classification of Engines

 Internal Combustion Engine Components

 

 

      1.Main parts 

• Stationary Parts 

• Running Parts

  2.Auxiliary Systems

   Stationary Parts PURPOSE: - 

  To Support Running Parts. - To Provide Jackets and Passages for Cooling water and Lubrication oil. - To Support Auxiliaries. 

   Cylinder 

  • A metal casting containing the cylinders and cooling ducts of an engine 

  • All other sub-systems are bolted to the block. 

  • Cast Iron or Aluminum alloys are used to build the blocks

   Cylinder Sleeves or Liners  

  • They are inserts into the cylinder block 

  • They act as cylinder walls for the piston 

  • Sleeves made from Cast iron alloys

  Cylinder Head

   • The cylinder head is the metal part of the engine that encloses and covers the cylinders. 

  • Bolted on to the top of the block, the cylinder head contains combustion chambers, water jackets and valves 

  • The head gasket seals the passages within the head-block connection, and seals the cylinders as well. 

   Crank Case

   • That encloses and covers the bottom of cylinder block. 

  • Contains the lubricant oil and oil lubrication pump. 

  • Contains the oil drain hole for changing engine lube oil. 

   

   Running parts PURPOSE

  To convert the power of combustion in the cylinders to mechanical work 

   

  • • Piston and con-rod 

    • Crank shaft

    •  Flywheel

       Engine Parameters 

       Cylinder bore Mechanical efficiency

       Stroke Thermal efficiency 

       Engine speed S.F.C 

       Displacement A:F ratio

       Compression ratio Indicated power 

       Swept Volume/cylinder Brake power 

       crank radius Mean effective pressure 

       Stroke to Bore (L/D) Ratio ………………