The gap between diesel vehicle emissions in laboratory tests compared to those in use has been addressed by the introduction of the Real Driving Emissions (RDE) requirements. Modern diesel technology now demonstrates low emissions on the road over a wide range of driving conditions. This paper further demonstrates that consistent low nitrogen oxide (NOx) and particle number (PN) emissions can be achieved over a wide range of driving conditions beyond Euro 6d RDE requirements, with emission control technologies combined in an integrated approach.An LNT (Lean NOx Trap) is combined with a dual-dosing SCR (Selective Catalytic Reduction) system. Low-load NOx control is achieved by the LNT in combination with a close-coupled SCR coated on the Diesel Particulate Filter (SDPF). High load conditions, on the other hand, are covered by the underfloor SCR system with a second AdBlue® injector. A P0 48V mild-hybrid system is also available to support the NOx control and to ensure good driving performance and fuel efficiency. An advanced control strategy is implemented to ensure optimal interaction between all emission control functionalities. The system was implemented on a C-segment demonstrator vehicle.The paper discusses the emissions tests performed and the results achieved. A combination of tests on the road and in the lab were carried out to cover a wide range of driving conditions. Special attention was paid to the robustness of the emission performance under urban and motorway driving conditions. Results demonstrate that each aftertreatment component contributes to achieving consistently low NOx emissions under all driving conditions. Particulate emissions are effectively controlled by the DPF.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Diesel Vehicle with Ultra-Low NOx Emissions on the Road


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    14th International Conference on Engines & Vehicles ; 2019



    Publication date :

    2019-09-09




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Diesel Vehicle with Ultra-Low NOx Emissions on the Road

    Demuynck, Joachim / Favre, Cecile / Bosteels, Dirk et al. | British Library Conference Proceedings | 2019


    Integrated Diesel System Achieving Ultra-Low Urban and Motorway NO~x Emissions on the Road

    Demuynck, J. / Favre, C. / Bosteels, D. et al. | British Library Conference Proceedings | 2019


    Fuel-based assessment of off-road diesel engine emissions

    Kean, A.J. / Sawyer, R.F. / Harley, R.A. | Tema Archive | 2000



    Measurement of On-Road Emissions for a Diesel Truck

    Wool, W. A. / Coordinating Research Council | British Library Conference Proceedings | 1995