This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Effect of Charge Non-uniformity on Heat Release and Emissions in PCCI Engine Combustion
Technical Paper
2006-01-1363
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Homogeneous Charge Compression Ignition (HCCI) engines are currently of great interest as a future alternative to Diesel and Spark Ignition engines because of HCCI's potential to achieve high efficiency with very low NOx emissions. However, significant technical barriers remain to practical implementation of HCCI engines: difficult-to-control combustion, low power density, rapid pressure rise, and high hydrocarbon and carbon monoxide emissions. To overcome some of these barriers, operational strategies that involve relaxing the constraint of truly “homogeneous” HCCI combustion have been studied. The phrase “Premixed Charge Compression Ignition” or “PCCI” combustion can be used to describe this class of combustion processes, in which combustion occurs similarly to HCCI engines as a non-mixing controlled, chemical kinetics dominated, auto-ignition process, but the fuel, air, and residual gas mixture need not be homogeneous.
This paper presents analysis of the effect of charge non-uniformity upon combustion in PCCI engines. The analysis is conducted using a numerical approach for simulation of PCCI that utilizes a fully-coupled combination of multi-dimensional computational fluid mechanics with a multi-zone detailed chemical kinetics solver. Baseline simulations have been validated against HCCI experiments with isooctane fuel. Further simulations have been conducted to assess the effect of charge non-uniformity on the heat release and emissions for PCCI operation. The results show that charge non-uniformity used in the PCCI strategy may sometimes have a beneficial effect of reducing carbon monoxide and hydrocarbon emissions. However, charge non-uniformity within the combustion chamber has the potential to increase NOx emissions.
Recommended Content
Authors
Topic
Citation
Flowers, D., Aceves, S., and Babajimopoulos, A., "Effect of Charge Non-uniformity on Heat Release and Emissions in PCCI Engine Combustion," SAE Technical Paper 2006-01-1363, 2006, https://doi.org/10.4271/2006-01-1363.Also In
Homogeneous Charge Compression Ignition (HCCI) Combustion 2006
Number: SP-2005; Published: 2006-04-03
Number: SP-2005; Published: 2006-04-03
References
- Najt, P. M. Foster, D. E. Compression-Ignited Homogeneous Charge Combustion SAE Paper 830264 1983
- Thring, R. H. Homogeneous-Charge Compression-Ignition (HCCI) Engines SAE Paper 892068 1989
- Christensen, M. Johansson, B. Einewall, P. Homogeneous Charge Compression Ignition (HCCI) Using Isooctane, Ethanol and Natural Gas - A Comparison with Spark Ignition Operation SAE Paper 972874 1997
- Willand, J. Nieberding, R.-G. Vent, G. Enderle, C. The Knocking Syndrome: Its Cure and Potential SAE Paper 982483 1998
- Marriot, C. D. Reitz, R. D. Experimental Investigation of Direct Injection-Gasoline for Premixed Compression Ignited Combustion Phasing Control SAE Paper 2002-01-0418 2002
- Kontarakis, G. Collings, N. Ma, T. Demonstration of HCCI Using a Single-Cylinder, Four-Stroke SI Engine with Modified Valve Timing SAE Paper 2000-01-2870 2000
- Kaahaaina, N. B. Simon, A. J. Caton, P. A. Edwards, C. F. Use of Dynamic Valving to Achieve Residual-Affected Combustion SAE Paper 2001-01-0549 2001
- Law, D. Kemp, D. Allen, J. Kirkpatrick, G. Copland, T. Controlled Combustion in an IC-Engine with a Fully Variable Valve Train SAE Paper 2001-01-0251 2001
