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    • 2. 发明授权
    • Controller for automatic transmission
    • 自动变速箱控制器
    • US08489296B2
    • 2013-07-16
    • US12520397
    • 2008-12-10
    • Naoto TanakaShinya ToyodaAkira HinoYasunari Matsui
    • Naoto TanakaShinya ToyodaAkira HinoYasunari Matsui
    • G06F19/00
    • F16H61/66272F16H61/12F16H2061/1208F16H2061/124F16H2061/1264Y10T477/62427Y10T477/6243
    • In a controller for a belt-type continuously variable transmission including a hydraulic actuator that changes a groove width of a primary pulley, a hydraulic actuator that changes a groove width of a secondary pulley, and a belt clamping pressure control solenoid that controls the hydraulic pressure supplied to the hydraulic actuator of the secondary pulley, a mechanism calculates a transmission ratio between the primary pulley and the secondary pulley and determines whether or not there is belt slippage based on that calculated transmission ratio, and a mechanism determines normalcy of the belt clamping pressure control solenoid. The input torque when belt slippage has actually occurred, i.e., when a failure has been determined, is used as a condition when performing the normalcy determination. By setting such a condition, it is possible for a normalcy determination threshold value (input torque value α) used for the normalcy determination to be a small value, and thus it is possible to suppress erroneous normalcy determination.
    • 在带式无级变速器的控制器中,包括改变初级带轮的槽宽度的液压致动器,改变次级带轮的槽宽度的液压致动器和控制液压的带夹紧压力控制螺线管 提供给次级带轮的液压致动器,机构计算主带轮和次级带轮之间的传动比,并且基于该计算的传动比来确定是否存在皮带打滑,并且机构确定皮带夹紧压力的正常 控制电磁铁。 当实际发生皮带打滑时的输入扭矩,即当确定故障时,输入扭矩被用作执行正常判定的条件。 通过设定这样的条件,用于正常判定的正常判定阈值(输入转矩值α)可以是小的值,因此可以抑制错误的正常判定。