3176C Engines for Caterpillar Built Machines Caterpillar


E031 Air Inlet Restriction Derate

Usage:

3176C 7ZR
产生此代码的情况:

电子控制模块(ECM)检测到进气阻力高于默认压力。 可在故障诊断与排除, "事件代码"中找到有关此事件代码缺省设置及范围的信息。

系统响应:

事件代码会记录下来。 进气阻力超过 7 kPa (28 in H2O(水柱))时,ECM 将使发动机减额。 ECM 将使发动机以每 1 kPa (4 in H2O(水柱)) 2% 的增量减额,直到达到 25% 的最大减额水平。 通过测量大气压力和涡轮增压器进口压力并计算差值,确定空气滤清器阻塞。

可能对性能的影响:

功率偏低

故障诊断和排除:

  • 进气系统可能存在故障。

  • 大气压力传感器或者左侧或右侧涡轮增压器进口压力传感器可能存在故障。

测试步骤 1. 检查有无"激活"的诊断代码。

  1. 启动 Caterpillar 电子技师(ET)。

  2. 将电源转到接通位置。

  3. 检查有无任何激活的或记录的诊断代码。

预期结果:

应无任何诊断代码存在。

结果:

  • 正常 - 应无任何诊断代码存在。 继续测试步骤 2。

  • 异常 - 存在诊断代码。

    修复: 修理出现的诊断代码。 请参阅本手册"利用诊断代码进行故障诊断和排除"章节中的相关专题。 确保修理后故障被排除。

    停止

测试步骤 2. 执行进气系统检查。

  1. 检查进气系统中有无阻塞。 检查空气滤清器。

预期结果:

进气系统不存在故障。

结果:

  • 正常 - 进气系统不存在故障。 可能存在间歇性故障。

    修复: 监测发动机的运行。 修理故障。 确保修理后故障被排除。

    停止

  • 异常 - 进气系统存在故障。

    修复: 修理故障。 确保修理后故障被排除。

    停止

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