Patents Assigned to Getrag Getriebe-Und Zahnradfabrik Hermann
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Publication number: 20100305802Abstract: A method for detecting a fault state in an automated motor vehicle gearbox having two parallel branches. Each branch has a clutch and is configured to transmit driving torques from a drive unit to at least one driven wheel of the motor vehicle. The method comprises the steps of sensing whether both clutches are at least partially closed; of sensing the rotational speed of the at least one driven wheel and sensing the rotational speed of a non-driven wheel, and of detection of a fault state if both clutches are at least partially closed, and a difference between the rotational speeds of the wheels is greater than a predetermined reference value.Type: ApplicationFiled: June 7, 2010Publication date: December 2, 2010Applicant: GETRAG Getriebe-und Zahnradfabrik Hermann Hagenmeyer GmbH & Die KGInventors: Martin Seufert, Ralf Hettich, Josef Glatthaar, Ralph Richter, Tobias Kalisch, Marius Bryzgalski, Joerg Moellmann
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Publication number: 20100282561Abstract: A method for adjusting the point of engagement of a friction clutch of a step-variable transmission for a motor vehicle, in particular a friction clutch of a dual clutch transmission. The friction clutch is controllably actuated by means of a clutch actuator and at least one synchronizer shifting clutch is controllably actuated by means of a shift actuator for the engagement and disengagement of a gear ratio of the spur-gear transmission. A set-point of the clutch actuator for the point of engagement of the friction clutch is adjusted as a function of a speed gradient value, which ensues from a transitional state with the friction clutch actuated and the shifting clutch actuated, once the shifting clutch is opened. The transitional state is established by setting the clutch actuator and the shift actuator to a respective transitional value substantially at the same time or, at least in sections, in parallel.Type: ApplicationFiled: May 19, 2010Publication date: November 11, 2010Applicants: GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG, Bayerische Motoren Werke Aktiengesellschaft, Conti Temic microelectronic GmbHInventors: Rainer Rinck, Markus Schuerlein, Tobias Soller
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Patent number: 7806804Abstract: Method for shifting, in particular engaging and/or disengaging, gears in an automatic multi-stage gearbox of a motor vehicle, wherein the gearbox comprises a drive input shaft (18) connectable to an engine drive output shaft (16) by means of a friction clutch (12) which acts as a separating clutch (12), and a drive output shaft (20) couplable to a drive wheel or to drive wheels of the motor vehicle, wherein a shift process takes place, in particular only, as a function of rotational speeds (n) of the shafts, wherein each gear is assigned a synchronizing device (36), which acts as a shift clutch, in order to connect the drive input shaft (18) to the drive output shaft (20), comprising the following steps: setting the separating clutch (12) into a dragging position such that a low, preferably predefined, drag torque is transmitted from the engine drive output shaft (16) to the drive input shaft (18), which drag torque is sufficient to bring a rotational speed (nIS) of the drive input shaft (18) when the shift cType: GrantFiled: January 27, 2010Date of Patent: October 5, 2010Assignee: GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KGInventors: Patrick Dreher, Martin Seufert
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Publication number: 20100240465Abstract: A shaft arrangement for a transmission comprises a shaft having an axial bore into which oil can be introduced via an oil supply system, at least one loose wheel which is rotatably supported on the shaft via a bearing, and a shift clutch arrangement which is arranged for connecting the loose wheel with the shaft in a rotationally fixed manner. The shift clutch arrangement comprises a guide sleeve which is connected with the shaft via a tooth engagement in a rotationally fixed manner. The axial bore is connected via at least one transversal bore with the outer circumference of the shaft, so as to supply oil to the bearing and to the shift clutch arrangement. The transversal bore is arranged in an area of the tooth engagement between the guide sleeve and the shaft. A channel is provided in at least one of an area of a toothing of the guide sleeve and an area of the toothing of the shaft, which, together with the guide sleeve toothing, forms the tooth engagement.Type: ApplicationFiled: October 19, 2009Publication date: September 23, 2010Applicant: GETRAG Getriebe-und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KGInventors: Guenter Ruehle, Benjamin Kesel
