two-stroke-cycle engine cycle![click to hear](/images/speaker.jpg)
Two-stroke engine: combustion engine whose cycle (intake, compression, combustion and exhaust) requires one up-and-down movement of the piston.
exhaust/scavaging ![click to hear](/images/speaker.jpg)
Second stroke during which the piston is pushed back by the expansion of the burned gases, which are then expelled and replaced by the mixture coming from the crankcase.
combustion ![click to hear](/images/speaker.jpg)
End of the first stroke during which a spark ignites the air/fuel mixture.
intake port ![click to hear](/images/speaker.jpg)
Conduit through which the air/fuel mixture enters the crankcase.
exhaust port ![click to hear](/images/speaker.jpg)
Conduit through which the burned gases are expelled from the combustion chamber.
crankcase ![click to hear](/images/speaker.jpg)
Sealed enclosure where the air/fuel mixture enters and the piston/connecting rod moves.
transfer port ![click to hear](/images/speaker.jpg)
Conduit conducting the air/fuel mixture from the crankcase to the cylinder.
compression/intake ![click to hear](/images/speaker.jpg)
Beginning of the first stroke during which the piston moves up, drawing the air/fuel mixture into the crankcase and compressing the mixture in the cylinder.
spark plug ![click to hear](/images/speaker.jpg)
Electric device whose two electrodes produce the spark necessary to ignite the air/fuel mixture in the cylinder.