How Does
How Does a Blower on a Four Banger Work?
Blowers Compress Air
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Whether the blower is a supercharger or a turbo-charger, the main purpose of a blower is to compress air for injection into the vehicle's combustion chamber. Superchargers and turbos compress air using similar tactics, but a supercharger's compressor is powered by the belts that run other automotive components while a turbo is powered by the exhaust pressure exiting the engine's combustion chamber.
Additional Air Helps Combustion
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Regardless of whether a supercharger or turbo is in use, the compressed air output is fed into the vehicle's combustion chamber where it is mixed with fuel. Since more air is being injected into the combustion chamber, larger injectors can deliver additional fuel to the combustion chamber to power larger, more powerful combustion.
More Power Maximizes the Four Banger
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The simple premise of an automotive (four-stroke) engine is that the engine's piston moves downward, sucking ambient air into the combustion chamber. Fuel injectors pour fuel into the chamber where the air/fuel mixture is ignited by a spark from one of four (on a four-cylinder engine) spark plugs. Because the blower increases the amount of air in the combustion chamber, and the engine's fuel injectors increase fuel to maintain an ideal air/fuel ratio, the resulting combustion creates more power to push the piston back up. Whether the engine is comprised of four, six, eight, or even twelve cylinders, the blower improves engine efficiency to produce more power output and a higher horsepower rating.
eHow Article: How Does a Blower on a Four Banger Work?
