Accordingly, it transforms the produced power to the gearbox using the crankshaft. It should also be noted that air is allowed to enter and mix with the fuel using the camshaft mechanism. As previously mentioned, the main difference between the engines are either the number of strokes or the cycle that is used to ignite the fuel. The stroke is defined as the length of the path that the piston goes through inside the cylinder. Using the crankshaft mechanism, the linear motion that comes out from the piston due to the combustion is converted into rotational motion.
Rotational motion is the required one to derive the wheels.
From its name, the two-strokes engine refers to a type of an engine in which the process of combustion of a fuel and the liberation of mechanical energy takes place in only two strokes of the piston, the first goes from the top dead center to the bottom dead center, and vice versa for the second stroke. Combustion produces large energy that pushes the piston downward and exhaust gases are formed out of the combustion. Thus, the engine starts its first stroke in which it delivers power using the crankshaft and exhaust gases are liberated out of the cylinder from the exhaust valve. When the piston moves downward more and the cylinder has no more gases, fuel mixture starts to flow to the combustion chamber and the second process of fuel compression starts. It is worth mentioning that the design carefully considers the point that fuel-air mixture should not mix with the exhaust.