NOZZLE FOR DIESEL Russian patent published in 1995 - IPC

FIELD: engine engineering. SUBSTANCE: nozzle has housing with passages for supplying igniting and main fuel, pocket, additional space made at the base of cutting-off edge of a needle and coupled with the pocket through a ring passage and also with the passage for supplying of main fuel, and spraying openings. Size of the ring passage is defined by a relationship available in the invention description. At starting and free running regimes, the igniting fuel enters the pocket space through the passages. The needle then lifts and igniting fuel is injected through the spraying openings into the combustion chamber. After that, the needle is returned to the initial position. Both fuels are fed at operation regimes with advancing supply of igniting fuel. Main fuel is fed to the additional space through the passages, the needle lifts and main fuel is injected into the combustion chamber. A portion of main fuel is fed from the space to the ring passage. EFFECT: improved design. 2 dwg