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Publication number: 20100241325Abstract: It is disclosed a system and method for maintaining the operation of an automated transmission (16), particularly a dual clutch transmission, for a motor vehicle, in case of a failure of an engine speed sensor (50) or a bus connection (44) between a first control module (42) controlling an engine (28) being connectable to the transmission (16) through at least one separation clutch (12, 149, and a second control module (34) controlling regulating units (12, 14) for connecting the engine (28) to the transmission (16) or to one or more driving wheels (34) in a force-transmitting manner, wherein gear-shift relevant data, particularly a number of revolutions (ne) of the engine, is exchanged between the control modules (34, 42) over the bus connection (44), the method comprising the following steps: checking whether a number of revolutions (ne; n1, n2) of a shaft (22; 30, 32, particularly an engine shaft (22), which is detected by a sensor (50) of one of the control modules (42) dedicated to this purpose can be trType: ApplicationFiled: June 3, 2009Publication date: September 23, 2010Applicants: GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KG, GETRAG Transmission CorporationInventors: Josef Glatthaar, Tobias Kalisch, Oliver Ottinger, Bruce Palansky
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Publication number: 20100187067Abstract: The invention relates to an actuating mechanism for engaging and disengaging a separating clutch of a single-clutch or multiple-clutch transmission, which has a housing, for a motor vehicle, having: an actuating drive; a cam segment which has a curved recess and which is rotatable about a first bearing, said first bearing being fixed with respect to the housing, and which can be rotated by the actuating drive in an engagement rotational direction or a disengagement rotational direction; and an engagement fork which is rotatable about a second bearing, said second bearing being fixed with respect to the housing, and which is coupled at one side of the fork to the cam segment by means of a cam follower and which can be coupled on an opposite side of the fork to the separating clutch in such a way that the separating clutch is closed in the event of a rotation of the cam segment in the engagement rotational direction and the separating clutch is opened in the event of a rotation of the cam segment in the disengaType: ApplicationFiled: March 6, 2009Publication date: July 29, 2010Applicant: GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KGInventors: Jan Hasenkamp, Kuno Fronius
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Publication number: 20100187026Abstract: An electrical axle assembly for a motor vehicle comprises a first electric machine, which is rotationally fixed to a first input shaft, and a second electric machine, which is rotationally fixed to a second input shaft. The first input shaft and the second input shaft are arranged coaxially along an input axle. The axle assembly further comprises a first output shaft, which can be connected to a first driving wheel, and a second output shaft, which can be connected to a second driving wheel. The first output shaft and the second output shaft are arranged coaxially along an output axle. Further, they are connected to the associated input shaft via at least one transmission stage, in such a way that the driving wheels can be driven independently of one another by the electric machines. At least one of the shafts here has a bearing journal, which is radially supported in an axial bore of a shaft coaxial therewith.Type: ApplicationFiled: January 6, 2010Publication date: July 29, 2010Applicant: GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KGInventor: Daniel Knoblauch
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Publication number: 20100184561Abstract: The invention relates to a method for controlling a shift process in a dual-clutch gearbox having a dual-clutch gearbox input shaft connected to a drive engine, having two friction clutches and having two partial gearboxes.Type: ApplicationFiled: January 21, 2010Publication date: July 22, 2010Applicant: GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KGInventors: Reinhard Schaarschmidt, Joachim Buerkle, Mathias Himmelsbach, Roland Pfister, Oliver Ottinger, Andreas Schaefer, Uwe Leibbrand, Raphael Ahne, Tobias Kalisch
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Publication number: 20100160113Abstract: Method for shifting, in particular engaging and/or disengaging, gears in an automatic multi-stage gearbox of a motor vehicle, wherein the gearbox comprises a drive input shaft (18) connectable to an engine drive output shaft (16) by means of a friction clutch (12) which acts as a separating clutch (12), and a drive output shaft (20) couplable to a drive wheel or to drive wheels of the motor vehicle, wherein a shift process takes place, in particular only, as a function of rotational speeds (n) of the shafts, wherein each gear is assigned a synchronizing device (36), which acts as a shift clutch, in order to connect the drive input shaft (18) to the drive output shaft (20), comprising the following steps: setting the separating clutch (12) into a dragging position such that a low, preferably predefined, drag torque is transmitted from the engine drive output shaft (16) to the drive input shaft (18), which drag torque is sufficient to bring a rotational speed (nIS) of the drive input shaft (18) when the shift cType: ApplicationFiled: January 27, 2010Publication date: June 24, 2010Applicant: GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KGInventors: Patrick Dreher, Martin Seufert
