Introduction

• It is an equipment that generates thermal energy and transforms it into mechanical energy.
• It is of two types:

A) External combustion engine:

• Here, the combustion uses heat in form of steam, which is generated in boiler, place entirely separate from working cylinder.

B) Internal combustion engine:

• The combustion of fuel takes place inside the engine cylinder and heat is generated within the cylinder.
• Power is derived from the fuel burnt within the engine cylinder.
• Linear motion of piston is converted into rotational motion by crank using crank shaft in the fly wheel.