Engine Top Speed Is Not Obtained
使用此步骤对发动机无法达到发动机高怠速转速的抱怨进行故障诊断与排除。
- 诊断代码、事件代码
- 配置参数
- 进排气系统
- 油门信号
- 发动机机械故障
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| 故障诊断与排除测试步骤 | 数值 | 结果 |
|---|---|---|
1. 配置参数 A. 利用 Cat ET 确认是否正在使用正确的发动机参数。 关于更多信息，参考故障排除, "配置参数"。 B. 确认所有寄生负载参数正确。 |
参数 |
结果：参数配置正确。 转至下一步。 结果：参数配置不正确。 正确配置参数。 确认修理后故障得到排除。 |
2. 进排气系统 A. 检查空气滤清器阻塞指示器（如有配备）。 清洁阻塞的空气滤清器或更换阻塞的空气滤清器。 请参考操作和保养手册。 B. 检查进气和排气系统有无阻塞和/或漏气。 |
阻塞 |
结果：进排气系统无阻塞。 转至下一步。 结果：进排气系统阻塞。 进行必要修理，并确认通过修理排除了故障。 |
3. 油门信号 A. 在从低怠速位置向高怠速位置升高发动机转速的同时，监控 Cat ET 上的 "Throttle Position（油门位置）"参数。 确认在转换过程中，"Throttle Position（油门位置）"信号没有出现不稳定情况。 |
油门信号 |
结果：信号正常。 转至下一步。 结果：信号不正常。 修理：如果怀疑信号存在故障，请参阅故障诊断与排除, "燃油控制 - 测试"以了解对油门信号电路进行故障诊断与排除的相关信息。 |
4. 发动机机械故障 A. 检查有无与气门机构磨损、气门机构损坏或气缸压缩压力低相关的发动机机械故障。 压缩压力低的可能原因如下所列： - 活塞故障 - 活塞环故障 - 缸套磨损 - 气门磨损 - 缸盖密封垫故障 - 缸盖损坏 |
机械故障 |
结果：没有发动机机械故障迹象。 结果：有机械故障迹象。 修理：找到故障并进行所有必要的修理。 确保进行的修理排除了故障。 |
Caterpillar Information System:
C18 Generator Sets Product Description
3512C and 3516C Marine Auxiliary Engines Intake Manifold Air Pressure Is High
C175-16 Marine Propulsion Engines Engine Shutdown Override Occurrence
C175-16 Locomotive Engine Engine Overspeeds
3512C and 3516C Marine Auxiliary Engines Intake Manifold Air Temperature Is High
3512C and 3516C Marine Auxiliary Engines Fuel Pressure Is High
Loss of Nitrogen Precharge in Rear Suspension Group on Certain Off-Highway Trucks{7201, 7213} Loss of Nitrogen Precharge in Rear Suspension Group on Certain Off-Highway Trucks{7201, 7213}
2012/03/13 New Engine Software Is Used with Certain C9 Generator Sets in Stand-by Applications {1901, 1920}
C175-16 Locomotive Engine Inlet Air Is Restricted
2012/03/13 A New Gear Train Is Used on Certain C18 Marine Engines {1151, 1162, 1202, 1206, 1212, 1313, 1361, 1371, 3108}
3516B Generator Set Engines with Dynamic Gas Blending Alternator Problem - Charging Problem and/or Noisy Operation
C175-16 Marine Propulsion Engines Coolant Temperature Is High
C13, C15, and C18 Tier 4 Final Engines DEF Tank Sensor - Test
C13, C15, and C18 Tier 4 Final Engines DEF Line Heater - Test
C13, C15, and C18 Tier 4 Final Engines DEF Control Module Temperature Is High
C13, C15, and C18 Tier 4 Final Engines Clean Emissions Module Has High Oxygen Level
C13, C15, and C18 Tier 4 Final Engines Sensor (Data Link Type) - Test
C175-16 Engines for Off-Highway Truck/Tractors Exhaust Has Excessive White Smoke
3512B and 3512C Petroleum Generator Set Engines Oil Pressure Is Low
Vital Information Management System (PL GSM) (523) ECM Reset on Snapshot Download in Certain Cat Products{7602, 7606, 7610, 7620} Vital Information Management System (PL GSM) (523) ECM Reset on Snapshot Download in Certain Cat Products{7602, 7606, 7610, 7620}
C18 Generator Set Refill Capacities
2012/04/05 Design Changes to the Electronic Thermostat on C175-16 Petroleum Engines {135V, 4490, 5927, 7610}
C18 Generator Sets Electronic Modular Control Panel 4 (EMCP 4) - EMCP 4.1/4.2
Diagnostic Supplement for the Cat Regeneration System for C13 and C15 Engines{108D} Diagnostic Supplement for the Cat Regeneration System for C13 and C15 Engines{108D}