How Does engine works ?

                              Engine 

1) What is engine? 

An engine or motor  is a machine designed to convert one or more forms of energy into mechanical energy. Available energy sources include potential energy, heat energy, chemical energy, electric potential and nuclear energy. 

2) Fuels 

Petrol , Diesel , kerosene, CNG, Hydrogen Gas, Electricity ,Alcohol etc. are the Fuels required to run the engine. 

 • Petrol and Diesel Engine are commonly       use in car,ship,Train, generates etc.

 • In petrol and Diesel engine there are two      types called 2 Stroke and 4 stroke                engine.

(1)what is 2 stroke engine ?

A two-stroke engine is a type of internal combustion engine that completes a power cycle with two strokes of the piston during one power cycle, this power cycle being completed in one revolution of the crankshaft.

 • where it is use ?

   Dirt bikes.

   Mopeds.

   Jet skis.

   Small outboard motors.

   Radio-controlled model planes.

 *Advantages*

 • For the same dimensions power                   developed is twice to that of four stroke     engines.

• Power required foe exhaust and suction      stroke is saved.

• More uniform turning moment compared    to four stroke engines hence a lighter          flywheel is required.

• Lighter Weight 

 *Disadvantage

• Two-stroke engines don't last nearly as       long as four-stroke engines ...

•  Two-stroke oil is expensive, and you           need about 4 ounces of it per gallon of       gas 

• Two-stroke engines do not use fuel           efficiently, so you would get fewer miles     per gallon.

(2)What is 4 stroke engine?

A four-stroke engine is an internal combustion engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either direction. The four separate strokes are termed: 

1st Stroke = Intake 

Fuel + Air mixtures is drawn in .

2nd  Stroke= Compression 

Air + fuel mixtures is compressed.

3rd stroke= Power 

Explosion forces piston down .

4th stroke= Exhaust 

Piston pushes  out  burned gases .

*Advantages*

• Four stroke engine makes less pollution      as compared to two stroke engine .

• High engine efficiency.

• Low Fuel Consumption

• Oil is not needed in mixtures as Two             strokes engine .

*Disadvantage*

• Low power output 

• Heavy Vibration

• Complex structure 

• It creates higher torque at a lower rpm.

Important Images 

                TWO STROKE ENGINE 

                FOUR STROKE ENGINE 

More blog  about engine are coming soon 

By- Tanishq Deshmukh 

7 April 2023