Patent ID: 8316815
Filing Date: 2012-11-27
Classification: F01M,F02B,F02F,F16H

Abstract:
1. An oil storage structure for an engine, said oil storage structure comprising an oil storage chamber; said engine comprising: a crankshaft; a transmission shaft; a crankcase rotatably supporting said crankshaft and said transmission shaft; said crankcase forming at least a transmission chamber, a clutch mechanism comprising a clutch arranged on an end portion of the transmission shaft projecting laterally from the crankcase, and a crankcase cover joined to the crankcase, said crankcase cover configured to help define said oil storage chamber adapted to store oil therein, wherein: the crankcase is vertically split into an upper crankcase and a lower crankcase, and said crankshaft is disposed between the upper and lower crankcases; the crankcase cover is formed with a partition wall therein extending along an outer circumference of the clutch mechanism, as viewed in an direction of the transmission shaft, the partition wall splits a space between the crankcase and the crankcase cover into a plurality of chambers, and of the plurality of chambers, a chamber spaced apart from said clutch mechanism is said oil storage chamber, and an upper edge portion of the partition wall is at least partially disposed along a case-split surface of the crankcase such that the oil storage chamber is defined by said lower crankcase and said crankcase cover.