| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an oil supply device of a piston for an internal combustion engine, which is capable of supplying an optimal amount of lubricating oil for forming an oil film to a land, while simplifying a structure of the oil supply device. <P>SOLUTION: The oil supply device includes: an oil guide path 30 having an opening 30a at a lower end while extending in the vertical direction at a portion of an air intake side skirt 12a; oil supplying paths 14, 15, one end of which communicates with an upper end of the oil guide path 30, and the other end of which communicates with the land 23; and a lubricating nozzle 32, which is disposed in an inclined state of shifting to the center side of the piston 10 as extending upward such that a nozzle tip may oppose to the opening 30a when the piston 10 is positioned in the vicinity of a bottom dead center, and which can inject the lubricating oil to the opening 30a. At a lower portion from the opening 30a of the oil guide path 30, an oil flow direction conversion part 31 is provided which guides the lubrication oil injected from the lubricating nozzle 32 to the side of the air intake side skirt 12a oppositely to the nozzle tip, when the piston 10 is lifted and moved from the position in the vicinity of the bottom dead center. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
