Engine Has Mechanical Noise (Knock)
- 隔离噪音源。
- 配气机构部件
- 活塞
- 曲轴
- 齿轮系
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| 故障诊断与排除测试步骤 | 数值 | 结果 |
|---|---|---|
1. 隔离噪音源 A. 如果噪音源为发动机附件，则拆下可疑的发动机附件。 检查可疑的发动机附件。 |
发动机附件 |
结果 发动机附件不是噪音源。 修理：转至下一步骤 结果 发动机附件是噪音源。 修理：如有必要，修理和/或更换发动机附件。 如果故障未得到排除，转至下一步骤。 |
2. 检查配气机构部件 A. 拆下气门机构盖和凸轮轴盖。 B. 检查以下部件有无损坏： - 凸轮轴 - 气门弹簧 - 挺杆 - 推杆 - 气门桥 C. 有关更多信息，参考拆解和装配。 D. 彻底清洁配气机构部件。 确保所有气门都能自由运动。 更换所有损坏的零件。 E. 发动机以额定转速操作时，可观察和测量气门旋转。 |
配气机构 |
结果：配气机构部件未损坏。 修理：转至下一步骤。 转至下一测试步骤 结果：配气机构部件损坏。 修理：如有必要，修理和/或更换发动机部件。 如果故障未排除，转至下一测试步骤。 |
3. 检查活塞有无损坏和磨损。 |
活塞 |
结果：活塞正常。 修理：转至下一测试步骤 结果：活塞不正常。 修理：执行必要的修理或更换。 如果故障未得到排除，转至下一步骤。 |
4. 检查曲轴 A. 检查曲轴和相关部件。 查找止推片和曲轴有无磨损。 B. 检查曲轴上的连杆轴承和轴承表面。 确保轴承处于正确位置。 C. 检查配重螺栓。 |
曲轴 |
结果：曲轴或相关部件损坏或磨损。 修理：修理或更换任何损坏零件。 确认修理后故障得到排除。 如果故障未排除，转至下一测试步骤。 |
5. 检查齿轮系 A. 检查齿轮系和下端部件。 |
齿轮系 |
结果：齿轮系正常。 结果：齿轮系不正常。 修理：修理或更换任何损坏零件。 确认修理后故障得到排除。 |
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