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31.发明授权公开(公告)号：US10358123B2
公开(公告)日：2019-07-23
申请号：US15829043
申请日：2017-12-01
发明人： Chunhao J. Lee , Neeraj S. Shidore , Dongxu Li , Norman K. Bucknor , Farzad Samie , Derek F. Lahr
摘要： Presented are engine-disconnect clutches with attendant control logic, methods for making/operating such disconnect clutches, and hybrid electric vehicles (HEV) equipped with an engine that is coupled to/decoupled from a transmission and electric motor via a disconnect clutch. A representative method for controlling an HEV powertrain includes receiving an HEV powertrain operation command, then determining a clutch mode of a multi-mode clutch device to execute the HEV powertrain operation. This multi-mode clutch device is operable in: a lock-lock mode, in which the clutch device transmits torque to and from the engine; a free-free mode, in which the clutch device disconnects the engine's output member from the transmission's input member, preventing torque transmission to and from the engine; a lock-free mode, in which the clutch device transmits torque from but not to the engine; and, a free-lock mode, in which the clutch device transmits torque to but not from the engine.
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公开(公告)号：US20190176607A1
公开(公告)日：2019-06-13
申请号：US15840411
申请日：2017-12-13
发明人： Derek F. Lahr , Farzad Samie , Chunhao J. Lee , Dongxu Li , Norman K. Bucknor
摘要： A powertrain includes an engine and a transmission. A vehicle includes a body structure and the powertrain supported by the body structure. The powertrain is configured to propel the body structure. The engine includes an output shaft, and the transmission includes an input member. The powertrain further includes a torque converter operable between the output shaft and the input member. The torque converter includes a pump and a turbine. The powertrain also includes a motor-generator operable as a motor and a generator. The input member of the transmission is connected to the turbine such that torque from the torque converter is transferrable to the input member. The input member of the transmission is coupled to the motor-generator such that torque is transferred between the input member and the motor-generator.
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33.发明申请公开(公告)号：US20190170249A1
公开(公告)日：2019-06-06
申请号：US15829294
申请日：2017-12-01
发明人： Ying Huang , Chunhao J. Lee , Jian Yao , Chengwu Duan
IPC分类号： F16H61/662 , B60W10/107 , B60W20/00
摘要： A method of controlling a continuously variable transmission includes monitoring powertrain operating conditions, and calculating, via an electronic controller, a commanded clamping force based on the powertrain operating conditions, wherein the commanded clamping force includes a commanded clamping force of an input pulley and a commanded clamping force of an output pulley on the endless rotatable device. The method also includes activating, via the electronic controller, at least one of the input actuator and the output actuator such that an axial component of the input wedge force and the axial force of the input actuator together provide the commanded clamping force of the input pulley, and an axial component of the output wedge force and the axial force of the output actuator together provide the commanded clamping force of the output pulley.
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公开(公告)号：US10166975B2
公开(公告)日：2019-01-01
申请号：US15387697
申请日：2016-12-22
发明人： Derek F. Lahr , Chunhao J. Lee , Farzad Samie , Dongxu Li , Dmitriy Bruder
摘要： A transmission includes a housing, and a transmission input member. A torque converter includes a pump and a turbine. The turbine of the torque converter is connected to the transmission input member. A lock-up clutch selectively connects the pump and the turbine. A cover is connected to and rotatable with the pump. The cover at least partially defines an interior of the torque converter. A torque converter input member passes through the cover. A one way clutch interconnects the torque converter input member and the cover. An engine brake friction clutch is disposed within the interior of the torque converter. The engine brake friction clutch selectively interconnects the torque converter input member and the cover in torque communication to transfer a braking torque therebetween.
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公开(公告)号：US10082206B2
公开(公告)日：2018-09-25
申请号：US15346349
申请日：2016-11-08
发明人： Chi-Kuan Kao , Chunhao J. Lee
CPC分类号： F16H61/66259 , F16H9/18 , F16H59/68 , F16H59/74 , F16H2059/366 , F16H2061/009
摘要： A powertrain assembly includes a continuously variable transmission having a variator, an input member, an output member and a torque converter clutch. An input sensor configured to receive a signal from the input member. An output sensor is configured to receive a signal from the output member. The assembly includes a controller having a processor and tangible, non-transitory memory on which is recorded instructions for executing a method of controlling the continuously variable transmission. If the torque converter clutch is locked, the controller is programmed to obtain respective readings at predefined time intervals which are collected for the respective signals from the input sensor and the output sensor, until a predefined time window is reached. First and second fast Fourier transforms are obtained of the respective signals. The continuously variable transmission is controlled based at least partially on the first and second fast Fourier transforms.
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公开(公告)号：US10017044B2
公开(公告)日：2018-07-10
申请号：US15590462
申请日：2017-05-09
发明人： Derek F. Lahr , Farzad Samie , Norman K. Bucknor , Chunhao J. Lee , Dongxu Li , Chandra S. Namuduri , Alexandru Rajala
CPC分类号： B60K6/50 , B60K6/20 , B60K6/40 , B60K6/48 , B60K6/54 , B60K6/547 , B60K2006/4825 , B60K2006/4833 , F16H7/02 , F16H7/12 , F16H7/1281 , F16H2007/0808 , F16H2007/0865 , F16H2007/0874 , F16H2007/0893 , F16H2007/0897 , Y02T10/6221
摘要： A powertrain system is described, and includes an internal combustion engine including a crankshaft and an electric machine including a rotatable shaft, wherein the rotatable shaft is coupled to a motor pulley. A torque converter includes an impeller and a pump, wherein the pump is coupled to an outer sheave. An off-axis mechanical drive system includes the outer sheave of the torque converter rotatably coupled to the motor pulley of the electric machine. The electric machine is coupled to the pump of the torque converter via the off-axis mechanical drive system, and the crankshaft is coupled to the pump of the torque converter via a clutch.
