Impact of ammonia energy ratio on combustion characteristics, energy efficiency, and emissions in a dual-fuel ammonia/diesel engine

Spray Evolution, Turbulent Mixing, and Combustion Behavior of Diesel–Ammonia–Methanol Ternary Fuel Blends: A CFD Study

Numerical investigation into the influence of hydrogen energy ratio on the combustion characteristics of ammonia fuel in a marine engine

This work carries out a numerical study to investigate the effect of changing the hydrogen energy ratio (HER) on the combustion performance, pollutant formation, and the thermal-structural stresses in a large-scale marine engine running with a mixture of ammonia-hydrogen fuel. The combustion of the ammonia-air mixture...

Impact of Compression Ratio on Combustion and Emission Characteristics of Hydrogen Fuel for Turboprop Aircraft Engines Operating at Various Excess Air Coefficients

One of the ways to mitigate carbon emission from air transportation can be through the integration of hydrogen internal combustion engines. This paper examines the performance of TurbAero TA200TP direct-injection hydrogen fueled engine, its emissions, and its combustion characteristics when the engine has compressio...

Physical-Chemical Influence Mechanisms on the Ignition Process in High-Pressure Marine Engine Combustion Mode

Numerical Investigation of Engine Performance and Emission Reduction of Diesel and Methane in a Single-Cylinder Dual-Fuel Engine Using Ansys ICE Fluent

This study investigates the engine performance and emission characteristics of diesel and methane in a single-cylinder dual-fuel engine using Computational Fluid Dynamics (CFD) simulations through ANSYS ICE Fluent. The research is motivated by the need to explore alternative fuels to reduce greenhouse gas emissions and...

Development and Validation of a Combustion Model for a High-Performance H2 Engine Considering Thermo-Diffusive Instability Effects

This study presents the development and validation of a predictive 0D/1D combustion model for a high-performance direct injection hydrogen spark-ignition engine, explicitly incorporating thermo-diffusive instability (TDI) effects through a physics-based formulation derived from linear flame stability theory and DNS-inf...