This study reports the impacts of dual fuel mixtures on the theoretical performance characteristics of a spark ignition engine (SIE). The effects of addition of liquefied hydrogen, methane, butane, propane (additive fuels) into gasoline, iso-octane, benzene, toluene, hexane, ethanol and methanol fuels (primary fuels) on the variation of power, indicated mean effective pressure (IMEP), thermal efficiency, exergy efficiency, were examined by using a combustion model. The fuel additives were ranged from 10 to 50% by mass. The results exhibited that the ratios of hydrogen, methane, butane, propane noticeably affect the performance of the engine. The maximum increase ratio of power is 82.59% with 50% of toluene ratio and its maximum decrease ratio is 10.84% with 50% of methanol ratio in hydrogen mixtures. The maximum increase ratio of thermal efficiency and exergy efficiency are observed as 26.75% and 32.23% with the combustion of benzene-hydrogen mixtures. The maximum decrease ratio of thermal efficiency is 29.71% with the combustion of 50% of methanol ratio and it is 21.95% for the exergy efficieny with the combustion of 50% of ethanol ratio in hydrogen mixtures. The power, IMEP, thermal efficiency and exergy efficiency of primary fuels demonstrate different variation characteristics with respect to type and ratio of additive fuels.

本研究报告了双燃料混合物对火花点火发动机 (SIE) 的理论性能特征的影响。在汽油、异辛烷、苯、甲苯、己烷、乙醇和甲醇燃料（主要燃料）中添加液化氢、甲烷、丁烷、丙烷（添加剂燃料）对功率变化的影响，表示平均有效压力（IMEP )、热效率、火用效率，通过使用燃烧模型进行了检验。燃料添加剂的范围为 10 至 50%（按质量计）。结果表明，氢气、甲烷、丁烷、丙烷的比例显着影响发动机的性能。在氢气混合物中，当甲苯比例为50%时，功率的最大增加率为82.59%，而甲醇比例为50%时，功率的最大下降率为10.84%。苯氢混合物燃烧时热效率和火用效率的最大增加比分别为26.75%和32.23%。燃烧50%甲醇时热效率的最大下降率为29.71%，燃烧50%乙醇时火用效率最大下降率为21.95%。初级燃料的功率、IMEP、热效率和火用效率在添加剂燃料的类型和比例方面表现出不同的变化特征。