Concept of terms connected with Internal Combustion Engine.

Many different terms are used in Internal Combustion Engines,the important terms which are connected with Internal Combustion Engines are covered in
this post.These are follows.

01)Bore:-
The inside Diameter of the Cylinder is known as the Bore and it is measured in milimeter (mm).

02)Stroke:-
It is the distance travelled by the Piston from one of its dead centre position to the other dead centre position.

03)Dead Centre:-
They corrosponds to the positions occupied by the piston at the end of its Stroke,where the centre line of the Connecting Rod and Crank are in the same
straight line.For Vertical Engines these are known as Top Dead Centre (T.D.C) and Bottom Dead Centre (B.D.C) position.In Horizontal Engines,these are
known as Inner Dead Centre (I.D.C) and Outer Dead Centre (O.D.C) position.

04)Top Dead Centre:-
In Vertical Engines,the top most position of the Piston towards the cover end side of the cylinder is known as Top Dead Centre.

05)Bottom Dead Centre:-
In Vertical Engines,the lower position of the Piston towards the Crank end side of the cylinder is known as Botton Dead Centre.

06)Piston Displacement:-
It is also known as "Swept Volume".It is the volume through which the Piston sweeps for its one Stroke.It is equal to the Area of cross section of the Piston
multiplied by its Stroke Lenght.

07)Clearnce Volume:-
It is the Volume included between the Piston and the Cylinder Head when the Piston is at its Top Dead Centre in Vertical Engines and inner Dead Centre in
Horizontal Engines.The Clearance Volume is generally expressed as percentages of Swept Volume.

08)Compression Ratio:-
It is the ratio of the total Cylinder Volume to the Clearnce Volume.For Petrol Engines the value of Compression Ratio is varies from 5:1 To 9:1 and for
Diesel Engines varies from 14:1 To 22:1

09)Piston Speed:-
It is the distance travelled by the Piston in one minute.The piston Speed=2LN meter/min.If the R.P.M. of Engine Shaft=N and lenght of Stroke=L meter.

10)Crank Throw:-
This is the distance between the Centre of CrankShaft and Centre of CrankPin.The distance will be equal to half the Stroke Lengh

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