Internal combustion enggines

An engine is a device which transforms one form of energy into another form.when the products of combustion generated by the combustion of fuel an air within the cylinder  form the working fluid ,it is called an internal combustion(I.C.) engine.

Classification of I.C. Engines

The I.C. engines may be classified on the following basis:

1.Based on number of strokes per cycle:
(a) Two stroke engine 
(b) Four stroke engine

2.Based on fuel used:
(a) Petrol engine
(b) Diesel engine
(c) Gas engine

3. Nature of combustion:
(a) Constant volume combustion-Petrol engine
(b) constant pressure combustion-Diesel engine
(c)Mixed combustion-Dual cycle engine

4.Based on cooling system:
(a) Air cooled
(b) water Cooled
(c)Evaporative cooling

5.Based on lubrication system:
(a) Dry sump
(b) Wet sump
(c) Mist
(d) Pressure

6. Based on engine speed:
(a) Low speed-upto 500 rpm. (Revolution per minute of shaft).
(b) Medium speed 500 to 1000 rpm.
(b)High speed- Above 1000 rpm.

7.Based on number of cylinders:
(a) Single cylinder
(b)Multi cylinder.

8.Based on ignition method:
(a) Spark ignition- Petrol Engine.
(b) Compression ignition-Diesel engine.
(c) Hot spot ignition.

9.Based on fuel supply system:
(a) Solid injection.
(b) multi-point fuel injection (MPFI)

10. Based on governing system:
(a) Quality governing.
(b) Quantity governing.