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公开(公告)号：US20190170231A1
公开(公告)日：2019-06-06
申请号：US15829287
申请日：2017-12-01
发明人： Chengwu Duan , Chunhao J. Lee , Jian Yao , Ying Huang , Derek F. Lahr , Farzad Samie
CPC分类号： F16H37/022 , F16H3/54 , F16H9/18 , F16H9/24 , F16H25/186 , F16H59/46 , F16H61/0202 , F16H61/66272 , F16H63/065 , F16H63/067 , F16H2037/023 , F16H2059/465 , F16H2200/2005 , F16H2200/2035
摘要： A continuously variable transmission (CVT) comprises a shaft rotatable about an axis, and variator assembly, and an actuator mechanism. The variator assembly includes a pulley supported on the shaft and having a ramp surface, and an endless rotatable device frictionally engaged with the pulley. The ramp surface inclines in an axial direction along the axis toward the endless rotatable device. The CVT further comprises an actuator mechanism that includes a wedge component that has a wedge surface interfacing with the ramp surface, and a rotary piston operatively connected to the wedge component. The rotary piston defines a first fluid chamber pressurizable to apply a rotational force that provides relative motion between the ramp surface and the wedge surface resulting in a wedge force on the ramp surface and a clamping force of the endless rotatable device on the pulley.
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公开(公告)号：US20180281784A1
公开(公告)日：2018-10-04
申请号：US15475450
申请日：2017-03-31
发明人： Ying Huang
摘要： Examples of techniques for enhancing vehicle-to-everything applications are disclosed. In one example implementation, a method includes calculating, by a processing device, a threat level for a driver of a vehicle based on a driver profile for the driver. The method further includes determining, by the processing device, whether the threat level is indicative of an unsafe condition. The method further includes initiating, by the processing device, an intervention activity based at least in part on determining that the threat level is indicative of an unsafe condition.
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3.发明授权公开(公告)号：US10473213B2
公开(公告)日：2019-11-12
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： F16H9/18 , F16H61/662 , B60W20/00 , B60W10/107 , F16H59/14 , F16H59/42 , F16H59/40 , F16H59/46 , F16H59/48 , F16H59/54 , F16H59/70
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：US20180320768A1
公开(公告)日：2018-11-08
申请号：US15587796
申请日：2017-05-05
发明人： Chengwu Duan , Robert J. Gonzales , Ying Huang , Jian Yao
CPC分类号： F16H37/021 , F16H9/16 , F16H37/06 , F16H2200/0008
摘要： A multiple-mode continuously-variable transmission (CVT) assembly for connecting to an external power-source is disclosed. The assembly includes a continuously-variable speed-ratio unit having an input member and a multiple fixed speed-ratio unit having another input member, wherein the multiple fixed speed-ratio unit is operatively connected to the continuously-variable speed-ratio unit. The assembly also includes a first torque-transmitting device operatively connected to each of the input members of the continuously-variable speed-ratio unit and the multiple fixed speed-ratio unit. The first torque-transmitting device is configured to receive an input torque from the external power-source. The assembly also includes an output member operatively connected to each of the continuously-variable speed-ratio unit and the multiple fixed speed-ratio unit and configured to carry an output torque from the assembly. A motor vehicle having such a multiple-mode CVT assembly is also disclosed.
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公开(公告)号：US10473200B2
公开(公告)日：2019-11-12
申请号：US15829287
申请日：2017-12-01
发明人： Chengwu Duan , Chunhao J. Lee , Jian Yao , Ying Huang , Derek F. Lahr , Farzad Samie
IPC分类号： F16H3/54 , F16H37/02 , F16H25/18 , F16H63/06 , F16H61/662 , F16H61/02 , F16H9/24 , F16H59/46
摘要： A continuously variable transmission (CVT) comprises a shaft rotatable about an axis, and variator assembly, and an actuator mechanism. The variator assembly includes a pulley supported on the shaft and having a ramp surface, and an endless rotatable device frictionally engaged with the pulley. The ramp surface inclines in an axial direction along the axis toward the endless rotatable device. The CVT further comprises an actuator mechanism that includes a wedge component that has a wedge surface interfacing with the ramp surface, and a rotary piston operatively connected to the wedge component. The rotary piston defines a first fluid chamber pressurizable to apply a rotational force that provides relative motion between the ramp surface and the wedge surface resulting in a wedge force on the ramp surface and a clamping force of the endless rotatable device on the pulley.
