The objective of this work is to study the fundamental knowledge for the disintegrating process and the characteristics of a diesel spray. Break-up length of a high speed jet in a pressurized vessel was measured by an electric resistance method. Spray angle and spray tip penetration were investigated photographically, A laser diffraction method was used for measuring the Sauter mean diameter.The spray tip penetration is first proportional to a time, and after that, it is proportional to a root of the time from a beginning of an injection. The length in this first stage is considered to be equivalent to the break-up length of a fuel jet. The maximum spray angle is observed at a ratio of nozzle length to diameter being about 4. The spray angle decreases with increasing viscosity. The Sauter mean diameter gradually increases as the spray angle decreases.
Disintegrating Process and Spray Characterization of Fuel Jet Injected by a Diesel Nozzle
Sae Technical Papers
SAE International Congress and Exposition ; 1984
1984-02-01
Aufsatz (Konferenz)
Englisch
Disintegrating process and spray characterization of fuel jet injected by a diesel-nozzle
Kraftfahrwesen | 1984
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