Patent ID: 6817545
Filing Date: 2004-11-16
Classification: F02M,Y10S

Abstract:
A fuel injector nozzle assembly comprising:an injector body including a valve seat with a supply passage through which fuel flows generally along a supply axis, said valve seat presenting an upper surface adapted to engage a valve to seal said supply passage; and a nozzle plate mounted onto said valve seat including a plurality of round conical orifice holes therein through which fuel flows; said valve seat further including a first edge protrusion, protruding into the fuel flow for generating a first separation of the fuel flow, thereby creating a plurality of small eddies which are entrained within the fuel flowing adjacent thereto, said first edge protrusion defined by a circumferential lip section of said valve seat defining said supply passage therein; a turbulence cavity defined by said nozzle plate and said valve seat wherein fuel flows into said turbulence cavity through said supply passage and out from said turbulence cavity through said plurality of orifice holes; said nozzle plate further including a second edge protrusion protruding into the fuel flow for generating a second separation of the fuel flow, thereby creating a plurality of small eddies which are entrained within the fuel flowing adjacent thereto, said second edge protrusion defined by a channel within said nozzle plate immediately adjacent said orifice holes.