随着化石燃料的日渐枯竭，生物燃料逐渐进入大众视野，乙醇氢气混合燃料作为新一代可再生清洁燃料引起了广泛关注，开展乙醇氢气空气预混火焰燃烧特性的影响研究非常有必要。基于定容燃烧系统，在初始温度为400 K，氢气比例为20%，当量比为0.7 ~ 1.4，初始压力为2 × 10⁵、3 × 10⁵、4 × 10⁵ Pa条件下研究乙醇／氢气／空气预混火焰的层流燃烧特性，根据Marinov的乙醇氧化反应机理以及实验数据对其层流燃烧速度进行研究，并分析其影响因素；基于Chemkin-Pro软件对其进行化学反应动力学研究并进行数值研究。结果表明：压力的增大会使得混合燃料的层流燃烧速度变慢。H基是乙醇消耗的主要途径，H、O、和OH自由基在乙醇提取H形成SC₂H₄OH、PC₂H₄OH的反应中起主导作用。R1：对层流燃烧速度表现出最积极的影响，活性自由基（H、O和OH）组成的活性自由基池的峰值摩尔分数在整个当量比范围内与乙醇的层流燃烧速度有很好的相关性且影响巨大，进一步探索这种相关性，发现其存在近似的线性关系，并拟合出层流燃烧速度随H +OH + CH₃和H + OH峰摩尔分数的表达式。

With the depletion of fossil fuels and the emergence of biofuels, ethanol-hydrogen fuel as a new generation of clean renewable fuel has attracted widespread attention. It is necessary to study the effects of ethanol-hydrogen air premixed flame combustion characteristics. Based on the constant volume combustion system, the laminar combustion characteristics of ethanol/hydrogen/air premixed flame were studied under the conditions of initial temperature of 400 K, hydrogen ratio of 20%, equivalent ratio of 0.7 ~ 1.4 and initial pressure of 2 × 10⁵, 3 × 10⁵ and 4 × 10⁵ Pa. Based on the mechanism of ethanol oxidation of Marinov and experimental data, the laminar combustion rate of Marinov was studied and the influencing factors were analyzed. Based on Chemkin-Pro software, the chemical reaction kinetics and numerical study were carried out. The results show that the laminar combustion rate of mixed fuel slows down with the increase of pressure. H group is the main pathway of ethanol consumption, and H, O, and OH radicals play a leading role in the reaction of SC₂H₄OH and PC₂H₄OH from H extracted by ethanol. R1: has the most positive effect on laminar combustion speed. The peak molar fraction of the active radical pool composed of active free radicals （H, O and OH）has a good correlation with the laminar combustion rate of ethanol in the whole equivalent ratio range, and the influence is huge. Further exploring this correlation, it is found that there is an approximate linear relationship, and the expression of laminar combustion rate with the peak molar fraction of H + OH + CH₃ and H + OH is fitted.