Patents by Inventor Ekkehard Reibold
Ekkehard Reibold 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: 9080617Abstract: A method for controlling a friction clutch in a drive train of a motor vehicle, using a clutch actuator, on the basis of a clutch model. A nominal characteristic curve of the clutch moment, which is transmitted via the friction clutch, is adapted continuously to actual operating parameters. In order to counteract a loss of comfort of the motor vehicle, which is caused by the running-in behavior, for example, of the friction linings of the friction clutch, the friction clutch is operated by way of different sets of operating parameters during a running-in phase of the friction clutch, and after the run-in phase of the friction clutch.Type: GrantFiled: September 9, 2013Date of Patent: July 14, 2015Assignee: Schaeffler Technologies AG & Co. KGInventors: Ekkehard Reibold, Georg Goeppert, Loyal George MacMillian
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Patent number: 8725374Abstract: A method wherein the first and second threshold values of the characteristic are a threshold value of the clutch temperature, or of the speed of rotation at the particular input shaft of the clutch, or of the speed of the engine, or of the slip speed at the clutch, or of the clutch torque hysteresis, or of the oil volume flow in a wet clutch, or of the actuator speed or of the actuator position.Type: GrantFiled: May 20, 2013Date of Patent: May 13, 2014Assignee: Schaeffler Technologies AG & Co KGInventors: Erhard Hodrus, Ekkehard Reibold, George Goeppert, Juergen Eich
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Patent number: 8718888Abstract: A method for adapting a clutch characteristic curve, in particular one that exhibits hysteresis, where at least one characteristic value obtainable from the characteristic curve is compared to an appropriately measured characteristic value, and if the comparison shows that there is a deviation between the two characteristic values which is greater than a predetermined value, an adjustment is made to the clutch characteristic curve.Type: GrantFiled: June 20, 2008Date of Patent: May 6, 2014Assignee: Schaeffler Technologies GmbH & Co. KGInventor: Ekkehard Reibold
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Publication number: 20140005000Abstract: The invention relates to a method for controlling a friction clutch in a drive train of a motor vehicle by means of a clutch actuator on the basis of a clutch model, in which method a nominal characteristic curve of the clutch moment which is transmitted via the friction clutch is adapted continuously to actual operating parameters. In order to counteract a loss of comfort of the motor vehicle, which is caused by the running-in behavior, for example, of the friction linings of the friction clutch, the friction clutch is operated by way of different sets of operating parameters during a running-in phase and in a run-in phase of the friction clutch.Type: ApplicationFiled: September 9, 2013Publication date: January 2, 2014Applicant: Schaeffler Technologies AG & Co., KGInventors: Ekkehard Reibold, Georg Goeppert, Loyal George MacMillian
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Patent number: 8594899Abstract: A method for operating a clutch includes operating the clutch with increased slip during a green phase and operating the clutch with normal slip during a post-green phase. In some example embodiments, increased slip consists of slip speeds greater than 40 revolutions per minute. In an example embodiment, increased slip consists of a slip speed of approximately 50 revolutions per minute.Type: GrantFiled: March 8, 2012Date of Patent: November 26, 2013Assignee: Schaeffler Technologies AG & Co. KGInventors: Loyal George MacMillian, Ekkehard Reibold, Georg Göppert, George Herr
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Publication number: 20130253791Abstract: A method wherein the first and second threshold values of the characteristic are a threshold value of the clutch temperature, or of the speed of rotation at the particular input shaft of the clutch, or of the speed of the engine, or of the slip speed at the clutch, or of the clutch torque hysteresis, or of the oil volume flow in a wet clutch, or of the actuator speed or of the actuator position.Type: ApplicationFiled: May 20, 2013Publication date: September 26, 2013Applicant: Schaeffler Technologies AG & Co. KGInventors: Erhard Hodrus, Ekkehard Reibold, George Goeppert, Juergen Eich
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Patent number: 8480540Abstract: A method and device for controlling a friction clutch arranged between an internal combustion engine and a transmission by means of a clutch actuator that axially actuates an actuating element of the friction clutch along an actuation path associated, by means of a clutch characteristic, with a target torque that can be transmitted by means of the friction clutch. To improve the quality of controlling of the friction clutch and to avoid the application of undesirable torque, it is proposed to compensate a hysteresis that arises between the target torque and the friction torque actually transmitted by the friction clutch along the actuation path by correcting a setpoint for controlling the clutch actuator with a corrective quantity.Type: GrantFiled: August 27, 2012Date of Patent: July 9, 2013Assignee: Schaeffler Technologies AG & Co. KGInventor: Ekkehard Reibold
