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    • 20. 发明授权
    • Hydraulic control system for actuating a shifting element
    • 用于启动换档元件的液压控制系统
    • US09366338B2
    • 2016-06-14
    • US13531812
    • 2012-06-25
    • Markus HerrmannThilo Schmidt
    • Markus HerrmannThilo Schmidt
    • F16H61/26F16H61/02F16H61/06
    • F16H61/0206F16H61/061Y10T477/6936
    • A hydraulic system for actuating a transmission shifting element that comprises control and shifting valves. A first surface of a valve slide of the control valve is a differential surface between two functional surfaces of the slide that axially bound an area of the slide having a smaller diameter, by which the actuation pressure is adjusted. When the shifting valve is in a second switch position, a total force component acts upon the slide of the control valve which moves the slide such that the actuation pressure is equal to a system pressure. The total force component corresponds at least to the sum of a first force component equivalent to a pressure signal applied to a second surface of the slide of the control valve and a second force component equivalent to an actuation pressure applied to the first surface of the slide of the control valve.
    • 一种用于致动包括控制和换档阀的变速箱换档元件的液压系统。 控制阀的阀滑动件的第一表面是滑块的两个功能表面之间的差动表面,其轴向地限定具有较小直径的滑块的区域,由此调节致动压力。 当换档阀处于第二开关位置时,总力分量作用在控制阀的滑动件上,该滑动件使滑块移动,使得致动压力等于系统压力。 总力分量至少对应于等效于施加到控制阀的滑块的第二表面的压力信号的第一力分量和施加到滑块的第一表面的致动压力的第二力分量的和 的控制阀。