difference between sulzer and man b&w engines

difference between sulzer and man b&w engines

MAN B&W engine

  1. Lubrication of Crops Head is done by a telescopic pipe at 4 bar.
  2. Cylinder lubrication method is Alpha lubrication ( in 4-5 revolution only once )
  3. Individual fuel injection system
  4. Camshaft in B&w engine is driven by the chain drive with the 2-chains.
  5. Jerk type fuel pipe
  6. In this type of engines, bore cooked liner is used.
  7. Main Bearing is made up of tri-metal bearings with high load carrying capacity.
  8. Top piston rings is of CPR type.
  9. OROS type piston for better combustion area and reduction in piston temperature
  10. Mip :- Indicated mean pressure
  11. MIP can be found with the help of card diagrams.
  12. Bearing surface area of crosshead is larger.
  13. Grooves are provided with a machined channel to keep lubricating oil in the place.
  14. The same main lube oil system pump supplies the lube oil.
  15. The oil pressure is kept at 2-4 bar, which is the system pressure.
  16. Lube oil is delivered to the crosshead via a telescopic pipe connected to the guide.

Sulzer engines

  1. Lubrication of Crooshead is done by internal pipe through piston rod at pressure of 12 bar
  2. Cylinder lubrication is pulse lubrication
  3. Commin rail injection system
  4. Camshaft is driven by gear driven with timing gear
  5. Valve type fuel pipe
  6. Fine honed and bore cooked liner with large insulation.
  7. white metal bearing
  8. Top piston rings is chromium coating piston rings
  9. Convex shape piston with jet shaker cooling
  10. Mep :-Mean effective pressure
  11. This can be found on the shaft after all one loss ( i.e friction )
  12. Bearing surface area of crosshead is smaller
  13. Surface Bearing shell of sulzer engine is smooth.
  14. A separate crosshead pump supplies the lube oil.
  15. The lube oil pressure is kept between 12 to 16 bar.
  16. Lube oil is delivered to the crosshead via a swinging or articulated pipe.

Sources

Sulzer

B & W

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