Prediction of performance a direct injection engine fueled with natural gas-hydrogen blends

Javad Zareei, Wan Mohd Faizal Wan Mahmood, Shahrir Abdullah, Yusoff Ali, Taib Iskandar Mohamad

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

With increasing concerns about energy shortages and environmental protection, research on improving engine fuel economy and reducing exhaust emissions has become a major research focus in combustion and engine development. Also, with conversion a conventional port fuel injection engine to direct injection (DI) and using alternative fuels, air/fuel mixture can be controlled and the engine is allowed to operate with very lean condition. With appropriate control of the air to fuel ratio gradient, the combustion process allows clean and controlled combustion, resulting in future improvement in fuel economy and emission control. In this study, the effects of mixtures of hydrogen and compressed natural gas (CNG) on a spark ignition engine are numerically considered. This article presents the results of a direct-injection engine using methane-hydrogen mixtures containing H2 between 0% and 30% by volume. The result shows that the percentage of hydrogen in the CNG increases the burning velocity of CNG and reduces the optimal ignition timing to obtain the maximum peak pressure of an engine running with a blend of hydrogen and CNG. With hydrogen addition to natural gas, the peak heat release rates increase. For 20% hydrogen, the maximum values at crank angles (CAs) for in-cylinder temperature and heat release rate are achieved at 6° CA, and the maximum temperature is approximately 150 K. also it can be seen that torque and power was increased with adding hydrogen to natural gas and it is about 3%. Port injection gasoline is converted into direct injection by CNG fuel in this engine.

Original languageEnglish
Pages (from-to)149-156
Number of pages8
JournalInternational Journal of Mechanical and Mechatronics Engineering
Volume14
Issue number3
Publication statusPublished - 2014

Fingerprint

Direct injection
Compressed natural gas
Natural gas
Engines
Hydrogen
Fuel economy
Alternative fuels
Gas fuels
Emission control
Fuel injection
Engine cylinders
Environmental protection
Air
Internal combustion engines
Gasoline
Ignition
Methane
Torque
Temperature

Keywords

  • Compressed natural gas
  • Direct injection
  • Hydrogen
  • Spark ignition engine

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Prediction of performance a direct injection engine fueled with natural gas-hydrogen blends. / Zareei, Javad; Wan Mahmood, Wan Mohd Faizal; Abdullah, Shahrir; Ali, Yusoff; Mohamad, Taib Iskandar.

In: International Journal of Mechanical and Mechatronics Engineering, Vol. 14, No. 3, 2014, p. 149-156.

Research output: Contribution to journalArticle

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