The working principle of a logging saw

The working principle of a logging saw is that the interlaced saw teeth on the saw chain strike the wood and cut it.

The chainsaw is powered by a two-stroke, single-cylinder, forced air-cooled gasoline engine and accomplishes various sawing tasks through the high-speed rotation of the chainsaw chain. The piston moves upward from the bottom dead center, and the intake hole, exhaust hole and vent on the cylinder are simultaneously closed, compressing the mixture entering the cylinder. The piston continues to move upward, further compressing the mixture. As the piston moves upward, the intake hole will be exposed, and the combustible mixture will flow into the crankcase through the bottom of the piston at this time. When the piston is compressed near the top dead center, the spark plug just trips, igniting the combustible mixture. The expansion of the gas pushes the piston down to do work