C13, C15, and C18 Tier 4 Interim Engines Caterpillar


Diesel Particulate Filter Has Low Inlet Pressure

Usage:

C18 BDN
系统运作描述:

柴油微粒滤清器(DPF)低进口压力的可能原因是排气泄漏。

如果下列事件代码激活,采用此步骤。 关于事件代码的信息,请参阅故障诊断与排除, "事件代码"。

注: 以下某些代码可能不适用于特定的应用。

表 1
故障诊断代码    
CDL 代码     J1939 代码     代码说明
(代码说明可能不同)    
注释    
E1154(1)     3609-17     低 DPF #1 进气压力     记录该代码。    
E1154(2)     3609-18     低 DPF #1 进气压力     记录该代码。    

表 2
故障诊断与排除测试步骤     数值     结果    

1. 检查排气系统是否泄漏

A. 检查排气系统的排气歧管和 ARD 后处理组件进口之间是否泄漏。

B. 检查排气系统有无松动的接头或敞开的端口。
   

排气泄漏    

结果:排气系统泄漏。

修理排气系统。 将发动机重新投入使用。

结果:排气系统没有泄漏。

转至测试步骤 2。
   

2. 检查 DPF 压差管、接头和歧管

A. 确保 DPF 压差管连接紧固并且无泄漏。

B. 确保 DPF 压差管、接头、歧管无阻塞。 确保湿气未在管、接头和歧管内结冰。
   

阻塞    

结果:DPF 压差管、接头和歧管连接紧固并且无泄漏和阻塞。

转至测试步骤 3。

结果:DPF 压差管未连接或管、接头和歧管存在泄漏和阻塞。

清洁、修理或更换管。 清除所有代码。 执行 ARD Ignition Test(ARD 点火测试)。

如果 ARD Ignition Test(ARD 点火测试)成功,则将发动机重新投入使用。

如果 ARD Ignition Test(ARD 点火测试)失败,则转至测试步骤 3。
   

3. 检查柴油微粒滤清器

A. 检查 DPF 的进口。 检查 DPF 有无缺失或损坏的 DPF 砖。
   

DPF 砖损坏    

结果:DPF 有损坏或缺失的 DPF 砖。

更换损坏 DPF 或缺失的 DPF 砖。 将发动机重新投入使用。
   

测试步骤 1.

按所列步骤顺序完成以上步骤。

结果:

  • 以上步骤解决了此问题。 - 停止

  • 以上步骤没有解决问题。 -

    修复: 联系当地 Cat 代理商的技术通信员(TC)。 如需进一步的帮助,您的 TC 可以通过代理商解决方案网络(DSN)与您交谈。

    停止

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