Performance and emission comparison of a supercharged dual-fuel engine fueled by producer gases with varying hydrogen content

Murari Mohon Roy, Eiji Tomita, Nobuyuki Kawahara, Yuji Harada, Atsushi Sakane

Research output: Contribution to journalArticlepeer-review

98 Citations (Scopus)


This study investigated the effect of hydrogen content in producer gas on the performance and exhaust emissions of a supercharged producer gas-diesel dual-fuel engine. Two types of producer gases were used in this study, one with low hydrogen content (H2 = 13.7%) and the other with high hydrogen content (H2 = 20%). The engine was tested for use as a co-generation engine, so power output while maintaining a reasonable thermal efficiency was important. Experiments were carried out at a constant injection pressure and injection quantity for different fuel-air equivalence ratios and at various injection timings. The experimental strategy was to optimize the injection timing to maximize engine power at different fuel-air equivalence ratios without knocking and within the limit of the maximum cylinder pressure. Two-stage combustion was obtained; this is an indicator of maximum power output conditions and a precursor of knocking combustion. Better combustion, engine performance, and exhaust emissions (except NOx) were obtained with the high H2-content producer gas than with the low H2-content producer gas, especially under leaner conditions. Moreover, a broader window of fuel-air equivalence ratio was found with highest thermal efficiencies for the high H2-content producer gas.

Original languageEnglish
Pages (from-to)7811-7822
Number of pages12
JournalInternational Journal of Hydrogen Energy
Issue number18
Publication statusPublished - Sept 2009


  • Alternative fuel
  • Co-generation
  • Dual-fuel engine
  • Hydrogen content in producer gas
  • Injection parameters
  • Producer gas
  • Supercharging

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology


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