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微量排氣閥破損的原因

來源:http://m.serviceforo.com/ 日期:2022-03-09 發(fā)布人:admin
許多人在應(yīng)用微量排氣閥的時(shí)候,都遇見過微量排氣閥出現(xiàn)破損的情況,那么這種情況到底是什么原因?qū)е碌哪兀?
When many people use the micro exhaust valve, they have encountered the damage of the micro exhaust valve. What is the reason for this situation?
1.燃燒不良不僅會(huì)提高排氣溫度,還會(huì)在燃燒室內(nèi)形成積碳。隨著排氣溫度的升高,排氣閥的工作環(huán)境變差。隨著其它條件的增加,排氣門的燃燒損失增大。
1. Poor combustion will not only increase the exhaust temperature, but also form carbon deposition in the combustion chamber. With the increase of exhaust temperature, the working environment of exhaust valve becomes worse. With the increase of other conditions, the combustion loss of exhaust valve increases.
2.燃燒室內(nèi)的一些積碳會(huì)隨廢氣排出,并像上述顆粒一樣粘在排氣門和閥座的密封面上。特別是重油加熱溫度控制不好,粘度過大,噴射到氣缸內(nèi)的燃油難以霧化,高壓油泵活塞磨損,導(dǎo)致燃燒倒退,會(huì)造成排氣門和閥座密封面積碳污染。此外,在燃燒室內(nèi)經(jīng)過各種復(fù)雜的熱處理后,燃油中的雜質(zhì)沉積在排氣閥瓣和閥座密封錐面上的一層玻璃狀硬脆材料中,與硫酸鈉、硫酸鈣、氧化鐵等碳顆?;旌衔镔|(zhì)。
2. Some carbon deposits in the combustion chamber will be discharged with the exhaust gas and stick to the sealing surface of the exhaust valve and valve seat like the above particles. In particular, the heating temperature of heavy oil is not well controlled, the viscosity is too high, the fuel injected into the cylinder is difficult to atomize, and the piston of high-pressure oil pump is worn, resulting in backward combustion, which will cause carbon pollution in the sealing area of exhaust valve and valve seat. In addition, after various complex heat treatments in the combustion chamber, the impurities in the fuel are deposited in a layer of glass hard and brittle materials on the sealing cone of the exhaust valve disc and valve seat, and mixed with carbon particles such as sodium sulfate, calcium sulfate and iron oxide.
3.當(dāng)這層玻璃狀沉積物的沉積厚度過大時(shí),當(dāng)閥門關(guān)閉時(shí),在沖擊力作用下會(huì)出現(xiàn)裂紋。經(jīng)過反復(fù)沖擊,會(huì)發(fā)展成片狀,從而形成高溫燃?xì)馍淞魍ǖ廊紵y。
3. When the deposition thickness of this layer of glassy sediment is too large, cracks will appear under the action of impact force when the valve is closed. After repeated impact, it will develop into flakes, thus forming the combustion valve of high-temperature gas jet channel.
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The above is the detailed introduction of Lianggong valve. I hope it will be helpful to you If you have any questions, please contact us We will provide you with professional service http://m.serviceforo.com

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