This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Dynamic Two-Zone NOx Emission Simulation in Diesel Engine Hardware-in-the-Loop Applications
Technical Paper
2016-01-8083
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Increasing diagnosis capabilities in modern engine electronic control units (ECUs), especially in the exhaust path, in terms of emission and engine aftertreatment control utilize on-board NOx prediction models. Nowadays it is an established approach at hardware-in-theloop (HIL) test benches to replicate the engine's steady-state NOx emissions on the basis of stationary engine data. However, this method might be unsuitable for internal ECU plausibility checks and ECU test conditions based on dynamic engine operations.
Examples of proven methods for modeling the engine behavior in HIL system applications are so-called mean value engine models (MVEMs) and crank-angle-synchronous (in-cylinder) models. Of these two, only the in-cylinder model replicates the engine’s inner combustion process at each time step and can therefore be used for chemical-based emission simulation, because the formation of the relevant gas species is caused by the inner combustion states. Incylinder models in HIL systems must respect the real-time criterion in addition to the computational effort of the electrical input/output signals of the HIL system. In order to meet these timing conditions, a zero-dimensional single-zone approach is currently widely being used and acknowledged.
This paper will introduce a real-time-capable two-zone NOx model approach. The model is capable of replicating the dynamic behavior of the emissions, preparing for modern ECU algorithms and dynamic emission test procedures. Furthermore, it can be used as an extension to a common single-zone in-cylinder approach, yielding the simulation accuracy and robustness typical for HIL applications together with the capability for simulating emission output. By focusing on the hard real-time conditions together with the required parameterization and validation procedures, the paper will emphasize the applicability in closed-loop HIL projects.
Recommended Content
Authors
Topic
Citation
Doering, H., Meyer, N., and Wiedemeier, M., "Dynamic Two-Zone NOx Emission Simulation in Diesel Engine Hardware-in-the-Loop Applications," SAE Technical Paper 2016-01-8083, 2016, https://doi.org/10.4271/2016-01-8083.Also In
References
- Barro , C. , Obrecht , P. , Lauer , P. , Boulouchos , K. Entwicklung eines virtuellen Russsensors für Dieselmotoren MTZ 75 6 60 67 2014
- Ericson , C. , Westerberg , B. , Andersson , M. , and Egnell , R. Modelling Diesel Engine Combustion and NOx Formation for Model Based Control and Simulation of Engine and Exhaust Aftertreatment Systems SAE Technical Paper 2006-01-0687 2006 10.4271/2006-01-0687
- Wilhelmsson , C. , Tunestål , P. , Widd , B. , and Johansson , R. A Physical Two-Zone NOx Model Intended for Embedded Implementation SAE Technical Paper 2009-01-1509 2009 10.4271/2009-01-1509
- Molina , S. , Guardiola , C. , Martín , J. , and García-Sarmiento , D. Development of a control-oriented model to optimise fuel consumption and NOX emissions in a DI Diesel engine Applied Energy 119 405 416 2014
- Greve , M. NOx control with cylinder pressure based engine control systems MTZ industrial 4 2 44 53 2014
- Tschanz , F. , Amstutz , A. , Steuer , J. , and Guzzella , L. Regelung der Schadstoffemissionen von Dieselmotoren MTZ 75 2 80 86 2014
- Quérel , C. , Grondin , O. , and Letellier , C. Semi-physical mean-value NOx model for diesel engine control Control Engineering Practice 40 27 44 2015
- Kihas , D. and Uchanski , M. Engine-Out NOx Models for on-ECU Implementation: A Brief Overview SAE Technical Paper 2015-01-1638 2015 10.4271/2015-01-1638
- Schuette , H. and Ploeger , M. Hardware-in-the-Loop Testing of Engine Control Units - A Technical Survey SAE Technical Paper 2007-01-0500 2007 10.4271/2007-01-0500
- Schulze , T. , Wiedemeier , M. , and Schuette , H. Crank Angle - Based Diesel Engine Modeling for Hardware-in-the-Loop Applications with In-Cylinder Pressure Sensors SAE Technical Paper 2007-01-1303 2007 10.4271/2007-01-1303
- Pischinger , R. , Klell , M. , and Sams , T. Thermodynamik der Verbrennungskraftmaschine Wien Springer 2002 3-211-83679-9
- Pattas , K. , and Häfner , G. Stickoxidbildung bei der ottomotorischen Verbrennung MTZ 34 12 397 404 1973
- Heywood , J.B. Internal Combustion Engine Fundamentals New York McGraw-Hill 1988 0-07-100499-8
- Heider , G. Rechenmodell zur Vorausrechnung der NOEmission von Dieselmotoren Ph.D. thesis Fakultät für Maschinenwesen, Technische Universität München München 1996
- Heider , G. , Woschni , G. , and Zeilinger , K. 2-Zonen Rechenmodell zur Vorausrechnung der NO-Emission von Dieselmotoren MTZ 59 11 770 775 1998
- Merker , G.P. , Schwarz , C. , Stiesch , G. , and Otto , F. Verbrennungsmotoren. Simulation der Verbrennung und Schadstoffbildung Stuttgart Teubner 2004 3-519-16382-9
- Hohlbaum , B. Beitrag zur rechnerischen Untersuchung der Stickstoffoxid-Bildung schnellaufender Hochleistungsdieselmotoren Ph.D. thesis Fakultät für Chemieingenieurwesen, Universität Fridericiana Karlsruhe Karlsruhe 1992
- Torkzadeh , D.D. Echtzeitsimulation der Verbrennung und modellbasierte Reglersynthese am Common-Rail-Dieselmotor Berlin Logos 2003 3-8325-0163-0
- Held , J. Ein Modell zur thermodynamischen Analyse eines Ottomotors bei stationärem und instationärem Betrieb Düsseldorf VDI 1988 3-18-140312-1
- Woschni , G. , and Fieger , J. Experimentelle Bestimmung des örtlich gemittelten Wärmeübergangskoeffizienten im Ottomotor MTZ 42 6 229 234 1981
- Andersson , M. , Johansson , B. , Hultqvist , A. , and Nöhre , C. A Real Time NOx Model for Conventional and Partially Premixed Diesel Combustion SAE Technical Paper 2006-01-0195 2006 10.4271/2006-01-0195
- Püschl , T. , Schulze , T. , and Schütte , H. Parameter Estimation for In-Cylinder Pressure-Based Real-Time Engine Models 9. Internationales Stuttgarter Symposium Automobil- und Motorentechnik 2015