Fuel injection nozzle

摘要

PCT No. PCT/AU86/00201 Sec. 371 Date Mar. 11, 1987 Sec. 102(e) Date Mar. 11, 1987 PCT Filed Jul. 18, 1986 PCT Pub. No. WO87/00584 PCT Pub. Date Jan. 29, 1987.A nozzle for the injection of liquid fuel by compressed gas which produces a generally circular first array of gas-entrained fuel droplets and a second array of gas-entrained fuel droplets within the first array. The preferred nozzle has an outwardly opening poppet valve with notches (65) on the perimetal edge of the valve head (48). The division of the fuel-gas charge into two arrays reduces penetration of the charge into the combustion chamber with beneficial effect on combustion efficiency and exhaust emissions. Also disclosed is an arrangement in which an un-notched poppet valve co-operates with a notched valve port to similarly obtain division of the fuel-gas charge into two arrays.