Manifold Air Pressure Sensor
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所需工具 | 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。
进气歧管压力传感器测量进气歧管空气绝对压力。
为了确认进气歧管压力传感器是否准确,当发动机停机时,使用 Caterpillar 电子技师(ET)读取进气歧管空气压力。 正确的压力将是外界大气压力。
使用以下步骤以确认进气歧管压力传感器正确。
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图 1 | g00814388 |
空气进气歧管的螺塞 |
将其中一个螺塞从从空气进气歧管上拆下。 将一根管路自从孔口连接到 1U-5470 发动机压力总成的压力表。 发动机在负载下运转。 使用 Cat ET 读取进气歧管空气压力。 读取 1U-5470 发动机压力总成上的压力表并在读数上加上当地大气压力。 将计算值与 Cat ET 的读数进行比较。
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