Effect of Oxygen Enrichment on the Performance and Emissions of I.D.I. Diesel Engines

830245

02/01/1983

Event
SAE International Congress and Exposition
Authors Abstract
Content
The purpose of this study was to determine the effect of the partial pressure of O2 in the intake charge of an I.D.I. diesel engine on the various operating parameters and the exhaust emissions. The oxygen content in the intake was varied between 21% and 40% by volume. Engine performance and emissions were evaluated at constant engine speed and injection timing while fueling was varied. The research revealed that enriching the intake air with oxygen led to a large decrease in ignition delay and reduced combustion noise. The fuel economy, the power output and the exhaust temperature remained almost constant. HC and CO emissions decreased and smoke levels dropped substantially, while NOX emissions increased pro-rata with the O2 added.
Theoretical analysis using the Zel’dovich kinetics showed that nitric oxide emissions are sensitive to “mean NO-formation temperature” and the combustion duration associated with this temperature, and, to a lesser extent, the atomic oxygen concentration. The theoretical analysis revealed close correlation between calculated and measured NO emissions.
Meta TagsDetails
DOI
https://doi.org/10.4271/830245
Pages
16
Citation
Ghojel, J., Hilliard, J., and Levendis, J., "Effect of Oxygen Enrichment on the Performance and Emissions of I.D.I. Diesel Engines," SAE Technical Paper 830245, 1983, https://doi.org/10.4271/830245.
Additional Details
Publisher
Published
Feb 1, 1983
Product Code
830245
Content Type
Technical Paper
Language
English