Crankcase Breather Ejects Oil
曲轴箱通气孔滤筒包括可以防止通气孔滤筒形成过多压力的压力安全阀。
在发动机正常运行情况下，压力安全阀保持关闭。 如果通气孔滤筒后面的缸盖上有油渍，请执行以下步骤诊断故障。
可能原因
- 呼吸器滤清器
- 通气孔软管
- 窜气过多
建议的措施
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 | |
| 图 1 | g03758596 |
典型通气孔滤筒 (1) 呼吸器滤罐盖 (2) 滤清器滤芯 (3) 通气孔滤筒 | |
注: 下面以概率的先后顺序列出了这些步骤。 依次完成这些步骤。
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| 故障诊断与排除测试步骤 | 数值 | 结果 |
|---|---|---|
1. 通气孔滤清器 A. 检查滤清器滤芯 (2) 是否正确安装以及滤芯有无损坏。 B. 检查呼吸器滤罐 (3) 有无受阻或堵塞。 注：在寒冷天气下，呼吸器滤罐的出口会结冰。 |
滤清器 |
结果：滤清器滤芯 (2) 安装不当或滤芯损坏。 修理：正确安装滤清器滤芯或更换滤清器滤芯。 结果：呼吸器滤罐阻塞或堵塞。 修理：清洁呼吸器滤罐内部。 结果：呼吸器清洁且工作正常。 转至测试步骤 2。 |
2. 通气孔软管 A. 确保通气孔滤筒的回油软管没有挤压或堵塞。 B. 确保通气孔滤筒的通气孔出口软管没有挤压或堵塞。 |
软管 |
结果：一个或多个软管挤压或堵塞。 修理：清理软管或更换软管。 结果：所有软管均通畅。 转至测试步骤 3。 |
3. 窜气过多 注：窜气过多会增加通过呼吸器系统的烟雾流量，从而导致呼吸器滤清器堵塞。 压力安全阀可能随后打开。 A. 检查发动机有无多余的窜气。 |
窜气 |
结果：窜气过多。 修理：更换呼吸器滤清器。 调查窜气过多的原因。 请参阅故障诊断与排除, "机油消耗过多"。 结果：窜气没有过量。 请联系代理商解决方案网络 (DSN)。 |
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