Metal Particle Detector
发动机有一个金属颗粒探测器。 探测器为电子传感器，可以检测发动机机油中的金属颗粒。
来自磨损部件，如轴承、活塞环、齿轮的金属颗粒可以悬浮在发动机机油中。 检测到颗粒将启动警报或停机，以便提醒操作员该情况。 然后进行可防止高成本修理的正确保养。 例如，更换主轴承可防止更换曲轴的需要。
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电网示意图 (A) 开路 (B) 闭路 | |
发动机机油持续循环流过探测器。 探测器含有一块带有镀锡电网的穿孔板。 电网为开路。 发动机机油在电网之间流动。 如果金属颗粒填充了电网间隙，电路则闭合。
金属颗粒探测器输入至 ECM（Electronic Control Module，电子控制模块）。 该输入根据时间长度和/或检测的金属颗粒数量，将生成发动机警告或使发动机停机。
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