| 摘要 |
PURPOSE: An oil discharging device of piston oil gallery is provided to reduce bubbles generated when oil passed through the oil gallery falls on the oil pan so as to improve the cooling and lubrication efficiency of oil. CONSTITUTION: A ring-shaped oil gallery(21) is formed at the center part of a piston(20). An oil inlet and an oil outlet(23) are formed at the bottom of both sides of the oil gallery. A nozzle(30) is formed to the bottom of the oil outlet formed to the oil gallery of the piston to make the discharge direction of oil to face the surface(24) of inner wall of the piston. A hole(32) of small diameter is formed in the body(31) of the nozzle bent at an angle of 90 degrees to make the nozzle connected to the oil outlet with a screw.
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