Abstract
Using hydrogen in spark-ignition engines is promising approaches to decarburizing transport and securing domestic energy supply. Hydrogen is a versatile fuel that enables high efficiencies and low emissions of NOx (oxides of nitrogen) throughout the load range. However, there are lasting issues concerning its storage and distribution. An effective way to improve a spark-ignited engine performance is to use lean mixtures combustion. Because gasoline has a narrow flammability limits the engine fuelled only with gasoline could suffer a partial burning or misfire at lean mixtures burning. Due to its good combustion properties of hydrogen the lean burn limit of the gasoline engine can be improved by adding hydrogen. In this paper a single cylinder engine was modified to be fueled with hydrogen and gasoline. The engine tests were conducted at different operates regimen and different excess air ratios. The hydrogen addition stopped at 10%. The tests investigate the performance of the hydrogen-gasoline engine at different dosages. Various hydrogen flow rates were injected in the engine cylinder to investigate the effect of hydrogen addition on engine performance.
Keywords: Hydrogen, Combustion, Emissions, Engine, Thermal Efficiency