In some aspects, the diesel engine has more advantages than the gasoline engine, so it is widely used in machinery. In daily use, diesel engine is likely to have some faults, such as white smoke. So how to solve the problem?
Here is the content list:
What is a diesel engine?
Is synthetic oil better for diesel engines？
How to fix white smoke from diesel engines?
What is a diesel engine?
Diesel engine is an engine that burns diesel to obtain energy release. The advantages of diesel engines are high power and good economic performance. The working process of diesel engines is much the same as that of gasoline engine. Each working cycle also experiences four strokes: intake, compression, work and exhaust.
Is synthetic oil better for diesel engines？
Synthetic oil is better.
The oil of diesel engines is divided into three types: ordinary engine oil (mineral engine oil), semi synthetic engine oil and fully synthetic engine oil.
If the oil is changed within the normal maintenance time limit, there is no problem using ordinary oil. Synthetic engine oil is a kind of popular diesel engine oil on the market, and its base oil is not fully synthetic, so it is commonly known as semi synthetic engine oil. The temperature conditions of fully synthetic oil are wider and the service life is longer.
Under the same working environment, the purpose of engine protection can be achieved by using synthetic oil with lower viscosity. Although the price of full synthetic oil is higher, compared with the oil change times, it is not much higher than that of ordinary mineral oil, and the oil change cycle is also longer than that of semi synthetic oil.
How to fix white smoke from diesel engines?
The phenomenon of the fault
The diesel engine is not powered enough, and the running is uneven, and a large amount of white smoke is emitted from the exhaust pipe.
The cause of the faliure
1. The fuel supply time is too late
2. The cylinder temperature is too low or the cylinder compression pressure is insufficient
3. The quality of injector spray is poor.
4. There is water in the diesel, or the cylinder is broken and leaking, which causes the water in the cylinder.
The diagnosis and elimination of the fault
There are two types of the white smoke: gray and water vapor white smoke.
1. First, check the temperature of the diesel engine. If the temperature is too low, check the cooling intensity adjusting device. If the temperature gets normal and white smoke can dissipate, it is a normal phenomenon.
2. If the diesel engine temperature is normal and the exhaust pipe drains steam and smoke, put your hand close to the exhaust port. If there are water drops on the hand, check if there is water in the diesel oil or if the cylinder gasket is burned through, or if the cylinder is broken and leaking and so on.
3. The diesel engine power is insufficient, and the exhaust pipe emits gray smoke. Generally, the fuel supply time is too late, so it should be checked and adjust the fuel supply time.
4. Check the spray quality of the injector. First use the single cylinder oil cut method to find out the bad gas cylinder. Remove the injector and connect it to the original high-pressure oil pipe outside the cylinder. Start the diesel engine and observe spray quality. If the spray quality is poor, check and adjust the injector and replace the injector when necessary.
5. If the engine is white smoke when it is just started and black smoke when the temperature rises, it is usually caused by too low cylinder pressure.
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