A numerical study of the effects of oxy-fuel combustion under homogeneous charge compression ignition regime

The European Union (EU) has recently adopted new directives to reduce the level of pollutant emissions from non-road mobile machinery engines. main scope project RIVER for which this study is relating develop possible solutions achieve nitrogen-free combustion and zero-carbon in diesel aims apply oxy-fuel with Carbon Capture Storage (CCS) technology eliminate NOx capture store carbon emissions. As part project, a computational fluid dynamic (CFD) analysis been performed investigate effects on characteristics engine operating conditions under Homogenous Charge Compression Ignition (HCCI) mode. A reduced chemical n-heptane-n-butanol-PAH mechanism consists 76 species 349 reactions applied HCCI modeling. Different diluent strategies based volume fraction oxygen gas considered over wide range air-fuel equivalence ratios. Variation ratio achieved by adding different percentages dioxide 77 83 vol.% intake charge. Results show that indicated thermal efficiency (ITE) 32.7% 20.9% as CO 2 concentration increased 77% 83% at low loads while it doesn’t bring any remarkable change high loads. It also found brought PM very ultra-low (near zero) have completely eliminated.