Patent ID: 9683739
Date: 2017-06-20
CPC Classifications: F01N,F23D

Claim:
1. A fuel injector apparatus, comprising: an injector body having a bore therethrough, the bore defining a fuel manifold; a variable-area injector arrangement having a pintle with a conical head and a pintle spring operatively connected to the injector body in such a manner that the spring urges the conical head to seal against a variable-area exit orifice located at one end of the body to thereby prevent the passage of pressurized fuel through the variable-area exit orifice, and such that application of pressurized fuel within the injector body causes the pintle to move such that the conical head of the pintle is moved out of contact with the variable-area exit orifice of the body as a function of the pressure of the pressurized fuel in the injector body, to thereby provide a corresponding variable area for passage of the pressurized fuel through the variable-area exit orifice about the conical head of the pintle; and a fuel swirler positioned within the manifold and configured to create a swirling action in the flow of pressurized fuel within the fuel manifold, wherein the fuel manifold is upstream of the variable-area exit orifice.