Inertial supercharging effect
Encyclopedia
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
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in the two-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-air mixture into the combustion chamber
, creating a supercharged power delivery effect IE "powerband". This is why the two-stroke engine is preferred by many motorcycling enthusiasts world wide.
Valve timing
In a piston engine, the valve timing is the precise timing of the opening and closing of the valves.In four-stroke cycle engines and some two-stroke cycle engines, the valve timing is controlled by the camshaft. It can be varied by modifying the camshaft, or it can be varied during engine operation...
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Inertial supercharging effect in two-stroke engines
The inertial supercharging effect from two-stroke engines is the result of the design of an expansion chamberExpansion chamber
An expansion chamber is an exhaust system used on a two-stroke cycle engine to enhance its power output by improving its volumetric efficiency. It makes use of the energy left in the burnt exhaust exiting the cylinder to aid the filling of the cylinder for the next cycle...
in the two-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-air mixture into the combustion chamber
Combustion chamber
A combustion chamber is the part of an engine in which fuel is burned.-Internal combustion engine:The hot gases produced by the combustion occupy a far greater volume than the original fuel, thus creating an increase in pressure within the limited volume of the chamber...
, creating a supercharged power delivery effect IE "powerband". This is why the two-stroke engine is preferred by many motorcycling enthusiasts world wide.
See also
- Exhaust pulse pressure chargingExhaust pulse pressure chargingExhaust pulse pressure charging is a system for supercharging two-stroke diesel engines of the loop-scavenge type. Loop-scavenge engines cannot be pressure-charged in the same way as uniflow engines or four-stroke engines because the inlet and exhaust ports are open at the same time.-Overview:The...
- Kadenacy effectKadenacy effectThe Kadenacy effect is an effect of pressure-waves in gases. It is named after Michel Kadenacy who obtained a French patent for an engine utilizing the effect in 1933. There are also European and US patents...
- Pressure wave superchargerPressure wave superchargerA pressure wave supercharger is a type of supercharger technology that harnesses the pressure waves produced by an internal combustion engine exhaust gas pulses to compress the intake air. Its automotive use is not widespread; the most widely used example is the Comprex, developed by Brown Boveri...
- SuperchargerSuperchargerA supercharger is an air compressor used for forced induction of an internal combustion engine.The greater mass flow-rate provides more oxygen to support combustion than would be available in a naturally aspirated engine, which allows more fuel to be burned and more work to be done per cycle,...