THE IMPACT OF DIFFERENT INJECTION SYSTEM PARAMETERS, ON THE GEOMETRICAL FEATURES OF THE DIESEL SPRAY JET

Abstract

Fuel spray geometrical features as: penetration, cone angle, spray elevation angle, of Diesel engines, have significant impact on pollutant emission formation. Therefore, it is necessary to investigate how the fuel spray geometrical features are being developed under the influence of different injection parameters variation. The paper presents some experimental researches and studies in the domain of Diesel internal combustion engines, with emphasis on fuel spray geometrical features. Are presented information concerning fuel spray tip penetration, spray cone angle, spray elevation angle, and how they are influenced by injection pressure, injected quantity and in cylinder back pressure. Researches was done, using the latest testing tools as Moehwald CI 4000, and spray bomb vessel with high speed camera of 15000pps resolution.