Ternary mixed biofuels are receiving increased scientific attention, and recently, researchers proposed different biofuel mixtures under dissimilar engine conditions; each researcher argued that his/her proposed one is the next generation alternative. Accordingly, such ternary biofuel mixtures are extremely needed to be compared against each other under the same engine conditions to provide the best/most promising one(s) as coming fuel alternative(s) for SI engines. In the current study, comparing of using ternary bio-methanol–iso-butanol–gasoline (MiB), bio-ethanol–n-butanol–gasoline (EnB), and bio-methanol–n-butanol–gasoline (MnB) fuel mixtures in pollutant releases and behavior/performance of SI engines is carried out for the first time. The ternary alcohol–gasoline combined fuels were also compared against dual alcohol–gasoline fuel mixtures. In particular, MiB is compared against iso-butanol–gasoline (iB) and bio-methanol–gasoline (M) fuel mixtures; EnB is compared against n-butanol–gasoline (nB) and bio-ethanol–gasoline (E) fuel mixtures; MnB is compared against nB and M fuel mixtures. The comparisons of all combined fuels (ternary and dual bases) are carried out experimentally at the same biofuel mixtures rates and engine working conditions and also compared against pure fossil–gasoline. The results showed that the behavior/performance of MiB, MnB, and EnB are all lower than the pure fossil–gasoline, except for pressure inside cylinder for MiB. The highest behavior/performance among all ternary biofuel mixtures is introduced by MiB. Comparisons of pollutant releases (CO, UHC, and CO2) showed that MiB has the lowest levels, while MnB showed the highest levels, among all ternary mixtures. Comparisons to pure fossil–gasoline, the MiB and EnB ternary mixtures introduced lower, but MnB showed higher pollutant releases than the pure fossil–gasoline fuel.

三元混合生物燃料正受到越来越多的科学关注，最近，研究人员提出了在不同发动机条件下使用不同生物燃料混合物的建议。每个研究人员都认为，他/她提出的方案是下一代的替代方案。因此，非常需要在相同的发动机条件下将这种三元生物燃料混合物彼此进行比较，以提供最佳/最有希望的一种作为即将来临的SI发动机燃料替代品。在本研究中，比较了使用三元生物甲醇-异丁醇-汽油（MiB），生物乙醇-正丁醇-汽油（EnB）和生物甲醇-n首次在SI发动机的污染物排放和行为/性能中使用-丁醇-汽油（MnB）燃料混合物。还将三元醇-汽油混合燃料与双元醇-汽油混合燃料进行了比较。特别是，将MiB与异丁醇-汽油（iB）和生物甲醇-汽油（M）的燃料混合物进行了比较；EnB与n进行比较-丁醇-汽油（nB）和生物乙醇-汽油（E）的燃料混合物；将MnB与nB和M混合燃料进行比较。所有混合燃料（三重和双碱）的比较均在相同的生物燃料混合速率和发动机工作条件下进行了实验，并与纯化石-汽油进行了比较。结果表明，除了MiB的气缸内压力外，MiB，MnB和EnB的行为/性能均低于纯化石汽油。MiB引入了所有三元生物燃料混合物中最高的性能/性能。在所有三元混合物中，污染物排放（CO，UHC和CO2）的比较表明，MiB的含量最低，而MnB的含量最高。与纯化石-汽油，MiB和EnB三元混合物进行比较后发现，