Control device for hydraulic system of a continuously variable
transmission
    2.
    发明授权
    Control device for hydraulic system of a continuously variable transmission 失效
    无级变速器液压系统控制装置

    公开(公告)号:US06086513A

    公开(公告)日:2000-07-11

    申请号:US927271

    申请日:1997-09-11

    申请人: Masakazu Tominaga

    发明人: Masakazu Tominaga

    摘要: In a fluid pressure control system for a continuously variable transmission, a valve for regulating a torque converter pressure is a pilot actuated valve having a pressure increasing side pilot port for receiving a control pilot pressure for controlling a line pressure and a pressure decreasing side pilot port for receiving a second pilot pressure. A selector valve is switched between a first state for allowing the supply of the second pilot pressure to decrease the torque converter pressure supplied to the torque converter and a second state for draining the second pilot pressure to increase the torque converter pressure. By controlling the selector valve, a control unit increases the torque converter pressure in a wide throttle high speed vehicle operation with the torque converter in a lockup state to ensure the lockup engagement and in a wide throttle starting operation with the torque converter in a non-lockup state to prevent an engine stall. Otherwise, the control system decreases the torque converter pressure to improve the fuel economy.

    摘要翻译: 在用于无级变速器的流体压力控制系统中,用于调节变矩器压力的阀是具有增压侧先导端口的先导式致动阀,用于接收用于控制管路压力的控制先导压力和减压侧先导端口 用于接收第二先导压力。 选择阀在第一状态之间切换,以允许供给第二先导压力以减小供给到变矩器的变矩器压力,第二状态用于排出第二先导压力以增加变矩器压力。 通过控制选择阀,控制单元在变矩器处于锁定状态的情况下,在宽节气门高速车辆操作中增加变矩器压力,以确保锁止接合,并且在变矩器的非常宽的油门起动操作中, 锁定状态以防止发动机失速。 否则,控制系统降低变矩器压力,以提高燃油经济性。

    Baffle plate
    4.
    发明申请
    Baffle plate 审中-公开
    挡板

    公开(公告)号:US20060060424A1

    公开(公告)日:2006-03-23

    申请号:US11231143

    申请日:2005-09-20

    IPC分类号: F16N7/28

    CPC分类号: F16H57/0423

    摘要: There is provided a baffle plate which conforms to the shape of the inner peripheral surface of a transmission case and can be easily brought into contact with the inner peripheral surface of the transmission case, making it easier to design and manufacture the baffle plate. Rubber plates are arranged on a side of the baffle plate in proximity to the bottom wall of the transmission case. The baffle plate encloses both sides of the rotating surface of the driven sprocket. Therefore, even if the inner peripheral surface of the bottom wall of the transmission case has a complex shape, the side of the baffle plate in proximity to the case bottom wall can be closely attached to the inner peripheral surface of the transmission case. And, the baffle plate can be easily designed and manufactured. Also, oil agitating resistance during rotation of the driven sprocket can be reduced.

    摘要翻译: 设置有与变速箱的内周面的形状一致的挡板,能够容易地与变速箱的内周面接触,从而更容易地设计和制造挡板。 橡胶板布置在挡板的靠近变速箱底壁附近的一侧。 挡板包围从动链轮的旋转表面的两侧。 因此,即使变速箱的底壁的内周面具有复杂的形状,挡板的靠近壳底壁的一侧也可以紧密地安装在变速箱的内周面上。 并且,挡板可以容易地设计和制造。 此外,可以减少从动链轮旋转期间的油搅拌阻力。

    Flow rate control valve and continuously variable automatic transmission
provided with same
    5.
    发明授权
    Flow rate control valve and continuously variable automatic transmission provided with same 失效
    流量控制阀和连续可变自动变速器同样提供

    公开(公告)号:US5908367A

    公开(公告)日:1999-06-01

    申请号:US867759

    申请日:1997-06-03

    摘要: A fluid is guided inside a spool in which an orifice and drain holes are formed. The spool is displaced according to a hydraulic fluid pressure difference across the orifice. An outflow port, which is always connected with the orifice, and a drain passage, which overlaps with the drain holes according to a displacement position of the spool, are formed in the casing housing the spool. A stopper that limits the spool displacement beyond a position at which the overlap between the drain holes and drain passage is maximized is further provided. In this way, drainage of a fluid via the drain holes and drain passage is maintained at a maximum level even when fluid flows into the spool at a flow rate exceeding a predetermined level, and sharp increases of fluid flow rate from the orifice are thereby suppressed. By limiting excessive displacement of the spool, hysteresis is also prevented from occurring in the flow rate characteristics.

    摘要翻译: 流体被引导到其中形成有孔和排出孔的阀芯内。 阀芯根据孔之间的液压流体压差而移位。 总是与孔口连接的流出口和与卷轴的位移位置相对应的排水孔重叠的排水通道形成在容纳卷轴的壳体中。 进一步提供限制滑阀位移超过排水孔和排水通道之间的重叠最大化的位置的止动器。 以这种方式,即使当流体以超过预定水平的流量流入阀芯时,通过排水孔和排水通道将流体排出也保持在最大水平,从而抑制了从孔口流体流速的急剧增加 。 通过限制阀芯的过大位移,也可以防止在流量特性中发生滞后。