Engine is any device that can convert the heat energy of fuel into the mechanical energy. It is a power generating machine which converts potential energy of the fuel into heat energy and then rotary motion. Engines are widely being used in multiple automobile industries.
Basically engines are classified into two types:
(1) External Combustion Engines (EC): In these kinds of engines, fuel takes place outside of the cylinder and engine heat is generated by burning of fuel that can be used in order to convert the water or other low boiling temperature fluid into steam. This high pressure steam can be used for rotating a turbine. It has many benefits like high starting torque, cheaper fuels and also flexibility.
(2) Internal Combustion System (IT): Combustion of fuel takes place inside the engine in these types of engines. It can generate a high temperature and pressure during fuel burns inside the engine cylinder. This high pressure force is exerted on the piston that can be used for rotating the wheels of the vehicle. In these engines, gas and high voltage fuel can be used in automobile industries or generation of electric power etc.
Types of IC Engines: These engines are extreme use in multiple automobile industries so it is also known as automobile engine and can be classified in many manners:
(1) As per number of stroke:
- Two stroke engines: Piston moves one time up and down inside the cylinder in these types of engines and complete one crankshaft revolution at the time of fuel injection. These are high torque in comparison to four stroke engine and generally been used in scooters and pumping sets etc.
- Four stroke engines: In these engines, piston moves two times up and down inside the cylinder and is able in completing two crankshaft revolutions at the time of fuel burn. They contain high average in comparison to two stroke engines and widely being used in bikes and trucks etc.
(2) As per the design of Engine:
- Reciprocating Engines: Pressure force is generated in these kinds of engines by combustion of fuel exerted on the piston. It reciprocates the motion by using of crank shaft so that it can be rotated the wheels of the vehicle. These are being used in automobile.
- Rotary engines: It is equipped with a rotor which frees to rotate and the pressure force is generated by burning the fuel which is exerted on the rotor so that it can be rotated but these engines cannot be used in automobile in present day.
(3) As per the using fuel:
- Diesel engine: They use diesel as their fuel and being used in trucks and buses or cars etc.
- Petrol engines: They use petrol as fuel and can be used in bikes, sport cars etc.
- Gas engines: There is a use of CNG or LPG as the fuel and can be used in some light motor vehicles.
- Electric engines: they are eco friendly engines as they do not use fuel to burn instead of they use electric energy to rotate wheel.