Effect of pilot fuel properties on engine performance and combustion stability in a tri-fuel engine powered by premixed methane-hydrogen and diesel pilot

Qiang Cheng; Ossi Kaario; Zeeshan Ahmad; Ville Vuorinen; Martti Larmi

doi:10.1016/j.ijhydene.2021.09.053

Effect of pilot fuel properties on engine performance and combustion stability in a tri-fuel engine powered by premixed methane-hydrogen and diesel pilot

Qiang Cheng^*, Ossi Kaario, Zeeshan Ahmad, Ville Vuorinen, Martti Larmi

^*Corresponding author for this work

Department of Energy and Mechanical Engineering

Research output: Contribution to journal › Article › Scientific › peer-review

19 Citations (Scopus)

168 Downloads (Pure)

Abstract

The present work investigates the effect of pilot fuel properties on TF combustion using premixed methane-hydrogen-air (CH₄-H₂-air) mixtures ignited by a small amount of diesel pilot. Especially, we are investigating the effect of the cetane number (CN) and aromatic content (AC) on TF combustion in a single-cylinder compression ignition (CI) engine at varying charge air temperatures (T_air = 25 °C, 40 °C, 55 °C) and H₂ volume fractions (M_H2 = 10%, 20%, 40% and 60%) at lean premixed charge mixture conditions (equivalence ratio φ = 0.5). The novelty and main findings of the work consist of the following features: 1) besides the effect of H2 concentration and charge-air temperature, pilot fuel properties also play a crucial role in TF combustion, even a small amount of diesel pilot could dramatically affect the engine performance and combustion stability, 2) the CN and AC are the key factors affect the ignition delay time (IDT) and indicated thermal efficiency (ITE), 3) the in-cylinder pressure oscillation analysis based on a novel Superlets (SL) approach indicates that pilot fuel properties are important to the combustion states and combustion stability.

Original language	English
Pages (from-to)	37469-37486
Number of pages	18
Journal	International Journal of Hydrogen Energy
Volume	46
Issue number	75
Early online date	24 Sept 2021
DOIs	https://doi.org/10.1016/j.ijhydene.2021.09.053
Publication status	Published - 29 Oct 2021
MoE publication type	A1 Journal article-refereed

Keywords

Aromatic content
Cetane number
Fuel properties
Pilot fuel
Tri-fuel combustion

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ijhydene.2021.09.053Licence: CC BY

ENG_Cheng_et_al_Effect_of_pilot_fuel_properties_International_Journal_of_Hydrogen_EnergyFinal published version, 6.9 MBLicence: CC BY

Cite this

@article{986c214d3d4745dc83171955b96668c7,

title = "Effect of pilot fuel properties on engine performance and combustion stability in a tri-fuel engine powered by premixed methane-hydrogen and diesel pilot",

abstract = "The present work investigates the effect of pilot fuel properties on TF combustion using premixed methane-hydrogen-air (CH4-H2-air) mixtures ignited by a small amount of diesel pilot. Especially, we are investigating the effect of the cetane number (CN) and aromatic content (AC) on TF combustion in a single-cylinder compression ignition (CI) engine at varying charge air temperatures (Tair = 25 °C, 40 °C, 55 °C) and H2 volume fractions (MH2 = 10%, 20%, 40% and 60%) at lean premixed charge mixture conditions (equivalence ratio φ = 0.5). The novelty and main findings of the work consist of the following features: 1) besides the effect of H2 concentration and charge-air temperature, pilot fuel properties also play a crucial role in TF combustion, even a small amount of diesel pilot could dramatically affect the engine performance and combustion stability, 2) the CN and AC are the key factors affect the ignition delay time (IDT) and indicated thermal efficiency (ITE), 3) the in-cylinder pressure oscillation analysis based on a novel Superlets (SL) approach indicates that pilot fuel properties are important to the combustion states and combustion stability.",

keywords = "Aromatic content, Cetane number, Fuel properties, Pilot fuel, Tri-fuel combustion",

author = "Qiang Cheng and Ossi Kaario and Zeeshan Ahmad and Ville Vuorinen and Martti Larmi",

note = "Funding Information: The present study has been financially supported by the Academy of Finland (Grant Nos. 297248 and 318024 ). The authors are thankful to Ranta Olli and Blomstedt Otto for their supports on the engine preparations. The second author has also received a scholarship from Fortum-Neste Foundation and Merenkuluns{\"a}{\"a}tio under application no. 2020050 and 20210073 , respectively. Funding Information: The present study has been financially supported by the Academy of Finland (Grant Nos. 297248 and 318024). The authors are thankful to Ranta Olli and Blomstedt Otto for their supports on the engine preparations. The second author has also received a scholarship from Fortum-Neste Foundation and Merenkuluns??tio under application no. 2020050 and 20210073, respectively. Publisher Copyright: {\textcopyright} 2021 The Author(s)",

year = "2021",

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doi = "10.1016/j.ijhydene.2021.09.053",

language = "English",

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Effect of pilot fuel properties on engine performance and combustion stability in a tri-fuel engine powered by premixed methane-hydrogen and diesel pilot. / Cheng, Qiang ; Kaario, Ossi; Ahmad, Zeeshan et al.
In: International Journal of Hydrogen Energy, Vol. 46, No. 75, 29.10.2021, p. 37469-37486.

