Abstract
Controls of integrated gasoline engine and aftertreatment systems are critical for fuel efficiency improvement and emission regulation. This paper aims to develop novel model-based three-way catalytic converter (TWC) controls to reduce the fuel consumption and tailpipe emissions for a gasoline engine. A model-based dither control and a nonlinear model predictive control (MPC)-based control are presented, respectively. The proposed TWC dither control utilizes a systematically designed dither cycle configuration (including dithering amplitude, offset, and frequency) based on a control-oriented model, with the capability to adapt the dither cycle configuration to various engine operating conditions. The MPC control can optimize engine air–fuel ratio (AFR) to maintain the oxygen storage of TWC at a desired level and thus meet the tailpipe NOx, CO, and HC emission requirements. The efficacies of both model-based TWC controls are validated in simulation with MPC control improving CO emission conversion efficiencies by 8.42% and 4.85% in simplified US06 and urban dynamometer driving schedule (UDDS) driving cycles, when compared to a baseline dithering-based AFR control. Meanwhile, NOx emission conversion efficiency is maintained above the required limit of 95%, while the fuel efficiency remains at the same level as the baseline control methodology.
Issue Section:
Research Papers
References
1.
Postma
,
M.
, and
Nagamune
,
R.
, 2011
, “
Air-Fuel Ratio Control of Spark Ignition Engines Using a Switching LPV Controller
,” IEEE Trans. Control Syst. Technol.
,
20
(5
), pp. 1175
–1187
.10.1109/TCST.2011.21639372.
Koltsakis
,
G. C.
, and
Stamatelos
,
A. M.
, 1999
, “
Modeling Dynamic Phenomena in 3-Way Catalytic Converters
,” Chem. Eng. Sci.
,
54
(20
), pp. 4567
–4578
.10.1016/S0009-2509(99)00130-X3.
U.S. Energy Information Administration
, 2016
, “
Monthly Energy Review
,” U.S. Department of Energy, Washington, DC, Report No. DOE/EIA-0035.4.
U.S. Environmental Protection Agency
, 2016
, “
Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990–2014
,” U.S. Environmental Protection Agency, Washington, DC, Report No. EPA 430-R-16-002
. https://www.epa.gov/ghgemissions/inventory-us-greenhouse-gas-emissions-and-sinks-1990-20145.
Manzie
,
C.
,
Palaniswami
,
M.
, and
Ralph
,
D.
, 2002
, “
Model Predictive Control of a Fuel Injection System With a Radial Basis Function Network Observer
,” ASME J. Dyn. Syst., Meas., Control
,
124
(4
), pp. 648
–658
.10.1115/1.15153286.
Ebrahimi
,
B.
,
Tafreshi
,
R.
, and
Masudi
,
H.
, 2012
, “
A Parameter-Varying Filtered PID Strategy for Air–Fuel Ratio Control of Spark Ignition Engines
,” Control Eng. Pract.
,
20
(8
), pp. 805
–815
.10.1016/j.conengprac.2012.04.0017.
Choi
,
S. B.
, and
Hedrick
,
J. K.
, 1998
, “
An Observer-Based Controller Design Method for Improving Air/Fuel Characteristics of Spark Ignition Engines
,” IEEE Trans. Control Syst. Technol.
,
6
(3
), pp. 325
–334
.10.1109/87.6680348.
Pieper
,
J. K.
, and
Mehrotra
,
R.
, 1999
, “
Air/Fuel Ratio Control Using Sliding Mode Methods
,” Proceedings of the American Control Conference
,
IEEE
, Vol.
2
, San Diego, CA, June 2–4, pp. 1027
–1031
.10.1109/ACC.1999.7831969.
Souder
,
J. S.
, and
Hedrick
,
J. K.
, 2004
, “
Adaptive Sliding Mode Control of Air–Fuel Ratio in Internal Combustion Engines
,” Int. J. Robust Nonlinear Control
,
14
(6
), pp. 525
–541
.10.1002/rnc.90110.
Kahveci
,
N. E.
, and
Jankovic
,
M. J.
, 2010
, “
Adaptive Controller With Delay Compensation for Air-Fuel Ratio Regulation in SI Engines
,” Proceedings of the American Control Conference
,
IEEE
, Baltimore, MD, June 30–July 2, pp. 2236
–2241
.10.1109/ACC.2010.553052511.
Zhai
,
Y.
, and
Yu
,
D.
, 2007
, “
A Neural Network Model Based MPC of Engine AFR With Single-Dimensional Optimization
,” International Symposium on Neural Networks
, Nanjing, China, June 3–7, Springer, Berlin, pp. 339
–348
.10.1007/978-3-540-72383-7_4012.
Zope
,
R. A.
,
Mohammadpour
,
J.
