Experimental investigation of particulate emissions from a diesel engine fueled with ultralow-sulfur diesel fuel blended with diglyme

Yage Di, Chun Shun Cheung, Zuohua Huang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

53 Citations (Scopus)


Experiments are conducted on a 4-cylinder direct-injection diesel engine using ultralow-sulfur diesel as the base fuel and diglyme as the oxygenate component to investigate the particulate emissions of the engine under five engine loads at two engine speeds of 1800 rev min-1 and 2400 rev min-1. Blended fuels containing 5%, 10.1%, 15.2%, 20.4%, 25.7% and 53% by volume of diglyme, corresponding to 2%, 4%, 6%, 8%, 10% and 20% by mass of oxygen, are studied. The study shows that with the increase of oxygen in the fuel blends, smoke opacity, particulate mass concentration, NOx concentration and brake specific particulate emission are reduced at the two engine speeds. However, the proportion of soluble organic fraction is increased. For each blended fuel, the total particle number concentration is higher while the geometric mean diameter is smaller, compared with that of ultralow-sulfur diesel, though the particle number decreases with the oxygen content of the blended fuel. Furthermore, the blended fuels also increase the number concentrations of particles smaller than 100 nm.
Original languageEnglish
Pages (from-to)55-63
Number of pages9
JournalAtmospheric Environment
Issue number1
Publication statusPublished - 15 Oct 2009


  • Diglyme
  • Particle size distribution
  • Particulate mass concentration
  • Trade-off
  • Ultralow-sulfur diesel

ASJC Scopus subject areas

  • Environmental Science(all)
  • Atmospheric Science

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