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Intercooler refers to a heat exchanger that cools the air that has been heated during compression. This application is in Turbo - or Supercharged applications.

  • Air gets hot when it is compressed. This causes the air to expand and become less dense. Heated air contains less oxygen to support combustion. To cool the air and increase its density, most turbocharged and supercharged engines have a charge air or intercooler.
  • This is a radiator-like heat exchanger that cools the air after it has been pressurized. Then air enters the engine cool and can take higher compression without detonation. 
  • It transfers heat from hot air to cool air. The hot compresses air flows through fins that surround these passages. Some heat from the compressed air transfers to the cooler outside air.