, and
Grigoriadis
,
K. M.
, 2009
, “
Air-Fuel Ratio Control of Spark Ignition Engines With TWC Using LPV Techniques
,” ASME
Paper No. DSCC2009-2704.10.1115/DSCC2009-270413.
Ghaffari
,
A.
,
Shamekhi
,
A. H.
, and
Saki
,
A.
, 2008
, “
Adaptive Fuzzy Control for Air-Fuel Ratio of Automobile Spark Ignition Engine
,” World Acad. Sci., Eng. Technol.
,
48
, pp. 284
–292
. https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.307.9526&rep=rep1&type=pdf14.
Franceschi, E. M., Muske, K. R., and Jones, J. C. P., 2007, “An Adaptive Delay-Compensated PID Air Fuel Ratio Controller,”
SAE Trans.
, 116, pp. 888–894.http://www.jstor.org/stable/4469932315.
Shi
,
X.
,
Seiser
,
R.
, and
Chen
,
J.
, 2015
, “
Fuel-Dithering Optimization of Efficiency of TWC on Natural Gas IC Engine
,” SAE Int. J. Engines
,
8
(3
), pp. 1246
–1252
.10.4271/2015-01-104316.
Trimboli
,
S.
,
Di Cairano
,
S.
, and
Bemporad
,
A.
, 2012
, Time Delay Systems: Methods, Applications and New Trends
,
Springer
, Berlin, pp. 319
–330
.17.
Wang
,
S. W.
,
Yu
,
D. L.
, and
Gomm
,
J. B.
, 2006
, “
Adaptive Neural Network Model Based Predictive Control for Air–Fuel Ratio of SI Engines
,” Eng. Appl. Artif. Intell.
,
19
(2
), pp. 189
–200
.10.1016/j.engappai.2005.08.00518.
Hu
,
Y.
,
Fan
,
Y.
, and
Liang
,
Y.
, 2014
, “
Data-Driven Model Predictive Control of Air-Fuel Ratio for PFISI Engine
,” 11th World Congress on Intelligent Control and Automation
,
IEEE
, Shenyang, China, June 29–July 4, pp. 4577
–4582
. 10.1109/WCICA.2014.705348519.
Brandt
,
E. P.
,
Wang
,
Y.
, and
Grizzle
,
J. W.
, 2000
, “
Dynamic Modeling of a Three-Way Catalyst for SI Engine Exhaust Emission Control
,” IEEE Trans. Control Syst. Technol.
,
8
(5
), pp. 767
–776
.10.1109/87.86585020.
Desantes
,
J.
,
Guardiola
,
C.
,
Pla
,
B.
, and
Real
,
M.
, 2018
, “
Oxygen Catalyst Depletion Strategy Based on TWC Control-Oriented Modelling
,” IFAC-PapersOnLine
,
51
(31
), pp. 355
–361
.10.1016/j.ifacol.2018.10.07321.
Soumelidis
,
M.
,
Stobart
,
R.
, and
Jackson
,
R.
, 2007
, “
A Chemically Informed, Control-Oriented Model of a Three-Way Catalytic Converter
,” Proc. Inst. Mech. Eng., Part D
,
221
(9
), pp. 1169
–1182
.10.1243/09544070JAUTO25922.
Sabatini
,
S.
,
Gelmini
,
S.
, and
Hoffman
,
M. A.
, 2017
, “
Design and Experimental Validation of a Physics-Based Oxygen Storage—Thermal Model for Three Way Catalyst Including Aging
,” Control Eng. Pract.
,
68
, pp. 89
–101
.10.1016/j.conengprac.2017.07.00723.
Johnson
,
T. V.
, and
Joshi
,
A.
, 2018
, “
Chapter 1: Review of deNOx Technology for Mobile Applications
,” NOx Trap Catalysts and Technologies: Fundamentals and Industrial Applications
, The Royal Society of Chemistry, London, UK, pp. 1
–35
.24.
Kaneko
,
Y.
,
Kobayashi
,
H.
, and
Komagome
,
R.
, 1978
, “
Effect of Air-Fuel Ratio Modulation on Conversion Efficiency of Three-Way Catalysts
,” SAE Trans.
,
87
, pp. 2225
–2233
. https://www.jstor.org/stable/4463254725.
Eriksson
,
L.
, and
Nielsen
,
L.
, 2014
, Modeling and Control of Engines and Drivelines
,
Wiley
, Chichester, UK.26.
Heywood
,
J. B.
, 1988
, Combustion Engine Fundamentals
, 1st ed., McGraw-Hill Education, New York.27.
Meyer
,
J.
,
Yurkovich
,
S.
, and
Midlam-Mohler
,
S.
, 2012
, “
Air-to-Fuel Ratio Switching Frequency Control for Gasoline Engines
,” IEEE Trans. Control Syst. Technol.
