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公开(公告)号：US11306818B2
公开(公告)日：2022-04-19
申请号：US17177046
申请日：2021-02-16
IPC分类号： F16H61/66 , F16H61/664 , B60W10/108 , F16H15/28 , B60W30/18 , F16H15/52
摘要： A continuously variable transmission capable of operating in a forward direction or reverse direction may be controlled in the reverse direction by providing an initial skew angle in a first skew direction, followed by a set or sequence of skew angle adjustments in an opposite direction to prevent runaway or other unintended consequences. A continuously variable transmission may include a timing plate to maintain all planets at an angle or within a range of an angle in forward and reverse operations.
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公开(公告)号：US10260629B2
公开(公告)日：2019-04-16
申请号：US15869528
申请日：2018-01-12
IPC分类号： F16H15/28 , F16H15/50 , F16H61/664 , F16H63/06
摘要： Inventions are directed to components, subassemblies, systems, and/or methods for continuously variable transmissions (CVT). In one aspect, a control system is adapted to facilitate a change in the ratio of a CVT. A control system includes a control reference nut coupled to a feedback cam and operably coupled to a skew cam. In some cases, the skew cam is configured to interact with carrier plates of a CVT. Various inventive feedback cams and skew cams can be used to facilitate shifting the ratio of a CVT. In some transmissions described, the planet subassemblies include legs configured to cooperate with the carrier plates. In some cases, a neutralizer assembly is operably coupled to the carrier plates. A shift cam and a traction sun are adapted to cooperate with other components of the CVT to support operation and/or functionality of the CVT. Among other things, shift control interfaces for a CVT are described.
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公开(公告)号：US10208840B2
公开(公告)日：2019-02-19
申请号：US14839567
申请日：2015-08-28
发明人： Jon M. Nichols , Brad P. Pohl , Daniel J. Dawe , Oronde J. Armstrong , Charles B. Lohr , Loren T. McDaniel , Matthew P. Simister , Fernand A. Thomassy , Ghayyurul I. Usmani , Paul M. Elhardt , Terry L. Stewart , Peter D. Poxton , Elton L. Eidson
摘要： Continuously variable transmissions (CVTs) having a plurality of balls, each ball having a bore through which a ball axle passes, are provided. In some aspects, the CVTs include first and second rings on either side and in contact with the plurality of balls, and an idler assembly including an idler having a non-uniform outer diameter. The profile of the idler ensures lubricant flows to a largest diameter of the non-uniform outer diameter, and lubricant sprays off the largest diameter to lubricate one or more components of the CVT. A lubrication system may include a scraper configured to remove lubricant that accumulates in an interior of the CVT.
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公开(公告)号：US20180148055A1
公开(公告)日：2018-05-31
申请号：US15881145
申请日：2018-01-26
发明人： Jeremy Carter , Brad P. Pohl , Loren T. McDaniel , Cyril Keilers , Tim Ruggles , David Lynn Rogers , Eric Diehl , Austin Orand , Alan Mark Delz , Paul Argus Parks , Mark Edward Bartholomew , Christopher M. Vasiliotis
IPC分类号： B60W30/188 , B60L11/00
摘要： Disclosed here are inventive systems and methods for a powertrain of an electric vehicle (EV) having a continuously variable transmission (CVT) coupled to an electric drive motor, wherein a control system is configured to control the CVT and/or the drive motor to optimize various efficiencies associated with the EV and/or its subsystems. A control system is configured to operate the EV in an economy mode. Operating in said mode, the control system simultaneously manages the CVT and the drive motor to optimize the range of the EV. The control system can be configured to manage the current provided to the drive motor, as well as adjust a transmission speed ratio of the CVT. Other modes of operation are also possible. The control system can be configured to manage the power to the drive motor and adjust the transmission speed ratio of the CVT taking into account battery voltage, throttle position, and transmission speed ratio, for example.
