Investigation of HCCI combustion of diethyl ether and ethanol mixtures using carbon 14 tracing and numerical simulations
Despite the rapid combustion typically experienced in homogeneous charge compression ignition (HCCI), components in fuel mixtures do not ignite in unison or burn equally. In our experiments and modeling of blends of diethyl ether (DEE) and ethanol (EtOH), the DEE led combustion and proceeded further...
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Published in | Proceedings of the Combustion Institute Vol. 30; no. 2; pp. 2693 - 2700 |
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Main Authors | , , , |
Format | Journal Article Conference Proceeding |
Language | English |
Published |
United States
Elsevier Inc
01.01.2005
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Subjects | |
Online Access | Get full text |
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Summary: | Despite the rapid combustion typically experienced in homogeneous charge compression ignition (HCCI), components in fuel mixtures do not ignite in unison or burn equally. In our experiments and modeling of blends of diethyl ether (DEE) and ethanol (EtOH), the DEE led combustion and proceeded further toward completion, as indicated by
14C isotope tracing. A numerical model of HCCI combustion of DEE and EtOH mixtures supports the isotopic findings. Although both approaches lacked information on incompletely combusted intermediates plentiful in HCCI emissions, the numerical model and
14C tracing data agreed within the limitations of the single zone model. Despite the fact that DEE is more reactive than EtOH in HCCI engines, they are sufficiently similar that we did not observe a large elongation of energy release or significant reduction in inlet temperature required for light-off, both desired effects for the combustion event. This finding suggests that, in general, HCCI combustion of fuel blends may have preferential combustion of some of the blend components. |
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Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23 UCRL-PROC-201918 USDOE W-7405-ENG-48 |
ISSN: | 1540-7489 1873-2704 |
DOI: | 10.1016/j.proci.2004.08.136 |