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Publication number: 20100152986Abstract: A method for controlling dual clutch transmission with at least two partial drive trains, each arranged to be coupled with an engine by means of a clutch, in that, a first clutch of an actively operated partial drive train currently transmitting torque is opened, whereas a second clutch of the partial drive train not actively operated is closed in the already engaged gear and determining a reduction of a maximum possible lateral guiding force of at least one drive wheel and determining torque transmitted by the clutches, wherein, in the case of reduction of the maximally possible lateral guiding force below a default value and in the case that torque is transmitted by both clutches, the torque of one of the clutches is reduced.Type: ApplicationFiled: March 2, 2010Publication date: June 17, 2010Applicants: LUK LAMELLEN UND KUPPLUNGSBAU BETEILIGUNGS KG, Getrag Getriebe-und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KGInventors: Heiko PRILLER, Thomas WEBER, Juergen EICH, Tobias KALISCH, Ralf HETTICH, Marc KRAMER, Martin SEUFERT
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Publication number: 20100139454Abstract: A step variable transmission for a motor vehicle has a plurality of forward gear stages and at least one reverse gear stage. The transmission comprising: a drive input shaft arrangement, a drive output shaft arrangement, and a plurality of wheel sets which have loose wheels and shift wheels, wherein the shift wheels are rotatably mounted on a shaft arrangement and can be rotationally fixedly connected to the associated shaft arrangement by means of respective shift clutches.Type: ApplicationFiled: February 19, 2010Publication date: June 10, 2010Applicant: GETRAG Getriebe-und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KGInventors: Georg Burgardt, Reinhard Schaarschmidt, Stefan Kapp
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Patent number: 7712594Abstract: Dual clutch arrangement for a dual clutch transmission. The dual clutch arrangement has a housing, an input shaft, a first friction clutch, a second friction clutch, two output shafts, a hub which is fixed to the housing, a first piston/cylinder arrangement which is fixed to the housing, and a second piston/cylinder arrangement which is fixed to the housing. Input members of the friction clutches are connected to the input shaft. Output members of the friction clutches in each case are connected to one of the two output shafts. It is possible for the friction clutches to be actuated in each case by means of one of the piston/cylinder arrangements, which are fixed to the housing. At least one of the input members is rotatably mounted by means of a radial bearing arrangement on the hub which is fixed to the housing.Type: GrantFiled: February 28, 2007Date of Patent: May 11, 2010Assignee: GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KGInventors: Hansi Gremplini, Kuno Fronius
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Patent number: 7690278Abstract: A step variable transmission for a motor vehicle has a plurality of forward gear stages and at least one reverse gear stage. The transmission comprising: a drive input shaft arrangement, a drive output shaft arrangement, and a plurality of wheel sets which have loose wheels and shift wheels, wherein the shift wheels are rotatably mounted on a shaft arrangement and can be rotationally fixedly connected to the associated shaft arrangement by means of respective shift clutches.Type: GrantFiled: May 18, 2007Date of Patent: April 6, 2010Assignee: GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KGInventors: Georg Burgardt, Reinhard Schaarschmidt, Stefan Kapp
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Patent number: 7632213Abstract: A method is disclosed for optimizing the gear-shifting sequence in a step-variable transmission fitted in a motor vehicle, in particular in an automated shift transmission, which has a plurality of gears, which can be engaged and disengaged by means of respective clutches, the method comprising the following steps: registering at least one of a tolerance-dependent and a wear-dependent parameter of a clutch of the step-variable transmission; and adjustment of a set-point displacement value of a gear-shifting member of the clutch, which corresponds to the parameter and which is approached in the course of a gear shift, as a function of the value of the parameter registered.Type: GrantFiled: October 2, 2006Date of Patent: December 15, 2009Assignee: GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KGInventors: Rainer Disch-Simon, Tobias Kalisch
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Patent number: 7624658Abstract: A transmission configuration includes an automated dual-clutch transmission having two transmission sections with respective input shafts, respective output shafts and respective motor clutches. The motor clutches are connected, on a motor side thereof, to a drive shaft and to a respective one of the input shafts on a transmission side thereof. A drive-side speed sensor unit is disposed at the drive shaft. An input-side speed sensor configuration includes sensor wheels connected, fixed against relative rotation, to respective ones of the input shafts, and pulse sensors disposed stationary with respect to a housing and within an effective range of the respective sensor wheels. The input-side speed sensor configuration is configured to detect a speed of the input shafts and a direction of rotation of at least one of the input shafts. A method for controlling an automated dual-clutch transmission is also provided.Type: GrantFiled: March 6, 2008Date of Patent: December 1, 2009Assignees: Volkswagen Aktiengesellschaft, GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KGInventors: Jörg Fähland, Bernd Cappelmann, Rainer Hofmann, Ansgar Damm, Günter Rühle, Martin Seufert, Matthias Beck, Josef Glatthaar, Lothar Herdle
