3516C and C175-16 Engines Selective Catalytic Reduction Caterpillar


Aftertreatment SCR System Dosing - Test

Usage:

3516C LY6
通过以下这些 Cat ET 菜单访问此测试:

  • 诊断

  • 诊断测试

此测试用于帮助喷射泵的故障诊断与排除。 使用此测试确认喷射泵的操作是否正确。

  1. 从喷射机柜的 DEF 出口处拆下柴油机排气处理液(DEF)压力管路。

  1. 将来自 464-1955 工具总成 的 DEF 管路安装到喷射机柜的出口上。

  1. 将 DEF 管路引入包括在 464-1955 工具总成 中的容器内。

  1. 执行"后处理 SCR 系统喷射测试"。

    泵将以预定速度运转。 经过一段预定时间后,泵将自动切断。

  1. 测量输送到容器中的 DEF 量。

    发动机运转 442-7939 软件的正确输送量为 1000 ± 100 mL (34 ± 3.4 oz)。

    所有其它软件版本的正确输送量为 2000 ± 200 mL (68 ± 6.8 oz)。

    注: 执行此测试时,测试软管可额外包含多达 140 mL (4.76 oz) 的液体。 如果此液体排放到测试容器中,DEF 总量将为 2145 ± 200 mL (73 ± 6.8 oz)。

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