Comparative evaluation of a hydrogen/methanol combined-injection SI engine under dilute combustion conditions using various dilution working fluids

Key Points

• Hydrogen/methanol combined-injection improves engine performance compared to conventional fuels, showing significant efficiency gains.
• Key evidence indicates over 20% increase in thermal efficiency under dilute combustion with various working fluids.
• Assessment using comparative evaluation among different dilution working fluids in SI engines reveals optimal performance settings.
• Findings suggest using hydrogen/methanol combinations may enable greener and more efficient internal combustion technologies.