Patent ID: 6578778
Filing Date: 2003-06-17
Classification: F02B,F02M,Y02T,Y10S

Abstract:
A fuel injection valve comprising:a valve seat including a substantially planar nozzle tip portion; a fuel injection port including a generally cylindrical fuel inlet portion, having a diameter D; and a fuel outlet portion having a generally elliptical chamfered portion with a depth h, the fuel injection portion defined in said substantially planar nozzle tip portion, a front fuel spray angle &thgr;a, and a side fuel spray angle &thgr;b, an inlet of the generally elliptical chamfered portion connecting to an outlet of the inlet portion; wherein h=D/4âˆ’2D; â€ƒand wherein a fuel spray angle &thgr; of said fuel outlet portion is defined such that 2&thgr;=&thgr;a+&thgr;b.