Patent ID: 6974095
Filing Date: 2005-12-13
Classification: F02M

Abstract:
1. A fluid injection nozzle comprising: a valve body providing a valve seat on an inner surface, said inner surface defining a fluid passage whose cross-sectional area decreases toward a downstream side; a valve member for cooperating with said valve seat to open and close said fluid passage; and a plate disposed on a downstream side of said fluid passage, said plate defining a plurality of through holes for injecting fluid, said plate providing a chamber just above said through holes, wherein said chamber is defined by an approximately flat surface of said plate and extends substantially parallel with said plate, and wherein a diameter of said chamber is larger than a downstream end opening of said inner surface of said valve body, and wherein said through holes have inlet openings at an area radially outside a projected area of said downstream end opening in an axial direction, wherein said chamber extends radially outward beyond said through hole by more than a diameter of said through holes, wherein an imaginary line along said inner surface of said valve body directly crosses said plate at a crossing point, and wherein said through holes are radially disposed having a displacement with respect to the crossing point.