Methane and gasoline blends are promising alternative fuels capable of potentially reducing automobile emissions. To perform simulations involving gasoline, iso-octane as a main component of gasoline reference fuel is often used. The laminar burning velocities (LBVs) of methane/iso-octane mixtures at 900 K and 80 bar at the 0.7–1.3 equivalence ratios were simulated in this paper. The LVBs under various conditions peaked at the 1.1 equivalence ratio. The LVB decreased at higher methane contents. Through flow rate sensitive analysis, main reactions that influence LBVs are discussed and proved by RoP (rate of production) sensitive analysis. LBV at the 1–10 bar and 300–900 K initial pressure and temperatures, respectively, can be obtained from a correlation with the maximum relative error of 4%.

甲烷和汽油的混合物是有希望的替代燃料，能够潜在地减少汽车排放。为了进行涉及汽油的模拟，经常使用异辛烷作为汽油参考燃料的主要成分。本文模拟了甲烷/异辛烷混合物在900 K和80 bar下在0.7–1.3当量比下的层流燃烧速度（LBVs）。LVB在各种条件下的峰值当量比为1.1。甲烷含量较高时，LVB降低。通过流速敏感性分析，讨论了影响LBV的主要反应，并通过RoP（生产率）敏感性分析进行了证明。可以从最大相对误差为4％的相关关系中分别获得1-10 bar和300-900 K初始压力和温度下的LBV。