Patents by Inventor Kai Borntraeger
Kai Borntraeger 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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Publication number: 20190389298Abstract: A transmission for a hybrid drive having transmission input and output shafts, a further transmission input shaft and an electric machine, which drives the further transmission input shaft. A main transmission has first and second partial transmissions with a plurality of gear planes and a pair of concentric fourth shafts, and shift elements. A range group can couple the main transmission and has a planetary gearset with three transmission elements. The first element can couple either of the transmission input shafts via the shift elements. The second element is connected to the transmission output shaft and can couple a gear plane of the partial transmissions via the shift elements. The third transmission element can be fixed to the housing or blocked against the first or second transmission element.Type: ApplicationFiled: January 25, 2018Publication date: December 26, 2019Inventors: Johannes KALTENBACH, Rayk GERSTEN, Stefan RENNER, Johannes GLÜCKLER, Christian MITTELBERGER, Kai BORNTRÄGER
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Publication number: 20190367035Abstract: A method for operating a drive-train having two drives, a drive output, a manual transmission having a planetary gearset and two independent load paths. From the first and second drives, torque can pass to the output via respective first and second paths. The two drives can be coupled to respective elements of the planetary gearset, and the transmission is coupled to a web gear. To start, when torque passes to the output first via a second path gear and thereafter via a first path gear whose ratio is different from that of the second path gear, then before changing from the second path to the first path, the torque passed at the web gear is changed such that if torque desired by the driver is unchanged, despite the change from the second to the first path, the torque acting at the output remains constant.Type: ApplicationFiled: May 9, 2019Publication date: December 5, 2019Inventors: Christian MITTELBERGER, Stefan BLATTNER, Kai BORNTRÄGER, Johannes GLÜCKLER, Markus EISELE
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Publication number: 20190344654Abstract: A transmission having a main transmission and a splitter group, and including at least four spur gear planes formed with a countershaft and at least five shifting elements for engaging at least six gears between the transmission input and output shafts. When shifting between gears with the highest and the second-highest gear ratios, a shift occurs in the shifting elements associated with the splitter group but not in the shifting elements associated with the main transmission, whereas when shifting between gears with the lowest and second-lowest gear ratios, a shift occurs in the shifting elements associated with the main transmission but not in the shifting elements associated with the splitter group. An electric machine can be connected by a gearset, and depending on its shift position, the gearset acts as a pre-transmission ratio for the electric machine or as a superimposition transmission.Type: ApplicationFiled: January 25, 2018Publication date: November 14, 2019Inventors: Johannes KALTENBACH, Johannes GLÜCKLER, Christian MITTELBERGER, Kai BORNTRÄGER, Rayk GERSTEN, Stefan RENNER
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Publication number: 20190293153Abstract: A multi-speed transmission has drive and output shafts, three front-mounted and two rear-mounted planetary gear sets, and shift elements which can be engaged to selectively implement at least eleven forward gears and one reverse gear. The front gear sets are connected to one element of the rear gear sets. Five shift elements are assigned to the front gear sets and two are assigned to the rear gear sets, such that the front gear sets transmit seven output speeds to the rear gear sets. If normalized to the input speed of the drive shaft, at least one output speed of the front gear sets is less than 0, one output speed is greater than 1, one output speed is equal to 0, one output speed is equal to 1 and two output speeds are between 0 and 1.Type: ApplicationFiled: November 9, 2017Publication date: September 26, 2019Inventors: Peter ZIEMER, Kai BORNTRÄGER, Christoph MARGRAF, Andreas BEISSWENGER, Stefan BROM
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Publication number: 20190293154Abstract: A multi-speed transmission having drive and output shafts, three front-mounted and two rear-mounted planetary gearsets, six shift elements which are selectively engaged to render a speed of the drive shaft and speeds generated in the front gearsets to achieve at least one reverse and twelve forward gears via at least one of the rear gearsets transmissible as the output shaft speed. Four shift elements are assigned to the front gearsets and two shift elements are assigned to the rear gearsets. At least one of the front gearsets is fixed to an element of the rear gearsets, resulting in six different output speeds of the front gearsets being transmissible to at least one of the rear gearsets. If normalized to the input speed of the drive shaft, one of the six output speeds is less than 0, four are between 0 and 1, and one is equal to 1.Type: ApplicationFiled: November 9, 2017Publication date: September 26, 2019Inventors: Peter ZIEMER, Kai BORNTRÄGER, Christoph MARGRAF, Andreas BEISSWENGER, Stefan BROM
