Suzuki Motor Corporation

Osamu Sekimoto

Hideshi Morii

Toshio Hayashi

Yuji Sonoda

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 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 being swelled to a side, which is 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 and are formed from the oil pan cover and the bottom portion. An oil introduction opening portion and an oil suction opening portionare formed in the bottom portion.

Oil pan structure for four-cycle engine

A lubricating structure for engines, wherein an oil feed pump and an oil recovery pump are disposed so as to avoid interference between the oil feed and recovery pumps and a clutch mechanism and an increase in the size of the engine. The clutch mechanismis disposed at a location toward a left end of a crankshaftas an output shaftwhich is rotatably supported between an upper crankcaseand a lower crankcasethat is, disposed on a left side of an engine room. A magnet coveris fixed to right side parts of the two crankcasesA magnet MG is disposed between the two crankcasesand the magnet coverat a location toward a right endof the crankshaftAn oil pump FEP for feeding lubricating oil is disposed between the two crankcasesand the magnet coverand an oil pump SCP for recovering lubricating oil is disposed between the two crankcasesand the magnet cover

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Shizuoka, Japan

Osamu Sekimoto