Optimal Control for Cleaner Hybrid Vehicles: A Backward Approach

This work presents an application of the optimal control theory to find trade offs between fuel consumption and pollutant emissions (CO, HC, NOx) sustaining hybrid vehicles. Both cold start normal operations are considered. The problem formulation includes two state variables: battery energy catalyst temperature; three torque repartition engine motor, spark advance, equivalence ratio. Optimal results were obtained by delaying first crank after urban part mission. show that a quick light off is performed. Once primed, special parameters values adopted operate engine.