Patent ID: 11859586
Assignee: SAUDI ARABIAN OIL COMPANY
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 13:
14. A method comprising:
spraying fuel into a premixing tube of a fuel injector from a fuel chamber of the fuel injector via a fuel channel extending from an inner surface of a conical end of the fuel chamber;
drawing in air into the premixing tube via a port of the fuel injector, the port extending from an inlet formed at an outer surface of a fuel injector tip to the premixing tube, wherein the air enters the inlet of the port from a main chamber of an engine block;
mixing the fuel and the air within the premixing tube to form an air-fuel premixed fuel;
injecting the air-fuel premixed fuel into the main chamber from an orifice of the premixing tube, wherein the orifice provides an outlet of the fuel injector tip;
controlling the spraying fuel into the premixing tube via a needle ball disposed in the fuel chamber; and
stopping a dripping of the fuel by moving the needle ball to contact and seal the conical end of the fuel chamber.