Multi-orifice nozzle air evacuator assembly for a crankcase breather system of a diesel engine

摘要

A multi-orifice crankcase air evacuator assembly for a diesel engine which provides improved efficiency and effectiveness of crankcase air removal into the exhaust port of the engine. A multi-orifice nozzle preferably has five nozzle orifices arranged in an "X" pattern. The evacuation tube has a tube body defining a central passage and a bell-mouth concentrically disposed at its inlet. The central passage includes an air mixer and an air diffuser. Operatively, compressed air pressurably effuses from the nozzle orifices into the central passage, whereupon a low pressure region is established surrounding the bell-mouth which causes crankcase air to be sucked into the evacuator tube and thereupon be expelled to an exhaust port.