This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Potential of Advanced, Combined Aftertreatment Systems for Light-Duty Diesel Engines to Meet Upcoming EU and US Emission Regulation
Technical Paper
2013-24-0163
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The modern DI-diesel engine represents a valuable platform to achieve worldwide tightened CO2 standards while meeting future strengthened emission regulations in the EU and the US. Due to the simultaneous, partially contrary legal demands, new integrated and combined systems are required to allow best overall performance within the upcoming legal frames concerning pollutant emission reduction and minimization of CO2 output. As extended emission relevant areas in the engine map have to be respected in view of RDE and PEMS scenarios in EU, but also facing the LEVIII standards in the US, comprehensive and synchronized technical solutions have to be engineered. Based on furthermore optimized combustion systems with improved combustion efficiency, meaning also lowered exhaust gas temperatures, especially refined and tailored emission control systems are demanded. Besides possible realizations regarding integrated DPF and SCR (SDPF) functionalities on one substrate, also the combination with advanced LNT technology features beneficial aspects. To point out benefits and challenges of combined systems with relatively low complexity a simulative study was performed in this paper. For the European market conventional SCR as well as alternative SDPF concepts have been comparatively investigated for a 2.0L Diesel engine in WLTP cycle. It is shown that SDPF shows an improved thermal behaviour in comparison to the SCR based EAS layout. This is due to lower overall thermal mass within EAS, which leads to increased Nox conversion efficiency. However, a significant amount of required conversion efficiency can only be gained by catalyst heating measures. For the US market the application of a Passive NOx Adsorber (PNA) in combination with conventional SCR was studied for a 3.0L Diesel engine in FTP cycle. The simulation results point out that the PNA is in principle a valuable technology improving the NOx aftertreatment. However, the intended task of the PNA buffering NOx at cold start is only sufficient in case of low initial PNA NOx load at engine start. Therefore a somehow active operation of the PNA is required resulting in increased control logic algorithms and fuel economy penalty.
Recommended Content
Authors
Topic
Citation
Körfer, T., "Potential of Advanced, Combined Aftertreatment Systems for Light-Duty Diesel Engines to Meet Upcoming EU and US Emission Regulation," SAE Technical Paper 2013-24-0163, 2013, https://doi.org/10.4271/2013-24-0163.Also In
References
- Integrated Diesel engines concept for lowest CO2-emission requirements Kolbeck A. , Lamping M. , Körfer Th. FEV GmbH 19th Aachen Colloquium 2010 Aachen Oct. 2010
- Advanced thermal management for modern Diesel engines - Optimized Synergy between engine hardware and software intelligence Severin C. , Busch H. , Kolbeck A. , Körfer Th. FEV GmbH ASME Conference 2012 May 2012
- Case study: low temperature SCR application and its performance Sliwinski B. , Severin C. , Kolbeck A. Wiartalla A. , Körfer Th. FEV GmbH 7th DIESEL EMISSIONS CONFERENCE EUROPE 2011 Düsseldorf June 2011
- Exhaust temperature management for Diesel engines - Assessment of engine concepts and calibration strategies with regard to fuel penalty Severin C. , Busch H. , Kolbeck A. , Körfer Th. , FEV GmbH, Honardar Sh. VKA RWTH Aachen NSAE 2011 10th Int'l Conference on Engines&Vehicles Capri Sept 2011
- Comprehensive Application of Advanced SCR Systems - Optimized Tool Chains from Layout to Calibration SCR Conference 2012 Körfer Th. , Kolbeck A. , Holderbaum B. , Lüers B. , Flecke Th. , Rupp M. FEV GmbH SCR Conference 2012 Stuttgart Sept. 2012
- Automotive Diesels facing the challenge of future emissions standards Körfer Th. , Kolbeck A. , Holderbaum B. ATA Conference 2012 Torino Nov. 2012
- Comprehensive Layout and Calibration Approach at the Example of SCR- and SCRF-Systems CTI Conference 2013 Holderbaum B. , Kolbeck A. , Körfer Th. FEV GmbH Stuttgart January 2013
- Parallel Optimization of Engine-Out and Tailpipe Emissions via FEV TOPexpert Kinoo B. , Flecke Th. , Schlosser A. et. Al. FEV GmbH Virtual Powertrain Creation Conference 2011 Munich
- Bhardwaj , O. , Holderbaum , B. , Kolbeck , A. , Körfer , T. , Lüers , B. Innovative, combined systems with SCRfor upcoming stringent emission standards in US and EU 13. InternationalesStuttgarter Symposium Automobil- und Motorentechnik 2013
- Ruth , M. ATP-LD; Cummins Next Generation Tier 2 Bin 2 Diesel Engine DEER congress May 18 th 2012