,
21
(3
), pp. 636
–648
.10.1109/TCST.2012.218863128.
Auckenthaler
,
T. S.
,
Onder
,
C. H.
, and
Geering
,
H. P.
, 2004
, “
Online Estimation of the Oxygen Storage Level of a Three-Way Catalyst
,” SAE
Paper No. 2004-01-0525.10.4271/2004-01-052529.
Muske
,
K. R.
, and
Jones
,
J. C. P.
, 2004
, “
Estimating the Oxygen Storage Level of a Three-Way Automotive Catalyst
,” Proceedings of the American Control Conference
,
IEEE
, Vol.
5
, Boston, MA, June 30–July 2, pp. 4060
–4065
.10.23919/ACC.2004.138394430.
Henson
,
M. A.
, 1998
, “
Nonlinear Model Predictive Control: Current Status and Future Directions
,” Comput. Chem. Eng.
,
23
(2
), pp. 187
–202
.10.1016/S0098-1354(98)00260-931.
Chen
,
P.
, and
Wang
,
J.
, 2015
, “
Nonlinear Model Predictive Control of Integrated Diesel Engine and Selective Catalytic Reduction System for Simultaneous Fuel Economy Improvement and Emissions Reduction
,” ASME J. Dyn. Syst., Meas., Control
,
137
(8
), p. 081008
.10.1115/1.403025232.
Dettu
,
F.
, and
Onori
,
S.
, 2021
, “
On Rigorous Model-Order Reduction of the Thermal and Oxygen Storage Dynamics of Three Way Catalytic Converters
,” ASME J. Dyn. Syst., Meas., Control
,
143
(3
), p. 031002
.10.1115/1.404835933.
Lin
,
Q.
,
Chen
,
P.
, and
Prikhodko
,
V. Y.
, 2019
, “
Experimental Study and Model Predictive Control of a Lean-Burn Gasoline Engine Coupled With a Passive Selective Catalytic Reduction System
,” ASME J. Dyn. Syst., Meas., Control
,
141
(9
), p. 091008
.10.1115/1.404326934.
Chen
,
P.
, and
Wang
,
J.
, 2015
, “
Coordinated Active Thermal Management and Selective Catalytic Reduction Control for Simultaneous Fuel Economy Improvement and Emissions Reduction During Low-Temperature Operations
,” ASME J. Dyn. Syst., Meas., Control
,
137
(12
), p. 121001
.10.1115/1.403113335.
Fiengo
,
G.
,
Cook
,
J. A.
, and
Grizzle
,
J. W.
, 2002
, “
Fore-Aft Oxygen Storage Control
,” Proceedings of the American Control Conference
,
IEEE
, Vol.
2
, Anchorage, AK, May 8–10, pp. 1401
–1406
.10.1109/ACC.2002.102321736.
Ngo
,
C.
,
Koenig
,
D.
,
Sename
,
O.
, and
Béchart
,
H.
, 2013
, “
A Reduced Model of Three Ways Catalyst Converter and Stored Oxygen Rate Estimation Using Switched Observer
,” European Control Conference (ECC
), Zurich, Switzerland, July 17–19, pp. 3718
–3723
.10.23919/ECC.2013.666975437.
Fiengo
,
G.
,
Grizzle
,
J. W.
,
Cook
,
J. A.
, and
Karnik
,
A. Y.
, 2005
, “
Dual-UEGO Active Catalyst Control for Emissions Reduction: Design and Experimental Validation
,” IEEE Trans. Control Syst. Technol.
,
13
(5
), pp. 722
–736
.10.1109/TCST.2005.85432638.
Baran
,
M.
, 2015
, “
Stationary Engine Emission Controls & A/F Controller/Remote Control
,” Johnson Matthey Stationary Emissions Control, Harrisburg, PA, accessed Sept. 23, 2015, https://cdn.ymaws.com/www.icac.com/resource/resmgr/PA_DEP/Johnson_Matthey_Stationary_E.pdf39.
Chambon
,
P.
,
Huff
,
S.
, and
Norman
,
K.
, 2011
, “
European Lean Gasoline Direct Injection Vehicle Benchmark
,” SAE
Paper No. 2011-01-1218.10.4271/2011-01-121840.
Lin
,
Q.
,
Chen
,
P.
, and
Prikhodko
,
V. Y.
, 2017
, “
Model Predictive Control of a Lean-Burn Gasoline Engine Coupled With a Passive Selective Catalytic Reduction System
,” ASME
Paper No. DSCC2017-5348.10.1115/DSCC2017-534841.
Bemporad
,
A.
, and
Morari
,
M.
, 1999
, Robustness in Identification and Control
,
Springer
, Turin, Italy, pp. 207
–226
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