• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The device (3) has an electrical machine (5) arranged to a frictional switch element designed as a brake (6). Torque is introduced into a force flow for synchronization of an automatic transmission device (4) with respect to a target transmission, which is introduced by an up-shifting requirement. The torque is introduced into the force flow by the electrical machine and by the brake and is presettable in a region of a control and regulating device (8) actuating the electrical machine and the brake. The switch elements of the automated transmission device are designed as jaw clutches and as synchronizers. An independent claim is also included for a method for actuation of a transmission device.
    公开号:SE534307C2
    申请号:SE0950569
    申请日:2009-07-29
    公开日:2011-07-05
    发明作者:Johannes Kaltenbach；Christian Mittelberger
    申请人:Zahnradfabrik Friedrichshafen；
    IPC主号:
    专利说明:

    534 30 which the speed difference has automatically decreased due to frictional torque acting in the vehicle driveline.
    If the known transmission devices in the case of automated gear transmission devices have so-called synchronizations and do not provide an electric machine with sufficient torque for the desired active synchronization of the transmission device due to an unfavorable operating condition, the rotational difference in the synchronization. However, this may lead to undesirably high loads on the synchronizing rings of the synchronizations and to a shortening of the service life of the synchronizations. The object of the present invention is therefore to provide a transmission device for a vehicle driveline with an automated gear transmission device and with an electric machine as well as a method for driving the transmission device, with which predefined gear times can at least almost be set, even under operating conditions of the transmission device, in which the functionality of the electric machine is not fully available.
    According to the invention, this object is fulfilled with a transmission device and with a method with the features according to claims 1 and 5, respectively.
    The transmission device for a vehicle driveline according to the invention is designed with an automated gear transmission device, which is designed to provide different gear stages with gears which can be connected via form-locking gear elements in a power flow and can be disconnected from it, with an electric motor. can be led into the power flow during upshifts, in order to at least partially equalize speed differences in the case of at least one target gear ratio required to carry out the upshift of the closing gear element.
    According to the invention, a friction-locking gear element designed as a brake is arranged for the electric machine, with which for synchronization with respect to a target gear to be entered by a gearing requirement for the automated gear transmission device to be synchronized also a torque can be conducted into force. in the power flow via the electric machine and via the brake can be preselected by a control and regulating device which operates the electric machine and the brake.
    This means that the transmission device according to the invention, in addition to the electric machine, is designed with a brake or transmission brake arranged for the automated gear transmission device, with which the electric 10 15 20 25 30 35 534 30 the machine during a synchronization of the automated gear transmission device triggered by an upshift request can be supported depending on the operating condition.
    Thus, for example, the torque to be conducted into the power of the transmission device at gears for synchronization of the transmission device or the automated gear transmission device can be generated with the control and regulating device depending on the operating condition at least in part by the electric machine and the other part of the brake. In the case of the synchronizing torque generated in the brake, it can be used to shorten the synchronizing time, if in the case of the electric machine the maximum possible synchronizing torque is generated and that the additional synchronizing torque of the brake gives an excess of a synchronizing torque at a normal synchronizing time.
    In addition, it is possible to carry out upshifts with reproducible shift times with the transmission device according to the invention, since oscillations in the case of generatable synchronizing torques in the electric machine can be easily compensated by the transmission brake.
    In addition, the design of the transmission device with the electric machine and the additional transmission brake makes it possible in a simple manner to dimension both the electric machine as also a preferably arranged electric storage device, as well as the transmission brake, less than in practice for known vehicle drivelines, which are designed only with an electric machine or only with a transmission brake and to synchronize the gear transmission device to the desired extent for a gear shift requested by a gear and to be able to carry out the gear within predetermined gear times.
    In addition, upshifts regarding their shift times are reproducible to an improved extent, as by means of the oscillations of the brake the maximum available torque, which depends, among other things, on the state of charge of an associated electric storage device and an operating temperature of the electric machine, can be equalized.
    In general, the design of the electric machine and the transmission brake in practice for known vehicle drivelines always depend on a maximum load to be supported in a synchronization of the automated gear transmission device carried out after a shift request, which load is only supported in especially unfavorable operating conditions. a vehicle driveline, why the electric 10 15 20 25 30 35 534 30 the machine or the transmission brake are each designed for undesirably high effects and thereby cause unnecessarily high manufacturing costs as well as a great need for installation space.
    An advantageous embodiment of the transmission device according to the invention has a coupling device, for which a connection between a drive machine of a vehicle driveline and the electric machine as well as the gear transmission device is divisible. Thereby, the transmission device can be synchronized independently of the action of the drive machine via the electric machine and / or the transmission brake.
    An embodiment of the transmission device which is characterized by a structurally simple construction and is the cost advantage, in the case of the automated gear transmission device, is designed with form-locking gear elements designed as claw couplings.
    The synchronization in order to achieve the target gear ratio requested by the transmission for the closing gear elements can in the case of the gear elements be further supported by a further advantageous embodiment of the transmission device according to the invention, when the gear elements of the automated gear transmission device are designed as synchronizations.
