C13, C15, and C18 Tier 4 Final Engines Caterpillar


DEF Does Not Purge

Usage:

826K 232

表 1
故障诊断代码    
J1939 代码     CDL 代码     代码说明     注释    
3362-14     E114(1)     后处理 1 柴油机排气处理液喷射单元输入线路:专门说明书     关闭发动机后,DEF 系统没有完全排净。
记录该代码。    


注意

发动机停止后等待 2 分钟,然后再将蓄电池断路开关转到断开位置。 DEF 系统需要 2 分钟,以便从系统部件中自动排放柴油机排气处理液(DEF)。 未能完成净化可能会损坏 SCR 系统。


表 2
相关代码    
J1939 代码     CDL 代码    
3118-5     4374-5    
3118-6     4374-6    
4334-16     E930(2)    
4376-5     3862-5    
4376-6     3862-6    
5966-6     3965-6    
6309-6     3966-6    

按所列步骤顺序完成以上步骤。

表 3
故障诊断与排除测试步骤     数值     结果    

1. 查看 Cat® ET 中的"后处理异常停机历史"

A. 利用 Cat ET 连接到发动机 #1 后处理控制器。

B. 转至"后处理异常停机历史"。 选择 Cat® ET 菜单中的 "Information(信息)"选项卡,然后选择 "History(历史)"选项卡。

C. 查看发动机停机类型有无冷停机发生。

D. 如果"后处理异常停机历史"显示不允许系统进行 2 分钟整的净化,则会通知操作员在钥匙开关断开后等待 2 分钟,再将蓄电池断路开关转到断开位置。
   

DEF 泵    

结果:在将蓄电池断路开关转到断开位置之前,不允许系统进行 2 分钟的净化。

通知操作员在钥匙开关断开后等待 2 分钟,然后再将蓄电池断路开关转到断开位置。
使机组返回工作。

结果:在将蓄电池断路开关转到断开位置之前,允许系统进行 2 分钟的净化。

转至测试步骤 2。
   

2. 检查有无相关的故障诊断代码

A. 利用 Cat ET 连接到发动机 #1 后处理控制器。

B. 检查有无相关的诊断故障代码。
   

诊断故障代码    

结果:相关的诊断故障代码存在。

修理:对相关代码进行故障排除。
   

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