Centrifugal Conical-Spray Nozzle

A centrifugal conical-spray nozzle for an internal combustion engine or a turbine-and-turboshaft engine, the centrifugal conical-spray nozzle comprising:

• a needle valve body;
• a plurality of positioning holes provided on the needle valve body;
• a lining having a first transitional cambered surface;
• a needle valve having a first seat surface;
• a throttling guidance cone provided on a head portion of the needle valve, the throttling guidance cone having a second transitional cambered surface;
• a plurality of fuel feed passages;
• a pressure chamber;
• a plurality of tangential holes;
• a spin chamber having a second seat surface;
• a spray hole;
• and
• a spray opening,
• wherein:
• the lining, the needle valve, the plurality of fuel feed passages, the pressure chamber, the plurality of tangential holes, the spin chamber, the spray hole and the spray opening are provided inside the needle valve body,
• the plurality of tangential holes are provided between the pressure chamber and the spin chamber and configured to enable a fuel to spin, and
• the first seat surface of the needle valve mates with the second seat surface of the spin chamber to open and close the spray hole.