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Publication number: 20190031016Abstract: A method for compensation of a support torque at a combustion engine and transmission which provide an overlay of combustion engine and electric machine. The combustion engine, the electric machine, and a transmission gearset are connected with each other via a planetary gearset, which is positioned in front of a downstream transmission gearset. The invention concerns a transmission gearset of a three-shaft transmission, each with a transmission input shaft for the electric machine, and for the combustion engine, and an output shaft. For the connection or disconnection of the transmission input shaft of the electric machine while driving, the electric machine is used for the synchronization of the input shaft of the electric machine, and the created support torque at the combustion engine is determined, based on this support torque, to match a combustion engine torque and thus to compensate the support torque.Type: ApplicationFiled: July 13, 2018Publication date: January 31, 2019Inventors: Johannes GLÜCKLER, Christian MITTELBERGER, Kai BORNTRÄGER, Andreas HEINZLER, Jochen BREUER, Stefan BLATTNER, Thorsten LEIM, Rick HAUSCHWITZ
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Patent number: 9822860Abstract: A drive-train for a vehicle with at least one electric drive, which can be coupled via a driveshaft (2) to at least a first transmission ratio stage (i1) and a second transmission ratio stage (i2). At least one shifting mechanism is provided for engaging the transmission ratio stages (i1, i2). To carry out powershifts, the shifting mechanism includes at least one interlocking shifting element (5) and at least one frictional shifting element (6, 6A). Each of the transmission ratio stages (i1, i2) can be engaged by the interlocking shifting element (5) and at least one of the transmission ratio stages (i2) can be engaged both by the interlocking shifting element (5) and by the frictional shifting element (6). Methods for carrying out a powershift, between a frictional shifting element (6, 6A) and an interlocking shifting element (5) in the drive-train, are also disclosed.Type: GrantFiled: February 12, 2014Date of Patent: November 21, 2017Assignee: ZF Friedrichshafen AGInventors: Johannes Kaltenbach, Matthias Reisch, Ulrich Kehr, Michael Preuβ, Kai Bornträger
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Patent number: 9597952Abstract: A device for a drive train of a hybrid vehicle having a planetary gear set which comprises a carrier element, a sun gear element, and a ring gear element. A first element connects to a first input shaft of a first subtransmission of a transmission, and a second element connects to an electric machine of a hybrid drive. A first shift element which couples, in a first shift position, a third of the elements to a second input shaft of a second subtransmission of the transmission, to which an internal combustion engine can be coupled, and, in a second shift position, can be coupled to another element of the planetary gear set, and having a second shift element which couples the input shafts of both subtransmissions when engaged and separates the input shafts of both subtransmissions when disengaged.Type: GrantFiled: June 8, 2016Date of Patent: March 21, 2017Assignee: ZF Friedrichschafen AGInventors: Johannes Kaltenbach, Kai Bornträger
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Publication number: 20160280056Abstract: A device for a drive train of a hybrid vehicle having a planetary gear set which comprises a carrier element, a sun gear element, and a ring gear element. A first element connects to a first input shaft of a first subtransmission of a transmission, and a second element connects to an electric machine of a hybrid drive. A first shift element which couples, in a first shift position, a third of the elements to a second input shaft of a second subtransmission of the transmission, to which an internal combustion engine can be coupled, and, in a second shift position, can be coupled to another element of the planetary gear set, and having a second shift element which couples the input shafts of both subtransmissions when engaged and separates the input shafts of both subtransmissions when disengaged.Type: ApplicationFiled: June 8, 2016Publication date: September 29, 2016Inventors: Johannes KALTENBACH, Kai BORNTRÄGER
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Patent number: 9309934Abstract: A method of actuating a shifting element with three shift positions, having a simply controlled shifting cylinder as the actuating element, a shifting element for shifting to the three shift positions and a pressure regulator, such that the shifting cylinder is designed as a cylinder with one working line and the shifting element is pushed by the spring force of at least one spring element to an end position and moved to the other shift positions in opposition to the spring force. The central position is recognized in that, when the correct shifting element position is reached, the force for moving the shifting element in opposition to the spring force abruptly increases and, because of this, a specific pressure can be set by a pressure regulator for the central position.Type: GrantFiled: March 21, 2013Date of Patent: April 12, 2016Assignee: ZF Friedrichshafen AGInventors: Kai Borntraeger, Markus Mueller
