Patents by Inventor Hans-Jorg Domian
Hans-Jorg Domian 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: 7703348Abstract: A device (1) is described for controlling and/or regulating a hydraulically activatable shifting element. The shifting element (2) is configured with a piston-cylinder unit (3) that can be acted upon by a hydraulic operating pressure (p) and can be arranged in an installation space that is connected to an oil sump of the gearing mechanism device. In addition, the device (1) is provided with an electric motor (5) that can be actuated by a control and/or regulator unit (4), and which is provided with a drive-transformer device (6) that has a functional connection to the electric motor (5), by way of which the rotational drive of the electric motor (5) can be transformed into the hydraulic operating pressure (p) for the shifting element (2).Type: GrantFiled: December 8, 2006Date of Patent: April 27, 2010Assignee: ZF Friedrichshafen AGInventors: Matthias Reisch, Martin Grumbach, Hans-Jörg Domian
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Publication number: 20070135258Abstract: A device (1) is described for controlling and/or regulating a hydraulically activatable shifting element. The shifting element (2) is configured with a piston-cylinder unit (3) that can be acted upon by a hydraulic operating pressure (p) and can be arranged in an installation space that is connected to an oil sump of the gearing mechanism device. In addition, the device (1) is provided with an electric motor (5) that can be actuated by a control and/or regulator unit (4), and which is provided with a drive-transformer device (6) that has a functional connection to the electric motor (5), by way of which the rotational drive of the electric motor (5) can be transformed into the hydraulic operating pressure (p) for the shifting element (2).Type: ApplicationFiled: December 8, 2006Publication date: June 14, 2007Applicant: ZF Friedrichshafen AGInventors: Matthias Reisch, Martin Grumbach, Hans-Jorg Domian
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Patent number: 6705416Abstract: A hybrid drive for a motor vehicle which possesses, in a gear train (1), a first electrical machine (4) located between an internal combustion motor (2) and a multi-gear vehicle transmission (3). The hybrid drive further possesses a second electrical machine (6) permanently connected with an input shaft (5) of the transmission. First and second clutches (7, 8), respectively, are placed between the first and second electrical machines (4, 6) and the internal combustion motor (2) and the first and second electrical machines (4, 6) can be respectively driven as either a motor or a generator.Type: GrantFiled: October 17, 2001Date of Patent: March 16, 2004Assignee: ZF Friedrichshafen KGInventors: Hans Glonner, Bernhard Sich, Gerhard Gumpoltsberger, Hans-Jörg Domian, Ralf Dreibholz, Markus Kaindl, Jörg Michael
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Patent number: 6597978Abstract: A method is proposed for controlling an automatic transmission driven by a prime mover in which a shift from a first transmission ratio to a second transmission ratio occurs in the form of a pull upshift or push downshift or a pull downshift or push upshift by a first clutch opening and a second clutch closing and an electronic transmission control device controls, via electromagnetic valves, the pressure curve of the first and of the second clutch during the shifting operation. The shifting operation is divided into various shifting phases, an engine intervention taking place in the load-transfer (LÜ) of the gradient-setting phase (GE), the sliding phase (GL), the gradient-reduction phase (GA) and the closing phase (S), an engine torque and/or a characteristic value that determines the engine torque being transferred from the transmission control device to an engine control device of the prime mover.Type: GrantFiled: May 24, 2001Date of Patent: July 22, 2003Assignee: ZF Friedrichshafen AGInventors: Ralf Dreibholz, Hans-Jörg Domian
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Patent number: 6572507Abstract: The invention concerns a transmission (1) with automatic shifting capabilities and with three spider supported planetary sets (2, 3, 4), three brakes (5, 6, 7), and two clutches (8, 9) for the shifting of six forward moving gears and one reverse gear and having an input shaft (10) and an output shaft (11). In this way, the input shaft (10) is in continual connection with the sun gear (16) of the second planetary set (3) and the input shaft (10) is connectable to the sun gear (12) of the first planetary set (2) by means of the first clutch (8) and/or by means of the second clutch (9) is also connectable with the spider (15) of the first planetary set (2). Further, the sun gear (12) of the first planetary set (2) by means of the first brake (5) and or the spider (15) of the first planetary set (2) by means of the second brake (6) and/or the sun gear (20) of the third planetary set (4) by means of the third brake, are all connectable with the housing of the transmission.Type: GrantFiled: September 13, 2001Date of Patent: June 3, 2003Assignee: ZF Friedrichshafen AGInventors: Bülent Korkmaz, Walter Kuhn, Hans-Jörg Domian, Bernhard Drerup, Gerhard Gumpoltsberger
