Breakdown of a 2-stroke internal combustion
engine.
Photo Link How Stuff Works
2-Stroke Internal Combustion
The engine is actually quite simple when broken down into parts.
1st: The engine must start its rotation, usually a battery is used but there are also kick-starters, pull starters and push starters. The engine must make atleast one revolution then it can self sustain itself, as long as fuel is provided.
2nd: This first rotation is very important and we will examine one rotation of a 2-stroke.
a. Fuel and air is mixed and forced into the cylinder, on top of the piston.
b. The piston uses its momentum from its last rotation to compress the fuel air mixture towards the spark plug.
c. The spark plug ignites the mixture at the precise moment propelling the piston down which turns the crankshaft.
d. This process is repeated at a very fast rate.
e. In a 2-stroke the spark plug fires once every revolution.
The above photo is the breakdown of a simple 2-stroke engine, this
engine is air cooled and has cooling fins on the head. 2-stroke engines
are commonly used in RC-planes, RC-cars, dirt bikes and atv's because
of their large power to weight ratio. A 2-stroke engine is also cheaper
to produce.
2-Stroke Suzuki RM-250
