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如何判斷燃油高壓噴油泵出油閥彈簧折損

2023/12/27 14:25:28??????點擊:

問題:柴油機啟動后,油溫在30℃以上,水溫在40℃以上,達到基本轉速時,氣缸有特別響的敲缸聲,是不是高壓噴油泵出油閥彈簧折損呢?

    判斷方法:1.始終使柴油機保持在基本轉速。2.用拇指、食指和中指指尖輕觸高壓油管,與其他缸相比較,油流脈沖弱,且分界點不清晰。3.檢查這個缸高壓泵供油尺條刻線位置,如果與其他缸不一致,可人為使其處于同一位置。此時,仍有較大敲缸聲。4.退出供油尺條甩缸后,敲缸聲消失,但高壓油管仍有輕微振動。5.甩缸后,用27毫米扳手將高壓泵與高壓油管接頭松開半圈或一圈,燃油有規律噴出。根據以上檢查分析,可以判斷為這個缸出油閥彈簧折損,及時更換,排除故障。

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