Performance study of a four-stroke spark ignition engine working with both of hydrogen and ethyl alcohol as supplementary fuel

摘要

The effect of the amount of hydrogen/ethyl alcohol addition on the performance and pollutant emission of a four- stroke spark ignition engine has been studied. The results of the study show that all engine performance parameters have been improved when operating the gasoline spark ignition engine with dual addition of hydrogen and ethyl alcohol. The important improvements of alcohol addition are to reduce the NO_x emission with increase in the higher useful compression ratio and output power of hydrogen-supplemented engine.