C280 Marine Propulsion Engines Caterpillar


Poor Fuel Consumption

Usage:

C280-6 LDL

可能原因

  • 电气接头

  • 喷油器

  • 燃油供给

  • 进气阻力

  • 排气阻力

  • 附属设备

建议的措施

电气接头

检查电子控制模块(ECM)接头 J2/P2 是否正确安装。 检查适用的喷油器接头是否正确安装。 请参阅故障诊断与排除, "检查电气接头"。

喷油器

检查有无与喷油器电路有关的激活的诊断代码。 检查是否输入了喷油器校准代码。 执行"喷油器电磁阀测试"。 确认 ECM 通电激励了所有喷油器电磁阀。 请参阅故障诊断与排除, "喷油器电磁阀"中的诊断功能测试。

燃油供给

  1. 检查燃油管路有无以下故障:阻塞, 皱缩管路 和 挤压管路。 如果发现燃油管路有故障,则应修理和/或更换管路。

  1. 检查燃油油箱有无可能会堵塞供油的外物。

  1. 如果进行以下任何步骤,则应排出燃油系统的空气:

    • 更换燃油滤清器

    • 维护燃油低压供油油路

    • 更换单体喷油器

    请参阅操作和保养手册以了解正确的步骤。

  1. 低温天气会对燃油特性带来不利影响。 请参阅操作和保养手册,了解有关改善低温运作中燃油特性的信息。

  1. 在发动机拖动过程中检查燃油压力。 在燃油滤清器之后检查燃油压力。 请参阅发动机的系统操作/测试和调整手册,了解正确的压力值。 如果燃油压力偏低,更换燃油滤清器。 如果燃油压力仍旧偏低,检查以下各项:输油泵, 输油泵联轴器 和 燃油压力调节阀。 请参阅系统操作/测试和调整,了解更多资料。

进气阻力

检查发动机空气滤清器。 更换和 / 或清洁阻塞的空气滤清器。 检查进气系统有无阻塞和漏气。

排气阻力

检查排气系统有无阻塞和漏气。

附属设备

检查连接的附属设备。 确保附属设备没有使发动机超载。

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