摘要 |
An oil pan structure for a four-cycle engine, in which oil stored in an oil pan is sucked up by an oil pump through an oil strainer and in which oil lubrication is performed by supplying the sucked oil again to each of the parts of the engine to be lubricated. In this oil pan structure, a bottom portion of the oil pan is formed nearly like a bowl by projecting to a side opposite to a crankcase, from an attaching peripheral portion, to which a crankcase lower-part is attached, toward a central portion thereof. An oil pan cover covering a part of the bottom portion is separately provided thereon. Oil passages are formed from the oil pan cover and the bottom portion. An oil introduction opening portion and an oil suction opening portion are formed in the bottom portion.
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