Combustion, performance and emissions of ULSD, PME and B50 fueled multi-cylinder diesel engine with naturally aspirated hydrogen

J. H. Zhou, Chun Shun Cheung, Chun Wah Leung

Research output: Journal article publicationJournal articleAcademic researchpeer-review

21 Citations (Scopus)


An experimental study was conducted on a diesel engine fueled with ultra-low sulfur diesel (ULSD), palm methyl ester (PME), a blended fuel containing 50% by volume each of the ULSD and PME, and naturally aspirated hydrogen, at an engine speed of 1800 rev min-1under five loads. Hydrogen was added to provide 10% and 20% of the total fuel energy. The following results are obtained with hydrogen addition. There is little change in peak in-cylinder pressure and peak heat release rate. The influence on fuel consumption and brake thermal efficiency is engine load and fuel dependent; being negative for the three liquid fuels at low engine loads but positive for ULSD and B50 and negligible for PME at medium-to-high loads. CO and CO2emissions decrease. HC decreases at medium-to-high loads, but increases at low loads. NOxemission increases for PME only but NO2increases for the three liquid fuels. Smoke opacity, particle mass and number concentrations are all reduced for the three liquid fuels.
Original languageEnglish
Pages (from-to)14837-14848
Number of pages12
JournalInternational Journal of Hydrogen Energy
Issue number34
Publication statusPublished - 13 Nov 2013


  • Combustion
  • Diesel engine
  • Emissions
  • Hydrogen
  • Performance

ASJC Scopus subject areas

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

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