Multiple-hole, piston cooling nozzle and assembly arrangement therefore

摘要

A piston cooling nozzle for an internal combustion engine includes a two-part construction comprising a mounting base and a main body. The mounting base includes a substantially flat end panel which is designed to attach directly to a plateau area on the engine block. The mounting base also includes a plug portion which is designed to seal closed an open end of the main body. The main body includes a through hole which is located in communication with an engine oil rifle. The main body represents a single piece component with an extension arm and cooling nozzle head. The extension arm includes a plurality of drilled passageways which are in communication with four flow jet apertures in the cooling nozzle head. The cooling nozzle head has a generally triangular shape and the four flow jet apertures are arranged so as to track the arc-like curvature of the corresponding piston cooling gallery. Oil flowing through the oil rifle passes through the extension arm and exits from the cooling nozzle head as four narrow and well defined jets of oil. These four jets of oil are targeted at an entrance area for the piston cooling gallery. The configuration of the piston cooling nozzle is such that it may be installed directly into an assembled engine without interference. By dividing a single flow stream into four individual jets, there is a increase in the length to diameter ratio resulting in less stream divergence and a more targeted spray.