What are Automotive Engines....?

     Automotive Engines :Introduction......

we all know that engines are ultimate reason for movement of Vehicles...Now lets find out how an Engine helps the movement of vehicle.

Basically an engine is a device that converts one form of energy to another.In vehicles the ultimate aim is to move the vehicle to one position to another. so, the engines in cars,Two wheelers convert the chemical energy(fuel) to thermal energy (heat) that in turn is converted to mechanical energy which results in the movement of the vehicle... 

we all know that the mainly vehicle operates in 2 types of Fuel : PETROL& DIESEL. so,there should be two types of engine for these fuels.

• Petrol Engine
• Diesel Engine

let us see them in detail in upcoming blogs... Before that let us know what makes the engine to process the fuel and makes the movement of vehicle possible..

The engines can be classified into two types...

1. Internal Combustion Engine ( IC  Engine)
2. External combustion Engine  (EC Engine)

In Internal combustion Engine, The combustion of fuel ( Process Burning of fuel in presence of Air) happens within the engine and the output of combustion is used to produce Mechanical Energy. 

Petrol Engine, Diesel Engine comes under these categories.

In External combustion Engine, as you could have guessed... the combustion of fuel happens outside the engine..and the heat produced is transferred to 2nd fluid which is the working fluid of the cycle to produce Mechanical energy.

Steam Engine, Steam Turbine comes under this category.

Now let us have a brief  look at IC ENGINE..

Parts of this IC Engine:

1. Engine Cylinder:As the name itself suggests its the cylindrical part of the engine where the working fluid is subjected to various processes in order to extract the energy from it.
2. Piston: This is also a cylindrical part which is fitted into the cylinder where it moves forward and backward and compresses the fluid to extract energy from it and repeats the process till the engine is running.
   
   
   
3. Combustion Chamber:The portion where combustion happens in the cylinder is known as combustion chamber. It is in the top portion of Cylinder.
4. Inlet Manifold: The pipe which connects the intake system to intake valve for the air -fuel mixture to enter the cylinder.
5. Exhaust Manifold: The pipe which connects the exhaust system to exhaust valve for the exhaust to escape from cylinder.
6. Intake valve: Takes the input of air or air fuel mixture to further processing.
7. Exhaust valve: Takes the exhaust from the combusted fuel the exhaust to leave.
8. Cam Shaft: The opening and closing of intake and exhaust valve are controlled by this part.
9. Cams: These are the parts of cam shaft which opens and closes the valve at correct timing.
10. Spark plug: Like how we ignite the Gas stove in our home for the bas to burn, the fuel has to be ignited for it to burn and provide the required energy for the vehicle to run. Usually positioned on cylinder head
11. Fuel Injector: In case of Diesel Engine, the fuel and air is injected together into the engine for that process to happen fuel injector is used
12. Crankshaft:It Facilitates the conversion of reciprocating motion of piston to rotatory motion of the shaft.which helps the movement of piston continuously and effectively 
13. Connecting Rod: It connects the crank shaft to piston.
14. Piston Rings: For the piston to stay intact with the cylinder there are slots and these are occupied by piston rings for holding piston and cylinder together.. 
15.  Flywheel: The  torque( a force which helps in rotation) given to crank shaft can cause fluctuations causing change in angular velocity( change in angular position ) of shaft so inorder to achieve a uniform torque and maintain correct angular velocity, Flywheel is used. It is attached to outside of crank shaft.

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