Operating Principle of Four Stroke Diesel Engine (C.I. Engine) 1” = C

An internal combustion engine where it is the piston that complete all the 4 separate stokes while a crankshaft is turned is known as Four stroke engine or Four cycle. A stroke is referred to as complete traveling of piston along cylinder area in various directions.

There are 4 strokes in this regard:

  • Induction/Intake:

The piston stroke begins at the top center and ends at the bottom center. Valve has to be in the open position and cylinder through its downward motion.

  • Combustion:

It is the ignition and starts off when crankshaft has completed the 360 degree revolution

  • Compression:

The air-fuel mixture is compressed in this format and both intake and exhaust valves are closed.

  • Exhaust:

It is the outlet that is used for expelling air-fuel mixture.

Stage 1 Suction Stroke (Process A-1)

 

Operating Principle of Four Stroke Diesel Engine (C.I. Engine) 2” = C

Stage 2 (Compression Stroke) (Process 1-2)

 

Operating Principle of Four Stroke Diesel Engine (C.I. Engine) 3” = C

Stage 3 Expansion Stroke (Process 3- 4)

 

Operating Principle of Four Stroke Diesel Engine (C.I. Engine) 4” = C

Stage 4 Exhaust Stroke (Process 1-A)

 

Operating Principle of Four Stroke Diesel Engine (C.I. Engine) 5” = C

 

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