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37.发明授权公开(公告)号：US09994225B1
公开(公告)日：2018-06-12
申请号：US15479372
申请日：2017-04-05
发明人： Chunhao J. Lee , Farzad Samie
CPC分类号： B60W30/19 , B60W10/02 , B60W10/06 , B60W2510/0241 , B60W2510/0275 , B60W2510/0283 , B60W2710/021 , B60W2710/0666 , F16D41/16 , F16D48/06 , F16D2500/10412 , F16D2500/10456 , F16D2500/106 , F16D2500/30406 , F16D2500/30412 , F16D2500/30415 , F16D2500/30426 , F16D2500/70426
摘要： A powertrain system includes a geartrain configured to transfer mechanical power between an internal combustion engine, torque machines and a driveline by activation of a synchronous engagement clutch. A method includes commanding activation of the synchronous engagement clutch, including commanding operations of the engine and the first and second torque machines to control members of the clutch, including monitoring speeds thereof. A magnitude of clutch slip is determined. A zero-slip feedback control routine is executed when the clutch slip approaches a zero-slip state, wherein the zero-slip feedback control routine is operative to control the engine and the first and second torque machines to control the rotational speeds of the opposed first and second members to achieve zero clutch slip. The synchronous engagement clutch is activated when the clutch slip is less than a threshold level associated with the zero-slip state.
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公开(公告)号：US20180080529A1
公开(公告)日：2018-03-22
申请号：US15829259
申请日：2017-12-01
发明人： Jian Yao , Chengwu Duan , Chunhao J. Lee , Derek F. Lahr , Farzad Samie
IPC分类号： F16H9/18 , F16H61/662 , F15B15/12 , F16H57/04
CPC分类号： F16H9/18 , B60Y2300/18016 , F15B15/125 , F16H9/26 , F16H55/56 , F16H57/0489 , F16H57/12 , F16H61/662 , F16H61/66227 , F16H61/66259 , F16H61/6648 , F16H63/062 , F16H63/065 , F16H2312/14
摘要： A powertrain has a continuously variable transmission including a shaft rotatable about an axis. The CVT further comprises a variator assembly that includes a pulley supported on the shaft. The pulley has a movable sheave with a ramp surface. The movable sheave is axially movable on the shaft. The variator assembly also includes an endless rotatable device frictionally engaged with the movable sheave. An actuator mechanism includes a wedge component supported on the shaft. The wedge component has a wedge surface that automatically engages the ramp surface when torque on the shaft is in a first direction. The wedge surface applies a wedge force on the ramp surface. The actuator mechanism further includes an actuator that is operatively connected to the movable sheave and is activatable to apply a force on the movable sheave.
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公开(公告)号：US20170328456A1
公开(公告)日：2017-11-16
申请号：US15587790
申请日：2017-05-05
发明人： Farzad Samie , Derek F. Lahr , Chunhao J. Lee
CPC分类号： F16H45/02 , F16D1/104 , F16D3/12 , F16D3/72 , F16D3/77 , F16D25/0638 , F16D27/10 , F16D28/00 , F16D41/06 , F16D41/064 , F16D41/12 , F16D41/14 , F16H41/24 , F16H2045/002 , F16H2045/0273
摘要： Disclosed are engine flexplates with integrated engine disconnects, methods for making and for using such flexplates, and motor vehicles with an engine flexplate having an integrated engine disconnect device. An engine flexplate assembly is disclosed for operatively coupling an engine to a hydrokinetic torque converter. The flexplate assembly includes a disk-shaped body with a central hub that rigidly attaches on the fore side thereof to the engine output shaft for common rotation therewith. A disconnect device, which is positioned on the aft side of the disk-shaped body, includes concentric inner and outer races. The outer race is rigidly attached to the disk-shaped body for common rotation therewith. The inner race rigidly attaches to the front cover of the TC housing for common rotation therewith. The disconnect device operatively disconnects the engine output shaft from the TC housing front cover when a torque transmitted therebetween reverses direction.
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公开(公告)号：US20170159813A1
公开(公告)日：2017-06-08
申请号：US15346349
申请日：2016-11-08
发明人： Chi-Kuan Kao , Chunhao J. Lee
IPC分类号： F16H61/662 , F16H59/74 , F16H59/68 , F16H9/18
CPC分类号： F16H61/66259 , F16H9/18 , F16H59/68 , F16H59/74 , F16H2059/366 , F16H2061/009
摘要： A powertrain assembly includes a continuously variable transmission having a variator, an input member, an output member and a torque converter clutch. An input sensor configured to receive a signal from the input member. An output sensor is configured to receive a signal from the output member. The assembly includes a controller having a processor and tangible, non-transitory memory on which is recorded instructions for executing a method of controlling the continuously variable transmission. If the torque converter clutch is locked, the controller is programmed to obtain respective readings at predefined time intervals which are collected for the respective signals from the input sensor and the output sensor, until a predefined time window is reached. First and second fast Fourier transforms are obtained of the respective signals. The continuously variable transmission is controlled based at least partially on the first and second fast Fourier transforms.
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