Changes in Diesel Particulates with Engine Air/Fuel Ratio
- 1 October 1981
- journal article
- research article
- Published by Taylor & Francis in Combustion Science and Technology
- Vol. 26 (5-6) , 225-231
- https://doi.org/10.1080/00102208108946963
Abstract
Systematic changes have been observed in the character of diesel exhaust particulates as the engine air/fuel ratio is varied. For air/fuel ratios below 20 the particulates are primarily carbonaceous, cluster into chain-like agglomerates and exhibit high specific optical extinction. Increasing the air/fuel ratio leads to increases in the volatile organic content, to less clustering and to lower specific optical extinction. The specific optical extinction decreases from over 10 m2·g−1 at air/fuel ratios below 20 to less than 5 m2·g−1 for air/fuel ratios above 30.Keywords
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