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1.发明公开公开(公告)号：US20240175481A1
公开(公告)日：2024-05-30
申请号：US18434607
申请日：2024-02-06
发明人： Marko Matenda , Brad Pohl
IPC分类号： F16H15/50 , F16H59/04 , F16H59/06 , F16H61/02 , F16H61/664
CPC分类号： F16H15/50 , F16H59/044 , F16H59/06 , F16H61/0213 , F16H2061/6641 , F16H2342/02
摘要： A continuous variable planetary (CVP) system includes a CVP hub, which includes a shift mechanism including a shift driver element, and a processing server system to calibrate the CVP system and detect errors within the CVP system. The processing server system performs continuously monitoring or obtaining a transmission speed ratio of the CVP hub. Upon detecting that the transmission speed ratio reaches a particular value, the processing server system records a corresponding position of the shift driver. The processing server system calibrates the CVP system based on the particular value, the corresponding position, and a known relationship between transmission speed ratios and positions of the shift mechanism. The processing server system determines or verifies a full underdrive (FUD) position by iteratively reducing a transmission speed ratio from the particular value until an onset of a backlash condition is detected and determines or verifies a full overdrive (FOD) position.
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公开(公告)号：US11624432B2
公开(公告)日：2023-04-11
申请号：US17537871
申请日：2021-11-30
发明人： Brian Schoolcraft
IPC分类号： F16H37/02 , F16H37/06 , B60K17/08 , B60W30/182 , B60W10/04 , B60W10/101 , F16H3/44 , F16H37/08 , F16H61/04
摘要： Systems and methods for controlling transmissions having CVTs are disclosed with multiple modes and gearing arrangements for range enhancements, where embodiments include synchronous shifting to allow the transmission to achieve a continuous range of transmission ratios, while minimizing “empty” cycling of the CVT during mode shifts. Embodiments provide for wide ratio range and performance and efficiency flexibility, while maximizing CVT usage through synchronous shifting.
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3.发明授权公开(公告)号：US11530739B2
公开(公告)日：2022-12-20
申请号：US17527775
申请日：2021-11-16
发明人： Jon M. Nichols
IPC分类号： F16H15/52
摘要： A ball-planetary continuously variable transmission (CVT) capable of stable control in forward and reverse rotation over a range of speed ratios including underdrive and overdrive is provided. Imparting a skew angle (zeta) causes unbalanced forces that change the tilt angle (gamma), resulting in a change in speed ratio of the CVT. Angularly orientating a control system of the CVT with a positive offset angle (psi) configures the CVT for operation in a first direction of rotation or angularly orientating the control system with a negative offset angle (psi) configures the CVT for operation in a reverse direction of rotation. A control system for configuring the offset angle (psi) may lead or trail the planets. The control system may configure a larger offset angle for more stable control or may configure a smaller offset angle for higher sensitivity in potential rollback scenarios.
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公开(公告)号：US11454303B2
公开(公告)日：2022-09-27
申请号：US16276505
申请日：2019-02-14
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： Inventive embodiments are directed to components, subassemblies, systems, and/or methods for continuously variable transmissions (CVT). In one embodiment, a main axle is adapted to receive a shift rod that cooperates with a shift rod nut to actuate a ratio change in a CVT. In another embodiment, an axial force generating mechanism can include a torsion spring, a traction ring adapted to receive the torsion spring, and a roller cage retainer configured to cooperate with the traction ring to house the torsion spring. Various inventive idler-and-shift-cam assemblies can be used to facilitate shifting the ratio of a CVT. Embodiments of a hub shell and a hub cover are 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. Among other things, shift control interfaces and braking features for a CVT are disclosed.
