The effect of the di-tertiary butyl peroxide (DTBP) additive on HCCI combustion of fuel blends of ethanol and diethyl ether

J. Hunter MacK*, Robert Dibble, Bruce A. Buchholz, Daniel L. Flowers

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

16 Scopus citations

Abstract

The influence of the small amounts (1-3%) of the additive di-tertiary butyl peroxide (DTBP) on the combustion event of Homogeneous Charge Compression Ignition (HCCI) engines was investigated using engine experiments, numerical modeling, and carbon-14 isotope tracing. DTBP was added to neat ethanol and diethyl ether (DEE) in ethanol fuel blends for a range of combustion timings and engine loads. The addition of DTBP to the fuel advanced combustion timing in each instance, with the DEE-in-ethanol mixture advancing more than the ethanol alone. A numerical model reproduced the experimental results. Carbon-14 isotope tracing showed that more ethanol burns to completion in DEE-in-ethanol blends with a DTBP additive when compared to results for DEE-in-ethanol without the additive. However, the addition of DTBP did not elongate the heat release in either case. The additive advances combustion timing for both pure ethanol and for DEE-in-ethanol mixtures, but the additive results in more of an advance in timing for the DEE-in-ethanol mixture. This suggests that although there are both thermal and kinetic influences from the addition of DTBP, the thermal effects are more important.

Original languageEnglish (US)
DOIs
StatePublished - Dec 1 2005
Event2005 SAE Brasil Fuels and Lubricants Meeting, SFL 2005 - Rio de Janiero, Brazil
Duration: May 11 2005May 11 2005

Other

Other2005 SAE Brasil Fuels and Lubricants Meeting, SFL 2005
CountryBrazil
CityRio de Janiero
Period05/11/0505/11/05

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering

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