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

Claim 7:
8. A combustion system comprising:
an engine block with a cylinder;
a piston configured to move up and down inside a main chamber of the cylinder; and
a fuel injector mounted to the engine block and in fluid communication with the main chamber, the fuel injector comprising:
an injector tip of the injector body in fluid communication with the main chamber, wherein the injector tip has a conical outer surface;
one or more nozzle assemblies provided in the injector tip, wherein each of the one or more nozzle assemblies comprises:
a fuel channel in fluid communication with a fuel chamber;
a port opening at an inlet formed along the conical outer surface of the injector tip to be in fluid communication with the main chamber; and
a premixing tube configured to receive fuel from the fuel channel and air from the port, wherein the premixing tube mixes the fuel and the air to form an air-fuel premixed fuel, and wherein the premixing tube comprises an orifice providing an outlet for the injector tip; and

a needle ball movably disposed in the bore, wherein the needle ball has a closed position and an open position, and wherein in the closed position, the needle ball contacts and seals a conical end of the fuel chamber to stop a dripping of a fuel,
wherein the fuel injector injects the air-fuel premixed fuel into the main chamber.