Patents Assigned to Magnet-Motor Gesellschaft fuer
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Publication number: 20100300782Abstract: An electric drive unit for a motor vehicle includes an electric motor having a stator that is fixed with respect to a stub axle and a rotor that is rotatably supported with respect to the stub axle. A gear system has its input connected to the rotor for torque transmission. A wheel carrier is connected to the output of the gear system for torque transmission. A first bearing of the wheel carrier is provide on a first axial side of the electric motor facing away from the gear system. A second bearing of the wheel carrier is provided either on the first axial side of the electric motor, or in the gear system, realized in the form of a bearing of a rotatable gear system part connected to the wheel carrier.Type: ApplicationFiled: March 2, 2010Publication date: December 2, 2010Applicant: Magnet-Motor Gesellschaft fuer magnetmotorische Technik mbHInventors: Fritz Walter, Andreas Heiland, Fritz Deibel, Peter Ehrhart
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Patent number: 7315099Abstract: An electric drive unit for a motor vehicle, comprising: (a) a stub axle; (b) an electric motor having a stator that is fixed with respect to the stub axle and having a rotor that is rotatably supported with respect to the stub axle; (c) a gear system having its input connected to the rotor for torque transmission; (d) a wheel carrier that is rotatably supported with respect to the stub axle and is connected to the output of the gear system for torque transmission; characterized in (e) that air cooling with air circulation is provided for cooling the rotor of the electric motor; (f) and in that the electric motor has provided therein a heat sink for taking up heat from the circulating air.Type: GrantFiled: January 28, 2005Date of Patent: January 1, 2008Assignee: Magnet-Motor Gesellschaft fuer mangnetmotorische Technik mbHInventors: Jens Steffen, Roland Hagenlocher, Fritz Walter, Anton Müller, Peter Ehrhart
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Publication number: 20070257570Abstract: An electric drive unit for a motor vehicle includes an electric motor having a stator that is fixed with respect to a stub axle and a rotor that is rotatably supported with respect to the stub axle. A gear system has its input connected to the rotor for torque transmission. A wheel carrier is connected to the output of the gear system for torque transmission. A first bearing of the wheel carrier is provide on a first axial side of the electric motor facing away from the gear system. A second bearing of the wheel carrier is provided either on the first axial side of the electric motor, or in the gear system, realized in the form of a bearing of a rotatable gear system part connected to the wheel carrier.Type: ApplicationFiled: August 17, 2004Publication date: November 8, 2007Applicant: Magnet-Motor Gesellschaft fuer magnetmotorische TeInventors: Fritz Walter, Andreas Heiland, Fritz Deibel, Peter Ehrhart
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Patent number: 7214155Abstract: An electric drive unit for a motor vehicle comprises an electric motor having a motor housing, a stator mounted in the motor housing and having coil-wound poles, a rotor arranged internally of the stator with an air gap present between the stator and the rotor, and a planetary gear system having a sun wheel, a planet carrier, planet wheels and a ring gear. The planet wheels have a maximum diameter and axial positioning that an imaginary common envelope cylinder for all maximum diameters of the planet wheels is located radially inside of the winding heads present on one axial side of the stator and axially beside the portion of the rotor adjoining the air gap and that the planet wheels project in axial direction outwardly beyond said winding heads either not at all or with less than 50% of their tooth width in engagement with the sun wheel.Type: GrantFiled: January 28, 2005Date of Patent: May 8, 2007Assignee: Magnet-Motor Gesellschaft fuer magnetmotorische Technik mbHInventors: Anton Mueller, Fritz Walter, Peter Ehrhart, Jens Steffen
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Publication number: 20050245341Abstract: An electric drive unit for a motor vehicle comprises an electric motor having a motor housing, a stator mounted in the motor housing and having coil-wound poles, a rotor arranged internally of the stator with an air gap present between the stator and the rotor, and a planetary gear system having a sun wheel, a planet carrier, planet wheels and a ring gear. The planet wheels have a maximum diameter and axial positioning that an imaginary common envelope cylinder for all maximum diameters of the planet wheels is located radially inside of the winding heads present on one axial side of the stator and axially beside the portion of the rotor adjoining the air gap and that the planet wheels project in axial direction outwardly beyond said winding heads either not at all or with less than 50% of their tooth width in engagement with the sun wheel.Type: ApplicationFiled: January 28, 2005Publication date: November 3, 2005Applicant: Magnet-Motor Gesellschaft fuer magnetmotorische Technik mbHInventors: Anton Mueller, Fritz Walter, Peter Ehrhart, Jens Steffen
