The continuous depletion of conventional fuels requires urgent research work to identify feasible alternative fuels to meet the minimum environmental impact of sustainable energy demand. Due to good combustion characteristics, acetylene being one of such alternative fuel and has the potential to be a future fuel. In this concern, it was decided to perform experimentation on a stationary water‐cooled spark ignition (S.I.) engine in acetylene‐gasolinedual fuel mode. In this experimental investigation, the effects of acetylene and gasoline mixtures on the performance, emissions, and combustion characteristics have been observed. Acetylene was supplied through a modified engine intake manifold at optimized conditions for petrol. The optimum flow rate of acetylene was found by comparing the performance and emissions for 50, 100, and 150 LPH, respectively, at 1600 revolution per minute (rpm). The experimental results showed that the brake thermal efficiency at 100 LPH was the highest amongst all the flow rates under study, throughout the load range in acetylene‐gasoline dual fuel mode. HC, CO, and CO₂ emissions for this acetylene flow rate were either low or comparable to that of pure gasoline. Based on this study, it can be concluded that use of acetylene in S.I. engine without any major modifications is feasible without having any adverse effect on the engine performance, combustion, and emissions.

中文翻译：

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乙炔燃料对固定式火花点火发动机性能，排放和燃烧特性的影响

常规燃料的持续消耗需要紧迫的研究工作，以确定可行的替代燃料，以满足可持续能源需求对环境的最小影响。由于良好的燃烧特性，乙炔是这种替代燃料之一，并且有可能成为未来的燃料。考虑到这一点，决定在乙炔-汽油基础燃料模式下对固定式水冷火花点火（SI）发动机进行实验。在此实验研究中，已观察到乙炔和汽油混合物对性能，排放和燃烧特性的影响。乙炔是通过改进的发动机进气歧管在最优化的汽油条件下供应的。通过比较50、100和150 LPH的性能和排放，可以找到最佳的乙炔流速。分别以每分钟1600转（rpm）的速度旋转。实验结果表明，在乙炔-汽油双燃料模式下的整个负载范围内，在所有研究的流量中，100 LPH的制动热效率最高。HC，CO和CO此乙炔流量的₂排放较低或与纯汽油相当。根据这项研究，可以得出结论，在不做任何重大修改的情况下，在SI发动机中使用乙炔是可行的，而不会对发动机性能，燃烧和排放造成任何不利影响。