Hello,

A methanol engine has a crankshaft, connecting rod, piston, and basic engine accessories.

The methanol engine is a two-stroke engine. When working, the combustible mixture enters the cylinder through the intake pipe. When the piston descends, the mixture in the compressor cylinder enters the upper part of the cylinder through the air passage and air port. When the piston rises again, the mixture is strongly compressed in the upper part of the cylinder, the temperature rises, and it ignites and burns. The high-temperature and high-pressure gas expands violently, pushing the piston to do work. Convert thermal energy into mechanical energy. The burned exhaust gas is discharged when the exhaust port is opened; at the same time, the fresh mixture enters the cylinder for a second compression and combustion. Repeat the above process again. After the engine runs continuously, the compression ratio and oil volume can be adjusted to obtain different power and speed.

In my personal research on small methanol engines, the working principle is closest to that of a two-stroke engine.

Two-stroke engine:

First stroke: the piston goes from top dead center to bottom dead center. Complete two actions

1. The spark plug ignites and performs work - exhaust

2. Close the air intake, press the air mixture from the lower part of the piston into the crankcase, and then press the air mixture from the upper part of the piston into the crankcase. Entering the cylinder

The second stroke: the piston goes from bottom dead center to top dead center. Complete two actions

1. Close all intake and exhaust gases and compress the mixture.

2. It takes two strokes of the piston to complete a power cycle, so it is called a two-stroke.

Four-stroke engine: intake-compression-power-exhaust.

Stroke: The piston has one stroke from top dead center to bottom dead center, or the piston makes two strokes when the crankshaft rotates once.