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Patent number: 6244402Abstract: A power shift transmission (3) for motor vehicles in which instead of a hydrodynamic torque converter a controlled or regulated multiple disc clutch serves to assist starting. The loading of clutch is minimized by a fitted catch which prevents the motor vehicle from rolling in the opposite direction to the direction of travel intended by the gear selection. Catch can take the form of a mechanical catch, as sprag unit, or the form of an electronically adjusted catch which acts on one and/or more transmission brakes and/or clutches and/or into the service brake of the vehicle.Type: GrantFiled: December 10, 1998Date of Patent: June 12, 2001Assignee: ZF Friedrichshafen AGInventors: Hans-Jörg Domian, Ralf Dreibholz, Walter Kuhn
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Patent number: 6012345Abstract: The method for changing the gears of a manually shiftable change gear unit for commercial vehicles which has a main gear unit and fitted downstream thereof a combination of splitter gear unit and range gear unit wherein when shifting the individual gear units from the coupling position (1) to the neutral position (0), in time are first shifted the main gear unit, then the splitter gear unit and finally the range gear unit and conversely, when shifting form the neutral position (0) to the coupling position (1), in time first the range gear unit, then the splitter gear unit and finally the main gear unit are shifted.Type: GrantFiled: December 9, 1998Date of Patent: January 11, 2000Assignee: ZF Friedrichshafen AGInventors: Jurgen Wafzig, Hans-Jorg Domian
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Patent number: 5997433Abstract: A transmission control system is proposed for reducing thermal load on engaging elements (2, 3, 4, 5) in a gearbox (1) during the starting operation. The gearbox (1) has an input shaft (7) and an output shaft (9) and at least two engaging elements or clutches (2, 3, 4, 5) each of which is allocated to a gear and comprises a first clutch half (21, 31, 41, 51) which transmits the force coming from the direction of the input shaft (7) onto a second clutch half (22, 32, 42, 52) which in turn transmits the force in the direction of the output shaft (9). Transmission elements (11, 12, 13) and shafts (7, 8, 9, 23, 33, 40, 50) are mounted between the input shaft (7) and a first clutch (2, 3) and/or between the first clutch (2, 3) and a second clutch (4, 5) and/or between the second clutch (4, 5) and a further clutch or the output shaft (9).Type: GrantFiled: June 8, 1998Date of Patent: December 7, 1999Assignee: ZF Friedrichshafen AGInventors: Hans-Jorg Domian, Ralf Dreibholz
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Patent number: 5795265Abstract: A process is proposed for controlling an automatic transmission where changing from one gear speed to another is brought about as a result of a first clutch (11) opening and a second clutch (12) closing. It is further proposed to apply the process to a group transmission.Type: GrantFiled: January 10, 1997Date of Patent: August 18, 1998Assignee: ZF Friedrichshafen AGInventors: Hans-Jorg Domian, Ralf Dreibholz, Gerd Frotscher, Thomas Schober
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Patent number: RE39960Abstract: The invention concerns a transmission (1) with automatic shifting capabilities and with three spider supported planetary sets (2, 3, 4), three brakes (5, 6, 7), and two clutches (8, 9) for the shifting of six forward moving gears and one reverse gear and having an input shaft (10) and an output shaft (11). In this way, the input shaft (10) is in continual connection with the sun gear (16) of the second planetary set (3) and the input shaft (10) is connectable to the sun gear (12) of the first planetary set (2) by means of the first clutch (8) and/or by means of the second clutch (9) is also connectable with the spider (15) of the first planetary set (2). Further, the sun gear (12) of the first planetary set (2) by means of the first brake (5) and or the spider (15) of the first planetary set (2) by means of the second brake (6) and/or the sun gear (20) of the third planetary set (4) by means of the third brake, are all connectable with the housing of the transmission.Type: GrantFiled: March 16, 2000Date of Patent: December 25, 2007Assignee: ZF Friedrichshafen AGInventors: Bülent Korkmaz, Walter Kuhn, Bernhard Drerup, Hans-Jorg Domian, Gerhard Gumpoltsberger