Manifold Air Pressure Sensor
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需要的工具 | 数量 | |
1U-5470 发动机压力表总成 | 1 |
绝对压力 - 绝对压力是表压力加上当地大气压力。
表压力 - 表压力是绝对压力减去当地大气压力。
歧管空气压力传感器也称为进气压力传感器。进气压力传感器测量进气歧管空气绝对压力。
为了确认进气压力传感器是否准确,当发动机停机时,使用卡特彼勒电子技师(ET)阅读"进气歧管空气压力(abs)"。 正确的压力将是外界大气压力。
使用下列程序将进气压力传感器与 1U-5470 发动机压力表总成的压力相比较。
注: 可将进气压力传感器安装在进气歧管的任意一端。实际的位置取决于控制系统的配置。
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图 1 | g00929850 |
发动机后部右视图 空气进气歧管的塞子 |
从空气进气歧管上拆下一个塞子。 从孔口到 1U-5470 发动机压力表总成的一个压力表之间连接一根管。 发动机在负载下运转。 使用卡特彼勒 ET 阅读进气歧管空气压力。 阅读 1U-5470 发动机压力表总成的表压力并加上当地大气压力。 将计算值与卡特彼勒 ET 的读数进行比较。
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