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公开(公告)号：US20240361360A1
公开(公告)日：2024-10-31
申请号：US18306333
申请日：2023-04-25
CPC分类号： G01R15/207 , G01R19/0092 , G01R19/10
摘要： A current sensing apparatus includes a planar current conductor with a current shaping section, designed to carry an alternating current (AC) current with a maximum frequency. The current shaping section of the conductor consists of a pair of adjacent legs separated by a slot, which shapes the AC current to flow around the slot in opposite directions. The legs of the current conductor have a width no greater than twice the skin depth of the AC current at a frequency of at least half of the maximum frequency. The apparatus also includes a differential current sensor that measures the directional components of the AC current on opposite sides of the slot. This configuration allows for accurate current sensing while minimizing the effect of the skin effect at high frequencies, making it suitable for use in various applications where a broad range of fundamental frequencies are expected.
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公开(公告)号：US20240241001A1
公开(公告)日：2024-07-18
申请号：US18154462
申请日：2023-01-13
CPC分类号： G01L3/04 , B60L15/20 , B60L2240/421
摘要： A vehicle and a drive system include a method of operating the vehicle. In another exemplary embodiment, a drive system of a vehicle is disclosed. The drive system includes a first sensor, a second sensor and a processor. The first sensor is disposed at a first location of the drive system for measuring a first angle of rotation. The second sensor is disposed at a second location of the drive system for measuring a second angle of rotation. The processor is configured to determine a torque transferred between the first location and the second location based on a difference between the first angle of rotation and the second angle of rotation and control an operation of the drive system based on the torque.
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公开(公告)号：US11873867B1
公开(公告)日：2024-01-16
申请号：US18172446
申请日：2023-02-22
发明人： Clinton E. Carey , Dongxu Li , Edward W. Mellet , Bret M. Olson
IPC分类号： F16D25/0638 , F16D25/10
CPC分类号： F16D25/0638 , F16D25/10
摘要： An electric vehicle transmission includes a housing, a first gear, a second gear, and a first clutch pack supported in the housing. A first actuator is arranged in the housing. The first actuator is coupled with a first actuator member. A second actuator is arranged in the housing. The second actuator is coupled with a second actuator member. A modular actuation system is mounted to the housing. The modular actuation system includes a first energizer member and a second energizer member. The first energizer member is operatively connected to the first actuator and is operable to engage the first gear and the second energizer member is operatively connected to the second actuator and is operable to engage the second gear.
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公开(公告)号：US20230398887A1
公开(公告)日：2023-12-14
申请号：US17839736
申请日：2022-06-14
发明人： Dongxu Li , Lei Hao , Chunhao J. Lee , Suresh Gopalakrishnan , Junfeng Zhao
CPC分类号： B60L53/20 , H02M3/155 , B60L1/02 , B60L2210/10
摘要： Examples described herein provide a method that includes determining whether a vehicle is operating in a first high voltage mode or a second high voltage mode. The method further includes, responsive to determining that the vehicle is operating in the first high voltage mode, providing electric power to an electric motor at a first high voltage and providing electric power to an auxiliary device at a second high voltage that is different than the first high voltage. The method further includes, responsive to determining that the vehicle is operating in the second high voltage mode, providing electric power to the electric motor at the second high voltage and providing electric power to the auxiliary device at the second high voltage.
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公开(公告)号：US11746869B2
公开(公告)日：2023-09-05
申请号：US17557506
申请日：2021-12-21
发明人： Dongxu Li , Leonid Basin
IPC分类号： F16H45/02
CPC分类号： F16H45/02 , F16H2045/0215 , F16H2045/0268
摘要： Presented are torque converters (TC) with planetary-type vibration dampers, methods for making/using such TC assemblies, and vehicles equipped with such TC assemblies. A TC assembly includes a TC housing drivingly connected to a prime mover to receive torque therefrom, and a TC output member drivingly connected to a transmission to transfer torque thereto. Rotatably mounted within an internal fluid chamber of the TC housing are juxtaposed turbine and impeller blades. The impeller blades are rotatably mounted to the housing. A TC clutch is operable to lock the TC housing to the TC output member. A torsional vibration damper, which is disposed within the internal fluid chamber, includes a sun gear attached to the TC output member for unitary rotation, a ring gear attached to the TC clutch for unitary rotation, and a planet carrier intermeshed with the ring and sun gears and attached to the turbine blades for unitary rotation.
