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As the housing for the drive mechanism and cooling jacket, the crankcase forms the central component of the engine.
  • The crankcase has a number of functions and tasks, including:
    • - Accommodating the crank drive mechanism
    • Accommodating and connecting the cylinder head(s)
    • As a mounting for the crankshaft and, if applicable, the camshaft
    • Accommodating lubricant and coolant ducts
    • Integrating a crankcase ventilation system
    • Connecting to the gearbox and valve control drive
    • Accommodating various auxiliary components
    • Closing the crankcase to the outside by means of the oil pan.
  • BF crankcases are produced primarily from grey cast iron by sandcasting.