Patents by Inventor Axel Heitmann
Axel Heitmann 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: 10855128Abstract: Described is a method for producing a stator, in particular for electric motors. In a first step, a plurality of flexible electrical conductors are combined to form a conductor bundle. In a second step, two end regions of the conductor bundle are pressed in such a way that a central region of the conductor bundle formed between the two end regions remains flexible. Also described is a corresponding stator.Type: GrantFiled: December 18, 2017Date of Patent: December 1, 2020Inventors: Johannes Lange, Tobias Engelhardt, Stefan Schmitz, Axel Heitmann, Jan Nägelkrämer, Stefan Oechslen, Daniel Knoblauch, Wolfgang Thaler, Stefan Heinz
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Patent number: 10742100Abstract: A coil segment, in particular for a stator coil, wherein the coil segment has a conductor bundle, wherein the conductor bundle has a multiplicity of electrical conductors, wherein the conductor bundle has a form fit, wherein the conductor bundle has at least one cutout for feeding coolant. Furthermore, a method for manufacturing a stator coil, a stator coil having a coil segment according to the present invention, a machine having a stator coil according to the present invention, and a vehicle having a machine according to the present invention.Type: GrantFiled: February 14, 2018Date of Patent: August 11, 2020Assignee: Dr. Ing. h.c. F. Porsche AktiengesellschaftInventors: Johannes Lange, Axel Heitmann, Tobias Engelhardt, Jan Nägelkrämer, Stefan Oechslen, Stefan Schmitz
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Patent number: 10707793Abstract: A method for operating a synchronous machine having a rotor, comprising the following features: the synchronous machine is modelled, with respect to the rotor, as a two-phase system with a direct-axis current and a quadrature-axis current, rotor losses of the synchronous machine, which rotor losses occur in the rotor, are numerically described by an evaluation function of the first direct-axis current, of the quadrature-axis current and of a specified rotation speed of the synchronous machine, and, on the basis of the evaluation function, the direct-axis current and the second quadrature-axis current are controlled for the specified rotation speed and a required torque in such a way that the synchronous machine outputs the required torque and the rotor losses are low and a corresponding synchronous machine, a corresponding computer program and a corresponding storage medium.Type: GrantFiled: May 15, 2018Date of Patent: July 7, 2020Assignee: Dr. Ing. h.c. F. Porsche AktiengesellschaftInventors: Jan Nägelkrämer, Axel Heitmann, Thomas Hubert, Sven Luthardt, Stefan Schmitz
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Publication number: 20190356254Abstract: A method for operating a synchronous machine having a rotor, comprising the following features: the synchronous machine is modelled, with respect to the rotor, as a two-phase system with a direct-axis current and a quadrature-axis current, rotor losses of the synchronous machine, which rotor losses occur in the rotor, are numerically described by an evaluation function of the first direct-axis current, of the quadrature-axis current and of a specified rotation speed of the synchronous machine, and, on the basis of the evaluation function, the direct-axis current and the second quadrature-axis current are controlled for the specified rotation speed and a required torque in such a way that the synchronous machine outputs the required torque and the rotor losses are low and a corresponding synchronous machine, a corresponding computer program and a corresponding storage medium.Type: ApplicationFiled: May 15, 2018Publication date: November 21, 2019Applicant: Dr. Ing. h.c. F. Porsche AktiengesellschaftInventors: Jan Nägelkrämer, Axel HEITMANN, Thomas HUBERT, Sven LUTHARDT, Stefan SCHMITZ
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Patent number: 10288155Abstract: A dual clutch transmission as a speed-change transmission for motor vehicles, includes two coaxially arranged input shafts, each being activatable via a clutch, an output shaft and gearwheel sets that are mounted on the shafts and can be shifted by means of shifting clutches to allow a plurality of forward gears and a reverse gear, the gearwheel sets being subdivided into a sub-transmission having the one input shaft and a sub-transmission having the other input shaft. To achieve a wider gear-ratio spread in a structurally compact construction, a shifting unit that can be shifted between two gear ratio stages is mounted upstream of the sub-transmission having the hollow input shaft.Type: GrantFiled: October 23, 2013Date of Patent: May 14, 2019Assignee: Audi AGInventors: Johann Märkl, Axel Heitmann, Steffen Hummel, Frank Vollmer
