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柴油机燃烧过程中产生白烟要注意哪些?

来源:http://www.huannengpower.com   发布于:2018-05-21

白烟是指排气烟色为白色,它与无色不同,白色是水蒸气的白色,表示排烟中含有水分或含未燃烧的燃油成分。白烟呈液珠状态,和蓝烟相比较直径稍大,一般大于1μm。在光的折射下呈白色,柴油机的白烟是未燃烃(含燃油和润滑油)、水蒸气以及不完全燃烧的中间产物(如含氧碳氢),除水蒸气外,它们也都属于微粒范畴。

White smoke refers to the exhaust smoke color is white, it is different from colorless, white is the white water vapor, indicating that smoke contains moisture or contains unburned fuel composition. White smoke showed a liquid bead state, and the diameter was slightly larger than that of blue smoke, generally larger than 1 m. White in light refraction, the white smoke of diesel engine is the intermediate product of unburned hydrocarbon (including fuel and lubricating oil), water vapor, and incomplete combustion (such as oxygen hydrocarbon). Besides the water vapor, they all belong to the particle category.

柴油机在刚起动时或冷机状态时,排气管冒白烟,是由于柴油机气缸内温度低油气蒸发而形成,冬季尤为明显。柴油机在严冷天气运行时,柴油机温度低,排气管温度也低,有水蒸气排气凝聚成水气形成白色排烟,是正常现象。若当柴油机温度正常,排气管温度也正常时,仍然排出白色烟雾,说明柴油机工作不正常,可判定为柴油机故障。影响其天生的主要因素为:

QQ截图20171025151947.jpg

When the diesel engine starts at a cold start or at a cold state, the white smoke from the exhaust pipe is formed due to the low temperature of the diesel engine cylinder and the evaporation of oil and gas, especially in winter. When the diesel engine runs in severe cold weather, the temperature of the diesel engine is low and the temperature of the exhaust pipe is low. It is a normal phenomenon that the steam exhaust condenses into gas to form white exhaust. If the temperature of the diesel engine is normal and the exhaust pipe temperature is normal, the white smoke will still be discharged, which indicates that the diesel engine is not working properly and can be judged as a diesel engine fault. The main factors that affect their nature are:

6、柴油机刚启动时,个别气缸内不燃烧(特别是冬天),未燃烧的燃油混合气随其它工作缸的废气排出形成水气烟雾。

6. When the diesel engine has just started, there is no combustion in individual cylinders (especially in winter). The unburned fuel mixture is discharged with the exhaust gas from other working cylinders to form water gas smoke.

7、活塞、气缸套等磨损严重引起压缩力不足,造成燃烧不完全。

7, wear of piston and cylinder liner seriously causes insufficient compression force, resulting in incomplete combustion.

8、燃油中有水份和空气。水和空气随着燃油喷射进气缸形成不均匀燃油混合气,燃烧不完全,产生大量的未燃烃排出机外。

8, there is water and air in the fuel. The water and air form an uneven fuel mixture with the fuel injection into the cylinder, and the combustion is incomplete, resulting in a large number of unburned hydrocarbon ejectors.

9、气缸套有裂纹或气缸垫损坏,随着冷却水温度和压力的升高,冷却水进进气缸。排气时形成轻易形成水雾或水蒸气

9, the cylinder liner has cracks or cylinder cushion damage. With the increase of cooling water temperature and pressure, the cooling water enters the cylinder. The formation of water mist or water vapour is easily formed when exhaust

10、供油提前角过小。活塞上行至气缸顶前喷进气缸的燃油过少,形成较稀的可燃混合气,过迟的喷油减少了预混燃料量,预混合量减少。预混合气减少,降低了燃烧速度,燃烧结束较晚,燃烧形成大量的水气烟雾。

10, the oil supply advance angle is too small. When the piston goes up to the top of the cylinder, there is too little fuel injected into the cylinder to form a thinner combustible mixture, and the delayed fuel injection reduces the amount of premixed fuel and reduces the pre mixing amount. The premix decreases, the burning rate decreases, and the combustion is finished later.

更多的关于焦化发电机组保养问题或者详细的内容,请进入我们公司的网站:http://www.huannengpower.com 网站中会有很多的内容仅供参考。

More about the maintenance of the coking unit or the details of the content, please enter our company's website: http://www.huannengpower.com website will have a lot of content for reference only.


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