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2025 | OriginalPaper | Buchkapitel

Exhaust Aftertreatment for Future Emission Legislation for Non-Road Vehicles

verfasst von : Jelto Frerichs, Martin Weber, Joseph Dembler, Hubertus Ulmer, Thaddaeus Delebinski

Erschienen in: Heavy-Duty-, On- und Off-Highway-Motoren 2023

Verlag: Springer Fachmedien Wiesbaden

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Abstract

The latest proposals by CARB (California Air Resources Board) for Tier 5 legislation forecast significant tightening of pollutant emissions e.g., NO_x while also extending testing conditions, leading to exceptional challenges in powertrain development. In addition, the discussed reduction of CO₂ emissions enforces a continuous reduction in fuel consumption. For this purpose, an optimal calibration of engine-based thermal management in combination with an advanced EAT (Emission After Treatment) layout are key technologies. Furthermore, cold start and testing with low load cycles may also require external EAT heating measures.

In this study, a systematic investigation is carried out by means of a model-based holistic approach, targeting an EAT layout definition and optimal thermal management calibration to comply. A close-coupled dual-stage SCR (Selective Catalytic Reduction) with twin dosing is considered to minimize the fuel penalty during heat up phases. An optimization of the engine hardware concept and the engine thermal management is carried out and the potentials regarding CO₂ emissions are quantified.

This study shows that the proposed emission limits can be reached with a dual-stage SCR system. Implementing a keep-warm operation mode for low-load operation also paves the way for reaching NO_x-limits within the new Low Load Application Cycle (LLAC).

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Vorheriges Kapitel Optimal Thermal Management Solutions to Support Ultra-Low NOx Demands of Future in Off-Highway Industry

Nächstes Kapitel Aftertreatment Concepts for Commercial H2 Internal Combustion Engine

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Rauch, H.; Kovács, D.; Rezaei, R.; Strots, V.; Kah, S. and Wille, A.: “Two-Stage SCR Sys-tem for Commercial Vehicle Applications”, 7th International MinNOx Conference, Berlin, Germany, 2018

GT-SUITE „Engine Performance Application Manual“ by Gamma Technologies, Version 2022

Kovács, D., Rezaei, R., Mennig, M., Delebinski, T., Seebode, J. (2022). From Concept to Series: Advanced Development Process for Euro VII Engines. In: Liebl, J. (eds) Heavy-Duty-, On- und Off-Highway-Motoren 2021. Proceedings. Springer Vieweg, Wiesbaden

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Titel: Exhaust Aftertreatment for Future Emission Legislation for Non-Road Vehicles
verfasst von: Jelto Frerichs
Martin Weber
Joseph Dembler
Hubertus Ulmer
Thaddaeus Delebinski
Verlag: Springer Fachmedien Wiesbaden
Buch: Heavy-Duty-, On- und Off-Highway-Motoren 2023
Print ISBN: 978-3-658-46537-7

Electronic ISBN: 978-3-658-46538-4

Copyright-Jahr: 2025
DOI: https://doi.org/10.1007/978-3-658-46538-4_6