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Publication number: 20090255773Abstract: An actuator arrangement for a clutch of a drive train for motor vehicles. The clutch is prestressed into an opened position and can be activated electromechanically. An electric motor can be coupled to the clutch in order to activate it. A control unit actuates the electric motor. The actuator arrangement has a safety device which is connected to the electric motor parallel to the control unit. The safety device is configured, in the case of a fault state, to supply electrical power to the electric motor independently of the control unit in order to open the clutch.Type: ApplicationFiled: April 27, 2009Publication date: October 15, 2009Applicant: GETRAG Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KGInventors: Martin Seufert, Tobias Kalisch, Ralf Hettich
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Patent number: 7591755Abstract: A hydraulic circuit for a toroidal transmission comprises: a) a single pump, b) a main pressure controller connected to the pump to generate a main line pressure in a main line, c) a roller controller connected to the main line to generate two roller control pressures from the main line pressure, d) at least one hydraulic roller actuator for adjusting a roller in a toroidal space set up by two disks, the roller actuator being connected to the roller controller, e) a disk controller connected to the main line, a disk control pressure being generated in the disk controller from the main line pressure, and f) at least one hydraulic disk actuator for axially adjusting at least one of the disks, the disk actuator being connected to the disk controller.Type: GrantFiled: November 10, 2006Date of Patent: September 22, 2009Assignees: GETRAG Getriebe-und Zahnradfabrik Hermann Hagenmeyer GmbH, Cie KG and Bayerische Motorenwerke AktiengesellschaftInventors: Gunther Petrzik, Andreas Wild, Lothar Wolf, Thomas Kress
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Patent number: 7487864Abstract: A hydraulic circuit for a dual clutch transmission for motor vehicles comprises a first and a second clutch that can be hydraulically actuated and a first and a second pressure control valve for regulating the clutch pressure of the first and second clutches. In this circuit there is provided a single central valve, which in a first position connects the pressure control valves to the respective clutches and in a second position disengages the pressure control valves from the respective clutches.Type: GrantFiled: January 2, 2007Date of Patent: February 10, 2009Assignee: Getrag Getriebe-und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KGInventors: Stefan Kohlhaas, Thomas Voss
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Patent number: 7487691Abstract: An actuator arrangement for a twin-clutch transmission has a first and a second partial transmission. The first partial transmission contains odd forward gear stages and the second partial transmission contains even forward gear stages. At least one first and one second selector drum have in each case one controllable drive motor and at least one control cam. Each control cam is assigned at least one cam follower. The control cam of at least one selector drum encircles through at least 360°. The associated drive motor is designed to drive said selector drum through at least 360°. The gear stages are distributed on the two selector drums, and arranged on the control cams, in such a way that at least one direct multiple shift can be carried out.Type: GrantFiled: May 21, 2007Date of Patent: February 10, 2009Assignee: Getrag Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KGInventors: Stefan Kapp, Reinhard Schaarschmidt, Georg Burgardt, Oliver Eppler
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Patent number: 7472617Abstract: A step-by-step variable transmission has a housing, a drive input shaft device, a drive output shaft and a countershaft. A plurality of gearwheel sets are mounted on the drive input shaft and on the countershaft. The gearwheel sets can be shifted so as to establish different gear stages by means of respective shift clutches. The countershaft is connected to the drive output shaft by means of a drive output constant wheel set. The drive output shaft is rotatably mounted in the region of its opposite ends on the housing by means of two bearings. At least one of the gearwheel sets is mounted in the region in the axial direction between the two bearings of the drive output shaft.Type: GrantFiled: July 9, 2007Date of Patent: January 6, 2009Assignee: Getrag Getriebe- und Zahnradfabrik Hermann Hagenmeyer GmbH & Cie KGInventor: Oliver Nicklass