如今瓦斯发电机组的应用领域越来越多，重要性也有所提高。我们都知道喷油嘴是瓦斯发电机的主要设备之一，在使用一段时间后，有时会出现烧熔故障。下面简单分析一下瓦斯发电机喷油嘴烧熔的原因，以帮助大家快速解决问题，保证瓦斯发电机的正常运行。

Nowadays, the application of gas generator sets is more and more important. We all know that the fuel nozzle is one of the main equipment of the gas generator. After a period of use, sometimes there will be a burning failure. The following is a brief analysis of the reasons for the burning of the fuel nozzle of the gas generator to help you quickly solve the problem and ensure the normal operation of the gas generator.

瓦斯发电机喷油嘴烧熔的原因

Reasons for fuel nozzle burning of gas generator

1、长时间怠速运转

1. Long idle running

在瓦斯机长时间怠速运转时，由于汽缸内温度低，燃料燃烧不充分，燃烧室和喷油嘴上容易形成积碳，至使喷油嘴工作条件恶化。尤其在冬季寒冷的气候条件下更为严重。由于燃烧室有积碳，使得散热缓慢，严重时会造成喷油嘴的喷孔阻塞或出现滴油现象。燃油长时间停留在喷油嘴头部燃烧，产生的局部高温将使喷油嘴和隔热护套烧熔。

When the gas engine is idling for a long time, due to the low temperature in the cylinder and insufficient fuel combustion, carbon deposits are easy to form on the combustion chamber and the fuel injector, which worsens the working conditions of the fuel injector. Especially in cold weather conditions in winter. Due to the carbon deposition in the combustion chamber, the heat dissipation is slow, and in serious cases, the nozzle hole of the fuel injection nozzle will be blocked or oil dripping will occur. The fuel will stay at the nozzle head for a long time and burn, resulting in local high temperature that will cause the nozzle and thermal insulation sheath to melt.

2、喷油时间过晚

2. Injection time is too late

喷油提前角过小将使喷油时间过晚，燃料燃烧情况出现恶化，如果长时间得不到调整，局部高温将会使喷油嘴和隔热护套烧熔。

If the fuel injection advance angle is too small, the fuel injection time will be too late, and the fuel combustion situation will deteriorate. If it is not adjusted for a long time, the local high temperature will cause the fuel injection nozzle and thermal insulation sheath to burn.

3、燃油不清洁

3. The fuel is not clean

燃油中的有小颗粒杂质，会使喷油嘴处的针阀和针阀体磨损，严重时针阀卡在针阀体内。针阀卡滞后，燃油不能定时、定量、迅速地喷入燃烧室，会出现滴油或射油现象。致使燃油雾化不好，燃烧速度降低，喷油嘴处燃烧时间延长，终导致喷油嘴和隔热护套烧熔。发生这类故障的同时，会出现瓦斯机排黑烟和抖动现象。

Small particle impurities in the fuel will wear the needle valve and needle valve body at the fuel injection nozzle, and the clockwise valve will be stuck in the needle valve body seriously. The needle valve is stuck, and the fuel cannot be injected into the combustion chamber in a timely, quantitative and rapid manner, resulting in oil dripping or injection. As a result, the fuel atomization is not good, the combustion speed is reduced, the combustion time at the fuel injector is prolonged, and finally the fuel injector and thermal insulation sheath are burnt. When such failures occur, the gas machine will emit black smoke and shake.

4、装配不当

4. Improper assembly

如果喷油嘴隔热护套时未清洗干净就安装，喷油嘴头和隔热护套有间隙，使燃气进入间隙内，造成隔热和散热效果降低，喷油嘴和隔热护套烧熔。若隔热护套安装过紧，喷油嘴将产生附加应力，在热交变负荷和燃油喷射高压负荷的共同作用下，会使喷油嘴头部断裂，针阀卡滞而滴油。除此之外，如果维修时漏装隔热护套，喷油嘴伸入燃烧室超过汽缸盖底下4mm以上，也会使喷油嘴吸收的热量增加，使喷油嘴烧熔。

If the thermal insulation jacket of the fuel injector is not cleaned before installation, there is a gap between the fuel injector head and the thermal insulation jacket, so that the gas enters the gap, resulting in reduced thermal insulation and heat dissipation effect, and the fuel injector and the thermal insulation jacket are fused. If the thermal insulation sheath is installed too tightly, the fuel injector will generate additional stress. Under the combined action of thermal alternating load and fuel injection high-pressure load, the fuel injector head will break, the needle valve will be stuck and drip oil. In addition, if the thermal insulation jacket is not installed during maintenance, and the fuel injector extends into the combustion chamber more than 4mm below the cylinder head, the heat absorbed by the fuel injector will also increase and the fuel injector will burn.

如果瓦斯发电机在运行中缺少冷却液，燃烧室因得不到很好的冷却而造成高温，也是喷油嘴烧熔的重要原因。以上就是瓦斯发电机喷油嘴容易烧熔的几点原因分析，希望对顾客朋友们有所帮助。更多使用事项就来我们网站//www.gz-yanye.com进行咨询吧！

If the gas generator is short of coolant during operation, the combustion chamber will not be well cooled and cause high temperature, which is also an important reason for fuel nozzle melting. The above are the reasons why the fuel nozzle of gas generator is easy to burn and melt. I hope it can help customers and friends. Come to our website for more usage matters //www.gz-yanye.com Consult!