Introduction

A turbo is a high precision ‘air pump’, used to supply more air into the engine by harnessing 

on the usually wasted energy in the engine exhaust.

Principles of Turbocharger

The exhaust gases (dark red arrow) drive the turbine wheel and shaft, which is coupled to 

the compressor wheel. When the compressor wheel rotates, fresh air (dark blue arrow) is 

forced-fed at high pressure into the combustion chamber (light blue arrow). With a high 

concentration of oxygen per cubic volume and optimum air-fuel ratio, combustion is now 

cleaner and more complete.