Research output: Contribution to journal › Article › Scientific › peer-review

TY - JOUR

T1 - Effect of pilot fuel properties on engine performance and combustion stability in a tri-fuel engine powered by premixed methane-hydrogen and diesel pilot

AU - Cheng, Qiang

AU - Kaario, Ossi

AU - Ahmad, Zeeshan

AU - Vuorinen, Ville

AU - Larmi, Martti

N1 - Funding Information: The present study has been financially supported by the Academy of Finland (Grant Nos. 297248 and 318024 ). The authors are thankful to Ranta Olli and Blomstedt Otto for their supports on the engine preparations. The second author has also received a scholarship from Fortum-Neste Foundation and Merenkulunsäätio under application no. 2020050 and 20210073 , respectively. Funding Information: The present study has been financially supported by the Academy of Finland (Grant Nos. 297248 and 318024). The authors are thankful to Ranta Olli and Blomstedt Otto for their supports on the engine preparations. The second author has also received a scholarship from Fortum-Neste Foundation and Merenkuluns??tio under application no. 2020050 and 20210073, respectively. Publisher Copyright: © 2021 The Author(s)

PY - 2021/10/29

Y1 - 2021/10/29

N2 - The present work investigates the effect of pilot fuel properties on TF combustion using premixed methane-hydrogen-air (CH4-H2-air) mixtures ignited by a small amount of diesel pilot. Especially, we are investigating the effect of the cetane number (CN) and aromatic content (AC) on TF combustion in a single-cylinder compression ignition (CI) engine at varying charge air temperatures (Tair = 25 °C, 40 °C, 55 °C) and H2 volume fractions (MH2 = 10%, 20%, 40% and 60%) at lean premixed charge mixture conditions (equivalence ratio φ = 0.5). The novelty and main findings of the work consist of the following features: 1) besides the effect of H2 concentration and charge-air temperature, pilot fuel properties also play a crucial role in TF combustion, even a small amount of diesel pilot could dramatically affect the engine performance and combustion stability, 2) the CN and AC are the key factors affect the ignition delay time (IDT) and indicated thermal efficiency (ITE), 3) the in-cylinder pressure oscillation analysis based on a novel Superlets (SL) approach indicates that pilot fuel properties are important to the combustion states and combustion stability.

AB - The present work investigates the effect of pilot fuel properties on TF combustion using premixed methane-hydrogen-air (CH4-H2-air) mixtures ignited by a small amount of diesel pilot. Especially, we are investigating the effect of the cetane number (CN) and aromatic content (AC) on TF combustion in a single-cylinder compression ignition (CI) engine at varying charge air temperatures (Tair = 25 °C, 40 °C, 55 °C) and H2 volume fractions (MH2 = 10%, 20%, 40% and 60%) at lean premixed charge mixture conditions (equivalence ratio φ = 0.5). The novelty and main findings of the work consist of the following features: 1) besides the effect of H2 concentration and charge-air temperature, pilot fuel properties also play a crucial role in TF combustion, even a small amount of diesel pilot could dramatically affect the engine performance and combustion stability, 2) the CN and AC are the key factors affect the ignition delay time (IDT) and indicated thermal efficiency (ITE), 3) the in-cylinder pressure oscillation analysis based on a novel Superlets (SL) approach indicates that pilot fuel properties are important to the combustion states and combustion stability.

KW - Aromatic content

KW - Cetane number

KW - Fuel properties

KW - Pilot fuel

KW - Tri-fuel combustion

UR - http://www.scopus.com/inward/record.url?scp=85116670699&partnerID=8YFLogxK

U2 - 10.1016/j.ijhydene.2021.09.053

DO - 10.1016/j.ijhydene.2021.09.053

M3 - Article

AN - SCOPUS:85116670699

SN - 0360-3199

VL - 46

SP - 37469

EP - 37486

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

IS - 75

ER -

Effect of pilot fuel properties on engine performance and combustion stability in a tri-fuel engine powered by premixed methane-hydrogen and diesel pilot

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Tri-Reactivity Ignition: Simulation and Experiments

New insight on the ignition of ultra-lean gas combustion

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Effect of pilot fuel properties on engine performance and combustion stability in a tri-fuel engine powered by premixed methane-hydrogen and diesel pilot

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UN SDGs

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Tri-Reactivity Ignition: Simulation and Experiments

New insight on the ignition of ultra-lean gas combustion

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