    In the method according to the invention for driving a transmission device according to the invention, the gear element to be closed is at least partially synchronized to provide the target gear ratio required of the automated gear device by introducing a torque generated by the electric machine and / or the brake into the power of the transmission device. in order to observe predefined gear upshifts of the transmission device even with limited functionality of the electric machine and in the case of the brake be able to reduce generated loss effects due to drive till to a minimum. The latter advantage is achieved in that the braking energy generated for the synchronization can be made available with frictionless and generative operation of the electric machine and the applied braking energy can be used to generate electrical energy and can be stored in an energy magazine.
    In addition, predefined shift times can be shortened depending on the operating condition during parallel operation of the electric machine and the brake, if in the case of the electric machine the maximum possible torque is led into the transmission device's requirement and in the case of the brake additional torque is generated and also led in i krañ fl ödet.
    In addition, it is possible with the method according to the invention to synchronize the transmission device with respect to the automated shifting device only via the brake in the event of a total loss of the functionality of the electrical machine, whereby requested upshifts can be carried out with acceptable shift times despite a loss. of the electrical machine.
    In a variant of the method according to the invention, the coupling device is opened when there is a request for gearing, in order to be able to carry out the synchronization of the gear elements of the automated gear transmission device without input from the drive motor side.
    The form-locking gear element to be closed is synchronized in a further advantageous variant of the method according to the invention mainly with the electric machine, in order to convert the braked rotational energy during generative operation of the electric machine without friction into electric energy and charge an electric energy magazine arranged to the electric machine. .
    Further advantages and advantageous developments of the invention appear from the claims and the exemplary embodiment are described in principle with reference to the drawing.
    The single drawing figure shows a highly schematic representation of a vehicle driveline provided with a transmission device according to the invention.
    The figure shows a vehicle driveline 1, which comprises a drive motor 2 designed as an internal combustion engine and a transmission device 3.
    The transmission device 3 is hereby provided with an automated gear transmission device 4, an electric machine 5, a friction-locking gear element 6 designed as a brake and a coupling device 7. The automated gear transmission device 4 is designed with gear pairs to provide different gear steps, which gear steps via front-locking gear elements can be connected to the power flow of the vehicle driveline 1 and can be disconnected from this and are designed as an intermediate gear construction. When there is a request for an upshift, a torque can be conducted into the power flow of the vehicle driveline 1 by means of the electric machine 5, in order to at least partially equalize the speed differences in the case of at least one target gear required by the upshift to close the pre-locking gear element.
    The brake 6 is arranged for the electric machine 5, in order to be able to synchronize the target gear, which is to be entered through a request for gearing, and also to be able to introduce a torque into the power flow of the vehicle driveline 1, the torque being introduced via the electric machine 5 and via the brake 6 can be delivered to a control and regulating device 8 which operates the electric machine 5 and the brake 6. 10 15 20 25 30 35 534 30 In the case of the coupling device 7, a connection between the drive motor 2 of the vehicle driveline 1 and the electric machine 5 as well as the gear transmission device 4 arranged directly on a transmission input shaft 9 is divisible, in order to carry out the synchronization of the gear elements of the gear transmission device 4 via the electric machine 5 and / or the brake 6 independent of the drive condition of the drive motor 2.
    The vehicle driveline 1, which has a so-called integrated start-generator system with a switching device, is actively synchronized when there is a shift request, before entering the target gear ratio required in the case of the transmission input shaft 5 or in the case of the automated gearbox of the transmission device 3. transmission device 4, via the electric machine 5 and / or the brake 6, whereby the synchronization of the gear transmission device 4 and the transmission input shaft 9 preferably takes place via the electric machine 5, when the transmission input shaft 9 can be braked during the synchronization process, when the electric machine 5 frictionlessly by applying a braking torque and the electrical energy generated by the electrical machine 5 can be stored in an electrical repair device 10 provided for the electrical machine 5 and / or in a vehicle network.
    In the case of the control device 8, when driving the vehicle driveline 1 among the arm, a current operating state of the electric machine 5, for example an operating temperature of the electric machine 5, and a charging state of an electric storage device 10 arranged for the electric the machine 5.
    If, when there is a request for upshifting, an operating temperature of the electric machine 5 is determined, which is above a pre-defined temperature threshold, whereby the maximum braking torque can not be provided via the electric machine 5, the synchronization of the gear element to be closed is supported. of the automated gear transmission device 4 by means of the brake 6, in order to be able to guarantee a pre-defined gear change time or to enable an upshift of the transmission device with an at least acceptable gear change time.
    If, when there is a request for upshifting, a state of charge of the electric storage device 10 provided for the electric machine 5 is determined, where the electrical energy generated by the electric machine 5 during the synchronization process of the gear elements of the gear transmission device 4 can not be completely delivered to the storage device 10. , the required torque can not be generated, with respect to the electric machine 5, required for the synchronization of the gear transmission device 4. Then the synchronization of the gear element to be closed with the gear transmission device 4 is supported by appropriate operation of 10 15 20 25 30 35 534 30 brake 6 on the steering and control device side. In addition, the synchronization of the gear element of the gear transmission device 4 to be closed is also supported in the event of a total loss of the functionality of the electrical machine 5 by means of the brake 6.
