Solenoid Valves
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| 图 1 | g00791122 |
变速箱电磁阀 | |
系统中有四个电磁阀。 这些电磁阀由 ECM 激活。 系统中采用以下电磁阀：行驶控制, 马达排量, 前进方向 和 后退方向。
前进方向电磁阀的功能控制变速箱中的油流。 变速箱方向电磁阀以相同方式工作。
行驶控制电磁阀控制液压系统中的油流。
在标准机器上，马达排量电磁阀是接通或断开阀。 ECM 激活电磁阀。 电磁阀选择机器的速度范围。 高速机器有比例电磁阀。
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| 图 2 | g00348694 |
比例电磁阀 | |
电磁阀从 ECM 接收电压。 该电磁阀有一个两触点式接头。 在带有电子变速箱控制装置的机器上，一个触点接收电源。 所有电磁阀的第二个触点连接在一起。
Caterpillar Information System:
3512 and 3516 EUI Engines and 784B, 785B, 789B and 793B Off-Highway Truck/Tractors Exhaust Manifold
836G Landfill Compactor and 834G Wheel Dozer Transmission Control
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