This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Tuning of the Engine Control Variables of an Automotive Turbocharged Diesel Engine via Model Based Optimization
Technical Paper
2011-24-0146
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The paper deals with the steady-state optimal tuning of control variables for an automotive turbocharged Diesel engine. The optimization analysis is based on an engine simulation model, composed of a control oriented model of turbocharger integrated with a predictive multi-zone combustion model, which allows accounting for the impact of control variables on engine performance, NOx and soot emissions and turbine outlet temperature. This latter strongly affects conversion efficiency of after treatment devices therefore its estimation is of great interest for both control and simulation of tailpipe emissions.
The proposed modeling structure is aimed to support the engine control design for common-rail turbocharged Diesel engines with multiple injections, where the large number of control parameters requires a large experimental tuning effort. Nevertheless, the complex interaction of injection pattern on combustion process makes black box engine modeling not enough accurate and a more detailed physical model has to be included in the loop. An hybrid modeling approach, composed of black and grey box models is implemented to simulate compressor flow and efficiency maps. The grey box model is used at low engine speeds while the black box model, based on a moving least squares method, provides compressor data at medium- high speed. Both models appear to perform best in their respective area. On the other hand a classical grey box approach is implemented for the turbine, along its overall working range. Compressor and turbine models are implemented in a computational scheme for integration with a predictive multi-zone combustion model that simulates the fuel jet and its interaction with surrounding gases by dividing the jet core into many parcels in order to describe the thermal gradient and the chemical composition within the combustion chamber. The whole engine model allows simulating in-cylinder pressure and temperature, NO and soot emissions as well as turbine outlet temperature, depending on engine control variables (i.e. injection pattern, Exhaust Gas Recirculation - EGR, Variable Geometry Turbine - VGT). Model validation is carried out by comparing simulated in-cylinder pressure trace and exhaust temperature with a wide set of experimental data, measured at the test bench in steady-state conditions on a small automotive Diesel engine. In the paper the overall modeling approach is presented with a detailed description of in-cylinder, compressor and turbine models and the results of the experimental validation vs. measured data are shown. Furthermore, the optimization results over a set of operating points selected among those of interest for the ECE-EUDC test driving cycle are presented and discussed.
Recommended Content
Authors
Topic
Citation
Arsie, I., Criscuolo, I., Pianese, C., and De Cesare, M., "Tuning of the Engine Control Variables of an Automotive Turbocharged Diesel Engine via Model Based Optimization," SAE Technical Paper 2011-24-0146, 2011, https://doi.org/10.4271/2011-24-0146.Also In
References
- Arsie, I. Di Genova, F. Mogavero, A. Pianese, C. Rizzo, G. Caraceni, A. Cioffi, P. Flauti, G. “Multi-Zone Predictive Modeling of Common-Rail Multi-Injection Diesel Engines,” SAE Technical Paper 2006-01-1384 2006 10.4271/2006-01-1384
- Arsie, I. Flora, R. Pianese, C. Rizzo, G. Serra, G. “A Computer Code for S.I. Engine Control and Powertrain Simulation,” SAE Technical Paper 2000-01-0938 2000 10.4271/2000-01-0938
- Arsie, I. Pianese, C. Sorrentino, M. Effects of Control Parameters on Performance and Emissions of HSDI Diesel Engines: Investigation via Two Zone Modelling Oil & Gas Science and Technology - Revue de l'IFP 62 4 457 469 2007
- Assanis, D. N. Heywood, J. B. “Development and Use of a Computer Simulation of the Turbocompounded Diesel System for Engine Performance and Component Heat Transfer Studies,” SAE Technical Paper 860329 1986 10.4271/860329