    Accordingly, there is the possibility with the transmission device 1, to synchronize the gear transmission device 4 and the transmission input shaft 9, respectively, when there is a request for an upshift even at operating conditions of the vehicle driveline 1, in which the functionality of the electric machine 5, for example due to a defect an electrical system comprising the electric machine 5 and the storage device 10 or a limitation of the braking torque which can be provided by the electric machine 5 due to a dry high state of charge of the electric storage device 10, is at least limited.
    In addition, with the transmission device 3 described above, it is possible, in certain operating conditions of the vehicle driveline 1, to simply shorten a synchronization time on the transmission input shaft 9 and to achieve the target gear ratio required to close the form-locking gear element of the automated gear unit 4. a single synchronization on the electric machine side, in that the maximum torque generated by the electric machine 5 is led into the crane of the vehicle driveline 1 and the transmission input shaft 9 is further braked by an generated braking torque with respect to the brake 6 and synchronized.
    权利要求:
    Claims (10)
    [1]
    1. l. Transmission device (3) for a vehicle driveline (l) with an automated gear transmission device (4), which is designed with gear pairs which can be engaged via gear elements in a power fl desert and out of this to provide different gear stages and with a electric machine (5), with which a torque can be brought into force fl the fate of gears, in order to at least partially even out speed differences in terms of at least giving the target gear required during the gearing to the closing gear elements, characterized in that the electric machine (5) has a friction-locking gear element designed as a brake (6), with which for synchronization even a torque can be led into force fl with respect to a target gear to be added to the automatic gear transmission device (4) to be synchronized, whereby the torque initiated in the power flow via the electric machine (5) and via the brake (6) can be preselected by a control and regulating device (8) which operates the the electric machine (5) and the brake (6).
    [2]
    Transmission device according to claim 1, characterized in that a coupling device (7) is provided, with which a connection between a drive motor (2) of a vehicle driveline (1) and the electric machine (5) as well as the gear transmission device (4) is divisible.
    [3]
    Transmission device according to Claim 1 or 2, characterized in that the gear elements of the automated gear transmission device are designed as claw couplings.
    [4]
    Transmission device according to Claim 1 or 2, characterized in that the gear elements of the automated gear transmission device arranged to give the transmission are designed as synchronizations.
    [5]
    Method for operating a transmission device (3) according to any one of the preceding claims, characterized in that the target gear ratio required for the closing gear element of the automated gear transmission device (4) is at least partially synchronized by introducing a torque generated by the electric machine ( 5) and / or the brake (6) in the crane of the transmission device (3).
    [6]
    Method according to claim 5, characterized in that the coupling device (7) is opened when there is a request for upshifting.
    [7]
    Method according to Claim 5 or 6, characterized in that the gear element to be closed is preferably synchronized by the electric machine (5). lO 15 20 534 307
    [8]
    Method according to one of Claims 5 to 7, characterized in that a synchronization of the gear element to be closed is supported by the brake (6), above a predefined temperature threshold for the operating temperature of the electrical machine (5).
    [9]
    Method according to one of Claims 5 to 8, characterized in that the synchronization of the gear element to be closed is supported by the brake (6), depending on a state of charge of an electric storage device (10) arranged for the electric machine (5).
    [10]
    Method according to one of Claims 5 to 9, characterized in that the synchronization of the gear element to be closed is supported by the brake (6) in the event of a failure of the electric machine (5).
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    同族专利:
    公开号 | 公开日
    SE0950569L|2010-02-02|
    DE102008040918A1|2010-02-04|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE58904778D1|1988-04-29|1993-07-29|Volkswagen Ag|STEPPING GEARBOX.|
    SE522166C2|2002-05-17|2004-01-20|Volvo Lastvagnar Ab|Procedure for gearing up in motor vehicles and drive units in motor vehicles|DE102010039138A1|2010-08-10|2012-02-16|Zf Friedrichshafen Ag|Method for selecting synchronizing elements in automated transmissions|
    DE102010063027A1|2010-12-14|2012-06-14|Zf Friedrichshafen Ag|A method for operating a transmission device of a vehicle drive train in the presence of a request for a ratio change|
    DE102010063028A1|2010-12-14|2012-06-14|Zf Friedrichshafen Ag|Method for operating a transmission device of a vehicle drive train with at least one positive-locking switching element and with a plurality of frictional switching elements|
    DE102010063029A1|2010-12-14|2012-06-14|Zf Friedrichshafen Ag|Method for operating a transmission device of a vehicle drive train|
    法律状态:
    2021-03-02| NUG| Patent has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    DE200810040918|DE102008040918A1|2008-08-01|2008-08-01|Transmission device for vehicle drive train, has electrical machine arranged to frictional switch element, where torque is presettable in region of control and regulating device actuating electrical machine and brake|
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