Classification of Engine

Engine can be classified in different types. It usually depends on different factors:

Internal combustion (IC) and External Combustion (EC)
Type of fuel: Petrol, Diesel, Gas, Bio / Alternative Fuels
Number of strokes – Two stroke Petrol, Two-Stroke Diesel, Four Stroke Petrol / Four Stroke Diesel
Type of ignition such as Spark Ignition, Compression Ignition
Number of Cylinders – From 1 to upto 18 cylinders (in a car)
Arrangement of cylinders which are Inline, V, W, Horizontal, Radial
Motion of Pistons which are Reciprocatory, Rotary
Bore-to-Stroke Ratio
Engine cooling methods such as Air-cooled, Liquid-cooled (Water based), Oil-cooled(Oil is cooled separately)
Breathing such as Naturally Aspirated, Turbocharged / Supercharged

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