Patent ID: 9677435
Date: 2017-06-13
CPC Classifications: F01M,F02B,F16H

Claim:
1. An oil passage structure for an internal combustion engine, comprising: a cover mounted on a wall surface of an engine body of the internal combustion engine; an oil gallery formed for allowing engine oil to flow therein; the oil gallery comprising a main gallery and a sub gallery; the main gallery being formed in the engine body and comprising an end portion opened on the wall surface of the engine body; the sub gallery being formed between the cover and the wall surface of the engine body, the sub gallery connecting an oil introducing port opened on the wall surface of the engine body with the end portion of the main gallery; a chain system part mounted on the cover; and an oil supply port formed through the cover to supply the engine oil in the sub gallery to the chain system part, wherein the cover is provided with a reservoir portion configured to store the engine oil, thereby forming a structure in which the engine oil in the oil gallery is supplied to the chain system part through the reservoir portion, wherein the reservoir portion is formed by recessing a part of the cover toward a side of the engine body so as to enter the recessed part of the cover into the oil gallery, and wherein the reservoir portion is provided in the recessed part of the cover.