Inertial supercharging effect is the result of incoming fuel/air charge developing momentum greater than intake stroke would generate alone. It is achieved by a combination of head/port configuration, and cam profile/valve timing.
Inertial supercharging effect in two-stroke engines
The Inertial Supercharging effect from 2 Stroke engines is the result of the design of an expansion chamber in the 2 stroke exhaust system. Its spiraled inside design was designed to turbulate the exhaust gas and create a vacuum that rips the exhaust gas out of the engine, bringing engine on to a "powerband" in high load situations. As every action has a reaction, by ripping the exhaust gasses out of the engine combined with the effects of the reeds, you are in turn ripping more fuel and air mixture into the combustion chamber, creating a supercharged power delivery effect IE "powerband". This is why the 2 stroke engine is preferred by many motorcycling enthusiasts world wide.
See also
Sources
- P.W Performance Aust.
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