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5.发明申请公开(公告)号：US20220266946A1
公开(公告)日：2022-08-25
申请号：US17677551
申请日：2022-02-22
发明人： David Hancock , C.A. van den Ende , Kevin Kreidler
IPC分类号： B62M6/50 , B62J45/20 , B62J45/412
摘要： Electric bikes (“e-bikes”) configured to achieve automatic and dynamic ride control based on a rider's desired ride objective without requiring direct physical inputs from the rider during the ride are disclosed. A rider specifies, via her mobile device or a device integrated with the e-bike, various input parameters representative of a desired ride objective. An objective-based ride control algorithm is then executed to determine—based on sensor information indicative of input variables such as pedal cadence, vehicle speed, current transmission position, electric motor power, GPS location, terrain elevation, and the like—settings for controlled variables such as transmission ratio, motor assist level, braking force, and/or suspension pressure in order to support the rider's desired ride objective, as represented by the specified input parameters. As such, a rider achieves a desired ride experience without having to directly manipulate controlled variables during the ride.
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公开(公告)号：US11215268B2
公开(公告)日：2022-01-04
申请号：US16674785
申请日：2019-11-05
发明人： Brian Schoolcraft
IPC分类号： F16H37/02 , F16H37/06 , B60K17/08 , B60W30/182 , B60W10/04 , B60W10/101 , F16H3/44
摘要： Systems and methods for controlling transmissions having CVTs are disclosed with multiple modes and gearing arrangements for range enhancements, where embodiments include synchronous shifting to allow the transmission to achieve a continuous range of transmission ratios, while minimizing “empty” cycling of the CVT during mode shifts. Embodiments provide for wide ratio range and performance and efficiency flexibility, while maximizing CVT usage through synchronous shifting.
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7.发明授权公开(公告)号：US11174922B2
公开(公告)日：2021-11-16
申请号：US16799025
申请日：2020-02-24
发明人： Jon M. Nichols
IPC分类号： F16H15/52
摘要： A ball-planetary continuously variable transmission (CVT) capable of stable control in forward and reverse rotation over a range of speed ratios including underdrive and overdrive is provided. Imparting a skew angle (zeta) causes unbalanced forces that change the tilt angle (gamma), resulting in a change in speed ratio of the CVT. Angularly orientating a control system of the CVT with a positive offset angle (psi) configures the CVT for operation in a first direction of rotation or angularly orientating the control system with a negative offset angle (psi) configures the CVT for operation in a reverse direction of rotation. A control system for configuring the offset angle (psi) may lead or trail the planets. The control system may configure a larger offset angle for more stable control or may configure a smaller offset angle for higher sensitivity in potential rollback scenarios.
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公开(公告)号：US11125329B2
公开(公告)日：2021-09-21
申请号：US16160624
申请日：2018-10-15
摘要： An electronic controller for a variable ratio transmission and an electronically controllable variable ratio transmission including a variator or other CVT are described herein. The electronic controller can be configured to receive input signals indicative of parameters associated with an engine coupled to the transmission. The electronic controller can also receive one or more control inputs. The electronic controller can determine an active range and an active variator mode based on the input signals and control inputs. The electronic controller can control a final drive ratio of the variable ratio transmission by controlling one or more electronic solenoids that control the ratios of one or more portions of the variable ratio transmission.
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公开(公告)号：US10704687B2
公开(公告)日：2020-07-07
申请号：US15680506
申请日：2017-08-18
摘要： Systems and methods for controlling transmissions and associated vehicles, machines, equipment, etc., are disclosed. In one case, a transmission control system includes a control unit configured to use a sensed vehicle speed and a commanded, target constant input speed to maintain an input speed substantially constant. The system includes one or more maps that associate a speed ratio of a transmission with a vehicle speed. In one embodiment, one such map associates an encoder position with a vehicle speed. Regarding a specific application, an automatic bicycle transmission shifting system is contemplated. An exemplary automatic bicycle includes a control unit, a shift actuator, various sensors, and a user interface. The control unit is configured to cooperate with a logic module and an actuator controller to control the cadence of a rider. In one embodiment, a memory of, or in communication with, the control unit includes one or more constant cadence maps that associate transmission speed ratios with bicycle speeds.
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公开(公告)号：US10703372B2
公开(公告)日：2020-07-07
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： B60W30/18 , B60W30/188 , B60W10/08 , B60W10/109 , B62M6/45 , B62M6/65 , B60L50/52 , B60L50/20 , F16H9/04 , B60L15/20 , B60W10/108 , F16H15/52 , F16H61/664 , F16H15/40
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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