This can cause significant changes to the combustion characteristics of the mixture by changing its composition and temperature, i.e. A non-negligible fraction of the mixture trapped in the cylinder at the conclusion of scavenging is composed of residual gases from the previous cycle. scavenging, remove exhaust gases from the combustion chamber and prepare the fuel-oxidizer mixture that undergoes combustion. Gas exchange processes in two-stroke internal combustion engines, i.e.
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