Hydro-mechanical Transmission
    2.
    发明授权
    Hydro-mechanical Transmission 有权
    液压机械传动

    公开(公告)号:EP2860426B1

    公开(公告)日:2018-04-25

    申请号:EP14188528.5

    申请日:2014-10-10

    申请人: Vredo Beheer B.V.

    发明人: de Vree, Johannes

    IPC分类号: F16H47/04 F16H37/04

    摘要: The present invention is directed toward a transmission comprising: - a transmission case; - a first planetary gear mechanism arranged in the transmission case and comprising a sun gear, a planet gear set, and a ring gear; - a transmission input shaft connected to the first planetary gear mechanism and connectable to an external power source for driving the planetary gear mechanism; - at least one transmission output shaft connected to the first planetary gear mechanism and connectable to an external device for driving said external device; - at least one first hydrostat arranged externally on the transmission case and connected to the first planetary gear mechanism via a pump input shaft and configured to act as a unidirectional variable displacement pump driven by the planetary gear mechanism; - at least one second hydrostat arranged externally on the transmission case, driven by the first hydrostat, and configured to act as a unidirectional motor and connected to the planetary gear mechanism via a motor output shaft for driving the first planetary gear mechanism; wherein each of said transmission input shaft, said first hydrostat and said second hydrostat is connected to a respective one of said sun gear, said planet gear set, and said ring gear; wherein said transmission output shaft is connected to the one of said sun gear, said planet gear set, and said ring gear to which the second hydrostat is connected; wherein the first hydrostat and the second hydrostat are separate devices each having its own case arranged externally on the transmission case, and are connected via a hydraulic circuit that is configured for unidirectional flow of hydraulic oil between the first hydrostat and the second hydrostat.

    CONTROL MECHANISM FOR A CONTINUOUSLY VARIABLE TRANSMISSION
    4.
    发明公开
    CONTROL MECHANISM FOR A CONTINUOUSLY VARIABLE TRANSMISSION 审中-公开
    控制机构,无级变速器

    公开(公告)号:EP2935948A1

    公开(公告)日:2015-10-28

    申请号:EP13817689.6

    申请日:2013-12-23

    发明人: HEINDL, Richard

    摘要: A control mechanism for a continuously variable transmission, the transmission having a mechanical branch and a hydrostatic branch, the hydrostatic branch having a variable displacement hydraulic pump which drives first and second variable displacement hydraulic motors, the control mechanism controlling an operating angle of the hydraulic pump and motors, the mechanism comprising: an actuator, a pump adjustment means, operable by the actuator, to vary the operating angle of the pump, characterised in that the mechanism further comprises: first and second motor adjustment means, the adjustment means being operable by the actuator to vary the operating angle of the first and second motors, respectively.

    METHOD TO DETERMINE VEHICLE WEIGHT
    7.
    发明公开
    METHOD TO DETERMINE VEHICLE WEIGHT 有权
    系统用于确定车辆重量

    公开(公告)号:EP2766239A1

    公开(公告)日:2014-08-20

    申请号:EP12761593.8

    申请日:2012-09-13

    IPC分类号: B60W40/13 F16H47/04

    摘要: A system is provided for determining the current weight of a vehicle and any implement or trailer being towed or carried thereby. The system has an electronic control unit (13) and means to determine the current value of vehicle operating parameters indicative of the current wheel output torque and acceleration of the vehicle. These current parameter values are forwarded to the electronic control unit (13) so that the unit can calculate the current vehicle weight from a predetermined relationship involving wheel output torque, vehicle acceleration and other known current operating parameters of the vehicle. The other known current operating parameters of the vehicle are wheel rolling radius, angle of inclination of the vehicle, gravitational acceleration and rolling resistance of the wheels. The vehicle includes a hydrostatic mechanical CVT (T) which has a hydraulic drive circuit in which a hydraulic pump (200) supplies pressurised fluid to a hydraulic motor (210), the level of pressure in the drive circuit provides an indication of the current wheel output torque.