Measurements of Intake Port Fuel/Air Mixture Preparation

970867

02/24/1997

Event
International Congress & Exposition
Authors Abstract
Content
A detailed investigation of the intake port mixing process was performed on a fired single cylinder port fuel injected research engine. The liquid fuel droplets were studied using several different methods of analysis ranging from spatially and temporally resolved to spatially and temporally averaged data. Comparisons of the port mixture preparation results were made to the combustion performance of the engine in order to develop correlations between the mixing process and resulting engine performance. It is suggested that while the nature of the fuel spray produced by the injector is important, there are several other factors that influence fuel delivery to the cylinder. Calculations are given that indicate drops must be very small to entrain in the flow and avoid wall wetting. Secondary drop formation mechanisms may ultimately determine the nature of the fuel delivery to the cylinder and have an impact on combustion performance. Some evidence supporting the presence of secondary fuel atomization in the intake port was found. This paper demonstrates that it is necessary to develop a more fundamental understanding of secondary fuel droplet formation mechanisms in the intake port to better correlate fuel preparation to combustion performance.
Meta TagsDetails
DOI
https://doi.org/10.4271/970867
Pages
13
Citation
Holthaus, B., Wagner, R., and Drallmeier, J., "Measurements of Intake Port Fuel/Air Mixture Preparation," SAE Technical Paper 970867, 1997, https://doi.org/10.4271/970867.
Additional Details
Publisher
Published
Feb 24, 1997
Product Code
970867
Content Type
Technical Paper
Language
English