Patent ID: 6145496
Filing Date: 2000-11-14
Classification: F02M

Abstract:
A fuel injector for an internal combustion engine, comprising:an injector body having a seat, an orifice through said seat and an injector needle reciprocable along an axis between a first position having a tip thereof spaced from the valve seat defining a passage for flowing fuel between said needle and said seat and through said orifice and a second position with the tip engaging said seat and closing said fuel passage;a shroud defining a chamber downstream of said orifice for receiving the fuel flowing through said orifice and carrying a porous element spaced from said orifice and on an opposite side of said chamber from said orifice for receiving fuel flowing through said orifice and said chamber;an air passage for flowing air under pressure into said chamber for flow through said porous element, thereby atomizing the fuel in said porous element; andan outlet on the side of the porous element opposite the chamber for flowing the atomized fuel from the injector.