Lubrication system for crankshaft

Details Lubrication system for crankshaft Lubrication system for crankshaft

F - Mech Eng,Light,Heat,Weapons

01

M

F01M 1/06 (2006.01) F01M 11/02 (2006.01)

Patent

CA 2461788

A lubrication system for a crankshaft, which is capable of improving the durability of the crankshaft, is provided. The crankshaft is rotatably mounted in a crankcase and is connected to a piston via a connecting rod. The crankshafts has a journal portion and a crank web integrally provided therewith, wherein a crankpin is provided on the crank web. A lubricating oil-supply path is formed in the crankshaft, and an opening of the lubricating-oil supply path is formed on an end face of the crank web so as to face to an end portion of a bearing. The lubricating oil discharged from the opening is supplied to the bearing through an end portion of the bearing, and the opening for discharging the lubricating oil is not formed on an outside periphery of the crankpin. Therefore, the outside periphery becomes wholly flat.

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