Simulation study of combustion characteristics of diesel-ethanol-palm oil methyl ester blends in diesel engine

Norhidayah Mat Taib, Mohd Radzi Abu Mansor, Wan Mohd Faizal Wan Mahmood, Nik Rosli Abdullah

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Diesel-ethanol-palm methyl ester (PME) blends are believed to be able to improve the combustion characteristics since diesel, ethanol, and PME have different fuel characteristics. This paper is aimed to study the combustion characteristics of pure diesel and diesel-ethanol-PME blends with different compositions through simulation works and to estimate the best fuel composition that can be used in real engine applications. A simulation work was conducted using seven different diesel-ethanol- PME blends for a combustion based on a compression ignition Yanmar TF90 engine parameter by using a CONVERGE CFD software. Seven diesel-ethanol-PME blends (10 vol% to 40 vol%) PME were mixed in ethanol together with 50 vol% diesel fuel operated at 1600 RPM. High PME percentage increased the heat release rate (HRR). However, due to non-uniform chemical energy release from the reaction, the blends of 25 vol% PME with 25 vol% ethanol blends released the highest HRR. A high percentage of ethanol reduced the temperature and increased the heat release. From the cumulative heat release, ignition delay occurred for blends that had more than 15 vol% ethanol. In conclusion, blending ethanol and PME in diesel increased the combustion heat release rate to have better engine efficiency. However, the blend that contained more than 35 vol% ethanol was not suitable to be used in direct injection compressed ignition engine without any modification since the temperature and HRR of the blends is very low.

Original languageEnglish
Pages (from-to)149-156
Number of pages8
JournalJournal of Advanced Research in Fluid Mechanics and Thermal Sciences
Volume44
Issue number1
Publication statusPublished - 1 Apr 2018

Fingerprint

Palm oil
Diesel engines
Esters
Ethanol
Engines
Ignition
palm oil
Direct injection
Diesel fuels
Chemical analysis
Hot Temperature
Computational fluid dynamics

Keywords

  • Combustion Characteristics
  • Heat Release Rate
  • Ignition
  • Palm oil Methyl Ester

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes

Cite this

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title = "Simulation study of combustion characteristics of diesel-ethanol-palm oil methyl ester blends in diesel engine",
abstract = "Diesel-ethanol-palm methyl ester (PME) blends are believed to be able to improve the combustion characteristics since diesel, ethanol, and PME have different fuel characteristics. This paper is aimed to study the combustion characteristics of pure diesel and diesel-ethanol-PME blends with different compositions through simulation works and to estimate the best fuel composition that can be used in real engine applications. A simulation work was conducted using seven different diesel-ethanol- PME blends for a combustion based on a compression ignition Yanmar TF90 engine parameter by using a CONVERGE CFD software. Seven diesel-ethanol-PME blends (10 vol{\%} to 40 vol{\%}) PME were mixed in ethanol together with 50 vol{\%} diesel fuel operated at 1600 RPM. High PME percentage increased the heat release rate (HRR). However, due to non-uniform chemical energy release from the reaction, the blends of 25 vol{\%} PME with 25 vol{\%} ethanol blends released the highest HRR. A high percentage of ethanol reduced the temperature and increased the heat release. From the cumulative heat release, ignition delay occurred for blends that had more than 15 vol{\%} ethanol. In conclusion, blending ethanol and PME in diesel increased the combustion heat release rate to have better engine efficiency. However, the blend that contained more than 35 vol{\%} ethanol was not suitable to be used in direct injection compressed ignition engine without any modification since the temperature and HRR of the blends is very low.",
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AU - Abu Mansor, Mohd Radzi

AU - Wan Mahmood, Wan Mohd Faizal

AU - Abdullah, Nik Rosli

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N2 - Diesel-ethanol-palm methyl ester (PME) blends are believed to be able to improve the combustion characteristics since diesel, ethanol, and PME have different fuel characteristics. This paper is aimed to study the combustion characteristics of pure diesel and diesel-ethanol-PME blends with different compositions through simulation works and to estimate the best fuel composition that can be used in real engine applications. A simulation work was conducted using seven different diesel-ethanol- PME blends for a combustion based on a compression ignition Yanmar TF90 engine parameter by using a CONVERGE CFD software. Seven diesel-ethanol-PME blends (10 vol% to 40 vol%) PME were mixed in ethanol together with 50 vol% diesel fuel operated at 1600 RPM. High PME percentage increased the heat release rate (HRR). However, due to non-uniform chemical energy release from the reaction, the blends of 25 vol% PME with 25 vol% ethanol blends released the highest HRR. A high percentage of ethanol reduced the temperature and increased the heat release. From the cumulative heat release, ignition delay occurred for blends that had more than 15 vol% ethanol. In conclusion, blending ethanol and PME in diesel increased the combustion heat release rate to have better engine efficiency. However, the blend that contained more than 35 vol% ethanol was not suitable to be used in direct injection compressed ignition engine without any modification since the temperature and HRR of the blends is very low.

AB - Diesel-ethanol-palm methyl ester (PME) blends are believed to be able to improve the combustion characteristics since diesel, ethanol, and PME have different fuel characteristics. This paper is aimed to study the combustion characteristics of pure diesel and diesel-ethanol-PME blends with different compositions through simulation works and to estimate the best fuel composition that can be used in real engine applications. A simulation work was conducted using seven different diesel-ethanol- PME blends for a combustion based on a compression ignition Yanmar TF90 engine parameter by using a CONVERGE CFD software. Seven diesel-ethanol-PME blends (10 vol% to 40 vol%) PME were mixed in ethanol together with 50 vol% diesel fuel operated at 1600 RPM. High PME percentage increased the heat release rate (HRR). However, due to non-uniform chemical energy release from the reaction, the blends of 25 vol% PME with 25 vol% ethanol blends released the highest HRR. A high percentage of ethanol reduced the temperature and increased the heat release. From the cumulative heat release, ignition delay occurred for blends that had more than 15 vol% ethanol. In conclusion, blending ethanol and PME in diesel increased the combustion heat release rate to have better engine efficiency. However, the blend that contained more than 35 vol% ethanol was not suitable to be used in direct injection compressed ignition engine without any modification since the temperature and HRR of the blends is very low.

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