Ignition characteristics of diesel and canola biodiesel sprays in the low-temperature combustion regime

Casey M. Allen, Elisa Toulson, David L S Hung, Harold Schock, Dennis Miller, Tonghun Lee

Research output: Contribution to journalArticle

  • 14 Citations

Abstract

The objective of this work is to investigate the spray ignition characteristics of diesel and canola-derived biodiesel in a rapid compression machine at the low temperatures (676-816 K) and reduced oxygen concentrations (12 and 18%) that are used in low-temperature combustion strategies of advanced diesel engines. A method for testing ignition delay times and apparent heat release rates at a series of temperatures is developed and characterized, whereby a given temperature is attained prior to the fuel spray by altering the charge cooling time after the end of compression. A single-zone heat release model is formulated and used with the experimental pressure data to calculate two unique ignition delay periods. For diesel, the total ignition delays measured with this approach are found to correlate very well with diesel ignition delay data published in the literature. When the first ignition delay period is compared, which approximates the initial time of heat release after the start of injection, it is noted that biodiesel ignites marginally faster (

LanguageEnglish (US)
Pages2896-2908
Number of pages13
JournalEnergy and Fuels
Volume25
Issue number7
DOIs
StatePublished - Jul 21 2011

Profile

Biofuels
Biodiesel
Ignition
Temperature
Diesel engines
Time delay
Oxygen
Cooling
Testing
Hot Temperature

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Energy Engineering and Power Technology
  • Fuel Technology

Cite this

Ignition characteristics of diesel and canola biodiesel sprays in the low-temperature combustion regime. / Allen, Casey M.; Toulson, Elisa; Hung, David L S; Schock, Harold; Miller, Dennis; Lee, Tonghun.

In: Energy and Fuels, Vol. 25, No. 7, 21.07.2011, p. 2896-2908.

Research output: Contribution to journalArticle

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