Diesel Exhaust Aerosol Particle Size Distributions - Comparison of Theory and Experiment

780110

02/01/1978

Event
1978 Automotive Engineering Congress and Exposition
Authors Abstract
Content
Particle size distributions have been measured in the exhaust of a single cylinder Onan diesel engine using an electrical aerosol analyzer. These measurements give volume mean diameter for the exhaust particles of about 0.1 μm. Other investigators have shown that the particles found in diesel exhaust consist of agglomerates of very small primary particles (about 0.025 μm diameter) and may contain condensed hydrocarbons.
A mathematical model has been constructed to determine the particle size distributions which will result from the growth of the primary particles by coagulation. The coagulation equation was solved numerically for an expanding stratified system. The model indicates that the inhomogeneity characteristic of stratified combustion can explain the rapid growth of the primary particles into the larger particles observed in diesel exhaust.
Meta TagsDetails
DOI
https://doi.org/10.4271/780110
Pages
7
Citation
Dolan, D., and Kittelson, D., "Diesel Exhaust Aerosol Particle Size Distributions - Comparison of Theory and Experiment," SAE Technical Paper 780110, 1978, https://doi.org/10.4271/780110.
Additional Details
Publisher
Published
Feb 1, 1978
Product Code
780110
Content Type
Technical Paper
Language
English