Why it need a intercooler?

- May 10, 2018-

The role of the intercooler is to reduce the intake air temperature of the engine. So why reduce the intake air temperature?

(1) The temperature of the exhaust gas emitted by the engine is very high, and the heat conduction through the supercharger increases the temperature of the intake air.

     Moreover, the density of the air will increase during the compression process, and at the same time, the temperature of the air discharged by the supercharger will increase, and the oxygen density will decrease as the air pressure rises, thereby affecting the effective charging efficiency of the engine.

     If you want to further improve the efficiency of the gas, we must reduce the intake temperature.

     The data shows that under the same air-fuel ratio, the engine power can be increased by 3% to 5% for every 10°C decrease in the charge air temperature.


(2) If uncooled charge air enters the combustion chamber, besides affecting the engine's charging efficiency, it can easily cause the engine's combustion temperature to be too high, resulting in knock and other failures.

    It will also increase the NOx content in the engine exhaust and cause air pollution.

    In order to solve the adverse effects caused by the increase in air temperature after pressurization, it is necessary to install an intercooler to reduce the intake air temperature.


(3) Reduce engine fuel consumption.


(4) Improve adaptability to altitude. At high altitudes, the use of medium-cooled compressors with higher pressure ratios allows more power to the engine and improves the vehicle's adaptability.


(5) Improve turbocharger matching and adaptability.