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公开(公告)号：US20180135750A1
公开(公告)日：2018-05-17
申请号：US15869528
申请日：2018-01-12
IPC分类号： F16H61/664 , F16H63/06 , F16H15/50 , F16H15/28
CPC分类号： F16H61/664 , F16H15/28 , F16H15/50 , F16H61/6648 , F16H63/067
摘要： Inventions are directed to components, subassemblies, systems, and/or methods for continuously variable transmissions (CVT). In one aspect, a control system is adapted to facilitate a change in the ratio of a CVT. A control system includes a control reference nut coupled to a feedback cam and operably coupled to a skew cam. In some cases, the skew cam is configured to interact with carrier plates of a CVT. Various inventive feedback cams and skew cams can be used to facilitate shifting the ratio of a CVT. In some transmissions described, the planet subassemblies include legs configured to cooperate with the carrier plates. In some cases, a neutralizer assembly is operably coupled to the carrier plates. A shift cam and a traction sun are adapted to cooperate with other components of the CVT to support operation and/or functionality of the CVT. Among other things, shift control interfaces for a CVT are described.
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公开(公告)号：US09920823B2
公开(公告)日：2018-03-20
申请号：US15062461
申请日：2016-03-07
发明人： Jon M. Nichols , Gregory G. Stevenson , Brad P. Pohl , Fernand A. Thomassy , Charles B. Lohr , Jeremy Carter , John W. Sherrill , Brian B. Sweet
CPC分类号： F16H37/022 , B62M11/16 , F16H15/28 , F16H15/503 , F16H15/52 , F16H61/6649 , F16H63/067
摘要： Inventive embodiments are directed to components, subassemblies, systems, and/or methods for continuously variable transmissions (CVT). In one embodiment, a control system is adapted to facilitate a change in the ratio of a CVT. In another embodiment, a control system includes a stator plate configured to have a plurality of radially offset slots. Various inventive traction planet assemblies and stator plates can be used to facilitate shifting the ratio of a CVT. In some embodiments, the traction planet assemblies include planet axles configured to cooperate with the stator plate. In one embodiment, the stator plate is configured to rotate and apply a skew condition to each of the planet axles. In some embodiments, a stator driver is operably coupled to the stator plate. Embodiments of a traction sun are adapted to cooperate with other components of the CVT to support operation and/or functionality of the CVT. Among other things, shift control interfaces for a CVT are disclosed.
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公开(公告)号：US09709138B2
公开(公告)日：2017-07-18
申请号：US15155508
申请日：2016-05-16
CPC分类号： F16H15/52 , B62M1/36 , B62M9/08 , B62M11/145 , F16H15/28 , F16H15/503 , Y10T74/19851 , Y10T74/20177
摘要： Traction planets and traction rings can be operationally coupled to a planetary gearset to provide a continuously variable transmission (CVT). The CVT can be used in a bicycle. In one embodiment, the CVT is mounted on the frame of the bicycle at a location forward of the rear wheel hub of the bicycle. In one embodiment, the CVT is mounted on and supported by members of the bicycle frame such that the CVT is coaxial with the crankshaft of the bicycle. The crankshaft is configured to drive elements of the planetary gearset, which are configured to operationally drive the traction rings and the traction planets. Inventive component and subassemblies for such a CVT are disclosed. A shifting mechanism includes a plurality of pivot arms arranged to pivot about the centers of the traction planets as a shift pin hub moves axially.
