Forward-reverse changeover mechanism for an automatic transmission
    13.
    发明申请
    Forward-reverse changeover mechanism for an automatic transmission 审中-公开
    自动变速器的前后倒档切换机构

    公开(公告)号:US20050217964A1

    公开(公告)日:2005-10-06

    申请号:US11085003

    申请日:2005-03-21

    摘要: A forward-reverse changeover mechanism for an automatic transmission is disclosed. The automatic transmission has an input shaft (1) to which a torque is inputted and an output shaft from which a torque is outputted. The forward-reverse changeover mechanism is installed between the input shaft and the output shaft and controls a rotational direction of the output shaft with respect to a rotational direction of the input shaft. The forward-reverse changeover mechanism includes a clutch (5/6) that is engaged when rotation identical or reverse in direction to rotation of the input shaft (1) is transmitted to the output shaft; a piston (9/13) that controls engagement/disengagement of the clutch; and a ring-shaped spring (20) that is interposed between the clutch (5/6) and the piston (9/13) and receives a load from the piston (9/13), wherein the load causes a deformation of the ring-shaped spring (20). A spring constant (k) of the ring-shaped spring (20) switches according to an amount of the deformation of the ring-shaped spring (20).

    摘要翻译: 公开了一种用于自动变速器的前后倒转切换机构。 自动变速器具有输入转矩的输入轴(1)和输出转矩的输出轴。 前进反向切换机构安装在输入轴和输出轴之间,并且相对于输入轴的旋转方向控制输出轴的旋转方向。 前后倒转切换机构包括:离合器(5/6),其在与输入轴(1)的旋转方向相同或相反的旋转传递到输出轴时接合; 控制离合器的接合/分离的活塞(9/13); 以及插入在离合器(5/6)和活塞(9/13)之间并且接收来自活塞(9/13)的负载的环形弹簧(20),其中负载引起环的变形 形弹簧(20)。 环形弹簧(20)的弹簧常数(k)根据环形弹簧(20)的变形量而切换。

    System for preventing belt slip of belt-type continuously variable transmission
    14.
    发明授权
    System for preventing belt slip of belt-type continuously variable transmission 有权
    带式无级变速器皮带打滑系统

    公开(公告)号:US07029410B2

    公开(公告)日:2006-04-18

    申请号:US10647667

    申请日:2003-08-25

    IPC分类号: F16H61/12 F16H61/18

    摘要: CVT control unit of a belt CVT checks whether a reverse rotation of pulleys is generated. When the reverse rotation is generated, a PLpri torque capacity is calculated from a primary pressure Ppri, and this PLpri torque capacity is used as a torque limit value of a torque-down control of an engine control unit. An input torque to a transmission mechanism is compared with the PLpri torque capacity, and when the input torque exceeds the PLpri torque capacity, shortage of the PLpri torque capacity for the input torque is calculated. Then, this shortage is added to the input torque as a correction amount, and a line pressure is set on the basis of a result of this addition.

    摘要翻译: 皮带CVT的CVT控制单元检查是否产生滑轮的反向旋转。 当产生反向旋转时,从初级压力Ppri计算PLpri转矩容量,并将该PLpri转矩容量用作发动机控制单元的转矩下降控制的转矩极限值。 将变速机构的输入转矩与PLpri转矩容量进行比较,当输入转矩超过PLpri转矩能力时,计算输入转矩的PLpri转矩容量不足。 然后,作为校正量,将该短路与输入转矩相加,基于该相加的结果设定管路压力。