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Publication number: 20120322618Abstract: The invention relates to a method and device for controlling a friction clutch arranged between an internal combustion engine and a transmission by means of a clutch actuator that axially actuates an actuating element of the friction clutch along an actuation path associated, by means of a clutch characteristic, with a target torque that can be transmitted by means of the friction clutch. To improve the quality of controlling of the friction clutch and to avoid the application of undesirable torque, it is proposed to compensate a hysteresis that arises between, the target torque and the friction torque actually transmitted by the friction clutch along the actuation path by correcting a setpoint for controlling the clutch actuator with a corrective quantity.Type: ApplicationFiled: August 27, 2012Publication date: December 20, 2012Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KGInventor: Ekkehard Reibold
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Publication number: 20120232767Abstract: A method for operating a clutch includes operating the clutch with increased slip during a green phase and operating the clutch with normal slip during a post-green phase. In some example embodiments, increased slip consists of slip speeds greater than 40 revolutions per minute. In an example embodiment, increased slip consists of a slip speed of approximately 50 revolutions per minute.Type: ApplicationFiled: March 8, 2012Publication date: September 13, 2012Inventors: Loyal George MacMillian, Ekkehard Reibold, Georg Göppert, George Herr
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Patent number: 8052579Abstract: A method for checking the plausibility of an actuation position of a clutch of a double-clutch transmission operated by an actuator, including the following steps: disengaging the clutch assigned to the currently active old subtransmission and simultaneously engaging the clutch assigned to the other subtransmission to shift from the gear selected in the old subtransmission to a gear selected in the other, new subtransmission; deselecting the gear selected in the old subtransmission still during the overlapping operation of the clutches or immediately thereafter; detecting the difference between the speed of rotation of a drive shaft of the double-clutch transmission driven by a drive motor and the speed of rotation of the input shaft of the old subtransmission; and evaluating the state of the clutch assigned to the old subtransmission as disengaged when the difference in speeds of rotation exceeds a predetermined value within a predetermined time after deselection of the gear.Type: GrantFiled: May 30, 2008Date of Patent: November 8, 2011Assignee: Schaeffler Technologies GmbH & Co. KGInventors: Juergen Eich, Ekkehard Reibold, Minh Nam Nguyen, Matthias Panzer
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Patent number: 7860632Abstract: At least one input signal is detected in a time slot, representing the temporal progression of at least one rotational value of the motor of a drive train section and/or the respective corresponding power thereof and is electronically treated and/or evaluated a plurality of times in a parallel manner and according to different characteristics. At least one comparison of the different treating and/or evaluation results of the same input signal is determined, whether the transmission behavior of the drive train or at least one predetermined drive train component is altered. A PT1 filtering, for example, is used for the treatment and/or evaluation.Type: GrantFiled: August 13, 2009Date of Patent: December 28, 2010Assignee: Schaeffler Technologies GmbH & Co. KGInventor: Ekkehard Reibold
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Publication number: 20090299589Abstract: At least one input signal is detected in a time slot, representing the temporal progression of at least one rotational value of the motor of a drive train section and/or the respective corresponding power thereof and is electronically treated and/or evaluated a plurality of times in a parallel manner and according to different characteristics. At least one comparison of the different treating and/or evaluation results of the same input signal is determined, whether the transmission behavior of the drive train or at least one predetermined drive train component is altered. A PT1 filtering, for example, is used for the treatment and/or evaluation.Type: ApplicationFiled: August 13, 2009Publication date: December 3, 2009Applicant: LUK LAMELLEN UND KUPPLUNGSBAU BETEILIGUNGS KGInventor: Ekkehard REIBOLD
