ENGINES

                  ENGINES

It is the heart portion of a vehicle,in other words driving portion.It’s an assembled form of many other parts like oilsump,cylinder,piston,valves etc.When the engine starts a fly wheel(a wheel of high mass)begin to rotate,it will rotates in high speed crank and it’s connected to the crankshaft which drives the piston,the piston is placed in a cylinder.The other end of crankshaft is joined to timing gear or pulley.This portion controls the valve timing.Then a shaft called camshaft driven by this timing gear,it controls the opening and closing of the inlet and outlet valve.This drive is given by a special part called tappet and push rod.The returning force to the valve is given by a spring.Its the simple working of a  engine,there are many other operations like cooling and lubricating.There is an additional oil sump is used to store the oil and to distribute it.When all these processes works properly then its called an engine.

Parts of an Engine:

1-Fly wheel

2-Crankshaft

3-Timing gear or pulley

4-Cam shaft

5-Tappet & push rod

6-Piston

7-Cylinder

8-Oil sump

9-Cooling system

10-Valve mechanism

Classifications

According to strokes:

                   Fourstroke engine

                   Twostroke engine

According to position of cylinder:

                   Vertical engine

                   Horizontal engine

                   Inclined engine

According to fuel used:

                   Petrol engine

                   Gas engine

                   Diesel engine

According to the combustion take place:

                   Internal combustion engine(IC)

                   External combustion engines(EC)

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