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Patent number: 9291243Abstract: A motor vehicle powershift transmission which comprising two partial transmissions (TG1, TG2) each with a respective input shaft (GE1, GE2) that can be drivingly connected, via a main separator clutch (CL1, CL2; CL1?, CL2?; CL1*, CL2*), with the driveshaft (TW) of a drive engine (VM) and, on the output side, with a common output shaft (GA). To enable powershifts without frictional slipping, the two input shafts (GE1, GE2), on the input side, can be connected to and disconnected from a respective intermediate shaft (ZW1, ZW2) by the respective main separator clutch (CL1, CL2; CL1?, CL2?; CL1*, CL2*). The first intermediate shaft (ZW1) is directly connected to the driveshaft (TW) and the second intermediate shaft (ZW2) is in driving connection with the first intermediate shaft (ZW1) by way of a variator (V) which has a continuously adjustable transmission ratio (iV) and a rest transmission ratio having the value one iV—0=1).Type: GrantFiled: April 8, 2014Date of Patent: March 22, 2016Assignee: ZF Friedrichshafen AGInventors: Kai Borntraeger, Bernard Hunold, Johannes Kaltenbach
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Publication number: 20160025189Abstract: A vehicle transmission having first and second transmission input shafts (GE1, GE2) and having at least three planetary gear sets (PG1, PG2, PG3). A sub-transmission (TG1, TG2) is allocated to each of first and second transmission input shafts (GE1, GE2) and one of first and second sub-transmissions (TG1, TG2) comprises at least the first planetary gear set (PG1), and the other of first and second sub-transmissions (TG1, TG2) comprises at least the second planetary gear set (PG2). To ensure that the vehicle transmission is economically manufactured and useful for both conventional and hybrid drive trains, a provision is that the transmission input shafts (GE1, GE2) be effectively connected or effectively connectable with the planetary gear sets (PG1, PG2, PG3), that it be possible to variably activate first and second sub-transmissions (TG1, TG2) for implementing multiple gears, and that one of the gears be shiftable as a direct-drive gear.Type: ApplicationFiled: February 12, 2014Publication date: January 28, 2016Applicant: ZF FRIEDRICHSHAFEN AGInventors: Johannes KALTENBACH, Peter ZIEMER, Kai BORNTRÄGER
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Publication number: 20160017968Abstract: A drive-train for a vehicle with at least one electric drive, which can be coupled via a driveshaft (2) to at least a first transmission ratio stage (i1) and a second transmission ratio stage (i2). At least one shifting mechanism is provided for engaging the transmission ratio stages (i1, i2). To carry out powershifts, the shifting mechanism includes at least one interlocking shifting element (5) and at least one frictional shifting element (6, 6A). Each of the transmission ratio stages (i1, i2) can be engaged by the interlocking shifting element (5) and at least one of the transmission ratio stages (i2) can be engaged both by the interlocking shifting element (5) and by the frictional shifting element (6). Methods for carrying out a powershift, between a frictional shifting element (6, 6A) and an interlocking shifting element (5) in the drive-train, are also disclosed.Type: ApplicationFiled: February 12, 2014Publication date: January 21, 2016Inventors: Johannes KALTENBACH, Matthias REISCH, Ulrich KEHR, Michael PREUß, Kai BORNTRÄGER
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Patent number: 8905890Abstract: A range-change transmission having a main transmission, an upstream splitter group and a downstream range group. The main transmission comprises planetary gearsets (PS2, PS3). A ring gear of gearset (PS2) is rotationally fixed to an input shaft of the main transmission. A planetary carrier of gearset (PS2) is fixed, via an intermediate shaft, to the sun gear of gearset (PS3). By way of one dual shifting element, the sun gear of gearset (PS2) can be selectively locked to the housing or rotationally fixed to the intermediate shaft. By way of two single shifting elements, the planetary carrier of gearset (PS3) can be locked to the housing or rotationally fixed to the output shaft of the main transmission. By way of another dual shifting element, the ring gear of gearset (PS3) can be locked to the housing or rotationally fixed to the output shaft of the main transmission.Type: GrantFiled: May 1, 2013Date of Patent: December 9, 2014Assignee: ZF Friedrichshafen AGInventor: Kai Borntraeger
