Internal combustion engine i.e. single-cylinder four-stroke internal combustion engine, for driving motorcycle, has radially running channel directed in position of crankshaft, where axially running channel of engine is part of channels

摘要

The engine has a bearing (114) e.g. roller bearing, provided between a connecting rod (108) and a crank pin (106). A radially running lubrication oil channel is diagonally downward directed in a top dead center position of a crankshaft (100) relative to piston axle direction about 45 degrees, toward a crank angle. An axially running lubrication oil channel (126) is a part of fluid channels (120, 122, 124, 128, 130) of an aggregate. The radially running channel is centrally arranged between crank arms (116, 118) in crankshaft axis direction.