This article reviews recent theoretical developments on incipient ignition induced by radical runaway in systems described by detailed chemistry. Employing eigenvalue analysis, we first analyze the canonical explosion limits of mixtures of hydrogen and oxygen, yielding explicit criteria that well reproduce their characteristic Z-shaped response in the pressure-temperature plot. Subsequently, we evaluate the role of hydrogen addition to the explosion limits of mixtures of oxygen with either carbon monoxide or methane, demonstrating and quantifying its strong catalytic effect, especially for the carbon monoxide cases. We then discuss the role of low-temperature chemistry in the autoignition of large hydrocarbon fuels, with emphasis on the first-stage ignition delay and the associated negative-temperature coefficient phenomena. Finally, we extend the analysis to problems of nonhomogeneous ignition in the presence of convective-diffusive transport, using counterflow as an example, demonstrating the canonical similarity between homogeneous and nonhomogeneous systems. We conclude with suggestions for potential directions for future research.

中文翻译：

---

关于燃烧系统中的自由基引起的点火。

本文回顾了由详细化学描述的系统中自由基失控引起的初次点火的最新理论进展。通过特征值分析，我们首先分析氢和氧混合物的规范爆炸极限，得出明确的标准，以在压力-温度曲线图中很好地再现其特征性的Z形响应。随后，我们评估了加氢在氧气与一氧化碳或甲烷的混合物爆炸极限中的作用，证明并定量了其强大的催化作用，尤其是在一氧化碳情况下。然后，我们将讨论低温化学在大型烃类燃料自燃中的作用，重点是第一阶段的点火延迟和相关的负温度系数现象。最后，我们以对流为例，将分析扩展到对流扩散扩散存在下的非均匀点火问题，证明了均匀系统与非均匀系统之间的典型相似性。最后，我们建议了未来研究的潜在方向。