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Patent number: 7617035Abstract: At least one input signal is detected in a time slot, representing the temporal progression of at least one rotational value of the motor of a drive train section and/or the respective corresponding power thereof and is electronically treated and/or evaluated a plurality of times in a parallel manner and according to different characteristics. At least one comparison of the different treating and/or evaluation results of the same imput signal is determined, whether the transmission behavior of the drive train or at least one predetermined drive train component is altered. A PT1 filtering, for example, is used for the treatment and/or evaluation.Type: GrantFiled: November 24, 2004Date of Patent: November 10, 2009Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KGInventor: Ekkehard Reibold
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Publication number: 20090000901Abstract: A method for adapting a clutch characteristic curve, in particular one that exhibits hysteresis, where at least one characteristic value obtainable from the characteristic curve is compared to an appropriately measured characteristic value, and if the comparison shows that there is a deviation between the two characteristic values which is greater than a predetermined value, an adjustment is made to the clutch characteristic curve.Type: ApplicationFiled: June 20, 2008Publication date: January 1, 2009Applicant: LUK LAMELLEN UND KUPPLUNGSBAU BETEILIGUNGS KGInventor: Ekkehard Reibold
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Publication number: 20080305931Abstract: A method for checking the plausibility of an actuation position of a clutch of a double-clutch transmission operated by an actuator, including the following steps: disengaging the clutch assigned to the currently active old subtransmission and simultaneously engaging the clutch assigned to the other subtransmission to shift from the gear selected in the old subtransmission to a gear selected in the other, new subtransmission; deselecting the gear selected in the old subtransmission still during the overlapping operation of the clutches or immediately thereafter; detecting the difference between the speed of rotation of a drive shaft of the double-clutch transmission driven by a drive motor and the speed of rotation of the input shaft of the old subtransmission; and evaluating the state of the clutch assigned to the old subtransmission as disengaged when the difference in speeds of rotation exceeds a predetermined value within a predetermined time after deselection of the gear.Type: ApplicationFiled: May 30, 2008Publication date: December 11, 2008Applicant: LUK LAMELLEN UND KUPPLUNGSBAU BETEILIGUNGS KGInventors: Juergen Eich, Ekkehard Reibold, Minh Nam Nguyen, Matthias Panzer
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Patent number: 7314429Abstract: A method for the advance determination of an overload of an automatically actuated clutch of a vehicle during a slippage phase and to prevent the overload. The method determines the energy introduced into the clutch during a predetermined first time span of the slippage phase and/or acquires the current temperature of the clutch and, on the basis of the anticipated second time span of the slippage phase, determines the anticipated energy introduction into the clutch and/or the anticipated clutch temperature and, as a function of the anticipated energy introduction and/or the anticipated clutch temperature, takes measures to prevent the overload.Type: GrantFiled: August 2, 2005Date of Patent: January 1, 2008Assignee: LuK Lamellen und Kupplungsbau Beteiligungs KGInventors: Ekkehard Reibold, Jens Martin, Joerg Metzger
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Publication number: 20060030457Abstract: The present invention broadly comprises a method for the advance determination of an overload of an automatically actuated clutch of a vehicle during a slippage phase and to prevent the overload. The method determines the energy introduced into the clutch during a predetermined first time span of the slippage phase and/or acquires the current temperature of the clutch and, on the basis of the anticipated second time span of the slippage phase, determines the anticipated energy introduction into the clutch and/or the anticipated clutch temperature and, as a function of the anticipated energy introduction and/or the anticipated clutch temperature, takes measures to prevent the overload.Type: ApplicationFiled: August 2, 2005Publication date: February 9, 2006Applicant: LuK Lamellen und Kupplungsbau Beteiligungs KGInventors: Ekkehard Reibold, Jens Martin, Joerg Metzger
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Publication number: 20050085976Abstract: At least one input signal is detected in a time slot, representing the temporal progression of at least one rotational value of the motor of a drive train section and/or the respective corresponding power thereof and is electronically treated and/or evaluated a plurality of times in a parallel manner and according to different characteristics. At least one comparison of the different treating and/or evaluation results of the same imput signal is determined, whether the transmission behavior of the drive train or at least one predetermined drive train component is altered. A PT1 filtering, for example, is used for the treatment and/or evaluation.Type: ApplicationFiled: November 24, 2004Publication date: April 21, 2005Applicant: LUK LAMELLEN UND KUPPLUNGSBAU BETEILIGUNGS KGInventor: Ekkehard Reibold