Patents by Inventor Martin-Joachim Bader
Martin-Joachim Bader 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: 10006504Abstract: A method for controlling a hydraulic fluid supply system of an automatic transmission of a motor vehicle includes supplying the hydraulic fluid supply system with hydraulic fluid from at least one of a hydraulic pump controlled on an engine side and a hydraulic pump controlled on a gear set side. The method also includes controlling a cooling valve of the hydraulic fluid supply system as a function of detected motor vehicle parameters in order to set an adjusted power distribution with the hydraulic pump controlled on the engine side and the hydraulic pump controlled on the gear set side.Type: GrantFiled: February 6, 2015Date of Patent: June 26, 2018Assignee: ZF FRIEDRICHSHAFEN AGInventors: Karl Locher, Alexander Hoffmann, Rainer Novak, Martin-Joachim Bader, Markus Terwart
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Patent number: 9856923Abstract: A method for controlling a hydraulic fluid supply system of an automatic transmission of a motor vehicle includes supplying the hydraulic fluid supply system with hydraulic fluid from at least one of a hydraulic pump controlled on an engine side and a hydraulic pump controlled on a gear set side. The method also includes controlling a retaining valve of the hydraulic fluid supply system as a function of detected motor vehicle parameters in order to set an adjusted power distribution with the hydraulic pump controlled on the engine side and the hydraulic pump controlled on the gear set side.Type: GrantFiled: February 6, 2015Date of Patent: January 2, 2018Assignee: ZF FRIEDRICHSHAFEN AGInventors: Karl Locher, Alexander Hoffmann, Rainer Novak, Martin-Joachim Bader, Markus Terwart
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Publication number: 20170074332Abstract: A method for controlling a hydraulic fluid supply system of an automatic transmission of a motor vehicle includes supplying the hydraulic fluid supply system with hydraulic fluid from at least one of a hydraulic pump controlled on an engine side and a hydraulic pump controlled on a gear set side. The method also includes controlling a cooling valve of the hydraulic fluid supply system as a function of detected motor vehicle parameters in order to set an adjusted power distribution with the hydraulic pump controlled on the engine side and the hydraulic pump controlled on the gear set side.Type: ApplicationFiled: February 6, 2015Publication date: March 16, 2017Inventors: Karl Locher, Alexander Hoffmann, Rainer Novak, Martin-Joachim Bader, Markus Terwart
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Publication number: 20170074333Abstract: A method for controlling a hydraulic fluid supply system of an automatic transmission of a motor vehicle includes supplying the hydraulic fluid supply system with hydraulic fluid from at least one of a hydraulic pump controlled on an engine side and a hydraulic pump controlled on a gear set side. The method also includes controlling a retaining valve of the hydraulic fluid supply system as a function of detected motor vehicle parameters in order to set an adjusted power distribution with the hydraulic pump controlled on the engine side and the hydraulic pump controlled on the gear set side.Type: ApplicationFiled: February 6, 2015Publication date: March 16, 2017Inventors: Karl Locher, Alexander Hoffmann, Rainer Novak, Martin-Joachim Bader, Markus Terwart
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Patent number: 9587685Abstract: A method of determining a touch-point of a friction clutch of a motor vehicle that is relevant for control purposes such that a current, actual touch-point of the friction clutch is determined adaptively, and such that the current touch-point is modified, with a correction value that depends on the elasticity of the friction clutch, in order to determine the control-relevant touch-point. The control device comprises elements for carrying out the method.Type: GrantFiled: December 14, 2012Date of Patent: March 7, 2017Assignee: ZF Friedrichshafen AGInventors: Martin-Joachim Bader, Karl Locher
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Patent number: 9033850Abstract: A method of operating a drive-train of a vehicle that comprises a combustion engine whose torque for driving the vehicle can be transmitted to a drive output via a transmission, with a hydraulically actuated clutch when the clutch is engaged. An electric machine provides torque which can act upon the drive-train. The clutch is closed by filling the clutch with hydraulic fluid through a circuit by way of a pump which can be driven by the engine and the electric machine. The method is to engage the clutch when the combustion engine is initially off and/or when the electric machine is initially switched off, determining a driving dynamic based on the behavior of the driver and adjusting the speed of the electric machine based on the determined driving dynamic such that the greater the determined driving dynamic is, the more rapidly the clutch is filled by the pump.Type: GrantFiled: September 4, 2013Date of Patent: May 19, 2015Assignee: ZF Friedrichshafen AGInventor: Martin-Joachim Bader
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Patent number: 8855879Abstract: A method of operating a clutch serving as a shift element and/or starting clutch of a drive train. During engagement, the clutch will be filled by a fast filling up to a defined minimum pressure. The fast filling is at least subdivided into two phases comprising a basic filling phase and an extension and/or a cutout phase. At the end of the basic filling phase, the actual clutch pressure is measured, and then, when the actual clutch pressure is equal to or larger than the minimum pressure, the extension and/or cutout phase is activated immediately following the basic filling phase. When the actual clutch pressure is lower than the minimum pressure, activation of the extension and/or the cutout phase is at least delayed by a pressure holding phase and, if necessary, by a pressure surplus phase.Type: GrantFiled: November 24, 2010Date of Patent: October 7, 2014Assignee: ZF Friedrichshafen AGInventors: Martin-Joachim Bader, Karl Locher, Robert Gronner, Olaf Moseler, Markus Terwart, Michael Vollmann
