INTERNAL COMBUSTION ENGINE FUEL INJECTION NOZZLE Russian patent published in 1999 - IPC

FIELD: mechanical engineering; fuel systems of internal combustion engines. SUBSTANCE: proposed nozzle has spray tip needle 2 loaded by locking spring 12, additional adjusting member made in form of hydraulic piston 9 placed in guide housing 8 and acting through spindle 11 onto spray tip needle as and when it exceeds preset value preliminary travel h_p. End of spray tip needle is made in one plane with end of housing of spray tip 1. Values of preliminary travel h_a and additional travel h_a of spray tip needle are defined by relationship of dimensions of nozzle parts. EFFECT: facilitated operation of internal combustion engine, reduced specific fuel consumption, improved manufacturability of nozzle. 2 cl, 3 dwg