Turbocharged engine why the engine has a greater than the normal power, one of the reasons is that the efficiency of its ventilation than the normal natural intake of the engine higher. When the air into the turbocharged its temperature will be substantially increased, the density is correspondingly higher, and the intercooler is played the role of cooling air, high temperature air through the intercooler cooling, and then enter the engine. If the lack of intercooler and let the supercharged air directly into the engine, it will be due to air temperature is too high leading to engine damage or even death of fire phenomenon.

Since the temperature of the exhaust gas discharged from the engine is extremely high, the heat transfer through the supercharger increases the temperature of the intake air. Moreover, the air in the process of compression will increase the density, which will inevitably lead to air temperature rise, thus affecting the engine filling efficiency. If you want to further improve the filling efficiency, it is necessary to reduce the intake air temperature. Data show that, under the same air-fuel ratio conditions, the booster air temperature decreased by 10 ℃, the engine power can be increased by 3% to 5%.

    If not by the cooling of the pressurized air into the combustion chamber, in addition to affect the engine's inflatable efficiency, it is also very easy to cause the engine combustion temperature is too high, causing knocking and other failures, and will increase the engine exhaust NOx content, resulting in air Pollution. In order to solve the adverse effects caused by pressurized air heating, so the need to install intercooler to reduce the intake air temperature.