1973-02-01

Squish Velocity in the Combustion Chamber of a 2-Stroke Cycle Engine 730186

This paper discusses the effect of squish velocity of 2-cycle engine performance. Four combustion chambers, with different squish velocities, were studied. Squish velocity was changed by varying the combustion chamber to the piston area ratio, leaving all other parameters constant. The study concluded that squish velocity has a major effect on optimum ignition timing and rate of combustion pressure rise, with a lesser effect on power, ignition voltage, and spark duration.

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