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    • 5. 发明授权
    • Continuously variable transmission system with engine braking
    • 具有发动机制动的连续可变传动系统
    • US6149540A
    • 2000-11-21
    • US936191
    • 1997-09-17
    • Mitchell D. JohnsonGregory G. LislegardMichael R. TriheySteven D. CorneliusenJoel H. AndersonSteven L. JohnsonBarry WaltonDavid C. OchabBrent Barron
    • Mitchell D. JohnsonGregory G. LislegardMichael R. TriheySteven D. CorneliusenJoel H. AndersonSteven L. JohnsonBarry WaltonDavid C. OchabBrent Barron
    • B62M9/06F16H9/18F16H61/662F16H59/00F16H9/00F16H55/56
    • F16H9/18F16H61/66227
    • A continuously variable transmission (CVT) system for use on snowmobiles, ATV's and similar vehicles. The CVT includes a rotatable drive clutch connected to an input shaft (the input shaft being connectable to an engine), and a roller clutch carried on the input shaft. The CVT also includes a rotatable driven clutch connected to an output shaft, the driven clutch having a laterally stationary sheave and a laterally movable sheave that is normally biased toward the stationary sheave. An endless flexible drive belt is disposed about the drive and driven clutches. The clutches and drive belt are configured so that when the engine is idling the belt firmly engages a drive surface of the roller clutch that is connected to the drive clutch. The roller clutch permits the drive surface (and, therefore, the belt) to remain stationary when the input shaft is rotating, thereby preventing vehicle "creep" when idling, and, yet, the roller clutch also firmly engages the drive clutch's drive surface with the input shaft when the driven clutch attempts to drive the belt faster than the speed at which the drive clutch and input shaft are rotating, thereby permitting the driven clutch to backdrive the input shaft and engine to provide engine braking to the vehicle.
    • 一种用于雪地摩托车,亚视和类似车辆的无级变速器(CVT)系统。 CVT包括连接到输入轴(输入轴可连接到发动机)的可旋转驱动离合器和承载在输入轴上的滚子离合器。 CVT还包括连接到输出轴的可旋转从动离合器,从动离合器具有横向固定滑轮和通常朝向固定滑轮偏置的可横向移动的滑轮。 无级的柔性传动带围绕传动和驱动的离合器设置。 离合器和传动带构造成使得当发动机空转时,带牢固地接合连接到驱动离合器的滚柱离合器的驱动表面。 当输入轴旋转时,滚柱离合器允许驱动表面(以及因此的带)保持静止,从而防止车辆在空转时“爬行”,然而,滚子离合器也与驱动离合器的驱动表面牢固地接合, 当从动离合器试图驱动皮带比驱动离合器和输入轴旋转的速度更快时,输入轴,从而允许从动离合器反向驱动输入轴和发动机以向车辆提供发动机制动。