- Koopmans, L. Denbratt, I. A Four Stroke Camless Engine, Operated in Homogeneous Charge Compression Ignition Mode with Commercial Gasoline SAE Paper 2001-01-3610 2001
- Dec, J. E. Sjöberg, M. A Parametric Study of HCCI Combustion - the Sources of Emissions at Low Loads and the Effects of GDI Fuel Injection SAE Paper 2003-01-0752 2003
- Grenda, J. M. Numerical Modeling of Charge Stratification for the Combustion Control of HCCI Engines SAE Paper 2005-01-3722 2005
- Aceves, S. M. Flowers, D. L. Westbrook, C. K. Smith, J. R. Pitz, W. Dibble, R. Christensen, M. Johansson, B. A Multi-Zone Model for Prediction of HCCI Combustion and Emissions SAE Paper 2000-01-0327 2000
- Aceves, S. M. Flowers, D. L. Martinez-Frias, J. Smith, J. R. Westbrook, C. K. Pitz, W. J. Dibble, R. Wright, J. F. Akinyemi, W. C. Hessel, R. P. A Sequential Fluid-Mechanic Chemical-Kinetic Model of Propane HCCI Combustion SAE Paper 2001-01-1027 2001
- Aceves, S. M. Martinez-Frias, J. Flowers, D. L. Smith, J. R. Dibble, R. W. Wright, J. F. Hessel, R. P. A Decoupled Model of Detailed Fluid Mechanics Followed by Detailed Chemical Kinetics for Prediction of iso-Octane HCCI Combustion SAE Paper 2001-01-3612 2001
- Flowers, D. Aceves, S. Martinez-Frias, J. Hessel, R. Dibble, R. Effect of Mixing on Hydrocarbon and Carbon Monoxide Emissions Prediction for Isooctane HCCI Engine Combustion Using a Multi-zone Detailed Kinetics Solver SAE Paper 2003-01-1821 2003
- Flowers, D. Aceves, S. Smith, R. Torres, J. Girard, J. Dibble, R. HCCI in a CFR Engine: Experiments and Detailed Kinetic Modeling SAE Paper 2000-01-0328 2000
- Aceves, S. M. Flowers, D. L. Espinosa-Loza, F. Martinez-Frias, J. Dibble, R. W. Christensen, M. Johansson, B. Hessel, R. P. Piston-Liner Crevice Geometry Effect on HCCI Combustion by Multi-Zone Analysis SAE Paper 2002-01-2869 2002
- Babajimopoulos, A. Lavoie, G. A. Assanis, D. N. Modeling HCCI Combustion with High Levels of Residual Gas Fraction - A Comparison of Two VVA Strategies SAE Paper 2003-01-3220 2003
- Aceves, S. M. Flowers, D. L. Espinosa-Loza F.J. Martinez-Frias, J. Dec, J. E. Sjöberg, M. Dibble, R. W. Hessel R. P. Spatial Analysis of Emissions Sources for HCCI Combustion at Low Loads Using a Multi-Zone Model SAE Paper 2004-01-1910 2004
- Aceves, S. M. Flowers, D. L. Espinosa-Loza, F. Babajimopoulos, A. Assanis, D. N. Analysis of Premixed Charge Compression Ignition Combustion with a Sequential Fluid Mechanics-Multizone Chemical Kinetics Model SAE Paper 2005-01-0115 2005
- 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
- Babajimopoulos, A. Flowers, D. L. Assanis, D. N. Aceves, S. M. Hessel, R. P. A Fully Coupled Computational Fluid Dynamics and Multi-zone Model with Detailed Chemical Kinetics for the Simulation of Premixed Charge Compression Ignition Engines International Journal of Engine Research 6 5 497 512 2005
- Dec, J.E. Sjöberg, M. A Parametric Study of HCCI Combustion - the Sources of Emissions at Low Loads and the Effects of GDI Fuel Injection SAE Paper 2003-01-0752 2003
- Aceves, S. M. Martinez-Frias, J. Flowers, D. L. Smith, J. R. Dibble, R. W. Chen, J. Y. A Computer-Generated Reduced Iso-Octane Chemical Kinetic Mechanism Applied to Simulation of HCCI Combustion SAE Paper 2002-01-2870 2002
- Warnatz, J. Maas, U. Dibble, R.W. Combustion: Physical and Chemical Fundamentals, Modeling and Simulation, Experiments, Pollutant Formation , Berlin Springer 3rd 2001