| 摘要 |
PROBLEM TO BE SOLVED: To provide an oil feeder for four-cycle engine having a simple and inexpensive structure, in which a piston, which is freely slidably fit to a cylinder bore made in a cylinder block, is linked through a connecting rod and a crank pin supported freely rotatably to a crankcase, an oil gallery is provided to the crankcase to convey oil delivered from an oil pump placed in the crankcase to the cylinder block, and the oil is ejected in the direction of a crank pin and the piston. SOLUTION: An oil-ejection hole 143 from which oil is ejected to a crank pin 46 and a piston 44 is made in a crank case 39 in direct communication with a midway part of an oil gallery 137. COPYRIGHT: (C)2004,JPO
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