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6.发明公开公开(公告)号：US20230166710A1
公开(公告)日：2023-06-01
申请号：US17562169
申请日：2021-12-27
发明人： Norman K. Bucknor , Chunhao J. Lee , Dongxu Li , Lei Hao , Chengwu Duan
CPC分类号： B60W50/06 , B60W10/08 , B60W10/024 , F16H45/02 , B60W2520/04 , B60W2520/105 , B60W2540/10 , B60W2710/024 , B60W2710/081 , B60W2710/083 , F16H2045/0215
摘要： A method for controlling an electric drive unit (EDU) having a motor-driven torque converter includes receiving a request signal indicative of a requested output torque of the EDU, and operating the motor at a target motor speed using the requested output torque. The target motor speed minimizes system losses while achieving the requested output torque. When the requested output torque remains below a calibrated threshold and a turbine speed is less than a corner speed of the motor, a torque converter clutch (TCC) transitions to or remains in a locked state. The controller commands the TCC to transition to an unlocked state to reach the target motor speed, thereby selectively enabling torque multiplication. A powertrain system includes a driven load and the EDU. A computer readable storage medium may include executable instructions for performing the method.
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公开(公告)号：US11247655B2
公开(公告)日：2022-02-15
申请号：US16508823
申请日：2019-07-11
发明人： Dongxu Li , Chunhao J. Lee , Neeraj S. Shidore , Luke D. Shepley , Brenton J. Bergkoetter , Norman K. Bucknor
摘要： A hybrid powertrain system includes an electric machine, a torque converter, a transmission, a hydraulic pump, and a controller, and it is arranged to transfer mechanical power to a driveline. The torque converter includes a clutch, a pump, and a turbine, and the electric machine is rotatably coupled to the hydraulic pump and to the torque converter pump. The hydraulic pump is fluidly connected to the transmission, and the controller is operably connected to the electric machine and the torque converter clutch. The controller is executable to determine an operator command, and control the electric machine to spin the hydraulic pump in a speed control mode and control the torque converter clutch in an open state. Upon achieving a desired minimum pump speed, the torque converter clutch is applied in a slip state and the electric machine is controlled in response to the operator command.
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公开(公告)号：US20210010545A1
公开(公告)日：2021-01-14
申请号：US16508832
申请日：2019-07-11
发明人： Dongxu Li
摘要： A method of shifting a transmission having a lever configuration including input and output nodes, a first node configured for engagement with a first clutch in a first gear state, and a second node configured for engagement with a second clutch in a second gear state. The transmission is capable of clutch-to-clutch shifting from the first to the second gear state without engagement of a third clutch, the third clutch being capable of connecting two of the nodes during a transition from the first to the second gear state so as to urge the first node from a first lever position to a second lever position. In the first gear state, the first clutch is engaged. During a torque phase, disengagement of the first clutch and engagement of the second clutch are initiated, and during an inertia phase, the third clutch is engaged to connect the two nodes.
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公开(公告)号：US10676080B2
公开(公告)日：2020-06-09
申请号：US16126654
申请日：2018-09-10
发明人： Dongxu Li , Norman K. Bucknor , Chunhao J. Lee , Venkata Prasad Atluri , Neeraj Shidore , Farzad Samie , Derek F. Lahr
摘要： Hybrid vehicles and methods of operating the same are disclosed. Example methods may include providing a powertrain for the vehicle, which includes an internal combustion engine configured to provide rotational power to a rotatable input of a transmission by way of a starting device, and an electric motor-generator comprising a rotor configured to selectively provide rotational power to the rotatable input. The method may further include selectively disconnecting the engine from the rotatable input using a disconnect device separate from the starting device, thereby allowing the rotatable input of the transmission to be driven at a speed faster than an output speed of the engine.
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公开(公告)号：US10597022B2
公开(公告)日：2020-03-24
申请号：US15885866
申请日：2018-02-01
发明人： Yue-Yun Wang , Venkata Prasad Atluri , Dongxu Li , Chunhao J. Lee
IPC分类号： G01C23/00 , B60W20/10 , B60W10/06 , B60W10/08 , B60W30/18 , B60W40/12 , B60W50/08 , B60W10/02 , B60W50/00
摘要： Presented are model-based control systems for operating parallel hybrid powertrains, methods for making/using such systems, and motor vehicles with parallel hybrid powertrains and model-based torque and speed control capabilities. A method for controlling operation of a hybrid powertrain includes receiving a command signal for a hybrid powertrain operation associated with a driver input and a current operating mode of the powertrain. A desired output torque for executing the powertrain operation is then determined. The method determines if a speed differential between an engine speed of an engine and a torque converter output speed of a torque converter is less than a calibrated threshold; if so, the method responsively engages a clutch device to operatively connect the engine's output member to the transmission's input member. Engine torque is then coordinated with motor torque such that the sum of the engine and motor torques is approximately equal to the desired output torque.
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