The valve of the diesel generator set is an important part of the unit, which directly affects the sealing and related performance of the unit. Moreover, its working environment is relatively bad, and it will be subjected to strong mechanical load, high temperature, chemical corrosion and other effects. It must be installed correctly. The valve shall not be bumped during unpacking and transportation. During use, it shall not be overloaded and bear additional force, otherwise, the valve will be deformed and invalid, resulting in early damage. Next, I will introduce the hazards of valve leakage of diesel generator set.

柴油發(fā)電機(jī)組氣門漏氣會(huì)直接影響發(fā)動(dòng)機(jī)的工作特性和使用的經(jīng)濟(jì)性。因此，維修及使用人員對機(jī)組的氣門漏氣要引起高度的重視。

The valve leakage of diesel generator set will directly affect the working characteristics and economic efficiency of the engine. Therefore, the maintenance and user should pay great attention to the valve leakage of the unit.

柴油發(fā)電機(jī)組氣門漏氣會(huì)造成發(fā)動(dòng)機(jī)氣缸漏氣、油耗增加、燃料在氣缸燃燒不良、排氣冒煙或空氣濾清器竄氣，嚴(yán)重時(shí)會(huì)使發(fā)動(dòng)機(jī)起動(dòng)困難，甚至使發(fā)動(dòng)機(jī)工作平衡受破壞，運(yùn)動(dòng)過程常出現(xiàn)異常振動(dòng)。

The valve leakage of the diesel generator set will cause air leakage of the engine cylinder, increase fuel consumption, poor combustion of fuel in the cylinder, exhaust smoke or air filter blow by. In serious cases, it will make it difficult to start the engine, and even damage the working balance of the engine. Abnormal vibration often occurs in the movement process.

柴油發(fā)電機(jī)組氣門漏氣在高溫氣流的沖燒下，氣門頭部和氣門座很快被燒蝕，使機(jī)械強(qiáng)度下降，進(jìn)而磨損、變形，使漏氣更加嚴(yán)重和積炭增多，造成惡性循環(huán)。

Under the impact of the high-temperature air flow, the valve head and valve seat of the diesel generator set will be quickly ablated, which will reduce the mechanical strength, and then wear and deform, making the leakage more serious and the carbon deposition more, resulting in a vicious cycle.

如果是排氣門漏氣，又遇上排氣管積炭堵塞排氣不暢、氣門導(dǎo)桿和導(dǎo)管間隙過大時(shí)，會(huì)有一部分高溫廢氣沿著氣門導(dǎo)桿和氣門導(dǎo)管的間隙沖刷潤滑油后進(jìn)入氣門室，污染氣門室，使氣門室搖臂部件潤滑不良，溫度升高，粘附積炭，加速柴油發(fā)電機(jī)組配氣機(jī)構(gòu)的磨損和損壞。

If the exhaust valve leaks, and the exhaust pipe is blocked by carbon deposition, the exhaust is not smooth, and the clearance between the valve guide rod and the guide tube is too large, some high-temperature exhaust gas will wash the lubricating oil along the clearance between the valve guide rod and the valve guide tube and enter the valve chamber, polluting the valve chamber, causing poor lubrication of the rocker arm parts of the valve chamber, increasing the temperature, adhering to carbon deposition, and accelerating the wear and damage of the valve mechanism of the diesel generator set.

如果是進(jìn)氣門漏氣，漏氣的氣缸在壓縮過程中，壓縮溫度不能使正時(shí)噴入的油自然發(fā)火，而部分可燃混合氣通過進(jìn)氣門漏氣縫隙處回流吸氣口、進(jìn)氣管，隨后又在下一循環(huán)的進(jìn)氣行程重新吸入氣缸，當(dāng)工作行程氣缸內(nèi)又噴入常量燃油時(shí)，這些聚積的燃油和可燃混合氣會(huì)發(fā)生燃燒，使發(fā)動(dòng)機(jī)工作粗暴，發(fā)出敲擊聲。

In case of air leakage from the intake valve, the compression temperature of the cylinder with air leakage cannot cause the oil injected at the timing to ignite naturally during the compression process, while part of the combustible mixture flows back to the intake port and intake pipe through the air leakage gap of the intake valve, and then is re sucked into the cylinder during the intake stroke of the next cycle. When constant fuel is injected into the cylinder during the working stroke, these accumulated fuel and combustible mixture will burn, causing the engine to work rough, Knock.

若是多缸發(fā)動(dòng)機(jī)，當(dāng)某，個(gè)缸的進(jìn)氣門漏氣后，倒流入進(jìn)氣管的可燃混合氣或廢氣將被吸入其他缸，使其他缸的工作也受到影響。

In the case of a multi cylinder engine, when the intake valve of a certain cylinder leaks, the fuel mixture or exhaust gas flowing back into the intake pipe will be sucked into other cylinders, and the work of other cylinders will also be affected.

柴油發(fā)電機(jī)組氣門出現(xiàn)漏氣故障后，如不及時(shí)的對柴油發(fā)電機(jī)組維修重新研磨氣門，恢復(fù)其密封性，在短時(shí)間內(nèi)將發(fā)展為氣門座、氣門頭錐面、氣門桿根部的燒蝕，導(dǎo)致不能修復(fù)需要更換新件和存在氣門折斷掉入氣缸內(nèi)的危險(xiǎn)以及機(jī)件損壞的隱患。

In case of air leakage of the diesel generator set valve, if the diesel generator set is not repaired and reground in time to restore its sealing property, it will develop into the ablation of the valve seat, valve head cone and valve stem root in a short time, resulting in the failure to repair and replacement of new parts, the risk that the valve will break and fall into the cylinder, and the hidden danger of mechanical damage.

以上就是為大家介紹的有關(guān)燃?xì)獍l(fā)電機(jī)組配件的詳細(xì)的介紹,希望對您有所幫助.如果您有什么疑問的話,歡迎聯(lián)系我們.我們將以專業(yè)的態(tài)度,為您提供服務(wù)http://dgtmcnc.com

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