Swirl-Spray Interactions in a Diesel Engine

2001-01-0996

03/05/2001

Event
SAE 2001 World Congress
Authors Abstract
Content
Swirl in Diesel engines is known to be an important parameter that affects the mixing of the fuel jets, heat release, emissions, and overall engine performance. The changes may be brought about through interactions of the swirling flow field with the spray and through modifications of the flow field. The purpose of this paper is to investigate the interaction of the swirl with sprays in a Diesel engine through a computational study. A multi-dimensional model for flows, sprays, and combustion in engines is employed. Results from computations are reported with varying levels of swirl and initial turbulence in two typical Diesel engine geometries. It is shown that there is an optimal level of swirl for each geometry that results from a balance between increased jet surface area and, hence, mixing rates and utilization of air in the chamber. Results are also reported for several split injection strategies to assess whether the interactions observed with a single injection event are applicable.
Meta TagsDetails
DOI
https://doi.org/10.4271/2001-01-0996
Pages
19
Citation
McCracken, M., and Abraham, J., "Swirl-Spray Interactions in a Diesel Engine," SAE Technical Paper 2001-01-0996, 2001, https://doi.org/10.4271/2001-01-0996.
Additional Details
Publisher
Published
Mar 5, 2001
Product Code
2001-01-0996
Content Type
Technical Paper
Language
English