| 摘要 |
PURPOSE: A device for lubricating a fuel pump of a GDI engine is provided to secure durability of the fuel pump and a cam shaft through continuous stable lubrication between a pump driving cam and an operating medium. CONSTITUTION: A device for lubricating a fuel pump of a GDI engine comprises oil supply holes(5), an oil flow path(9), a nozzle(15), and a connection control unit. The oil supply holes are punched in a journal of a cam shaft(1) in the radial direction. The oil flow path is formed inside a cam cap(7), which surrounds and secures the journal on a cylinder head, to be connected to the oil supply holes. The nozzle is provided in the cam cap to be connected to the oil flow path and sprays oil toward a contact part between a pump driving cam(11) and an operating medium(13) of the fuel pump, wherein the pump driving cam is provided on the cam shaft and the operating medium is driven with the pump driving cam. The connection control unit is a groove(17) that restricts the connection section between the oil flow path and the oil supply holes during the rotation of the cam shaft.
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