A Simple Technique for Predicting Optimum Fuel-Air Mixing Conditions in a Direct Injection Diesel Engine with Swirl 851543
Correlations of simply calculated fuel spray parameters with measured ISFC and smoke trends in a swirling direct injection diesel engine are described. These are based on a large number of results from experiments carried out on a 120.7 mm bore engine in which the induction swirl could be varied.
The correlations indicate that (i) the fuel spray tip velocity at impingement on the chamber wall and (ii) the ‘crosswind’ over the spray at impingement have important influences. Based on these it is deduced that engine speed-related turbulence is a rate-controlling factor in DI diesel combustion.
Citation: Timoney, D., "A Simple Technique for Predicting Optimum Fuel-Air Mixing Conditions in a Direct Injection Diesel Engine with Swirl," SAE Technical Paper 851543, 1985, https://doi.org/10.4271/851543. Download Citation
Author(s):
David J. Timoney
Affiliated:
University College Dublin (Ireland)
Pages: 24
Event:
1985 SAE International Off-Highway and Powerplant Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Diesel / compression ignition engines
Fuel injection
Combustion and combustion processes
Turbulence
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