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Publication number: 20050206250Abstract: An electric drive unit for a motor vehicle, comprising: (a) a stub axle; (b) an electric motor having a stator that is fixed with respect to the stub axle and having a rotor that is rotatably supported with respect to the stub axle; (c) a gear system having its input connected to the rotor for torque transmission; (d) a wheel carrier that is rotatably supported with respect to the stub axle and is connected to the output of the gear system for torque transmission; characterized in (e) that air cooling with air circulation is provided for cooling the rotor of the electric motor; (f) and in that the electric motor has provided therein a heat sink for taking up heat from the circulating air.Type: ApplicationFiled: January 28, 2005Publication date: September 22, 2005Applicant: Magnet-Motor Gesellschaft fuerInventors: Jens Steffen, Roland Hagenlocher, Fritz Walter, Anton Muller, Peter Ehrhart
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Patent number: 6451470Abstract: Gas diffusion electrodes (1) for polymer electrolyte membrane fuel cells are modified such that the diffusion of water therein is inhibited in comparison with un-modified electrodes. Polymer electrolyte membrane fuel cells with the modified gas diffusion electrodes can be operated, with on the average unchanged operating conditions, without addition of water, since the gas diffusion electrodes do not allow more water to escape than that formed during the reaction of burnable gas and oxidizing agent, and guarantee sufficient membrane moisture.Type: GrantFiled: January 10, 2000Date of Patent: September 17, 2002Assignee: Magnet-Motor Gesellschaft für Magnetmotorische Technik mbHInventors: Arthur Koschany, Christian Lucas, Thomas Schwesinger
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Patent number: 6384504Abstract: An electric machine comprising a stator and a rotor (2) separated by an air gap (12), (a) the rotor (2) being composed with permanent magnets (8) magnetized substantially in circumferential direction, and with one magnetic flux conducting piece assembly (10) of at least one magnetic flux conducting piece (10a; 10b) between two adjacent permanent magnets each; (b) the permanent magnets (8)—when looking at the overall geometry—each having an increasing circumferential width from the head portion on the side of the air gap to the foot portion; (c) and the conducting piece assemblies (10) between two adjacent permanent magnets (8)—when looking at the overall geometry—each having a decreasing circumferential width from the head portion on the side of the air gap to the foot portion, characterized in (d) that the conducting pieces (10a; 10b) at the foot end each have a widened portion in circumferential direction, having at least one shoulder (20) through which they are supported on an aType: GrantFiled: February 28, 2000Date of Patent: May 7, 2002Assignee: Magnet-Motor Gesellschaft für magnetmotorische Technik mbHInventors: Peter Ehrhart, Gerhard Reiner, Ludwig Lindner, Christian Lucas, Fritz Walter
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Patent number: 6376110Abstract: Fuel cell stack and method of regulating membrane moisture of polymer electrolyte membranes of fuel cells of the fuel cell stack includes ascertaining electronically an average value of an electrical value corresponding to moisture of the polymer electrolyte membranes of a number of fuel cells of the fuel cell stack without utilization of an auxiliary electrode, the number of fuel cells ranging from two fuel cells to all fuel cells of the fuel cell stack; and adjusting the moisture of the polymer electrolyte membranes of the number of fuel cells to an optimum moisture as a function of the average value ascertained.Type: GrantFiled: March 3, 2000Date of Patent: April 23, 2002Assignee: Magnet-Motor Gesellschaft für magnetmotorische Technik mbHInventor: Arthur Koschany
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Patent number: 6278196Abstract: A motor vehicle with a combustion engine (2), a transmission (8) and a mechanical drive line (6) comprises a coaxially disposed electric generator (10) for providing power to electric loads, said generator being coupled directly with the crankshaft (4) of the combustion engine. The rotor of the generator serves as a flywheel in particular when the generator is designed in outside rotor construction. Stator and rotor of the generator are each formed as hollow cylinders and have a small axial length in comparison to the mounting diameter of the generator. The generator can also be used as a starter motor when operated as a motor. An additional possibility of application is for damping the torsional vibration of the crankshaft of the combustion engine, the transmission and the mechanical drive line.Type: GrantFiled: December 14, 1998Date of Patent: August 21, 2001Assignee: Magnet-Motor Gesellschaft fuer Magnet-Motorische T{overscore (e)}chnik mbHInventors: Peter Ehrhart, Manfred Heeg
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Patent number: 6262891Abstract: A component carrier (2) with electric components (4) mounted thereon, having at least one channel (14) for cooling liquid, characterized in that the component carrier (2) has an air cooling body (6), and a fan (8) is associated with the component carrier (2) for producing a forced air stream for air cooling at least part of the components (4) and for air recooling on the air cooling body (6).Type: GrantFiled: June 21, 1999Date of Patent: July 17, 2001Assignee: Magnet-Motor Gesellschaft für Magnetmotorische Technik mbHInventors: Peter Wickelmaier, Suavi Örey, Peter Enrhart