Evaluation of technological solutions for compliance of environmental legislation in light-duty passenger: A numerical and experimental approach.

• On-road fuel use and emission with PEMS. • On-road data used to build fuel and emission maps. • Experimental on-road data used for numerical analysis. • Numerical analysis of current fuel use and emission mitigation technologies. • Analysis within the framework of Real Driving Emission regulation. This work includes an original approach that combines on-road experimental fuel use and emission maps and a numerical analysis to assess the impacts of fuel efficiency and NO x emission reduction technologies on a light-duty passenger vehicle. The solutions analyzed include Stop/Start, vehicle mass reduction up to 100 kg, drag coefficient reduction, as well as SCR and Lean NO x Trap systems. For this purpose, a reference EURO 6 diesel vehicle was monitored under real-world driving conditions with a PEMS and the experimental data obtained allowed building engine maps of fuel use and NO x emission to be used on AVL Cruise software. The results obtained with Cruise were firstly validated with the experimental data (with errors up to 10,6% on fuel and 17,5% on NOx) and then the solutions implemented were tested individually and simulated on 48 real-world driving cycles. The results pointed to Stop/Start, mass reduction of 100 kg and SCR as the most effective solutions in reducing fuel consumption and NO x emission up to 14,6% and 57,5%, respectively, depending on driving context. The combination of these technologies was tested and the results showed maximum fuel savings of 17% on urban context and a maximum reduction of 58% on NO x on combined driving cycles. Despite all the efforts, real-world driving presents NO x emissions not yet compliant with standards, indicating the need for new strategies in order to face the environmental challenges. [ABSTRACT FROM AUTHOR]