Effect of Intake-Air Composition on Gas-Phase and Particulate-Bound HC Emissions from Diesel Engines 811196
The effects of changing the intake-O2 mole fraction on the emissions of gaseous and particulate-bound hydrocarbons (HC and volatiles, respectively) have been examined using low- and high-swirl prechamber diesel engines. HC and volatile emissions indices increased with decreasing O2 mole fraction. For most of the test conditions, the effect of intake-air composition on both of these emissions could be explained by variations in the calculated stoichiometric flame temperature, implying that the combustion process in the engines considered was mainly diffusion-controlled. The results also indicated that, at certain operating conditions, a significant fraction of the volatile matter was contributed by sources unrelated to the main combustion event.
Citation: Ahmad, T., Plee, S., and Myers, J., "Effect of Intake-Air Composition on Gas-Phase and Particulate-Bound HC Emissions from Diesel Engines," SAE Technical Paper 811196, 1981, https://doi.org/10.4271/811196. Download Citation
Author(s):
T. Ahmad, S. L. Plee, J. P. Myers
Affiliated:
General Motors Research Laboratories
Pages: 16
Event:
1981 SAE International Fall Fuels and Lubricants Meeting and Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Fuel and Combustion Effects on Particulate Emissions-SP-0502, SAE 1981Transactions-V90-A
Related Topics:
Diesel / compression ignition engines
Combustion and combustion processes
Emissions
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