Modulating Valve (Electronic Clutch Pressure Control)
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| 图 1 | g02626919 |
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(1) 电磁阀
(2) 钢球 (3) 节流孔 (4) 腔室 (5) 加注口 (6) 控制滑阀 (7) 弹簧 (8) 供油口 (9) 排放口 | |
使用由电磁阀控制的调制阀可实现行星变速箱中单独离合器的控制。
变速箱泵供应的加压油通过供油口 (8) 进入调制阀。 允许先导压力经过控制滑阀 (6) 到达腔室 (4)。 将腔室 (4) 中的机油经过节流孔 (3) 和排放口 (9) 排放到油池。
选定一个档位并且电磁阀 (1) 接合时，将钢球 (2) 推向节流孔 (3)。 腔室 (4) 中的油压升高。 升高的油压将控制滑阀 (6) 抵住弹簧 (7) 向右移动，使加压油通过离合器加注口 (5) 流入离合器。
当电磁阀 (1) 分离时，腔室 (4) 中的油压使钢球 (2) 脱离。 将腔室 (4) 中的机油经过节流孔 (3) 和排放口 (9) 排放到油池。 随着腔室 (4) 中压力下降，控制滑阀 (6) 被弹簧 (7) 移回左侧。 随着控制滑阀返回到左侧，供油口 (8) 的供油被截留，离合器中的机油通过排放口 (9) 流入油池。
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