C15 and C18 Engines for Caterpillar Built Machines Caterpillar


E363 High Fuel Supply Temperature

Usage:

826K 2L3
产生此代码的情况:

电子控制模块 (ECM) 检测到燃油供应温度过高。 故障诊断与排除, "事件代码"使用事件代码进行故障诊断与排除中提供有本事件代码默认设定值与范围的资料。

系统响应:

ECM 会记录该事件代码。

E363(1)

  • 功率偏低

燃油供应温度高可能会导致喷油器活塞筒内的柱塞发生擦伤。 这将会使喷油器损坏或发生故障。

如果在一段时间内重复记录了 E363,则应使用 Caterpillar 电子技师 (ET) 中的柱状图数据来确定记录代码的过程中的运转状态。 检查事件中的发动机转速、负载和冷却液温度。 这将有助于确定燃油温度高是否是由发动机的运转造成的。

极端的环境空气温度将会使燃油箱内的燃油温度升高。 确定事件中的环境温度。 这也可能混合了油箱中的燃油油位低的因素。 随着未使用的燃油流过缸盖,燃油会吸收热量以便冷却喷油器。 这些未使用的燃油然后返回油箱。 如果燃油箱中的燃油量低,则只要很少的燃油可以吸收回油中的热量。

流回燃油箱的回油油流中的阻塞可能也会导致燃油温度高。

测试步骤 1. 检查发动机的运转状态

  1. 将 Cat ET 连接到维修工具接头上。

  1. 将钥匙开关转到 ON(接通)位置。

  1. 查看 Cat ET 中的在事件发生过程中的柱状图数据。

    使用柱状图数据来确定是否是发动机的运转状态造成了燃油温度高。

预期结果:

柱状图数据未表明运转状态造成了燃油温度高。

结果:

    继续下一测试步骤。

测试步骤 2. 检查燃油系统部件

  1. 检查流回燃油箱的回油油流中有无阻塞。

    1. 检查从发动机到油箱的回油管路的状况。 检查有无坍陷或扭结的管路。 检查燃油管路有无老化和膨胀。

    1. 确认燃油滤清器底座中的压力调节阀工作正常。 检查阀组件中有无损坏或存在污垢。

预期结果:

压力调节阀或通向燃油箱的回油管中存在故障。

结果:

  • 正常 - 压力调节阀或通向燃油箱的回油管中存在故障。

    修复: 进行必要的修理。 确认修理后故障得到排除。请参考系统操作/测试和调整以了解与测试燃油系统有关的信息。

    停止

  • 异常 - 没有发现燃油系统存在机械故障。

    修复: 如果怀疑温度传感器电路中存在电气故障,则请参考故障诊断与排除, "发动机压力传感器开路或短路 - 测试"以了解正确的故障诊断与排除步骤。

    停止

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