Porsche’s New Turbo Design

A turbocharger’s purpose is to force air into the engine, hence the term ‘forced induction’. Inside a turbo are two impellers connected by a shaft, one is known as the ‘hot side’ which takes exhaust gases from the engine in order to rotate. As they’re connected, the compressor side, also known as the cold side, spins as well, drawing in air and compressing it.