It is known that when the inlet air is cooler, the engine has more power. Consider aspirated, supercharged gasoline engines, and turbocharged diesels whereas supercharging increases the oxygen amount in the cylinder that supports combustion of fuel. It is expected because of atmospheric pressure with cylinder filling.
Airflow makes engines power to be more in several methods. The more air is flown through an engine, the more oxygen will be present for burning fuel. More oxygen implies that more fuel is burnt which means more power.
Nitrous oxide increases the amount percentage of oxygen effectively to have a mixture of air, nitrous oxide, and fuel. It means that more fuel is mixed into the working fluid for combustion heat, to expand the working fluid, and increase pressure in the cylinder.
When the compressed nitrous oxide is stored as a liquid in its pressurized container, it depressurizes and changes from a liquid to gas state. It cools the working fluid and an incredible amount of nitrous oxide is being used and nitrous oxide injection is used at wide open throttle.
The air throttle on a gasoline engine controls the density of the intake charge to enter into the cylinder. Increased density implies that molecules get closer together in the air. It is considered that increased air density in unconfined and confined spaces. There are two things that affect air density in the atmosphere pressure and temperature. When atmospheric pressure increases on a barometer then the density also increases and temperature remains same.
The conclusion is that an engine is normally aspirated or supercharged, gas, diesel, the cooler the intake air, the better. Intercoolers are necessary for every turbo car. The intake charge temperature is important in performance of turbo vehicle and intercooler prevents compressor surge and kills turbo. Intercoolers improve efficiency and power of turbocharged application.
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