Chain saw is also called gasoline chain saw, its power type is single cylinder two stroke forced air cooling type.
There are three holes in the cylinder of the chain saw, i.e. the air inlet hole, the air outlet hole and the air exchange hole (formed by the scavenging channel and the piston). The three holes are respectively controlled by the piston at a certain time. The working cycle of the chain saw consists of two strokes:
1. First stroke: the piston moves upward from the bottom dead center. After the three air holes are closed at the same time, the mixture entering the cylinder is compressed; when the air inlet hole is exposed, the combustible mixture enters the crankcase. The vent is always closed.
2. Second stroke: when the piston is compressed near the top dead center, the spark plug ignites the combustible mixture, and the gas explodes and expands in the combustion chamber, pushing the piston downward to work. At this time, the air inlet is closed, and the combustible mixture sealed in the crankcase is compressed; when the piston is close to the bottom dead center, the air outlet is opened, and the exhaust gas is flushed out; then the air vent is opened, and the pre-compressed combustible mixture is flushed into the cylinder to drive out the exhaust gas and carry out the air exchange process.
The working principle of the chain saw must be understood, so that we can use and maintain the chain saw better, so as to achieve the purpose of completing daily work efficiently. If you have any other questions to ask, welcome to contact Auston machinery.