This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Performance Optimization of Diesel Engines with Variable Intake Valve Timing Via Genetic Algorithms
Technical Paper
2005-01-0374
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The strategy of variable Intake Valve Closure (IVC) timing, as a means to improve performance and emission characteristics, has gained much acceptance in gasoline engines; yet, it has not been explored extensively in diesel engines. In this study, genetic algorithms are used in conjunction with the multi-dimensional engine simulation code KIVA-3V to investigate the optimum operating variables for a typical heavy-duty diesel engine working with late IVC. The effects of start-of-injection timing, injection duration and exhaust gas recirculation were investigated along with the intake valve closure timing. The results show that appreciable reductions in NOx+HC (∼82%), soot (∼48%) and BSFC (∼7.4%) are possible through this strategy, as compared to a baseline diesel case of (NOx+HC) = 9.48g/kW-hr, soot = 0.17 g/kW-hr and BSFC = 204 g-f/kW-hr. The additional consideration of double injections helps to reduce the high rates of pressure rise observed in a single injection scheme. In this context, an illustration of a modified prioritization of the emission targets in optimization studies, which may be crucial to attaining aggressive emission standards, is also provided. This study provides a direction for heavy-duty diesel engines to meet future stringent emission mandates.
Recommended Content
Authors
Topic
Citation
Munnannur, A., Kong, S., and Reitz, R., "Performance Optimization of Diesel Engines with Variable Intake Valve Timing Via Genetic Algorithms," SAE Technical Paper 2005-01-0374, 2005, https://doi.org/10.4271/2005-01-0374.Also In
References
- Emission Standards: USA Heavy-Duty Truck and Bus Engines http://www.dieselnet.com/standards/us/hd.html
- Miller, R.H. “Supercharging and Internal Cooling cycle for High Output” ASME Transactions 69 453 1946
- Tuttle, J. H. “Controlling Engine Load by Means of Late Intake Valve Closing” SAE 800794 1980
- Clarke, D. Smith, W. J. “The Simulation, Implementation and Analysis of the Miller Cycle Using an Inlet Control Rotary Valve” SAE 970336 1997
- Li, L. Tao, J. Wang, Y. Su, Y. Xiao, M. “Effects of Intake Valve Closing Timing on Gasoline Engine Performance and Emissions” SAE 2001-01-3564 2001
- Zalzala, A. M. S. Fleming, P. J. Genetic Algorithms in Engineering Systems The Institution of Electrical Engineers London, UK 1997
- Senecal, P. K. Montgomery, D. T. Reitz, R. D. “A Methodology for Engine Design Using Multi-Dimensional Modelling and Genetic Algorithms with Validation through Experiments” Intl J. of Engine Research 1 3 229 2000
- Senecal, P. K. “Development of a Methodology for Internal Combustion Engine Design using Multi-Dimensional Modeling with Validation through Experiments” University of Wisconsin-Madison 2000
- Thiel, M. P. “Application of Automated Experiments to the Optimization of a Heavy-Duty Direct Injected Diesel Engine for the Simultaneous Reduction of NOx and Particulate Emissions” University of Wisconsin-Madison 2001
- Montgomery, D. T. Reitz R. D. “Six-Mode Cycle Evaluation of the Effect of EGR and Multiple Injections on Particulate and NOx Emissions from a D.I. Diesel Engine” SAE 960136 1996
- Amsden A. A. “KIVA-3V: a block-structured KIVA program for engines with vertical or canted valves” Los Alamos National Laboratory Report LA-13313-MS 1997
- Wickman, D. D. “HSDI Diesel Engine Combustion Chamber Geometry Optimization” University of Wisconsin-Madison 2003
- Goldberg, D. E. Genetic Algorithms in Search, Optimization, and Machine Learning Addison-Wesley 1989
- Greenlagh, D. Marshall, S. “Convergence Criteria for Genetic Algorithms” SIAM J. Comput. 30 1 269 2000
- Hwang, W-J. Hong, S-L. “Genetic entropy constrained vector quantizer design algorithm” Opt. Eng. 38 2 233 1999
- Zhu, Y. Reitz, R. D. “A 1-D Gas Dynamic Code for Subsonic and Supersonic Flows Applied to Predict EGR Levels in a Heavy-Duty Diesel Engine” Int. J. Veh. Des. 22 227 1999
- Klingbeil, A. E. Juneja, H. Ra, Y. Reitz, R.D. “Premixed Diesel Combustion Analysis in a Heavy-Duty Diesel Engine” SAE 2003-01-0341 2003
- Miles, P.C. Choi, D. Pickett, L.M. Singh, I.P. Henein, N. RempleEwert, B.,A. Yun, H. Reitz R.D. “Rate-limiting Processes in Late-Injection, Low-Temperature Diesel Combustion Regimes” THIESEL 2004 Conference on Thermo- and Fluid Dynamic Processes in Diesel Engines Valencia, Spain Sep. 7-10 2004
- Christenson, M. Johansson, B. Amnéus, P. Mauss, F. “Supercharged Homogeneous Charge Compression Ignition” SAE 980787 1998
- Eng, J. A. “Characterization of Pressure Waves in HCCI Combustion” SAE 2002-01-2859 2002
- Weber, A. J. Caterpillar Inc. personal communication 2004
- Montgomery, D. T. Reitz R. D. “Effects of Multiple Injections and Flexible Control of Boost and EGR on Emissions and Fuel Consumption of a Heavy-Duty Diesel Engine” SAE 2001-01-0195 2001