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4 strok petrol engine

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4 strok petrol engine

  1. 1. 4 Stroke Petrol Engine
  2. 2. Engine displacement
  3. 3.  The 4 Stroke engine cycle consist of these: 1) Intake 180degree 2) Compression 180 degree 3) Power/ Combustion 180 degree 4) Exhaust 180 degree  Total engine revolution 720 degree
  4. 4. The Intake Stroke consist of the piston travelling down. Intake valves are open to allow Air/Fuel mixture to come into the combustion chamber. Intake
  5. 5. It is an electrical device that fits into the cylinder head and ignites air fuel mixtures. Spark plugs
  6. 6. Inlet valve open Piston down INTAKE STROKE
  7. 7. Inlet valve open Piston down INTAKE STROKE Fuel in
  8. 8. Compression stroke consist of the piston travelling back up. Both intake and exhaust valves are closed Air fuel mixture is now being compressed Compression
  9. 9. COMPRESSION STROKE Piston up
  10. 10. Inlet valve closed COMPRESSION STROKE Piston up
  11. 11. The piston is now at the TDC Spark plug ignites, creating a spark that ignites the compressed air fuel mixture. Explosion is created and the piston is forced back down. Hence the Power stroke Both valves are still closed
  12. 12. Inlet valve closed Exhaust valve closed
  13. 13. Inlet valve closed
  14. 14. Exhaust stroke the piston is travelling up Exhaust valve is open Intake valve is Closed Exhaust gases being pushed out by piston Exhaust
  15. 15. Inlet valve closed Exhaust valve open Piston up Exhaust gases out
  16. 16. Inlet valve open INTAKE STROKE Exhaust valve closed
  17. 17. Basic Components of Four-Stroke Engines Intake Valve Valve Cover Intake Port Head Coolant Engine Block Oil Pan Oil Sump Crankshaft Camshaft Exhaust Valve Spark Plug Exhaust Port Piston Connecting Rod Rod Bearings

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