The power drop during the use of generator sets is mostly caused by insufficient fuel supply and insufficient air supply.

燃油供給不足

Insufficient fuel supply

1、發(fā)電機組低壓油路供油不暢的原因是：油箱油量不足；油箱蓋通氣孔堵塞；油箱出口濾網(wǎng)堵塞，油箱開關(guān)堵塞或開度不夠；濾清器堵塞。

1. The reasons for the poor oil supply of the low-pressure oil circuit of the generator set are: insufficient oil in the oil tank; The vent hole of the fuel tank cover is blocked; The filter screen at the outlet of the oil tank is blocked, and the oil tank switch is blocked or the opening is not enough; The filter is blocked.

2、發(fā)電機組噴油泵供油不足的原因是：柱塞及出油閥磨損，引起泄漏；出油閥墊不嚴密引起泄漏；油泵滾輪及供油凸輪磨損使供油有效行程變小等。

2. The reasons for the insufficient oil supply of the fuel injection pump of the generator set are: the plunger and oil outlet valve are worn, causing leakage; The oil outlet valve gasket is not tight, causing leakage; The wear of oil pump roller and oil supply cam reduces the effective stroke of oil supply, etc.

3、發(fā)電機組噴油器噴油少的原因是：噴油器針閥偶件磨損，使回油增多；噴油壓力過高，噴油延續(xù)時間短，噴油器回油管堵塞等。噴油器回油增多和不回油的檢查方法：擰松噴油器回油管接頭螺絲，如有較多不斷流出，說明針閥磨損，應(yīng)予以更換。如果回油管

3. The reason why the fuel injector of the generator set injects less fuel is that the needle valve coupling of the fuel injector is worn, which increases the return oil; The injection pressure is too high, the injection duration is short, and the fuel injector return pipe is blocked. Inspection method for increased return oil and no return oil of the fuel injector: loosen the connector screws of the fuel injector return pipe. If there is more and more continuous outflow, it indicates that the needle valve is worn and should be replaced. If the oil return pipe

不回油，會使噴油器上腔燃油增多，壓力增大，針閥在打開時上行阻力大，導(dǎo)致噴油器工作性能惡化，應(yīng)清理堵塞物。

If the fuel is not returned, the fuel in the upper chamber of the injector will increase, the pressure will increase, and the upward resistance of the needle valve will be large when it is opened, resulting in the deterioration of the working performance of the injector. The blockage should be removed.

空氣供給不足

Insufficient air supply

1、發(fā)電機組空氣濾清器堵塞：觀察康明斯發(fā)電機排氣管，如果在空轉(zhuǎn)時冒黑煙，或稍加負荷就冒黑煙，表明氣缸進氣不足，致使噴入的不能完全燃燒，應(yīng)清洗或更換濾芯。

1. The air filter of the generator set is blocked: observe the exhaust pipe of Cummins generator. If black smoke is emitted during idling or with a little load, it indicates that the air intake of the cylinder is insufficient, so that the injected air cannot be completely burned. The filter element should be cleaned or replaced.

2、發(fā)電機組的氣缸壓力不足：氣缸壓力不足多為氣缸漏氣引起，要重點對其氣缸進行維修。

2. Insufficient cylinder pressure of generator set: the insufficient cylinder pressure is mostly caused by cylinder leakage, and the maintenance of its cylinder should be focused.

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