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公开(公告)号：US20170248172A1
公开(公告)日：2017-08-31
申请号：US15516978
申请日：2015-09-09
申请人： AUDI AG
IPC分类号： F16D11/14
CPC分类号： F16D11/14 , F16D23/12 , F16D2011/006 , F16D2300/18 , F16D2500/1022
摘要： A dog clutch having two clutch members provided with claws or teeth, one of which is movable, as well as a positioning device for engaging and disengaging the clutch by a positioning movement of the movable clutch member. In order to establish a proper engaging of the dog clutch, a sensor is arranged along the movement path of the movable clutch member, which detects the movement of the clutch member into the engaged state, while the clutch member is provided with an activating contour which, upon engaging the clutch, moves past the sensor, which is preferably an electromagnetic actuator for holding the movable clutch member in the disengaged state of the clutch.
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2.发明申请公开(公告)号：US20170313187A1
公开(公告)日：2017-11-02
申请号：US15523959
申请日：2015-11-05
申请人： AUDI AG
CPC分类号： B60K23/08 , B60K17/352 , B60K2023/0833 , B60K2023/0841 , B60K2023/0858 , B60K2023/0883 , B60Y2306/09 , B60Y2400/421
摘要： A device and a method for operating a multi-axle drive train for a motor vehicle. A first axle and a second axle are operatively connected, at least temporarily, to a drive device. When the second axle is decoupled from the drive device and a request for multi-axle drive with a first value is present, the second axle is coupled to the drive device only when a noise-masking event occurs, or when the second axle is coupled to the drive device and the request for multi-axle drive is absent, the second axle is decoupled from the drive device only when the noise-masking event occurs.
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3.发明申请公开(公告)号：US20170313186A1
公开(公告)日：2017-11-02
申请号：US15522018
申请日：2015-10-29
申请人： AUDI AG
IPC分类号： B60K23/08 , B60K17/344
摘要： A multi-axle drive device and method for operating a multi-axle drive device. The multi-axle drive device is provided with a synchronization clutch present in an operational connection between a first output shaft and a connecting shaft and at least one disconnecting clutch present in an operational connection between the connecting shaft and a second output shaft. The synchronization clutch and the disconnecting clutch are opened in a first operating state and closed in a second operating state. At the same time, with an intended change from the second operating state to the first operating state, the synchronization clutch is maintained at least partially opened and the separation clutch is maintained closed, so that, when a first operating mode is carried out, the disconnecting clutch is opened, and when a second operating mode is carried out, the synchronization clutch is closed again.
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4.发明申请公开(公告)号：US20170313185A1
公开(公告)日：2017-11-02
申请号：US15523762
申请日：2015-11-05
申请人： AUDI AG
CPC分类号： B60K17/352 , B60K17/02 , B60K17/22 , B60K23/0808 , B60K2023/0833
摘要： A device and method for operating a multi-axle powertrain for a motor vehicle, with a first axle being permanently in operative connection and a second axle being at least temporarily in operative connection by a drive device via a clutch coupling. It is provided that, when the second axle is decoupled from the drive device and the starting clutch is disengaged, an expected wheel force is predictively ascertained. The determination of the wheel force takes into account a torque caused by a mass moment of inertia of the drive device, and the second axle is coupled with the drive device if the expected wheel force surpasses a maximum wheel force.
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5.发明申请公开(公告)号：US20180304746A1
公开(公告)日：2018-10-25
申请号：US15524017
申请日：2015-11-04
申请人： AUDI AG
IPC分类号： B60K23/08
CPC分类号： B60K23/0808 , B60K23/08 , B60K2023/0833 , B60K2023/0858 , B60Y2400/421
摘要： A device and a method for operating a multi-axle drive device. The multi-axle drive device has a synchronizing clutch present in an operative connection between a first output shaft and a connecting shaft and at least one separating clutch present in an operative connection between the connecting shaft and a second output shaft. The synchronizing clutch and the separating clutch are disengaged in a first operating state and are engaged in a second operating state. When a shifting variable exceeds a first shifting threshold during the first operating state, the synchronizing clutch is at least partially engaged and the separating clutch is engaged only when a second shifting threshold is exceeded.
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6.发明申请公开(公告)号：US20180273041A1
公开(公告)日：2018-09-27
申请号：US15524372
申请日：2015-11-05
申请人： AUDI AG
IPC分类号： B60W30/18
CPC分类号： B60W30/18181 , B60K23/0808 , B60W2520/403 , B60W2720/403
摘要： A device and a method for operating a multi-axle drive train for a vehicle. A first axle is operatively connected permanently and a second axle is operatively connected at least intermittently via a clutch to a drive device. For the second axle coupled to the drive device, a maximum torque of the drive device is reduced by a specific safety value. At drive start, the safety value is set to a specific initial value and subsequently is reduced or increased throughout a specific period of time.
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公开(公告)号：US20170341511A1
公开(公告)日：2017-11-30
申请号：US15524639
申请日：2015-11-06
申请人： AUDI AG
CPC分类号： B60K23/0808 , B60K23/08 , B60K2023/0825 , B60K2023/0833 , B60Y2400/42 , B60Y2400/421 , F16H61/12
摘要： A method for operating a motor vehicle including an all-wheel drive that can be enabled and disabled, and a drive train including two clutches actuated by a control unit for enabling and disabling the all-wheel drive, and components rotating between the two clutches, which components are driven when the all-wheel drive is enabled and are uncoupled from the remaining drive train when the all-wheel drive is disabled. In order to allow early detection of defects and, in particular, bearing defects of the rotating components, and to determine the applied drag torque even without knowing the oil temperature, in one embodiment, when the all-wheel drive is disabled, the rotational speed (n) of at least one of the uncoupled components is measured in a time interval, and an angular acceleration of the uncoupled components is determined therefrom.
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