This is the main structural part of the engine.Its purpose is to contain and support all the crankshaft components.
TYPE
The crankcase is made of of high mechanical strength cast iron.The crankshaft is supported by six main bearings.The cylinders are formed directly in the crankcase and sorted into three size categories plus one oversize.The crankcase also houses a counter-rotating shaft that is mounted on a central bush and a ball bearing at front and rear.Special channels in the crankcase walls carry coolant and lubrication fluid.The lower part of each cylinder contains an oil jet that sprays lubricating/cooling oil on the piston crown.
