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    • 6. 发明授权
    • Control system for an infinitely variable transmission
    • 无级变速器控制系统
    • US4657522A
    • 1987-04-14
    • US645937
    • 1984-08-30
    • Motohisa Miyawaki
    • Motohisa Miyawaki
    • F16H9/00F16H61/00F16H61/66F16H61/662F16H63/06B60K41/14F16H11/06F16H55/56
    • B60W30/18B60W10/04B60W10/101B60W30/1819F16H61/66F16H61/66259Y10T477/62429
    • A control system for an infinitely variable belt-drive transmission comprises a primary pulley having a hydraulically shiftable disc, a secondary pulley having a hydraulically shiftable disc, a belt engaged with both pulleys, and a hydraulic circuit having a pump for supplying oil. A transmission ratio control valve is provided to be responsive to engine speed for controlling the oil and for shifting the disc of the primary pulley to change the transmission ratio, and a pressure regulator valve is provided to respond to the transmission ratio for increasing the pressure of the oil with an increase of the transmission ratio. A pickup is provided to produce pulses dependent on engine speed, and a electric circuit is responsive to the pulses for producing pulses. An electromagnetic valve is provided to respond to the pulses for draining the oil applied to the transmission ratio control valve thereby controlling the valve so as to provide at least two transmission ratio characteristics.
    • 用于无级变速皮带传动变速器的控制系统包括具有液压可移动盘的初级带轮,具有液压可移动盘的次级带轮,与两个带轮接合的带以及具有用于供应油的泵的液压回路。 提供传动比控制阀,以响应于用于控制油和用于使主滑轮的盘移动以改变传动比的发动机转速,并且提供压力调节阀以响应于增加压力的传动比 该油随着传动比的增加而增加。 提供拾取器以产生取决于发动机速度的脉冲,并且电路响应于用于产生脉冲的脉冲。 提供电磁阀以响应用于排放施加到变速比控制阀上的油的脉冲,从而控制阀,从而提供至少两个变速比特性。