An Experimental Study on Lean Combustion Characteristics of Hydrogen Enriched LPG Fuel in a LPG Engine

摘要

Finding an alternative fuel and reducing environmental pollution are the main goals for future internal combustion engines. The purpose of this study is to obtain low-emission and high-efficiency by hydrogen enriched LPG fuel in a LPG engine. An experimental study was carried out to obtain fundamental data for the Lean combustion and stability characteristics of pre-mixed LPG and hydrogen in a LPG engine with various fractions of hydrogen-LPG blends. To maintain equal volume ratio of fuel blend, the amount of LPG was decreased as hydrogen was gradually added. The results showed that the rate of heat release enhanced as the hydrogen fraction in the fuel blend was increased. Moreover combustion parameters such as rate of heat release and COV_(imep) are compared to predict the combustion stability.