The effects of jatropha-derived biodiesel on diesel engine combustion and emission characteristics

Xiaodan Cui, Teagun Kim, Yusuke Fujii, Jin Kusaka, Yasuhiro Daisho, Manida Tongroon, Nuwong Chollacoop

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

The objective of the present research is to investigate the effects on diesel engine combustion and NOx and PM emission characteristics in case of blending the ordinary diesel fuel with biodiesel in passenger car diesel engines. Firstly, we conducted experiments to identify the combustion and emissions characteristics in a modern diesel engine complying with the EURO 4 emission standard. Then, we developed a numerical simulation model to explain and generalize biodiesel combustion phenomena in detail and generalize emission characteristics. The experimental and simulation results are useful to reduce biodiesel emissions by controlling engine operating and design parameters in the diesel engine. Engine tests were conducted and a mathematical model created to investigate the effects of 40% and 100% methyl oleate modeled fuel representing Jatropha-derived biodiesel on diesel combustion and emission characteristics, over a wide range of passenger car DI diesel engine operating conditions. The thermal efficiency and emissions of these fuels were compared to real Jatropha-derived biodiesel. The engine used in this study complies with the EURO4 emission regulation, having a displacement of 2.2 L for passenger car applications. In the engine tests, seven steady-state engine operating conditions typically encountered in the NEDC and US06 modes were chosen. Emissions measurements and heat release analyses showed that biodiesel can significantly reduce PM (particulate matter) without influencing heat release rate, NOx emission and brake thermal efficiency under the tested conditions. Detailed analyses were made of particle size distributions and chemical components including the soluble organic fraction. For comparison with experimental results, we developed a zero-dimensional reaction model with detailed chemical kinetics to identify the effects on engine combustion, performance and emissions. The results show that 100% methyl oleate tends to emit soot at a higher temperature region while the blended fuel emits soot at lower temperatures much closer to those at the region where the ordinary diesel fuel emits soot. However, NOx emission did not vary significantly between diesel fuel and biodiesel. The ignition delay of methyl oleate is shorter than that of diesel and tends to be shorter as the injection pressure increases. Based on the experimental and simulation results, the engine operating and design parameters of the diesel engine fueled with biofuel can be optimized to ensure thermal efficiency along with sufficiently reducing emissions.

Original languageEnglish
Title of host publicationSAE Technical Papers
Volume9
DOIs
Publication statusPublished - 2012
EventSAE 2012 International Powertrains, Fuels and Lubricants Meeting, FFL 2012 - Malmo
Duration: 2012 Sep 182012 Sep 20

Other

OtherSAE 2012 International Powertrains, Fuels and Lubricants Meeting, FFL 2012
CityMalmo
Period12/9/1812/9/20

Fingerprint

Biodiesel
Diesel engines
Engines
Passenger cars
Soot
Diesel fuels
Biofuels
Brakes
Reaction kinetics
Particle size analysis
Ignition
Hot Temperature
Mathematical models
Temperature
Computer simulation
Experiments

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering

Cite this

Cui, X., Kim, T., Fujii, Y., Kusaka, J., Daisho, Y., Tongroon, M., & Chollacoop, N. (2012). The effects of jatropha-derived biodiesel on diesel engine combustion and emission characteristics. In SAE Technical Papers (Vol. 9) https://doi.org/10.4271/2012-01-1637

The effects of jatropha-derived biodiesel on diesel engine combustion and emission characteristics. / Cui, Xiaodan; Kim, Teagun; Fujii, Yusuke; Kusaka, Jin; Daisho, Yasuhiro; Tongroon, Manida; Chollacoop, Nuwong.

SAE Technical Papers. Vol. 9 2012.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Cui, X, Kim, T, Fujii, Y, Kusaka, J, Daisho, Y, Tongroon, M & Chollacoop, N 2012, The effects of jatropha-derived biodiesel on diesel engine combustion and emission characteristics. in SAE Technical Papers. vol. 9, SAE 2012 International Powertrains, Fuels and Lubricants Meeting, FFL 2012, Malmo, 12/9/18. https://doi.org/10.4271/2012-01-1637
Cui, Xiaodan ; Kim, Teagun ; Fujii, Yusuke ; Kusaka, Jin ; Daisho, Yasuhiro ; Tongroon, Manida ; Chollacoop, Nuwong. / The effects of jatropha-derived biodiesel on diesel engine combustion and emission characteristics. SAE Technical Papers. Vol. 9 2012.
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abstract = "The objective of the present research is to investigate the effects on diesel engine combustion and NOx and PM emission characteristics in case of blending the ordinary diesel fuel with biodiesel in passenger car diesel engines. Firstly, we conducted experiments to identify the combustion and emissions characteristics in a modern diesel engine complying with the EURO 4 emission standard. Then, we developed a numerical simulation model to explain and generalize biodiesel combustion phenomena in detail and generalize emission characteristics. The experimental and simulation results are useful to reduce biodiesel emissions by controlling engine operating and design parameters in the diesel engine. Engine tests were conducted and a mathematical model created to investigate the effects of 40{\%} and 100{\%} methyl oleate modeled fuel representing Jatropha-derived biodiesel on diesel combustion and emission characteristics, over a wide range of passenger car DI diesel engine operating conditions. The thermal efficiency and emissions of these fuels were compared to real Jatropha-derived biodiesel. The engine used in this study complies with the EURO4 emission regulation, having a displacement of 2.2 L for passenger car applications. In the engine tests, seven steady-state engine operating conditions typically encountered in the NEDC and US06 modes were chosen. Emissions measurements and heat release analyses showed that biodiesel can significantly reduce PM (particulate matter) without influencing heat release rate, NOx emission and brake thermal efficiency under the tested conditions. Detailed analyses were made of particle size distributions and chemical components including the soluble organic fraction. For comparison with experimental results, we developed a zero-dimensional reaction model with detailed chemical kinetics to identify the effects on engine combustion, performance and emissions. The results show that 100{\%} methyl oleate tends to emit soot at a higher temperature region while the blended fuel emits soot at lower temperatures much closer to those at the region where the ordinary diesel fuel emits soot. However, NOx emission did not vary significantly between diesel fuel and biodiesel. The ignition delay of methyl oleate is shorter than that of diesel and tends to be shorter as the injection pressure increases. Based on the experimental and simulation results, the engine operating and design parameters of the diesel engine fueled with biofuel can be optimized to ensure thermal efficiency along with sufficiently reducing emissions.",
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