Briefly intake divided into two forms: naturally aspirated and supercharged intake air, because the engine cylinder by external pressure difference is outside the cylinder intake air to form a combustible natural mixer running, so naturally gas mode also known as “natural inhalation”, may be expressed as “NA intake”, the use of such general sedans intake form.
However, in order to increase the engine power and efficiency, but also invented a new way of intake, i.e., supercharging the intake air, intake air boost is installed simply, “booster fan” in front of the intake port by rotation of the fan forced air intake of the engine is increased, increasing the amount of intake air nozzle is increased according to the carburetor or fuel injection means controls fuel to achieve the effect of increasing the concentration of combustible and combustion of the mixer increase engine power, intake air boost mode current main turbocharged and supercharged.
