3500B Engines for 776D, 777D, 784C, 785C, 789C and 793C Off-Highway Trucks Caterpillar


Event Codes

Usage:

785C 1HW
使用本节对生成了事件代码但没有当前诊断代码的问题进行故障诊断和排除。 生成事件代码时,该事件处于当前状态。 生成的任何代码都会记录在电子控制模块(ECM)的永久存储器中。

事件代码提醒操作员检测到发动机工作状况异常,如机油压力低或冷却液温度高。 这些事件并不涉及电子系统的故障。 事件代码还可说明问题的性质。 可在安装了卡特彼勒电子技师(ET)软件的个人计算机上查看事件代码。




图 1g00740986

典型示例

图 1 说明了冷却液温度传感器的输出电压。 如果传感器的输出信号在 4.2 伏到 4.8 伏之间,则会生成一个冷却液温度高于正常值的事件代码。

可对发动机进行设置,以在某些应用场合执行以下操作:

  • 发动机警告

  • 发动机功率降低

  • 发动机停机

可使用卡特彼勒 ET 开启和关闭这些功能的显示。 开启功能显示时,电子监控模块会显示这些功能,同时会有一个事件记录在 ECM 上。 关闭功能显示时,监控模块不会显示这些功能,但 ECM 仍会记录相应事件。

系统事件代码

表 1
3500B 系统事件代码    
事件代码     说明    
E017     发动机冷却液温度高警告    
E021     排气温度高,功率下降    
E035     没有冷却液流警告    
E038     发动机冷却液温度低警告    
E072     机油油位标记低    
E073     机油滤清器压差高    
E074     机油滤清器差压过高    
E092     增压压力高于正常值    
E093     增压压力低于正常值    
E095     燃油滤清器堵塞警告    
E098     发动机预润滑超弛    
E100     发动机机油压力低警告    
E101     曲轴箱压力高警告    
E190     发动机超速警告    
E265     用户定义停机    
E272     进气堵塞警告    

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