| 摘要 |
PROBLEM TO BE SOLVED: To provide an oil jetting pump for an internal combustion engine, using oil jet for sufficiently cooling a piston by increasing the flow rate of oil without heightening the capacity of an existing oil pump. SOLUTION: The oil jetting pump for the internal combustion engine sucks oil from a main oil hole of the internal combustion engine having the piston to be cooled by oil jet and forcibly feeds the sucked oil to an oil jetting oil hole. It comprises a counter weight 40 for a crankshaft having an outer periphery face set into a cam shape, a plunger 22 to be reciprocated with a roller at one end for slide contact with the counter weight, and a thermo-waxed slider 24 provided in the plunger for closing a top portion of the plunger to allow the forcible feed of the oil when the oil has a certain temperature or higher. COPYRIGHT: (C)2004,JPO
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