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Problems encountered in the combustion process of the chain saw engine

- May 11, 2018 -

Problems encountered in the combustion process of the chain saw engine
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The chain saw is a kind of garden machine widely used in mechanized cutting operation in our country, and the engine of chain saw is also called internal combustion engine or gasoline engine.
It is the main part of the oil saw, which is used to generate power and drive the sawmill through the transmission mechanism.
Unlike a common engine on a tractor, a saws is a two-stroke engine that is twice as powerful as a four-stroke engine.
In the combustion process, chain saw engines often encounter some problems. Today, we will talk about two problems.

1. After the ignition of the engine, it sometimes explodes, which is an abnormal combustion.

When the engine is deflated, the flame burns at an extremely high speed, reaching between 2000 and 3000 m/s, while the normal flame combustion speed is 20 to 40 m/s.
Therefore, the temperature of the engine increased significantly, and the pressure of the cylinder increased greatly.
The explosive feature is that there is metal tapping in the cylinder, the engine is unstable, overheat, and the power goes down, and the exhaust pipe runs black smoke.
Due to the explosion of the engine, its economy deteriorates, the lubricating oil deteriorates and even loses its lubrication property, which makes the bearing wear more and more.
Therefore, deflagration is not allowed.
The main cause of engine detonation is the poor quality of fuel, or the mismatch between fuel and engine compression.
In addition, it is related to the temperature of the engine itself, the position of the spark plug, the form of the combustion chamber, and the size of the ignition Angle in advance.
Also, carbon deposits can ignite.
After the explosion, the throttle valve should be shut down to determine the cause and eliminate it.

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2. Early ignition

Ignition in advance is not equal to ignition, and the combustible mixture in the cylinder burns itself.
The reason for the early ignition is that the temperature in the cylinder in the compression process has reached the temperature of the fuel's spontaneous combustion, so it does not need to be ignited to ignite itself.
When the ignition occurs in advance, the engine overheats, producing a lot of carbon, and the engine is unbalanced.

By analyzing and understanding the two problems of engine combustion, we can better understand the performance of oil saws.
Only by knowing and mastering the performance of the machine can the work efficiency and quality be improved so as to achieve the goal of saving labor and reducing costs.
Welcome to inquire about our Showbull saws.


Quote from:http://sh.qihoo.com/


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