Effects of physical and chemical properties of diesel fuel on NOx emissions of heavy-duty diesel engines

Nils Olof Nylund, Päivi Aakko, Seppo Mikkonen, Aapo Niemi

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Abstract

In a diesel engine, both physical and chemical properties of the fuel affect exhaust emissions. This study focused on the separation of some physical and chemical effects of the fuel on the NOx emission. The tests were conducted with a bus engine using four diesel fuels with different density and aromatics levels. The measurements were performed using five injection timing settings to screen the effects of changes in actual injection timing. When conventional diesel fuel was replaced by reformulated diesel, NOx was reduced 7-13 %. Changes in the injection timing due to differences in the physical properties accounted only for a minor part (10-25 % relative) of the total reduction of NOx, whereas the greater part of the reduction (75-90 % relative) was due to other reasons, mainly fuel chemical properties.

Original languageEnglish
Article number972997
JournalSAE Technical Paper Series
DOIs
Publication statusPublished - 1 Dec 1997
MoE publication typeA1 Journal article-refereed
EventInternational Fall Fuels and Lubricants Meeting and Exposition - Tulsa, OK, United States
Duration: 13 Oct 199716 Oct 1997

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Diesel fuels
Chemical properties
Diesel engines
Physical properties
Engines

Cite this

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title = "Effects of physical and chemical properties of diesel fuel on NOx emissions of heavy-duty diesel engines",
abstract = "In a diesel engine, both physical and chemical properties of the fuel affect exhaust emissions. This study focused on the separation of some physical and chemical effects of the fuel on the NOx emission. The tests were conducted with a bus engine using four diesel fuels with different density and aromatics levels. The measurements were performed using five injection timing settings to screen the effects of changes in actual injection timing. When conventional diesel fuel was replaced by reformulated diesel, NOx was reduced 7-13 {\%}. Changes in the injection timing due to differences in the physical properties accounted only for a minor part (10-25 {\%} relative) of the total reduction of NOx, whereas the greater part of the reduction (75-90 {\%} relative) was due to other reasons, mainly fuel chemical properties.",
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Effects of physical and chemical properties of diesel fuel on NOx emissions of heavy-duty diesel engines. / Nylund, Nils Olof; Aakko, Päivi; Mikkonen, Seppo; Niemi, Aapo.

In: SAE Technical Paper Series, 01.12.1997.

Research output: Contribution to journalArticleScientificpeer-review

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