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Patent number: 10190665Abstract: A drive system for a vehicle has a drive motor and an axle. A driving torque generated by the drive motor is transmitted via a gear chain and a planetary transmission to the axle. The drive system can be assembled modularly, and wherein the planetary transmission is coordinated with the drive motor to determine an overall transmission ratio.Type: GrantFiled: June 24, 2015Date of Patent: January 29, 2019Assignee: Dr. Ing. h.c.F. Porsche AktiengesellschaftInventors: Falk Heilfort, Axel Heitmann, Wael Mohamed
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Publication number: 20180233998Abstract: A coil segment, in particular for a stator coil, wherein the coil segment has a conductor bundle, wherein the conductor bundle has a multiplicity of electrical conductors, wherein the conductor bundle has a form fit, wherein the conductor bundle has at least one cutout for feeding coolant. Furthermore, a method for manufacturing a stator coil, a stator coil having a coil segment according to the present invention, a machine having a stator coil according to the present invention, and a vehicle having a machine according to the present invention.Type: ApplicationFiled: February 14, 2018Publication date: August 16, 2018Applicant: Dr. Ing. h.c. F. Porsche AktiengesellschaftInventors: Johannes LANGE, Axel HEITMANN, Tobias ENGELHARDT, Jan NÄGELKRÄMER, Stefan OECHSLEN, Stefan SCHMITZ
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Publication number: 20180175690Abstract: Described is a method for producing a stator, in particular for electric motors. In a first step, a plurality of flexible electrical conductors are combined to form a conductor bundle. In a second step, two end regions of the conductor bundle are pressed in such a way that a central region of the conductor bundle formed between the two end regions remains flexible. Also described is a corresponding stator.Type: ApplicationFiled: December 18, 2017Publication date: June 21, 2018Applicant: Dr. Ing. h.c. F. Porsche AktiengesellschaftInventors: Johannes Lange, Tobias Engelhardt, Stefan Schmitz, Axel Heitmann, Jan Nägelkrämer, Stefan Oechslen, Daniel Knoblauch, Wolfgang Thaler, Stefan Heinz
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Patent number: 9714698Abstract: A shifting device for a dual clutch transmission as a speed-change transmission for motor vehicles, including two coaxially arranged input shafts, each being activatable via a clutch, an axially parallel output shaft and gearwheel sets that are mounted on the shafts and can be shifted by means of shifting clutches to allow a plurality of forward gears and a reverse gear, the gearwheel sets being subdivided into a sub-transmission having the one input shaft and a sub-transmission having the other input shaft. To achieve a wider gear-ratio spread in a structurally compact construction, a planetary gear train that can be shifted between two gear ratio stages is mounted upstream of the sub-transmission having the hollow input shaft.Type: GrantFiled: October 23, 2013Date of Patent: July 25, 2017Assignee: AUDI AGInventors: Johann Märkl, Axel Heitmann, Steffen Hummel, Frank Vollmer, Alexander Schmidt
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Patent number: 9533562Abstract: A drive device for a change-speed transmission for motor vehicles, has at least one transmission input shaft, at least one axially parallel output shaft, having a plurality of gearwheel sets which are arranged on the shafts with fixed gearwheels and idler gears which can be switched via synchronizer clutches in order to form forward gears, and having at least one separating clutch. A planetary transmission which can be switched over into two transmission stages is connected upstream of the gearwheel sets of the forward gears, which planetary transmission has a driven input element, an output element which outputs to the input shaft, and a transmission element which can be braked or coupled in order to switch over the transmission stages, wherein the transmission element can be coupled to an electric machine, by means of which the transmission element can be fixed or can be driven in both rotational directions.Type: GrantFiled: October 23, 2013Date of Patent: January 3, 2017Assignee: AUDI AGInventors: Johann Märkl, Axel Heitmann
