An intercooler is any mechanical device used to cool a compressed fuel coming from turbocharger .It acts like a heat exchanger that removes extra heat from the compressed fuel. Intercooler use in internal combustion engines to improve their volumetric efficiency by increasing intake air charge density through cooling.
Intercoolers increase the efficiency by reducing bringing on air heat created by the turbocharger. This removes the heat of compression (i.e., the temperature rise) that occurs in any gas when its pressure is raised.
A decrease in intake air charge temperature sustains use of a denser intake charge into the engine, as a result of forced induction. The lowering of the intake charge air temperature also eliminates the danger of pre-detonation (knock) of the fuel/air charge prior to time spark ignition.
Turbochargers force more air mass into an
engine's intake manifold and combustion chamber.
Intercooling is a method used to compensate for heating caused by
supercharging. Increased air pressure can result in an excessively hot intake
charge. This Increased charge temperature can also increase the cylinder
combustion temperature, causing detonation, excessive wear, or heat damage to an engine
block.
Passing a compressed and heated intake charge through an intercooler reduces
its temperature (due to heat rejection) and pressure (due to flow restriction
of fins).
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