ACCUMULATING NOZZLE Russian patent published in 2002 - IPC

FIELD: mechanical engineering; internal combustion engines; fuel devices. SUBSTANCE: accumulating nozzle of diesel engine consists of nozzle housing, fuel feed channels and under-needle space. Two spaces are made in nozzle housing which accommodate spring-loaded pistons. Outlet of first space is coupled through delivery valve with high-pressure lie, and outlet through channel in body of needle-spool is coupled with inlet of second space. Outlet of second space is coupled with under-needle space through groove on needle-spool. Upper end face of needle-spool is arranged in first space, and spring of second space piston thrust against edge of needle-spool. EFFECT: improved efficiency of fuel devices and engine as a whole owing to optimum usage of energy of fuel accumulated in nozzle for one working cycle. 1 dwg