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首页> 美国政府科技报告 >Autoignition chemistry of paraffinic fuels and pro-knock and anti-knock additives: A detailed chemical kinetic study.
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Autoignition chemistry of paraffinic fuels and pro-knock and anti-knock additives: A detailed chemical kinetic study.

机译：石蜡燃料和亲爆和抗爆添加剂的自燃化学：详细的化学动力学研究。

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A numerical model is used to examine the chemical kinetic processes which lead to knocking in spark-ignition internal combustion engines. The construction and validation of the model is described in detail, including the low temperature reaction paths involving alkylperoxy radical isomerization. The numerical model is then applied to C(sub 1) to C(sub 7) paraffinic hydrocarbon fuels, and a correlation is developed between the Research Octane Number (RON) and the computed time of ignition for each fuel. Octane number is shown to depend on the rates of OH radical production through isomerization reactions, and factors influencing the rate of isomerization such as fuel molecule size and structure are interpreted in terms of the kinetic model. The knock behavior of fuel mixtures is examined, and the manner in which pro-knock and anti-knock additives influence ignition is studied numerically. The kinetics of methyl tert-butyl ether (MTBE) is discussed in particular detail. 28 refs., 5 figs., 5 tabs.

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