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Publication number: 20160003333Abstract: A drive system for a vehicle has a drive motor and an axle. A driving torque generated by the drive motor is transmitted via a gear chain and a planetary transmission to the axle. The drive system can be assembled modularly, and wherein the planetary transmission is coordinated with the drive motor to determine an overall transmission ratio.Type: ApplicationFiled: June 24, 2015Publication date: January 7, 2016Inventors: Falk Heilfort, Axel Heitmann, Wael Mohamed
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Publication number: 20150298536Abstract: A drive device for a change-speed transmission for motor vehicles, has at least one transmission input shaft, at least one axially parallel output shaft, having a plurality of gearwheel sets which are arranged on the shafts with fixed gearwheels and idler gears which can be switched via synchronizer clutches in order to form forward gears, and having at least one separating clutch. A planetary transmission which can be switched over into two transmission stages is connected upstream of the gearwheel sets of the forward gears, which planetary transmission has a driven input element, an output element which outputs to the input shaft, and a transmission element which can be braked or coupled in order to switch over the transmission stages, wherein the transmission element can be coupled to an electric machine, by means of which the transmission element can be fixed or can be driven in both rotational directions.Type: ApplicationFiled: October 23, 2013Publication date: October 22, 2015Applicant: Audi AGInventors: JOHANN MÄRKL, AXEL HEITMANN
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Publication number: 20150300470Abstract: A dual clutch transmission as a speed-change transmission for motor vehicles, includes two coaxially arranged input shafts, each being activatable via a clutch, an output shaft and gearwheel sets that are mounted on the shafts and can be shifted by means of shifting clutches to allow a plurality of forward gears and a reverse gear, the gearwheel sets being subdivided into a sub-transmission having the one input shaft and a sub-transmission having the other input shaft. To achieve a wider gear-ratio spread in a structurally compact construction, a shifting unit that can be shifted between two gear ratio stages is mounted upstream of the sub-transmission having the hollow input shaft.Type: ApplicationFiled: October 23, 2013Publication date: October 22, 2015Applicant: AUDI AGInventors: JOHANN MÄRKL, AXEL HEITMANN, STEFFEN HUMMEL, FRANK VOLLMER
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Publication number: 20150285353Abstract: A shifting device for a dual clutch transmission as a speed-change transmission for motor vehicles, including two coaxially arranged input shafts, each being activatable via a clutch, an axially parallel output shaft and gearwheel sets that are mounted on the shafts and can be shifted by means of shifting clutches to allow a plurality of forward gears and a reverse gear, the gearwheel sets being subdivided into a sub-transmission having the one input shaft and a sub-transmission having the other input shaft. To achieve a wider gear-ratio spread in a structurally compact construction, a planetary gear train that can be shifted between two gear ratio stages is mounted upstream of the sub-transmission having the hollow input shaft.Type: ApplicationFiled: October 23, 2013Publication date: October 8, 2015Applicant: AUDI AGInventors: Johann Märkl, Axel Heitmann, Steffen Hummel, Frank Vollmer, Alexander Schmidt
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Patent number: 7479720Abstract: A seal of an electric machine installed within a motor vehicle drive mechanism with of one of a wet-running oil-cooled disk gearshift element, a multiple disk clutch and a multiple disk brake being accommodated within a free space of a rotor of the electric machine. An oil free annular gap (3) is formed between the rotor (2) and the stator (1) of the electric machine and the annular gap (3) has a seal (9) which, at a high rate of rotation by the rotor (2) and depending on the type of gap seal, seals without touching.Type: GrantFiled: May 18, 2004Date of Patent: January 20, 2009Assignee: ZF Friedrichshafen AGInventors: Matthias Reisch, Maik Würthner, Axel Heitmann, Stefan Kilian