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Publication number: 20140073479Abstract: A method of operating a drive-train of a vehicle that comprises a combustion engine whose torque for driving the vehicle can be transmitted to a drive output via a transmission, with a hydraulically actuated clutch when the clutch is engaged. An electric machine provides torque which can act upon the drive-train. The clutch is closed by filling the clutch with hydraulic fluid through a circuit by way of a pump which can be driven by the engine and the electric machine. The method is to engage the clutch when the combustion engine is initially off and/or when the electric machine is initially switched off, determining a driving dynamic based on the behavior of the driver and adjusting the speed of the electric machine based on the determined driving dynamic such that the greater the determined driving dynamic is, the more rapidly the clutch is filled by the pump.Type: ApplicationFiled: September 4, 2013Publication date: March 13, 2014Applicant: ZF FRIEDRICHSHAFEN AGInventor: Martin-Joachim BADER
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Patent number: 8510006Abstract: A method of adapting the rapid filling time of a clutch. During adaptation, the clutch is filled by at least two successive rapid filling pulses with increasing rapid filling times. For each rapid filling pulse a reaction, resulting from the filling pulse, is monitored. If a defined reaction, for one of the rapid filling pulses, is recognized for the first time whereas for the, or for each of the previous rapid filling pulse(s) the defined reaction was not observed, then as a function of the rapid filling time of that rapid filling pulse for which the defined reaction was recognized for the first time, carrying out the adaptation of the rapid filling time and, for each rapid filling pulse used for the adaptation, gradients of the clutch pressure produced as a result of the respective rapid filling pulse are evaluated to determine the defined reaction pressure.Type: GrantFiled: November 24, 2010Date of Patent: August 13, 2013Assignee: ZF Friedrichshafen AGInventors: Martin-Joachim Bader, Karl Locher, Olaf Moseler, Markus Terwart, Frank Veth
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Patent number: 8366585Abstract: A method for determination of the synchronization point of an automatic double clutch transmission comprising two component transmissions each with one input shaft that connects via a friction clutch to the drive shaft of a motor and several gears, each shifted via a friction-synchronized gear clutch. The method includes the steps of selecting the gear clutch of a gear of a momentarily load-free component transmission; moving the associated gear setter to the neutral position as needed; successive movement of the associated gear setter in the direction of the shifting position of the selected gear until synchronous running is attained on the gear clutch within an applicable threshold; determination of the current synchronization point of the gear clutch from the current adjustment parameter of the associated gear setter; and adaptation of the valid synchronization point of the gear clutch to the current synchronization point.Type: GrantFiled: November 2, 2009Date of Patent: February 5, 2013Assignee: ZF Friedrichshafen AGInventors: Markus Terwart, Mario Bühner, Karl Locher, Martin-Joachim Bader, Dietmar Zuber, Olaf Moseler
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Publication number: 20120295760Abstract: A method of operating a clutch serving as a shift element and/or starting clutch of a drive train. During engagement, the clutch will be filled by a fast filling up to a defined minimum pressure. The fast filling is at least subdivided into two phases comprising a basic filling phase and an extension and/or a cutout phase. At the end of the basic filling phase, the actual clutch pressure is measured, and then, when the actual clutch pressure is equal to or larger than the minimum pressure, the extension and/or cutout phase is activated immediately following the basic filling phase. When the actual clutch pressure is lower than the minimum pressure, activation of the extension and/or the cutout phase is at least delayed by a pressure holding phase and, if necessary, by a pressure surplus phase.Type: ApplicationFiled: November 24, 2010Publication date: November 22, 2012Applicant: ZF FRIEDRICHSHAFEN AGInventors: Martin-Joachim Bader, Karl Locher, Robert Gronner, Olaf Moseler, Markus Terwart, Michael Vollmann
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Publication number: 20120247910Abstract: A method of adapting the rapid filling time of a clutch. During adaptation, the clutch is filled by at least two successive rapid filling pulses with increasing rapid filling times. For each rapid filling pulse a reaction, resulting from the filling pulse, is monitored. If a defined reaction, for one of the rapid filling pulses, is recognized for the first time whereas for the, or for each of the previous rapid filling pulse(s) the defined reaction was not observed, then as a function of the rapid filling time of that rapid filling pulse for which the defined reaction was recognized for the first time, carrying out the adaptation of the rapid filling time and, for each rapid filling pulse used for the adaptation, gradients of the clutch pressure produced as a result of the respective rapid filling pulse are evaluated to determine the defined reaction pressure.Type: ApplicationFiled: November 24, 2010Publication date: October 4, 2012Applicant: ZF FRIEDRICHSHAFEN AGInventors: Martin-Joachim Bader, Karl Locher, Olaf Moseler, Markus Terwart, Frank Veth
