What is a turbocharger and how does a turbocharger works??? Here is another presentation from AutoTech Labs. A turbocharger, or turbo, is a gas compressor, which uses the exhaust gas energy to supply more air to the engine. And that increases the efficiency and power output of the internal combustion engine. The video below takes you to a detailed explanation on how turbocharger component works with the engine! So watch the video and learn something new.