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公开(公告)号：US09676391B2
公开(公告)日：2017-06-13
申请号：US15142486
申请日：2016-04-29
发明人： Jeremy Carter , Brad P. Pohl , Loren T. McDaniel , Cyril Keilers , Tim Ruggles , David Lynn Rogers , Eric Diehl , Austin Orand , Alan Mark Delz , Paul Argus Parks , Mark Edward Bartholomew , Christopher M. Vasiliotis
IPC分类号： B60W30/18 , B60W30/188 , B60L11/18 , B60W10/08 , B60W10/109 , B62M6/45 , B62M6/65 , B60L11/00 , F16H9/04 , B60L15/20 , B60W10/108 , F16H15/52 , F16H15/40 , F16H61/664
CPC分类号： B60W30/188 , B60L11/007 , B60L11/1805 , B60L15/20 , B60L2200/12 , B60L2240/441 , B60L2240/642 , B60L2250/16 , B60W10/08 , B60W10/108 , B60W10/109 , B60W2510/0638 , B60W2510/1005 , B60W2510/244 , B60W2520/10 , B60W2540/10 , B60W2550/142 , B60W2710/081 , B60W2710/1005 , B60Y2200/12 , B62M6/45 , B62M6/65 , F16H9/04 , F16H15/40 , F16H15/52 , F16H61/6648 , F16H61/6649 , Y02T10/7005 , Y02T10/7258 , Y02T10/7291 , Y02T90/16 , Y10T29/49002 , Y10T477/6237
摘要： Disclosed here are inventive systems and methods for a powertrain of an electric vehicle (EV). In some embodiments, said powertrain includes a continuously variable transmission (CVT) coupled to an electric drive motor, wherein a control system is configured to control the CVT and/or the drive motor to optimize various efficiencies associated with the EV and/or its subsystems. In one specific embodiment, the control system is configured to operate the EV in an economy mode. Operating in said mode, the control system simultaneously manages the CVT and the drive motor to optimize the range of the EV. The control system can be configured to manage the current provided to the drive motor, as well as adjust a transmission speed ratio of the CVT. Other modes of operation are also disclosed. The control system can be configured to manage the power to the drive motor and adjust the transmission speed ratio of the CVT taking into account battery voltage, throttle position, and transmission speed ratio, for example.
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公开(公告)号：US20170159812A1
公开(公告)日：2017-06-08
申请号：US15435859
申请日：2017-02-17
IPC分类号： F16H61/664 , F02B67/04 , F16H59/40 , F16H15/50 , F16H63/06
CPC分类号： F16H61/6646 , F02B67/04 , F16H15/40 , F16H15/42 , F16H15/50 , F16H15/503 , F16H15/52 , F16H59/40 , F16H61/0021 , F16H61/0204 , F16H61/664 , F16H63/065 , F16H63/067 , F16H63/42 , F16H2059/704 , F16H2061/6641 , Y02T10/76 , Y10T29/49826 , Y10T477/619
摘要： Inventive embodiments are directed to components, subassemblies, systems, and/or methods for continuously variable accessory drives (CVAD). In one embodiment, a skew-based control system is adapted to facilitate a change in the ratio of a CVAD. In another embodiment, a skew-based control system includes a skew actuator coupled to a carrier member. In some embodiments, the skew actuator is configured to rotate a carrier member of a CVT. Various inventive traction planet assemblies can be used to facilitate shifting the ratio of a CVT. In some embodiments, the traction planet assemblies include legs configured to cooperate with the carrier members. In some embodiments, a traction planet assembly is operably coupled to the carrier members. Embodiments of a shift cam and traction sun are adapted to cooperate with other components of the CVT to support operation and/or functionality of the CVT. Among other things, shift control interfaces for a CVT are disclosed.
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公开(公告)号：US20160298740A1
公开(公告)日：2016-10-13
申请号：US15186898
申请日：2016-06-20
发明人： Jeremy Carter , Charles B. Lohr , Brad P. Pohl , David Kieke
CPC分类号： F16H37/084 , F16H15/28 , F16H15/503 , F16H2037/0886
摘要： Components, subassemblies, systems, and/or methods for continuously variable transmissions (CVT) having a variator provided with a plurality of tilting, traction planets and traction rings are described. In one embodiment, a variator is coupled to a rangebox to provide multiple operating modes. In another embodiment, a hydraulic system is configured to control the transmission ratio of the variator and the rangebox. Shift-cam-and-sun subassemblies can be used to facilitate shifting of the transmission ratio of a CVT. A transmission housing and bell housing can be adapted to house components of a CVT and, in some embodiments, to cooperate with other components of the CVT to support operation and/or functionality of the CVT. Related devices include, for example, a pivot arm, a control feedback mechanism, axial force generation and management mechanisms, a control valve integral with an input shaft, a pivot pin hub, and a rotatable carrier configured to support planet-pivot arm assemblies.
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