During the process of replacing the fuel filter, high-pressure oil pipe, oil pump, etc. in the fuel system of the diesel generator set, or when the fuel pipe is not sealed and the fuel is used up, air may enter the fuel system during this period. If air enters the fuel system, it will cause the air disaster or unstable operation of the unit. Therefore, it is necessary to exhaust the unit, so how to eliminate the air? Now let's introduce it to you by Xiaobian.

一、排除空氣的方法

1、 Method of removing air

1、一般情況下，用起子或扳手?jǐn)Q松噴油泵兩側(cè)上端的任一排氣螺絲數(shù)圈。用手按壓手動(dòng)油泵15-20次，至排出的柴油連續(xù)通暢無(wú)氣泡，發(fā)出“吱吱”的聲音為止。擰死放氣螺釘，將手動(dòng)油泵按壓回至原位。

1. Generally, use a screwdriver or wrench to loosen any exhaust screw at the upper end of both sides of the fuel injection pump for several turns. Press the manual oil pump by hand for 15-20 times until the discharged diesel oil is smooth without bubbles and makes a "squeak" sound. Tighten the vent screw and press the manual oil pump back to its original position.

2、如果手頭沒(méi)有打開(kāi)噴油泵上放氣螺釘?shù)暮线m起子或扳手，可先擰開(kāi)手油泵，然后松開(kāi)從柴油濾清器至噴油泵之間的任何一個(gè)管接頭，然后再通過(guò)反復(fù)按壓手油泵至從該接頭中排出通暢無(wú)氣泡的油流即可，然后邊按壓手油泵邊緊固該接頭，然后再將手油泵撳壓回原位即可。

2. If you don't have a suitable driver or wrench to open the vent screw on the fuel injection pump, you can first unscrew the hand pump, then loosen any pipe connector from the diesel filter to the fuel injection pump, and then press the hand pump repeatedly until a smooth and bubble free oil flow is discharged from the connector, then tighten the connector while pressing the hand pump, and then press the hand pump back to its original position.

3、如果手頭無(wú)松開(kāi)管路中接頭的扳手時(shí)，可以通過(guò)反復(fù)的按壓你的手油泵，至輸油泵到噴油泵段低壓油路壓力足夠高時(shí)，燃油從溢流閥中流入燃油回油管路，油路中的氣體就會(huì)從溢流閥中排出。

3. If you do not have a wrench to loosen the connector in the pipeline, you can press your hand oil pump repeatedly until the pressure of the low-pressure oil circuit from the oil transfer pump to the fuel injection pump section is high enough, the fuel flows into the fuel return pipeline from the overflow valve, and the gas in the oil circuit will be discharged from the overflow valve.

4、如果在途中，需要排除油路中的空氣，可以先松開(kāi)噴油泵上的放氣螺釘或松開(kāi)柴油濾清器與噴油泵之間的任意一個(gè)接頭，然后通過(guò)起動(dòng)驅(qū)動(dòng)機(jī)械輸油泵。該漏點(diǎn)就會(huì)噴出通暢且無(wú)氣泡的燃油，這時(shí)再擰緊松開(kāi)的上述漏點(diǎn)就可以了。

4. If the air in the oil circuit needs to be removed on the way, loosen the bleed screw on the fuel injection pump or loosen any connector between the diesel filter and the fuel injection pump, and then drive the mechanical fuel transfer pump by starting. The leak point will eject unobstructed and bubble free fuel. At this time, it is OK to tighten the loosened leak point.

二、注意事項(xiàng)

2、 Precautions

1、不可在柴油機(jī)熱機(jī)狀態(tài)排氣，燃油如果噴到熾熱排氣管上，將會(huì)造成火災(zāi)。

1. Do not exhaust when the diesel engine is hot. If the fuel is sprayed on the hot exhaust pipe, it will cause a fire.

2、應(yīng)防止高壓燃油損傷皮膚。

2. High pressure fuel should be prevented from damaging the skin.

3、裝有通電型斷油閥的發(fā)電機(jī)組燃油系統(tǒng)的排氣時(shí)，一定要先將控制屏內(nèi)標(biāo)。

3. When exhausting the fuel system of a generator set equipped with an energized fuel cut-off valve, the control panel must be marked first.

4、有“FCR”中間繼電器上的按鈕拔出后再開(kāi)始排氣操作，排氣結(jié)束后要將“FCR”中間繼電器上的按鈕壓下復(fù)位。

4. After the button on the "FCR" intermediate relay is pulled out, the exhaust operation can be started. After the exhaust, press the button on the "FCR" intermediate relay to reset.

5、油路排氣時(shí)，用扳手?jǐn)Q松各處排氣螺釘，上下扳動(dòng)輸油泵手柄泵油，直至出油中沒(méi)有氣泡后擰緊排氣螺釘即可。

5. When exhausting the oil circuit, loosen the exhaust screws with a wrench, pull the handle of the oil transfer pump up and down to pump oil until there are no bubbles in the oil outlet, and then tighten the exhaust screws.

6、一般經(jīng)過(guò)低壓油路的排除空氣，機(jī)組就可啟動(dòng)。如還需要排除高壓油管中的空氣，松開(kāi)高壓油管在噴油器一端的螺帽，按壓手動(dòng)油泵，直至所溢出的燃油中無(wú)氣泡后擰緊螺帽。如此逐缸進(jìn)行，使各缸噴油器中充滿燃油。

6. Generally, the unit can be started after the air is discharged through the low-pressure oil circuit. If it is necessary to remove air from the high-pressure fuel pipe, loosen the nut of the high-pressure fuel pipe at one end of the fuel injector, press the manual oil pump until there is no bubble in the spilled fuel, and then tighten the nut. This is done cylinder by cylinder so that the fuel injectors of each cylinder are filled with fuel.

7、如果氣體仍不能排凈，應(yīng)檢查管路是否有漏氣情況。

7. If the gas cannot be discharged completely, check whether there is air leakage in the pipeline.

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