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    • 2. 发明授权
    • Control apparatus for continuously variable transmission
    • 无级变速器控制装置
    • US08554427B2
    • 2013-10-08
    • US13307287
    • 2011-11-30
    • Shinya YasunagaKeisuke AjimotoMasayuki NishidaHiroki TanakaTakahito Morishita
    • Shinya YasunagaKeisuke AjimotoMasayuki NishidaHiroki TanakaTakahito Morishita
    • F16H61/66
    • F16H61/66259F16H2061/6616
    • In a control apparatus for a continuously variable transmission, when the difference between a target transmission gear ratio calculated immediately after switching the control mode from a manual shift mode to an automatic shift mode and a current transmission gear ratio (that is, a fixed transmission gear ratio of the transmission gear stage selected in the manual shift mode immediately before the switching) is greater than or equal to a set value, a shift control unit sets a temporary target transmission gear ratio between the target transmission gear ratio and the current transmission gear ratio. If a temporary target transmission gear ratio is set, the shift control unit causes the transmission gear ratio obtained during transition of mode from the manual shift mode to the automatic shift mode to match the target transmission gear ratio stepwise via the temporary target transmission gear ratio.
    • 在用于无级变速器的控制装置中,当将控制模式从手动换档模式切换到自动换档模式后立即计算的目标变速比与当前变速比(即固定变速齿轮 在切换之前的手动变速模式中选择的变速级的比)大于或等于设定值,变速控制单元将目标变速比与当前变速比之间的临时目标变速比 。 如果设定临时目标变速比,则变速控制单元将从手动变速模式转换到自动变速模式的过渡期间所得到的变速比,经由临时目标变速传动比逐步匹配目标变速比。
    • 9. 发明授权
    • Control device for continuously variable transmission
    • 无级变速器控制装置
    • US08062156B2
    • 2011-11-22
    • US11727744
    • 2007-03-28
    • Masayuki Nishida
    • Masayuki Nishida
    • F16H61/00F16H59/00
    • F16H61/66259F16H61/12F16H61/66272
    • Safety as well as the minimum driving performance is secured by preventing abrupt down-shifting if a line pressure valve or a primary pressure control valve fails. A line pressure path connected to an oil pump is connected with a line pressure control valve. A first primary pressure path branched from the line pressure path is connected with a hydraulic fluid chamber through a fail-safe valve, and a secondary pressure path branched from the line pressure path is connected to a hydraulic fluid chamber. The line pressure control valve is connected with a second primary pressure path in communication with a hydraulic fluid chamber, and this secondary primary pressure path is provided with a primary pressure control valve and a limiter valve. When the line pressure control valve and the primary pressure control valve fail and excess line pressure or primary pressure is output, the pressure in the hydraulic fluid chamber is reduced by the fail-safe valve, so that the pressure in the hydraulic fluid chamber is reduced by the limiter valve.
    • 如果管路压力阀或主压力控制阀出现故障,则可以通过防止突然下降来确保安全以及最小的驱动性能。 连接到油泵的管路压力路径与管路压力控制阀连接。 从管路压力路径分支的第一主压力路径通过故障安全阀与液压流体室连接,并且从管路压力路径分支的二级压力路径连接到液压流体室。 线路压力控制阀与与液压流体室连通的第二主要压力路径连接,并且该次级主要压力路径设置有初级压力控制阀和限制阀。 当管路压力控制阀和一次压力控制阀故障并输出过剩的管路压力或一次压力时,通过故障安全阀减小液压室中的压力,使得液压流体室中的压力减小 通过限制阀。