Nozzle for Crankshaft with Oil Passages

摘要

A press-fit nozzle 2 controls flow from a conventional round oil hole 3 to a crankshaft rod journal 4 using a shaped cavity 5 close to hut not beyond the cxil 7 of the nozzle. The nozzle 2 directs oil to the rod journal 4 at higher pressure with a narrower axial length 6 than the round oil hole 3. The large cavity 5 before the exit of the nozzle 2 allows higher pressure oil with fast priming. The nozzle distributes a minimum amount of oil with lower axial length 6 leaving a maximum amount of undisturbed rod journal length. It may have a single exit or multiple exits 7 as shown. The nozzle can meter flow to allow downsizing the oil pump when flow through a standard hole exceeds product requirements.