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Strategies for nitrogen oxides mitigation in hydrogen–diesel dual-fuel engines
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DOI：10.1016/j.fuproc.2026.108459.png)
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Abstract
En 中文
• A CFD model was validated for a diesel-H2 dual-fuel engine. • EGR and diesel-water emulsions were assessed for NOx reduction. • 15% EGR significantly decreased NOx but slightly increased CO. • Addition of water emulsions presented a more discrete decrease in NOx. • Temperature profiles prove these strategies eliminate hot spots and hinder thermal NOx.
Keywords:
CFD
Dual fuel
Diesel engine
Hydrogen
Nitrogen oxides emissions
ATDC
After Top Dead Center
BTDC
Before Top Dead Center
CAD
Crank Angle Degree
CD
Conventional Diesel
CFD
Computational Fluid Dynamics
DF
Dual Fuel
DMC
Discrete Multicomponent
E
Emulsion
EGR
Exhaust Gas Recirculation
EVO
Exhaust Valve Opening
GHG
Greenhouse Gas
HCCI
Homogeneous Charge Compression Ignition
HES
Hydrogen Energy Share
HR
Heat Release
IMEP
Indicated Mean Effective Pressure
ISFC
Indicated Specific Fuel Consumption
IVC
Inlet Valve Closing
LHV
Lower Heating Value
NG
Natural Gas
NOx
Nitrogen Oxides
RCCI
Reactivity Controlled Compression Ignition
RMSE
Root Mean Square Error
SAM
Solution Adaptive Mesh
ROHR
Rate of Heat Release
ROP
Rate-of-Production
TDC
Top Dead Center
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