Hydrogen-diesel dual-fuel engine optimization for CHP systems

The analysis showed that hydrogen fuel with high EGR rates and single diesel injection could provide a simultaneous reduction of carbon emissions up to 80% combined with a reduction in NOx of over 50% and an enhanced thermal efficiency. Total hydrocarbons were the only emissions deteriorated compared to the conventional diesel operation. Engine operation with 55% and 75% hydrogen energy ratios passing the Tier 4 Nonroad Compression Ignition emission standards was achieved.