APERFEICOAMENTOS EM INJECAO DE COMBUSTIVEL

摘要

PCT No. PCT/AU86/00200 Sec. 371 Date Mar. 11, 1987 Sec. 102(e) Date Mar. 11, 1987 PCT Filed Jul. 18, 1986 PCT Pub. No. WO87/00583 PCT Pub. Date Jan. 29, 1987.A fuel injection method and apparatus for in-cylinder injection in an internal combustion engine. Compressed air is used to inject the fuel through an injection nozzle (43) particularly shaped so that different fuel spray patterns are produced at high and low fueling rates. At higher rates of fueling corresponding to higher engine loads the fuel spray pattern is narrower and penetrates further into the cylinder volume whereas at lower rates of fueling corresponding to lower engine loads the fuel spray pattern is wider, less penetrating and relatively more confined. By appropriate selection of nozzle shape the spatial distribution of the fuel spray droplets can be made to vary favorably over a range of engine loads.