What is engine – parts of an engine and how they work ?

Engine is such a part of any machine without which it is impossible to run the machine. To say that the engine is the power house of the machine. Engine which plays an important role in today’s modern times but it is very difficult to understand the engine because till now many types of engines have been made and each engine is used for different equipment. So in this article, we will learn about the engine, “what is engine and what are the parts of an engine engine”  and what are the functions of their engine.

 

What is engine ?

The engine is the prime mover that converts the chemical energy of the fuel into mechanical energy. The mechanical energy thus obtained can be used to run the alternator to produce electricity or it can be used to drive an automobile or it can be used for any other useful purpose. The chemical energy of a fuel is obtained from the combustion of the fuel.

 

Types of engine

Internal combustion engine

The engine in which fuel (liquid or gas) is combusted inside the engine cylinder is known as internal combustion engine. For example – Petrol engine, Diesel engine, CNG engine etc. These are also called internal combustion engines.

 

External combustion engine

The engine in which the fuel is combusted outside the engine cylinder is known as external engine. For example – Steam Engine, Steam Turbine, Gas Turbine etc.

 

Also read this – What is gear – spur gear, bevel gear and helical gear

 

Parts of an engine and how they work ?

 

piston

What is piton

The piston sucks and compresses the fuel. Receives power from gases expanding in the cylinder after the fuel is ignited. It also takes out the burnt gases from the cylinder.

 

cylinder block

In the bore of the cylinder, the fuel is compressed by the piston, ignited and expanded to power the piston. There is a cooling system in the walls, which is called cylinder block.

 

cylinder head

cylinder head

Carries inlet and exhaust valves through which fresh fuel is accepted and burnt gases out. Spark plugs (in the case of petrol engines) and injectors (in the case of diesel engines) are also mounted on it.

 

piston rings

piston ring

Compressed fuel leaking from the other side of the piston. One of these rings is used to remove the lubricating oil from the engine cylinder after lubrication, to prevent its mixing with the fuel.

 

connecting rod

connecting rod

The power produced in the piston is transmitted to the crank shaft, meanwhile converting the reciprocating motion of the piston into rotational motion in the crankshaft.

 

crank shaft

crank shaft

Receives oscillating motion from the connecting rod and gives it a rotating motion to the main shaft. The drive cam shaft that activates the valves of the engine is called the crankshaft.

 

camshaft

camshaft

The timing gear or chain is driven from the crankshaft. It operates the inlet and exhaust valves, called camshafts, with the help of cam followers and rocker arms.

 

inlet valve

inlet valve

The inlet valve allows fresh fuel to enter the engine cylinder. Which is made of nickel chromium alloy steel.

 

exhaust valve

exhaust valve

The exhaust valve allows the burnt fuel to drain from the engine cylinder at an appropriate time. Which is made of silicon chromium steel.

 

carburettor

carburettor

Carburettor which is present in petrol engine. Which mixes petrol and air in proper proportion as per the requirement of the engine. Sometimes, it is referred to as the engine kitchen.

 

fuel pump

fuel pump

The fuel pump is located between the carburettor and the oil tank, where the oil from the tank supplies fuel to the carburettor.

 

spark plug

spark plug socket

Spark plugs are found only in petrol engines, which are present at the top of the cylinders. The spark plug generates fire, which burns the fuel.

 

fuel injector

fuel injector

Fuel injectors are found only in diesel engines and are located in the cylinder head, which delivers the proper amount of fuel to the cylinder block.

 

radiator

radiator

It is a heat exchanger, which cools the water flowing in the engine by air flow.

 

turbocharger

turbocharger

It is a centrifugal air compressor, which forces the compressed air to cause combustion in the intake manifold.

 

supercharger

supercharger

It is a device that increases the volumetric efficiency of the engine by harnessing the engine power itself, thereby significantly boosting the engine’s output.

 

coolant

coolant

It is a mixture of half water and half glycol. Glycol which is an antifreeze element, so that the coolant does not freeze in a cold place and at the same time the bowling temperature of the coolant is also high.

 

Conclusion

I hope you enjoyed this article and if you want to know more about the engine, then stay with us and share it with your friends. If you have any suggestion for us, then do share with us.

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