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公开(公告)号：US10295056B2
公开(公告)日：2019-05-21
申请号：US15532264
申请日：2014-11-26
发明人： Ying Huang , Chengwu Duan
IPC分类号： F16H61/662 , F16G1/28 , F16G5/20 , F16H9/24 , F16H9/18 , F16H55/17 , F16H55/56 , F16H61/00 , F16H59/46
摘要： A vehicle includes a power plant, continuously variable transmission (CVT), drive wheels, sensors, and controller. The CVT achieves a fixed gear/positive engagement and friction drive modes, and includes an input member that receives input torque from the power plant, an output member, and a variator assembly having drive and driven variator pulleys. The pulleys are connected to each other via an endless rotatable drive element, and to a respective one of the input and output members. Pulley actuators change a CVT speed ratio. The controller calculates a relative slip of the pulleys using measured speeds and displacements from the sensors, reduces the relative slip until the relative slip is below a calibrated speed limit or within a calibrated speed range via actuator control signal to the pulley actuators, and commands the fixed gear/positive engagement mode via positive engagement control signals to the CVT until the relative slip reaches zero.
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公开(公告)号：US20180080530A1
公开(公告)日：2018-03-22
申请号：US15526884
申请日：2014-11-26
发明人： Chengwu Duan , Ying Huang
摘要： The CVT includes a first pulley and a second pulley. Each of the first and second pulleys includes a first sheave, a second sheave, and a pulley axle operatively coupled between the first sheave and the second sheave. The first sheave can move relative to the second sheave along the pulley axle. Each of the first and second sheaves includes a sheave body and a plurality of sheave teeth protruding from the sheave body. The CVT further includes an endless rotatable device operatively coupled between the first and second pulleys. The endless rotatable device includes a plurality of pins interconnecting at least two of the links. The endless rotatable device further includes a plurality of device teeth each coupled to the pins.
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公开(公告)号：US20170314676A1
公开(公告)日：2017-11-02
申请号：US15532264
申请日：2014-11-26
发明人： Ying Huang , Chengwu Duan
CPC分类号： F16H61/66272 , F16G1/28 , F16G5/20 , F16H9/18 , F16H9/24 , F16H55/171 , F16H55/56 , F16H61/66236 , F16H61/66259 , F16H2059/465 , F16H2061/0087 , F16H2061/009
摘要： A vehicle includes a power plant, continuously variable transmission (CVT), drive wheels, sensors, and controller. The CVT achieves a fixed gear/positive engagement and friction drive modes, and includes an input member that receives input torque from the power plant, an output member, and a variator assembly having drive and driven variator pulleys. The pulleys are connected to each other via an endless rotatable drive element, and to a respective one of the input and output members. Pulley actuators change a CVT speed ratio. The controller calculates a relative slip of the pulleys using measured speeds and displacements from the sensors, reduces the relative slip until the relative slip is below a calibrated speed limit or within a calibrated speed range via actuator control signal to the pulley actuators, and commands the fixed gear/positive engagement mode via positive engagement control signals to the CVT until the relative slip reaches zero.
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公开(公告)号：US10428914B2
公开(公告)日：2019-10-01
申请号：US15526884
申请日：2014-11-26
发明人： Chengwu Duan , Ying Huang
摘要： The CVT includes a first pulley and a second pulley. Each of the first and second pulleys includes a first sheave, a second sheave, and a pulley axle operatively coupled between the first sheave and the second sheave. The first sheave can move relative to the second sheave along the pulley axle. Each of the first and second sheaves includes a sheave body and a plurality of sheave teeth protruding from the sheave body. The CVT further includes an endless rotatable device operatively coupled between the first and second pulleys. The endless rotatable device includes a plurality of pins interconnecting at least two of the links. The endless rotatable device further includes a plurality of device teeth each coupled to the pins.
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10.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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