Patent ID: 8083045
Filing Date: 2011-12-27
Classification: F16D

Abstract:
1. An engine with a centrifugal clutch comprising: a) a crankshaft which has at least a pair of journal portions spaced apart from each other in a direction of the crankshaft; b) a crankcase which rotatably supports one of the pair of journal portions of the crankshaft via a bearing metal and rotatably supports the other of the pair of journal portions via a bearing; c) the centrifugal clutch which is mounted at an end of the crankshaft where the bearing is arranged; d) a main oil passage connected to an oil pump which is rotated by the crankshaft; e) first oil supplying means formed in the crankshaft to supply oil to the centrifugal clutch, the first oil supplying means having an oil passage for the first oil supplying means which is communicated with the main oil passage through an oil hole formed in the bearing metal and extends through a fitting portion of a crankpin to the centrifugal clutch; and f) second oil supplying means which supplies oil to the centrifugal clutch, the second oil supplying means having an oil passage for the second oil supplying means which is communicated with the main oil passage and extends in a wall of the crankcase toward where the centrifugal clutch is arranged, and an oil nozzle which is communicated with the oil passage for the second oil supplying means and ejects the oil toward an inner member of the centrifugal clutch and a cylindrical portion of a clutch housing surrounding the inner member.