthwohl, Bernd Maurer, Frank Noack
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Patent number: 6739124Abstract: An exhaust gas purification system for denoxing exhaust gases of a combustion unit on an SCR catalyst 2 utilizing ammonia (NH3) additionally introduced into the exhaust gas flow before the SCR catalyst 2, which has at least one reducing agent container 4, in which the NH3 (5) to be supplied to the exhaust gas flow is stored, which container 4 is connected via a supply line 7 with the exhaust gas line 1, and is adapted so that at least one reducing agent container 4 is held in a docking device 15 as a portion of the exhaust gas purification system 3 and, via a coupling 20, 21, is connected with the supply line 7. Of coupling 20, 22 one coupling part 22 is associated with the docking device 15 and the other coupling part 20 with the container 4, so that both coupling parts 20, 22 can be engaged with one another via an axial movement directed toward one another.Type: GrantFiled: December 18, 2001Date of Patent: May 25, 2004Assignee: PUReM Abgassystem GmbH & Co. KGInventors: Georg Huthwohl, Bernd Maurer, Alexander Funk
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Publication number: 20040031263Abstract: A device for exhaust-gas purification utilizes reduction of nitrogen oxides which are present in the exhaust gas from internal combustion engines by way of gaseous ammonia with an SCR catalytic converter. The functions of the device are monitored with regard to their line paths with connections, valves and sensors by referring to these elements themselves using suitable control circuitry via the evaluation and control unit.Type: ApplicationFiled: February 25, 2003Publication date: February 19, 2004Inventors: Klaus Binder, Peter Ebel, Gerhard Fraenkle, Alexander Funk, Klaus-Juergen Marquardt, Ansgar Schaefer, Georg Huethwohl, Bernd Maurer
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Patent number: 6613292Abstract: A converter for a device for supplying ammonia (NH3) into the exhaust gas flow of a combustion engine comprising a pressure-tight reaction vessel 2 for generating NH3 by heating a substance thermolytically separating NH3 under the effect of heat, and a heating unit 10 for heating the reaction vessel 2 to the operating temperature for generating the NH3, is defined thereby that the reaction vessel 2 usefully comprises in the region of its bottom an outlet 4 provided with connection means and an inlet 3, spaced apart from the outlet 4, also provided with connection means, with which connection means the interior of the reaction vessel 2 is connectable to a filling and withdrawal unit 13 for drawing off a carrier medium disposed in the reaction vessel 2, and for filling the reaction vessel 2 with new substance thermolytically separating NH3 transported by the carrier medium.Type: GrantFiled: March 17, 2000Date of Patent: September 2, 2003Assignee: HJS Fahrzeugtechnik GmbH & Co.Inventors: Georg Hüthwohl, Bernd Maurer
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Publication number: 20030101714Abstract: A reducing agent dosing device for delivering a reducing agent into the exhaust gas system 8 of the internal combustion engine 2 of a motor vehicle, comprising a reducing agent tank 3 connected to the exhaust gas system 8 via a supply line 5, 7 with a dosing valve 6 for delivering a specific quantity of reducing agent. The dosing valve 6 is disposed at a distance from the exhaust gas system 8 in the supply line 5, 7 and the output of the dosing valve 6 terminates in a mixing chamber 7. Compressed air, provided by the charge air of a charging group 10 of the internal combustion engine 2, flows though the mixing chamber in the direction toward the exhaust gas system 8 to mix the reducing agent output with an air stream.Type: ApplicationFiled: December 2, 2002Publication date: June 5, 2003Inventors: Georg Huthwohl, Bernd Maurer, Frank Noack
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Publication number: 20030068255Abstract: A device for dosing a gaseous reducing agent for the supply into the exhaust gas system of a diesel engine, comprising a line terminating in the exhaust gas system, in which in the supply direction of the reducing agent are connected a vaporizer, a pressure reducer as well as a dosing valve, and a buffer container is provided connected in the supply line and preceding the pressure reducer.Type: ApplicationFiled: October 7, 2002Publication date: April 10, 2003Inventors: Bernd Maurer, Georg Huthwohl
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Publication number: 20020134074Abstract: An exhaust gas purification system for denoxing exhaust gases of a combustion unit on an SCR catalyst 2 utilizing ammonia (NH3) additionally introduced into the exhaust gas flow before the SCR catalyst 2, comprising at least one reducing agent container 4, in which the NH3 (5) to be supplied to the exhaust gas flow is stored, which container 4 is connected via a supply line 7 with the exhaust gas line 1, and is adapted so that at least one reducing agent container 4 is held in a docking device 15 as a portion of the exhaust gas purification system 3 and, via coupling means 20, 21, is connected with the supply line 7. Of coupling 20, 22 one coupling part 22 is associated with the docking device 15 and the other coupling part 20 with the container 4, so that both coupling parts 20, 22 can be engaged with one another via an axial movement directed toward one another.Type: ApplicationFiled: December 18, 2001Publication date: September 26, 2002Inventors: Georg Huthwohl, Bernd Maurer, Alexander Funk
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Publication number: 20020021988Abstract: A filter assembly for an exhaust gas purification system of an internal combustion engine. The filter assembly, has porous filter plate elements, connected with each other on their outer as well as on their inner peripheries, forming in pairs as filter pockets. Catalytic agents such as ammonia are applied to the filter pockets on the outer and/or inner sides to oxidize carbon black contained in the combustion gas. In particular, this filter assembly is compact and can be used for diesel engines of motor vehicles.Type: ApplicationFiled: July 19, 2001Publication date: February 21, 2002Applicant: PUReM Abgassysteme GmbH & Co. KGInventors: Georg Huthwohl, Bernd Maurer, Bernd Krutzsch, Gunter Wenninger
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Patent number: 6301879Abstract: An exhaust gas purification system for denoxing exhaust gases has a converter containing a substance thermolytically separable into NH3, a feed line connecting the converter with an exhaust gas line for supplying NH3 into the exhaust gas flow therein, a dosing device in the feed line for dosing the NH3 to be introduced into the exhaust gas flow, a heatable cold-start store connected to the feed line between the converter and dosing device for providing the substance during starting of a combustion unit connected to the exhaust gas line, an air feeding device having two air conduits provided with valves wherein one conduit is connected to the feed line between the cold-start store and dosing device and the other conduit is connected to a mixing chamber located in the feed line after the dosing device, and a reservoir container for storing the substance connected to a filling pipe terminating in the converter.Type: GrantFiled: February 22, 2000Date of Patent: October 16, 2001Assignee: HJS Fahrzeugtechnik GmbH & Co.Inventors: Werner Weisweiler, Georg Huthwohl, Bernd Maurer