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    Slippage prevention apparatus of belt-drive continuously variable transmission for automotive vehicle
    2.
    发明授权
    Slippage prevention apparatus of belt-drive continuously variable transmission for automotive vehicle 有权
    汽车皮带传动无级变速器防滑装置

    公开(公告)号：US07229372B2

    公开(公告)日：2007-06-12

    申请号：US10670775

    申请日：2003-09-26

    申请人： Shigeki Shimanaka ,  Hiroyasu Tanaka ,  Youhei Ishikawa ,  Tatsuo Wakahara ,  Yoshihisa Kodama ,  Hideki Oshita

    发明人： Shigeki Shimanaka ,  Hiroyasu Tanaka ,  Youhei Ishikawa ,  Tatsuo Wakahara ,  Yoshihisa Kodama ,  Hideki Oshita

    IPC分类号： F16H61/12 ,  F16H61/18 ,  B60K41/12

    CPC分类号： F16H61/66272 ,  F16H59/42 ,  F16H2059/683 ,  F16H2061/66277 ,  Y10T477/624

    摘要： During a downshift of a belt-drive continuously variable transmission, occurring owing to vehicle deceleration, a CVT controller foretells that a slippage between a drive belt and each of primary and secondary variable-width pulleys tends to occur, when a primary pulley pressure is less than a first predetermined pressure level and a primary pulley speed is less than a first predetermined rotational speed. When the belt slippage has been foretold, the CVT controller inhibits the primary pulley pressure from dropping by setting an actual transmission ratio calculated before a set time period from a time when the slippage has been foretold or a transmission ratio of a relatively higher speed side as compared with a ratio-change operating state obtained when the slippage has been foretold, to a desired transmission ratio, or by relatively rising a line pressure as compared with a line pressure level produced when the slippage has been foretold.

    摘要翻译： 在由于车辆减速而发生的带驱动无级变速器的降档期间，CVT控制器预示着当主带轮压力较小时，驱动带与主变速和次级带轮之间的滑动趋于发生 比第一预定压力水平和初级皮带轮速度小于第一预定转速。 当预先设置皮带滑移时，CVT控制器通过设定从预先设定的滑行时间起的设定时间段之前所计算出的实际传动比或相对较高的速度侧的传动比，来使主滑轮压力下降 与通过预期滑动所获得的比变化操作状态相比，与预期的滑动所产生的线路压力水平相比，与期望的传动比相比，或者相对地增加管路压力。

    Engine torque control system
    4.
    发明授权
    Engine torque control system 有权
    发动机转矩控制系统

    公开(公告)号：US07229373B2

    公开(公告)日：2007-06-12

    申请号：US10787012

    申请日：2004-02-25

    申请人： Masahiro Yamamoto ,  Yoshihisa Kodama ,  Shigeki Shimanaka ,  Hiroyasu Tanaka

    发明人： Masahiro Yamamoto ,  Yoshihisa Kodama ,  Shigeki Shimanaka ,  Hiroyasu Tanaka

    IPC分类号： F16H61/02 ,  F16H61/12

    CPC分类号： F16H61/66272 ,  F16H61/12 ,  F16H2061/124

    摘要： In case information such as an actual gear ratio is not stored in an EEPROM 28 due to a trouble of a backup power source 29 or like when an initialization operation of a step motor 27 is performed at the time of start of a vehicle or during stoppage of the vehicle, an output torque of an engine is limited before the initialization operation. Thereby, even if an accelerator is depressed during the initialization operation of the step motor 27 in which a sufficient primary pulley pressure cannot be ensured, the output torque of the engine is limited, so that torque inputted to a V-belt type continuously variable transmission is small and slippage does not occurs between the primary pulley and a secondary pulley.

    摘要翻译： 在车辆启动时或停止时进行步进电动机27的初始化动作时，由于备用电源29等的故障而无法将实际变速比等信息存储在EEPROM28中 在初始化操作之前限制发动机的输出转矩。 因此，即使在步进电动机27的初始化动作中，即使不能确保足够的初级带轮压力，也能够抑制加速器，则发动机的输出转矩受到限制，输入到V型无级变速器 在主滑轮和次滑轮之间不会发生滑动。

    Shift control system in belt-type continuously variable transmission
    6.
    发明授权
    Shift control system in belt-type continuously variable transmission 有权
    带式无级变速器变速控制系统

    公开(公告)号：US07651422B2

    公开(公告)日：2010-01-26

    申请号：US10788720

    申请日：2004-02-27

    申请人： Masahiro Yamamoto ,  Midori Yamaguchi ,  Shigeki Shimanaka ,  Hiroyasu Tanaka ,  Hironobu Waki

    发明人： Masahiro Yamamoto ,  Midori Yamaguchi ,  Shigeki Shimanaka ,  Hiroyasu Tanaka ,  Hironobu Waki

    IPC分类号： F16H61/00

    CPC分类号： F16H61/66259 ,  F16H61/66272 ,  F16H2061/6605

    摘要： When a speed of a vehicle is less than 8 km/h, an upshift determination condition is established, an idle switch signal is turned off, and a downshift is detected, an operating speed of the step motor is limited. Thereby, since the operating speed of the step motor is limited even when the vehicle is rapidly decelerated and re-accelerated before a pulley ratio is returned to a lowest value Lo, a shift speed of the downshift performed in the re-acceleration is lowered, and no slippage occurs in a V-belt between pulleys.

    摘要翻译： 当车辆速度小于8km / h时，建立升档判定条件，关闭怠速开关信号，检测到降档，则步进电动机的运转速度受到限制。 因此，由于即使在滑轮比返回到最低值Lo之前车辆快速减速再加速的情况下，由于步进马达的运转速度受到限制，所以在再加速度中进行的降档的换档速度降低， 在皮带轮之间的V形皮带中不会发生滑动。