A vertical internal combustion engine

Details A vertical internal combustion engine A vertical internal combustion engine

F - Mech Eng,Light,Heat,Weapons

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F01M 11/00 (2006.01) B63H 20/00 (2006.01) F02B 61/04 (2006.01) F02B 75/06 (2006.01) F16F 15/26 (2006.01)

Patent

CA 2411522

Disclosed is a vertical internal combustion engine having a cylinder block containing a crankshaft directed substantially in a vertical direction and a plurality of cylinders arranged along a vertical plane including the crankshaft, comprising a pair of balancer shafts drivingly connected to the crankshaft, and being pivotally supported in the cylinder block and disposed in parallel with the crankshaft on opposite sides of the cylinders, pivot holes for pivotally supporting each balancer shaft being formed at uppermost and intermediate crankshaft supporting portions of the cylinder block passing through crankshaft supporting portions on the cylinder block, a work hole for working the pivot holes formed in a lowermost crankshaft supporting portion of the cylinder block positioned in axial alignment with a center line of the pivot holes, and a removable plug closing the work hole tightly, wherein the lowermost crankshaft supporting portion is divided into an upper wall and a lower wall between which an oil passage space is interposed, the lower wall extending radially slantingly downward and only the work hole is closed by the plug.

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