Studying and testing of combustion of hydrogen-enriched gasoline in a spsrk ignition engine

Abstract

The effect of the amount of hydrogen addition on the fuel consumption and emission of a spark ignition has been studied. Dynamometer test results for specific engine speed, engine load, equivalent ratio and hydrogen enrichment under steady state operation are presented and the engine minimum b.s.f.c specified . Experiments carried out with a four – cylinder four stork SI engine confirmed the possibility of expanding the combustion stability limit, which correlates well with the general trend of enhancing the rate of combustion. An increase of brake thermal efficiency has been obtained with a reduction of HC emission, the NOx emissions were higher, except for very lean mixtures.