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Publication number: 20080227592Abstract: A method for starting an internal combustion engine in a parallel hybrid drive train of a motor vehicle. The drive train comprises an automatic transmission (1) providing a drive shaft (2) connected to an internal combustion engine, one output shaft (3) connected to one driving axle of the motor vehicle, a mechanical transmission (4) encompassing a first and second planetary gearset (5, 6), several clutches and brakes, and an electric machine (14) used as a starter/generator and/or for continuously adjusting the transmission or electrically driving the motor vehicle. The electric machine (14) can be connected to a first and/or a second shaft of the first planetary gearset by two clutches so that the internal combustion engine can be started by actuating one of the two clutches when the vehicle is driven exclusively in the electric mode and the other clutch is engaged.Type: ApplicationFiled: September 16, 2005Publication date: September 18, 2008Applicant: ZF Friedrichshafen AGInventors: Oliver Steffen, Axel Heitmann
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Patent number: 7364523Abstract: A transmission (1) comprises a gear input shaft (2), a gear output shaft (3), several shift elements (7, 8, 9, 10, 11, 12, 13, 19), at least one planetary gearset (5) and an electrical machine (14). A required gear ratio can be adjusted as a function of the activation of the shift elements (7 to 13, 19) and the electrical machine (14). The electrical machine (14) can be linked to a first shaft (21) of the first planetary gearset (5) by way of a first shift element (12) and to a second shaft (18) of the first planetary gearset (5) by way of a second shift element (13). At least the first shift element (12) or the second shift element (13) is disposed in the axial direction of the gear input shaft (2) adjacent to the electrical machine (14).Type: GrantFiled: January 9, 2006Date of Patent: April 29, 2008Assignee: ZF Friedrichshafen AGInventors: Axel Heitmann, Stefan Kilian, Oliver Steffen
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Patent number: 7244208Abstract: A drive train (1, 30) for a hybrid vehicle, in which an internal combustion engine (2) is drive-technologically connected to a disengagement clutch (4) whose output side is connected to a transmission input shaft (7), which is connected to an input element (8, 38) of an automatic transmission (17, 36), and in which the transmission input shaft (7) can be driven by an electric machine (5) and itself drives a hydraulic pump (6), which is drive-technologically arranged after the disengagement clutch (4) and before a shiftable starting element (F) of the automatic transmission (17, 36).Type: GrantFiled: September 23, 2004Date of Patent: July 17, 2007Assignee: ZF Friedrichshafen AGInventors: Gert Bauknecht, Reinhard Mertinkat, Axel Heitmann
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Publication number: 20060244325Abstract: A relatively abrasion-free seal for an electric motor that is inserted within the motor vehicle drive mechanism (6) to an electric motor rotor located within the free construction space (4) of the wet-running electric machine rotor (2) or oil-cooled gearshift element of a multiple disk clutch (5) with which the very highest possible degree of an oil free annular gap (3) between the rotor (2) and the stator (1) of an electric machine is provided essentially in that the face side of the annular gap (3) is designed to have a seal (9) which, at a high rate of revolutions by the rotor (2) and depending on the type of gap seal, has been built to seal without touching.Type: ApplicationFiled: May 18, 2004Publication date: November 2, 2006Inventors: Matthias Reisch, Maik Würthner, Axel Heitmann, Stefan Kilian
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Publication number: 20060194665Abstract: A transmission (1) comprises a gear input shaft (2), a gear output shaft (3), several shift elements (7, 8, 9, 10, 11, 12, 13, 19), at least one planetary gearset (5) and an electrical machine (14). A required gear ratio can be adjusted as a function of the activation of the shift elements (7 to 13, 19) and the electrical machine (14). The electrical machine (14) can be linked to a first shaft (21) of the first planetary gearset (5) by way of a first shift element (12) and to a second shaft (18) of the first planetary gearset (5) by way of a second shift element (13). At least the first shift element (12) or the second shift element (13) is disposed in the axial direction of the gear input shaft (2) adjacent to the electrical machine (14).Type: ApplicationFiled: January 9, 2006Publication date: August 31, 2006Inventors: Axel Heitmann, Stefan Kilian, Oliver Steffen