Objective : To design and implement control oriented engine-out NOx and soot emission models for diesel engines
Activities
Diesel Engine Combustion Model
Manifold Models for intake and exhaust mass flows considering EGR and Turbo effects.
Cylinder Model for the combustion and mass exchange/mixing modes
ROHR model for pressure, mass burnt fraction and temperature prediction.
Chemical Kinetics Equilibrium solver for adiabatic temperature and composition.
NOx prediction model
Zeldovich mechanism based on temperature and composition
Extended Zeldovich mechanism with additional temperature related correlations based on the Zeldovich reaction for NOx formation.
Soot Prediction Model
Development of fuel injection and spray model
Determination of flame parameters and thermodynamic properties
Rates of soot formation and oxidation
Controller Design and Optimization
System Identification determine the states and system dynamics.
Suitable Controller Strategy for EGR and VGT valves.
Control Optimization for reduced emissions.
Validation with GT power model analysis and model correction
Model validation for correction by comparing it with GT power results by running the models in EPA and WHC (World Harmonized Cycle by ICCT).