The low temperature first ignition of n-butane/air mixtures is studied in this work, using a short chemistry model with all the important isomers. The reaction rates were obtained from the published data. The first ignition delay time and the overall heat release (temperature jump) were obtained analytically in closed form, where the parametric influence can be easily seen. The chain branching leading to a thermal runaway is produced by a competition in the decomposition of the butylperoxy radicals, and . The heat released by the low temperature kinetics is able to increase the temperature to high values, greater than the crossover temperature.

中文翻译：

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正丁烷的低温初燃

在这项工作中，使用包含所有重要异构体的简短化学模型研究了正丁烷/空气混合物的低温首次点火。反应速率是从公布的数据中获得的。首次点火延迟时间和整体热释放（温度跳跃）以封闭形式分析获得，其中参数影响可以很容易地看出。导致热失控的链支化是由丁基过氧自由基分解中的竞争产生的，并且。低温动力学释放的热量能够将温度升高到高于交叉温度的高值。