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Patent number: 8271171Abstract: A method for clutch characteristic curve adaptation of an automatic dual-clutch transmission which comprises two sub-gearboxes each with an input shaft connected, via a friction clutch, to the drive shaft of a motor and several gears that are shifted via a friction-synchronized gear clutch. A value of the current touch point of the friction clutch can be determined with the motor running and the gears disengaged in a load-free sub-gearbox. The method includes the steps of starting synchronization of a gear clutch with a defined force of a regulator. Waiting until the gear clutch is synchronized. Engaging the friction clutch of the until the gear clutch is synchronizes. Determination the current touch point from the current synchronous torque of the gear clutch and the current regulating parameter of the associated clutch regulator. Then, adapting the clutch characteristic curve of the friction clutch in view of the current touch point.Type: GrantFiled: November 2, 2009Date of Patent: September 18, 2012Assignee: ZF Friedrichshafen AGInventors: Markus Terwart, Mario Bühner, Karl Locher, Martin-Joachim Bader, Dietmar Zuber, Olaf Moseler
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Publication number: 20100114443Abstract: A method for clutch characteristic curve adaptation of an automatic dual-clutch transmission which comprises two sub-gearboxes each with an input shaft connected, via a friction clutch, to the drive shaft of a motor and several gears that are shifted via a friction-synchronized gear clutch. A value of the current touch point of the friction clutch can be determined with the motor running and the gears disengaged in a load-free sub-gearbox. The method includes the steps of starting synchronization of a gear clutch with a defined force of a regulator. Waiting until the gear clutch is synchronized. Engaging the friction clutch of the until the gear clutch is synchronizes. Determination the current touch point from the current synchronous torque of the gear clutch and the current regulating parameter of the associated clutch regulator. Then, adapting the clutch characteristic curve of the friction clutch in view of the current touch point.Type: ApplicationFiled: November 2, 2009Publication date: May 6, 2010Applicant: ZF FRIEDRICHSHAFEN AGInventors: Markus TERWART, Mario BÜHNER, Karl LOCHER, Martin-Joachim BADER, Dietmar ZUBER, Olaf MOSELER
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Publication number: 20100113217Abstract: A method for determination of the synchronization point of an automatic double clutch transmission comprising two component transmissions each with one input shaft that connects via a friction clutch to the drive shaft of a motor and several gears, each shifted via a friction-synchronized gear clutch. The method includes the steps of selecting the gear clutch of a gear of a momentarily load-free component transmission; moving the associated gear setter to the neutral position as needed; successive movement of the associated gear setter in the direction of the shifting position of the selected gear until synchronous running is attained on the gear clutch within an applicable threshold; determination of the current synchronization point of the gear clutch from the current adjustment parameter of the associated gear setter; and adaptation of the valid synchronization point of the gear clutch to the current synchronization point.Type: ApplicationFiled: November 2, 2009Publication date: May 6, 2010Applicant: ZF FRIEDRICHSHAFEN AGInventors: Markus TERWART, Mario BÜHNER, Karl LOCHER, Martin-Joachim BADER, Dietmar ZUBER, Olaf MOSELER
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Publication number: 20090178866Abstract: A method for operating a drive train of a motor vehicle that includes at least a hybrid drive with a combustion engine and an electric motor, a transmission arranged between the hybrid drive and a drive output, and a clutch arranged between the combustion engine and the electric motor, such that when the combustion engine is stopped during electric operation of the drive train the combustion engine can be started by engaging the clutch between the combustion engine and the electric motor. Before the combustion engine is started by the electric motor at least one friction element, which is arranged between the hybrid drive and the drive output, is operated at a slipping limit.Type: ApplicationFiled: January 7, 2009Publication date: July 16, 2009Applicant: ZF Friedrichshafen AGInventors: Christian SCHWEMER, Martin-Joachim Bader
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Patent number: 7188539Abstract: Within the framework of the procedure for optimizing the rocking free of vehicles with an automatic transmission, a multiple clutch gear or an automatic shift gear, in order to recognize a situation which requires a rocking free of the vehicle, the speeds of the driving wheels are compared to the speeds of the non-driven wheels. When the driving wheels are spinning or have a specific speed, without a corresponding increase in speed or speed of the non-driven wheels, the necessity for rocking free of a vehicle is recognized.Type: GrantFiled: April 20, 2005Date of Patent: March 13, 2007Assignee: ZF Friedrichshafen AGInventors: Kai-Uwe Herbster, Martin-Joachim Bader
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Publication number: 20050235765Abstract: Within the framework of the procedure for optimizing the rocking free of vehicles with an automatic transmission, a multiple clutch gear or an automatic shift gear, in order to recognize a situation which requires a rocking free of the vehicle, the speeds of the driving wheels are compared to the speeds of the non-driven wheels. When the driving wheels are spinning or have a specific speed, without a corresponding increase in speed or speed of the non-driven wheels, the necessity for rocking free of a vehicle is recognized.Type: ApplicationFiled: April 20, 2005Publication date: October 27, 2005Inventors: Kai-Uwe Herbster, Martin-Joachim Bader