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Published byAugust Horn Modified over 9 years ago
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Howstuffworks.com
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More displacement means more power because you can burn more gas during each revolution of the engine This can be accomplished by making cylinders bigger or by adding more cylinders
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Higher compression ratios produce more power, up to a point. The more you compress the air/fuel mixture, however, the more likely it is to spontaneously burst into flame (before the spark plug ignites it). Higher-octane gasolines prevent this sort of early combustion Higher-octane
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more air (and therefore fuel) into a cylinder the same way that you would by increasing the size of the cylinder Turbochargers and superchargers See How Turbochargers Work for detailsHow Turbochargers Work
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Compressing air raises its temperature you would like to have the coolest air possible the hotter the air is, the less it will expand when combustion takes place intercooler is a special radiator through which the compressed air passes to cool it off before it enters the cylinder How Car Cooling Systems Work for details How Car Cooling Systems Work
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Air resistance can be lessened dramatically by putting two intake valves in each cylinder Some newer cars are also using polished intake manifolds to eliminate air resistance there Bigger air filters can also improve air flow.
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Air resistance can be lessened by adding a second exhaust valve to each cylinder If the exhaust pipe is too small or the muffler has a lot of air resistance High-performance exhaust systems use headers, big tail pipes and free-flowing mufflers to eliminate back-pressure in the exhaust system
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Lightweight parts help the engine perform better
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Fuel injection allows very precise metering of fuel to each cylinder improves performance and fuel economy See How Fuel Injection Systems Work for detailsHow Fuel Injection Systems Work
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http://www.youtube.com/watch?v=eUse1VU UEsA http://www.youtube.com/watch?v=eUse1VU UEsA http://www.youtube.com/watch?v=TDRI8lbu ftg http://www.youtube.com/watch?v=TDRI8lbu ftg
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