Some Basic information on 2-Strokes

 

What is Cylinder Compression?

Cylinder compression is a measure of the amount of air and fuel that is compressed in the combustion chamber of an internal combustion engine. It is an important factor in determining the performance and efficiency of the engine, as well as its ability to start and run properly. A high compression ratio means that more air and fuel can be compressed into the combustion chamber, which can lead to more efficient combustion and more power output from the engine. Conversely, a low compression ratio can result in poor engine performance and difficulty starting the engine.

 

 

What is "Squish"?

Squish is the term used to describe the movement of the air and fuel mixture in the combustion chamber of an engine as the piston moves upward and compresses it. The squish area is the part of the combustion chamber where this movement occurs, and it is typically located near the top of the cylinder head, where the piston comes close to the head but doesn't actually touch it. The squish area is important because it helps to promote efficient combustion by creating turbulence in the air and fuel mixture and increasing the surface area for the spark plug to ignite. A properly designed squish area can also help to reduce emissions and increase the engine's power output.

Why is it called 2-Stroke?

A two-stroke engine has two strokes, or movements of the piston, for every revolution of the crankshaft. The first stroke is the intake stroke, during which the piston moves downward to draw in a mixture of air and fuel. The second stroke is the compression stroke, during which the piston moves upward to compress the air and fuel mixture in the combustion chamber. This is followed by the power stroke, during which the compressed air and fuel mixture is ignited and the resulting explosion drives the piston downward, providing power to the crankshaft. Finally, the exhaust stroke occurs as the piston moves upward again to push the exhaust gases out of the combustion chamber.