The oil jet flexible pipe where the injection hole where

摘要

PROBLEM TO BE SOLVED: To provide piston cooling structure for an internal combustion engine capable of reducing the number of parts items for fixing an oil jet pipe to a crank case and capable of miniaturizing the periphery of an oil jet pipe fixed part.;SOLUTION: This piston cooling structure for the internal combustion engine comprises the oil jet pipe 121 inserted into the crank case 3 and formed with an injection hole 127 for injecting cooling oil toward a piston 16. In the insertion part of the oil jet pipe 121 into the crank case 3, an axial end of the oil jet pipe 121 and the crank case 3 are formed with pin holding parts 129 and 130 communicating with each other, respectively, and the oil jet pipe 121 is fixed to the crank case 3 by fitting a pin 131 in the pin holding parts 129 and 130 of the oil jet pipe 121 and the crank case 3.;COPYRIGHT: (C)2009,JPO&INPIT