- Ayoub, N. S. Reitz, R. D. “Multidimensional Computation of Multicomponent Spray Vaporization and Combustion,” SAE Technical Paper 950285 1995 10.4271/950285
- Barba, C. Burkhardt, C. Boulouchos, K. Bargende, M. “A Phenomenological Combustion Model for Heat Release Rate Prediction in High-Speed DI Diesel Engines with Common Rail Injection,” SAE Technical Paper 2000-01-2933 2000 10.4271/2000-01-2933
- Belytschko, T. Lu, Y. Y. Gu, L. Element-free Galerkin methods International journal for numerical methods in Engineering 37 229 256 2004
- Bi, X. Yang, M. Han, S. Ma, Z. A Multi-Zone Model for Diesel Spray Combustion SAE Technical Paper 1999-01-0916 1999 10.4271/1999-01-0916
- Canova, M. Fiorani, P. Gambarotta, A. Tonetti, M. “A Real-Time Model of a Small Turbocharged Multijet Diesel Engine: Application and Validation,” SAE Technical Paper 2005-24-065 2005 10.4271/2005-24-065
- Canova, M. Midlam-Mohler, S. Guezzennec, Y. Rizzoni, G. Mean Value Modeling and Analysis of HCCI Diesel Engines With External Mixture Formation ASME Journal of Dynamic Systems, Measurement, and Control 131 11 2009
- Corcione, F. E. Fusco, A. Valentino, G. Papetti, F. “Numerical and Experimental Analysis of Diesel Air Fuel Mixing,” SAE Technical Paper 931948 1993 10.4271/931948
- Ferguson, C.R. Internal Combustion Engine Applied Thermosciences John Wiley 1986
- Heywood, J.B. Internal Combustion Engine Fundamentals MC Graw Hill 1988
- Hiroyasu, H. Masataka, A. “Structures of Spray in Diesel Engines,” SAE Technical Paper 900475 1990 10.4271/900475
- Hiroyasu, H. Kadota, T. Development and Use of a Spray Combustion Modeling to Predict Diesel Engine Efficiency and Pollutant Emission Bulletin of the ASME 26 214 April 1983
- Jung, D. Assanis, D. N. “Multi-Zone Model DI Spray Combustion Model for Cycle Multi-Zone DI Diesel Spray Combustion Model for Cycle Simulation Studies of Engine performance and Emissions SAE Technical Paper 2001-01-1246 2001 10.4271/2001-01-1246
- Kong, S. C. Han, Z. Reitz, R. D. “The Development and Application of a diesel Ignition and Combustion Model for Multidimensional Engine Simulation,” SAE Technical Paper 950278 1995 10.4271/950278
- Kouremenos, D. A. Rakopoulos, C. D. Hountalas, D. T. “Multi-Zone Combustion Modeling for the Prediction of Pollutant Emissions and Performance of DI Diesel Engine,” SAE Technical Paper 970635 1997 10.4271/970635
- Kuo, K.K. Principles of Combustion John Wiley 1986
- Mueller, M. Hendricks, E. Sorenson, S. “Mean Value Modeling of Turbocharged Spark Ignition Engines,” SAE Technical Paper 980784 1998 10.4271/980784
- Naber, J. D. Siebers, D. L. “Effects of Gas Density and Vaporization on Penetration and Dispersion of Diesel Spray,” SAE Technical Paper 960034 1996 10.4271/960034
- Patterson, M. A. Kong, S. C. Hampson, G. J. Reitz, R. D. “Modeling the Effects of Fuel Injection Characteristics on Diesel Engine Soot and NOx Emissions,” SAE Technical Paper 940523 1994 10.4271/940523
- Poling, B.E. Prausnitz, J.M. O'Connell, J.P. The properties of gases and liquids McGraw-Hill 2001
- Rakopoulos, C. D. Rakopoulos, D. C. Kyritsis, D. C. Development and Validation of a Comprehensive two-zone Model for Combustion and Emissions Formation in a DI Diesel Engine International Journal of Energy Research 27 1221 1249 2003
- Ramos, J.I. Internal Combustion Engine Modeling Hemisphere Publishing Corporation NY 1989
- Shrivastava, R. Hessel, R. Reitz, R. D. CFD Optimization of DI Diesel Engine Performance and Emissions Using Variable Intake Valve Actuation with Boost Pressure, EGR and Multiple Injections,” SAE Technical Paper 2002-01-0959 2002 10.4271/2002-01-0959
- Tanner, F. X. Reitz, R. D. “Scaling Aspects of the Characteristic Time Combustion Model in the Simulation of Diesel Engines,” SAE Technical Paper 1999-01-1175 1999 10.4271/1999-01-1175
- Tirnovan, R. Giurgea, S. Miraoui, A. Cirrincione, M. Surrogate modelling of compressor characteristics for fuel-cell applications Applied Energy 85 394 403 2008