Patent ID: 7137576

Claim:
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; a nozzle plate mounted onto said valve seat including a plurality of orifice holes therein through which fuel flows, each of said orifice holes including a center line that is skewed relative to said supply axis; 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 valve seat further including a second edge protrusion located upstream of said first edge protrusion and creating a plurality of small eddies; and 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.