Cited by 58Biodiesel Production and ApplicationsAdvanced Combustion Engine TechnologiesVehicle emissions and performance

Assessment of NOx emissions during transient diesel engine operation with biodiesel blends

Giakoumis, Evangelos G., Rakopoulos, Constantine D., Rakopoulos, Dimitrios C.·2014·Journal of Energy Engineering

Abstract

The target of the present work is to review the literature regarding the effects of biodiesel blends on nitrogen oxide (NOx) emissions during the transient operation of diesel engines (acceleration, load increase, starting, driving cycles). The most important mechanisms are analyzed on the basis of the fundamental aspects of transient conditions and the effects that biodiesel physical and chemical properties have relative to conventional diesel oil; biodiesel feedstock and driving cycle effects are also emphasized. In parallel, a comprehensive statistical analysis is presented regarding the effects of biodiesel blends on NOx emissions for engines running on transient cycles during the last 30 years. For the majority of the reviewed transients, an increasing trend in NOx emissions is established when the biodiesel ratio in the fuel blend increases. Moreover, the biodiesel NOx emission penalty seems to increase for more aggressive cycles and for increasing feedstock unsaturation.

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Crossref · 10.1061/(asce)ey.1943-7897.0000136

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  • The higher oxygen content of ethanol and biodiesel compared with petrol and diesel leads to a more complete combustion and hence a decrease in particulate content and exhaust gas.

    “The main explanation for these reduced emissions within literature is that the higher oxygen content of ethanol and biodiesel, compared with petrol and diesel [73,74], leads to a more complete combustion and hence a decrease in particulate content and exhaust gas [11].”

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Authors
Giakoumis, E. G., Rakopoulos, C. D., & Rakopoulos, D. C.
Affiliations
National Technical University of Athens (GR)
Corresponding author
Giakoumis, Evangelos G.
Venue
Journal of Energy Engineering
Published
2014-09
Volume
140
Issue
3
ISSN
  • 0733-9402 (ISSN-L)
  • 1943-7897
OpenAlex
W2076326867
Cited by
58
References
46
Citations by year
2024: 1 · 2023: 3 · 2022: 4 · 2021: 2 · 2020: 3 · 2019: 2 · 2018: 5 · 2017: 6 · 2016: 4 · 2015: 10 · 2014: 11 · 2013: 7
FWCI
5.89
Type
journal article
Language
en
Open access
closed
Locations
Journal of Energy Engineering (publishedVersion)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Biodiesel Production and Applications
  • Physical Sciences › Chemical Engineering › Fluid Flow and Transfer Processes › Advanced Combustion Engine Technologies
  • Physical Sciences › Engineering › Automotive Engineering › Vehicle emissions and performance
Keywords
NOx emissions, biodiesel blends, diesel engines, transient engine operation, driving cycles, biodiesel feedstock, unsaturation, load growth, engine starting, emission penalties

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