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Performance and emissions of diesel-biodiesel-ethanol blends in a light duty compression ignition engine

Shamun, Sam LU ; Belgiorno, Giacomo LU ; Di Blasio, Gabriele ; Beatrice, Carlo ; Tunér, Martin LU and Tunestål, Per LU (2018) In Applied Thermal Engineering 145. p.444-452
Abstract

An approach to reduce CO2 emissions while simultaneously keeping the soot emissions down from compression ignition (CI) engines is to blend in short chained oxygenates into the fuel. In this work, two oxygenated fuel blends consisting of diesel, biodiesel and EtOH in the ratio of 68:17:15 and 58:14:30 has been utilized and studied in a single cylinder light duty (LD) CI engine in terms of efficiency and emissions. The reasons of utilizing biodiesel in the fuel blend is due to the emulsifying properties it has while the origin of the fuel is biomass. When performing the experiments, the control parameters were set as close as possible to the original equipment manufacturer (OEM) EU5 calibration of the multi-cylinder engine to... (More)

An approach to reduce CO2 emissions while simultaneously keeping the soot emissions down from compression ignition (CI) engines is to blend in short chained oxygenates into the fuel. In this work, two oxygenated fuel blends consisting of diesel, biodiesel and EtOH in the ratio of 68:17:15 and 58:14:30 has been utilized and studied in a single cylinder light duty (LD) CI engine in terms of efficiency and emissions. The reasons of utilizing biodiesel in the fuel blend is due to the emulsifying properties it has while the origin of the fuel is biomass. When performing the experiments, the control parameters were set as close as possible to the original equipment manufacturer (OEM) EU5 calibration of the multi-cylinder engine to study the possibility of using such blends in close to stock LD CI engines. The oxygenates, in particular the fuel with the higher concentration of EtOH, showed an net indicated efficiency of ∼52% at high load in comparison to diesel which never exceeded ∼48%. Regarding the emissions, several trends were observed; the soot-NOX trade-off diminished significantly when utilizing the fuel with the highest concentration of EtOH. The charge cooling effect reduces the NOX emissions while the exhaust particles are reduced both in terms of mean diameter and quantity. At lower loads, the THC and CO emissions were higher for the oxygenated blends than for the diesel due to the earlier mentioned charge cooling negatively affecting the combustion process. However, this trend seized at the higher loads when the in-cylinder temperature is higher and oxidation of the fuel is enhanced.

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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Diesel, Efficiency, Emissions, Ethanol, FAME, LD engine
in
Applied Thermal Engineering
volume
145
pages
9 pages
publisher
Elsevier
external identifiers
  • scopus:85053800183
ISSN
1359-4311
DOI
10.1016/j.applthermaleng.2018.09.067
project
Characterization of the Combustion of Light Alcohols in CI Engines: Performance, Combustion Characteristics and Emissions
language
English
LU publication?
yes
id
4aed794b-ae5c-4088-8163-07ef69345a66
date added to LUP
2018-10-08 10:29:43
date last changed
2020-10-07 06:03:53
@article{4aed794b-ae5c-4088-8163-07ef69345a66,
  abstract     = {<p>An approach to reduce CO<sub>2</sub> emissions while simultaneously keeping the soot emissions down from compression ignition (CI) engines is to blend in short chained oxygenates into the fuel. In this work, two oxygenated fuel blends consisting of diesel, biodiesel and EtOH in the ratio of 68:17:15 and 58:14:30 has been utilized and studied in a single cylinder light duty (LD) CI engine in terms of efficiency and emissions. The reasons of utilizing biodiesel in the fuel blend is due to the emulsifying properties it has while the origin of the fuel is biomass. When performing the experiments, the control parameters were set as close as possible to the original equipment manufacturer (OEM) EU5 calibration of the multi-cylinder engine to study the possibility of using such blends in close to stock LD CI engines. The oxygenates, in particular the fuel with the higher concentration of EtOH, showed an net indicated efficiency of ∼52% at high load in comparison to diesel which never exceeded ∼48%. Regarding the emissions, several trends were observed; the soot-NO<sub>X</sub> trade-off diminished significantly when utilizing the fuel with the highest concentration of EtOH. The charge cooling effect reduces the NO<sub>X</sub> emissions while the exhaust particles are reduced both in terms of mean diameter and quantity. At lower loads, the THC and CO emissions were higher for the oxygenated blends than for the diesel due to the earlier mentioned charge cooling negatively affecting the combustion process. However, this trend seized at the higher loads when the in-cylinder temperature is higher and oxidation of the fuel is enhanced.</p>},
  author       = {Shamun, Sam and Belgiorno, Giacomo and Di Blasio, Gabriele and Beatrice, Carlo and Tunér, Martin and Tunestål, Per},
  issn         = {1359-4311},
  language     = {eng},
  month        = {12},
  pages        = {444--452},
  publisher    = {Elsevier},
  series       = {Applied Thermal Engineering},
  title        = {Performance and emissions of diesel-biodiesel-ethanol blends in a light duty compression ignition engine},
  url          = {http://dx.doi.org/10.1016/j.applthermaleng.2018.09.067},
  doi          = {10.1016/j.applthermaleng.2018.09.067},
  volume       = {145},
  year         = {2018},
}