Abstract
In this study, ignition and combustion characteristic of biomass gas in a HCCI engine was investigated experimentally. 1.6L gas engine for 13A fuel was remodeled to 24.6 compression ratio and rigged up an air heater for HCCI combustion. Fuel was assumed biomass gas consisted of CH_4, H_2, CO, CO_2 and N_2. In experiments, fuel composition was changed H_2 or CO of this biomass gas. As results, a HCCI engine moved in indicated thermal efficiency 37%. Higher H_2 composition made ignition timing of a HCCI engine advanced and lower CO composition made it delayed.
