Combustion and emission characteristics of stratified premixed and diffusion modes in direct-injection ammonia-hydrogen SI engines

Key Points

• Combustion characteristics differ significantly between stratified premixed and diffusion modes, affecting performance.
• Emission levels vary based on combustion mode, with stratified premixed showing potential for lower pollutants.
• Assessment through experimental analysis on direct-injection ammonia-hydrogen spark-ignition engines highlights crucial differences.
• Understanding these characteristics may enable advancements in engine efficiency and emission reduction.