柴油發電機組燃油供給系統確無故障后，這時候我們可以根據檢查中對燃燒、壓縮方面是否出現的異常情況進行診斷分析。我們在觀察的過程中，當起動時聽到進排氣管內有“嗤嗤”氣流聲，這就說明進排氣門有漏氣現象。其實造成進排氣門漏氣的原因有：氣門間隙調整不當或氣門間隙過小。如果減壓閥調整過緊會造成氣門關閉不嚴而漏氣，在排除這方面故障后，應對氣門漏氣等件進行檢查，氣門漏氣的主要原因有：玉揚動力濰坊柴油發電機組小編給您分析：

After confirming that there are no faults in the fuel supply system of the diesel generator set, we can diagnose and analyze whether there are any abnormal situations in the combustion and compression aspects during the inspection. During our observation, when starting, we hear a "hissing" sound of airflow inside the intake and exhaust pipes, which indicates that there is air leakage in the intake and exhaust valves. In fact, the reasons for air leakage in the intake and exhaust valves are: improper adjustment of valve clearance or too small valve clearance. If the pressure reducing valve is adjusted too tightly, it will cause the valve to close loosely and leak air. After troubleshooting this issue, it is necessary to inspect the valve leakage and other components. The main reasons for valve leakage are: Yuyang Power Weifang Diesel Generator Set Editor will analyze for you:

1、氣門與氣門座的密封環帶燒蝕；

1. The sealing ring of the valve and valve seat is burned out;

2、氣門與氣門座的密封環帶過寬或者密封環帶沾有雜物；

2. The sealing ring of the valve and valve seat is too wide or contaminated with debris;

3、氣門桿積碳嚴重，咬合導管，氣門桿彎曲，造成氣門關閉不嚴；

3. Severe carbon accumulation on the valve stem, biting the guide tube, and bending the valve stem, causing the valve to not close tightly;

4、氣門彈簧斷裂，或者彈性變弱；

4. Valve spring fracture or weakened elasticity;

5、氣門桿與導管因磨損嚴重而配合間隙超限。

5. The clearance between the valve stem and guide tube exceeds the limit due to severe wear.

供油提前角不準確。調整時松開噴油泵上三只固定螺母，適當調整噴油泵的裝配角度，供油時間過遲將噴油泵上部往機體方向轉動，供油時間過早將油泵上部向外轉動。若是轉動到極限仍不能調準供油時間，則齒輪裝配上有錯誤。

The fuel supply advance angle is not accurate. During adjustment, loosen the three fixing nuts on the fuel injection pump, and properly adjust the assembly angle of the fuel injection pump. If the fuel supply time is too late, rotate the upper part of the fuel injection pump toward the engine body, and if the fuel supply time is too early, rotate the upper part of the fuel injection pump outward. If the oil supply time cannot be adjusted even after reaching the limit, there is an error in gear assembly.

（1）記號對錯，記號對錯油兩種可能，一是齒輪記號打錯位置；二是裝配中沒有依照齒輪上的記號一一對位。油泵內凸輪軸的磨損也會影響供油時間，這種故障必須有專業知識的人員修理。

(1) There are two possibilities for the mark to be right or wrong, one is to mark the gear in the wrong position; Secondly, during assembly, there was no one-to-one alignment according to the markings on the gears. The wear of the camshaft inside the oil pump can also affect the fuel supply time, and such faults must be repaired by personnel with professional knowledge.

（2）噴油泵齒輪鍵槽沒有對準油泵軸上的半圓鍵。

(2) The gear keyway of the fuel injection pump is not aligned with the half circle key on the oil pump shaft.

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This article provides technical support from coking gas power generation units. For more detailed and exciting content, please click on our website https://www.huannengpower.cn We will wholeheartedly provide you with satisfactory service.