Electric traction drives
    2.
    发明授权

    公开(公告)号:US10056811B2

    公开(公告)日:2018-08-21

    申请号:US15436471

    申请日:2017-02-17

    发明人: Brad P. Pohl

    摘要: Inventive embodiments are directed to components, subassemblies, systems, and/or methods for electric traction drives employing a continuously variable transmission (CVT) having a variator provided with a plurality of tilting traction planets and opposing traction rings. In one embodiment, an electric traction drive is provided with an electromotive device configured to transfer power to or from a traction sun of a CVT. In other embodiments, an electric traction drive is provided with an electromotive device that couples to certain components of a CVT such as a traction ring, a carrier assembly, and a main axle. Various inventive shifting assemblies having shift cams and shift cam cages can be used to facilitate adjusting the transmission speed ratio of a CVT. Various related devices include embodiments of, for example, a power input apparatus, a speed ratio shifter, a shift cam actuator, a shift nut, and a carrier assembly configured to support the tilting traction planets.

    TRANSMISSION
    5.
    发明申请
    TRANSMISSION 审中-公开

    公开(公告)号:US20180142774A1

    公开(公告)日:2018-05-24

    申请号:US15575176

    申请日:2016-03-23

    申请人: Yammar Co., Ltd.

    发明人: Terunobu YOSHIOKA

    IPC分类号: F16H57/033 F16H57/021

    摘要: It is an object of the present invention to provide a transmission convertible to various specifications while ensuring compatibility of housing. It is further an object of the present invention to provide a transmission that can restrain vibration of a hydraulic unit, and that can downsize the housing. As a solution to the problem, a transmission (3) includes: a hydraulic unit which operates with a working fluid; an input shaft (312, 372) configured to transmit rotary power to the hydraulic unit; an output shaft (313, 373) configured to transmit rotary power from the hydraulic unit; and a housing (7) configured to accommodate the hydraulic unit, the input shaft (312, 372), and the output shaft (313, 373), wherein the transmission is capable of selecting a continuously variable transmission (311) or a connection/disconnection device (371) as the hydraulic unit.

    TRANSMISSION DEVICE AND METHOD FOR OPERATING THE SAME

    公开(公告)号:US20170211694A1

    公开(公告)日:2017-07-27

    申请号:US15413523

    申请日:2017-01-24

    IPC分类号: F16H61/40 F16H47/02

    摘要: A power-split transmission device for a vehicle, which connects a drive engine to a drive output, having a hydrostatic unit for continuous adjustment of the transmission ratio at a transmission unit, and two range clutches that alternately operate for respectively associated driving ranges with different transmission ratios. A control unit, during regular vehicle deceleration, implements the driving range change from a first range, with higher transmission ratios, to a second range, with lower transmission ratios, by switching from the first to the second range clutch in accordance with a synchronous point dependent deceleration control logic. In the special case of an unexpected increase of the deceleration dynamic at the beginning of an already initiated driving range change from the first to the second driving range, the control unit immediately forces the change by bypassing the synchronous point dependent deceleration control logic when other boundary conditions are fulfilled.