Air Control Valve (Retarder)
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| 图 1 | g00526860 |
缓速器空气控制阀位置 | |
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| 图 2 | g00526861 |
缓速器空气控制阀底视图 (1) 出气端口 (2) 排气端口 (3) 供气端口 | |
缓速器空气控制阀是手动操作的控制阀。 当操作员需要使机器减速时，缓速器空气控制阀可提供可调供气量，以施加行车制动器。 行车制动器和缓速器空气罐中的供气流入供气端口 (3) 。 当缓速器手控制杆移出断开位置时，缓速器空气控制阀使空气从供气端口 (3) 流向并穿过出气端口 (1) 。 缓速器手控制杆的位置使得阀门能够调节流向制动器空气中继阀的空气的出口压力。
当缓速器手控制杆处于断开位置时，供气端口 (3) 处系统压力下的空气被阻断，无法流向出气端口 (1) 。 当释放缓速器手控制杆后，空气压力通过排气端口 (2) 释放。
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