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Publication number: 20140329633Abstract: A motor vehicle powershift transmission which comprising two partial transmissions (TG1, TG2) each with a respective input shaft (GE1, GE2) that can be drivingly connected, via a main separator clutch (CL1, CL2; CL1?, CL2?; CL1*, CL2*), with the driveshaft (TW) of a drive engine (VM) and, on the output side, with a common output shaft (GA). To enable powershifts without frictional slipping, the two input shafts (GE1 GE2), on the input side, can be connected to and disconnected from a respective intermediate shaft (ZW1, ZW2) by the respective main separator clutch (CL1, CL2; CL1?, CL2?; CL1*, CL2*). The first intermediate shaft (ZW1) is directly connected to the driveshaft (TW) and the second intermediate shaft (ZW2) is in driving connection with the first intermediate shaft (ZW1) by way of a variator (V) which has a continuously adjustable transmission ratio (iV) and a rest transmission ratio having the value one iV—0=1).Type: ApplicationFiled: April 8, 2014Publication date: November 6, 2014Applicant: ZF Friedrichshafen AGInventors: Kai BORNTRAEGER, Bernard HUNOLD, Johannes KALTENBACH
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Patent number: 8702546Abstract: A device for a drive-train of a hybrid vehicle having a planetary gear system that comprises three elements, namely, a ring gear, sun gear and carrier. A first element of these elements of the planetary gear system has a fixed connection with a transmission input shaft of a transmission. A second element of the elements of the planetary gear system has a fixed connection with an electric machine of a hybrid drive. A clutch which can couple two of the three elements of the planetary gear system with one another. Additionally, a shifting element is provided by which a third element, of these three elements of the planetary gear system, can be coupled, in a first shift position, to an internal combustion engine of the hybrid drive and, in a second shift position, to one of a housing or a stator.Type: GrantFiled: November 8, 2011Date of Patent: April 22, 2014Assignee: ZF Friedrichshafen AGInventors: Johannes Kaltenbach, Kai Borntraeger
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Patent number: 8696506Abstract: A device for a drive train of a hybrid vehicle having a planetary gear set (4) including a ring gear (9), a sun gear (10) and a carrier (8). A first element of these elements of the planetary gear set serves as the connection to a transmission input shaft (11) of a transmission (3) and a second element of these elements of the planetary gear set serves as the connection to an electric machine (2) of a hybrid drive. A clutch (5) and associated shift element (6) by which, in a first shift position (A), a third element of the planetary gear set can be coupled to an internal combustion engine (1) of the hybrid drive while in a second shift position (B), can be coupled to one of the other elements of the planetary gear set (4).Type: GrantFiled: October 18, 2012Date of Patent: April 15, 2014Assignee: ZF Friedrichshafen AGInventors: Johannes Kaltenbach, Kai Bornträger
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Publication number: 20140097061Abstract: A device and a method for rapid disengagement of a clutch (2). The device has a mechanical transmission path (26) which is arranged between a clutch actuator (12) and a first clutch part and comprises a knee lever (4) which facilitates rapid disengagement of the clutch (2).Type: ApplicationFiled: October 8, 2013Publication date: April 10, 2014Applicant: ZF Friedrichshafen AGInventors: Kai BORNTRAEGER, Thorsten LEIM
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Patent number: 8684875Abstract: A device for a drive-train of a hybrid vehicle comprising a planetary gearset having three elements which comprise a carrier, a sun gear and a ring gear. A first elements serves as a fixed connection of a first input shaft of a first partial transmission of a transmission. A second of the elements serves as a fixed connection of a hybrid drive electric machine. A first shifting element connects, in a first position thereof, a third of the elements to a second input shaft of a second partial transmission, to which a hybrid drive combustion engine can be coupled. The first shifting element, when in a second position, connects the third of the elements to the housing or the stator. A second shifting element, when engaged, couples the two input shafts of the two partial transmissions with one another and, when disengaged, separates the two input shafts from one another.Type: GrantFiled: November 8, 2011Date of Patent: April 1, 2014Assignee: ZF Friedrichshafen AGInventors: Johannes Kaltenbach, Kai Borntraeger
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Publication number: 20130296097Abstract: A range-change transmission having a main transmission, an upstream splitter group and a downstream range group. The main transmission comprises planetary gearsets (PS2, PS3). A ring gear of gearset (PS2) is rotationally fixed to an input shaft of the main transmission. A planetary carrier of gearset (PS2) is fixed, via an intermediate shaft, to the sun gear of gearset (PS3). By way of one dual shifting element, the sun gear of gearset (PS2) can be selectively locked to the housing or rotationally fixed to the intermediate shaft. By way of two single shifting elements, the planetary carrier of gearset (PS3) can be locked to the housing or rotationally fixed to the output shaft of the main transmission. By way of another dual shifting element, the ring gear of gearset (PS3) can be locked to the housing or rotationally fixed to the output shaft of the main transmission.Type: ApplicationFiled: May 1, 2013Publication date: November 7, 2013Applicant: ZF Friedrichshafen AGInventor: Kai BORNTRAEGER