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Cylinder-to-Cylinder and Cycle-to-Cycle Variations at HCCI Operation With Trapped Residuals
Technical Paper
2005-01-0130
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A naturally aspirated in-line six-cylinder 2.9-litre Volvo engine is operated in Homogeneous Charge Compression Ignition (HCCI) mode, using camshafts with low lift and short duration generating negative valve overlap. Standard port fuel injection is used and pistons and cylinder head are unchanged from the automotive application.
HCCI through negative valve overlap is recognized as one of the possible implementation strategies of HCCI closest to production. It is important to gain knowledge of the constraints and limits on the possible operating region. In this work, the emphasis is on investigating how cycle-to-cycle and cylinder-to-cylinder deviations limit the operating region, how these effects change in different parts of the operating region and how they can be controlled.
At low load the cycle-to-cycle phenomena cause periodic behavior in combustion timing; together with cylinder deviations this is found responsible for decreasing the operating regime. Increasing the operating region by spark assistance is demonstrated and also the possibility to phase combustion timing by advance of the spark timing.
The combustion is monitored in real time using cylinder pressure sensors. Emissions are measured individually for each cylinder. Results are discussed in terms of Coefficient Of Variation (COV), auto correlation coefficient (R), Crank Angle 50% burned (CA50) and emissions in terms of Indicated Specific Carbon Monoxides (ISCO), Hydro Carbons (ISHC) and Nitrogen Oxides (ISNOx).
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Citation
Persson, H., Pfeiffer, R., Hultqvist, A., Johansson, B. et al., "Cylinder-to-Cylinder and Cycle-to-Cycle Variations at HCCI Operation With Trapped Residuals," SAE Technical Paper 2005-01-0130, 2005, https://doi.org/10.4271/2005-01-0130.Also In
Homogeneous Charge Compression Ignition (HCCI) Combustion 2005
Number: SP-1963; Published: 2005-04-11
Number: SP-1963; Published: 2005-04-11
Homogeneous Charge Compression Ignition (HCCI) Combustion on CD-ROM from the SAE 2005 World Congress
Number: SP-1982CD; Published: 2005-04-11
Number: SP-1982CD; Published: 2005-04-11
References
- Onishi S. Hong Jo S. Shoda K. Do Jo P Kato S “Active Thermo-Atmosphere Combustion (ATAC) - A New Combustion Process for Internal Combustion Engines” SAE Paper 790501
- Najt P. Foster D. E. “Compression-Ignited Homogeneous Charge Combustion” SAE Paper 830264
- Christensen M. Einewall P. Johansson B. “Homogeneous Charge Compression Ignition (HCCI) Using Isooctane, Ethanol and Natural Gas - A Comparison to Spark Ignition Operation” SAE Paper 972874
- Hultqvist A. Christensen M. Johansson B. Franke A. Richter M. Aldén M. “A study of the Homogeneous Charge Compression Ignition Combustion Process by Chemiluminescence Imaging” SAE Paper 1999-01-3680
- Olsson J-O. Erlandsson O. Johansson B. “Experiments and Simulations of a Six-Cylinder Homogeneous Charge Compression Ignition (HCCI) Engine” SAE Paper 2000-01-2867
- Olsson J-O. Tunestål P. Haraldsson G. Johansson B. “A Turbo Charged Dual Fuel HCCI Engine” SAE Paper 2001-01-1896
- Willand J. Nieberding R-G. Vent G. Enderle C. “The Knocking Syndrome - Its Cure and Its Potential” SAE Paper 982483
- Zhau H. Li J. Ma T. Ladommatos N. “Performance and Analysis of a 4-stroke Multi-Cylinder Gasoline Engine with CAI Combustion” SAE paper 2002-01-0420
- Allen J. Law D. “Variable Valve Actuated Controlled Auto-Ignition: Speed Load Maps and Strategic Regimes of Operation” SAE paper 2002-01-0422
- Osborne R. J. Li G. Sapsford S. M. Stokes J. Lake T. H. Heikail M. R. “Evaluation of HCCI for Future Gasoline Powertrains” SAE paper 2003-01-0750
- Koopmans L. Ström H. Lundgren S. Backlund O. Denbratt I. “Demonstrating a SI-HCCI-SI Mode Change on a Volvo 5-Cylinder Electronic Valve Control Engine” SAE Paper 2003-01-0753
- Hyvönen J. Haraldsson G. Johansson B. “Operating conditions using spark assisted HCCI combustion during combustion mode transfer to SI in a Multi-Cylinder VCR-HCCI engine” SAE Paper 2005-01-0109
- Christensen M. Johansson B. Amnéus P. Mauss F. “Supercharged Homogeneous Charge Compression Ignition” SAE Paper 980787
- Aceves S. Martinez-Frias J. Flowers D. Smith J “A Decoupled Model of Detailed Fluid Mechanics Followed by Detailed Chemical Kinetics for Prediction of Iso-Octane HCCI Combustion” SAE Paper 2001-01-3612
- Heywood J. B. “Internal Combustion Engine Fundamentals” Mc Graw-Hill New York 1988
- Johansson B. “On Cycle to Cycle Variations in Spark Ignition Engines -The Effects of Fluid Flow and Gas Composition in the Vicinity of the Spark Plug on Early Combustion” Lund Institute of Technology Lund 1995
- Koopmans L. Backlund O. Denbratt I. “Cycle to Cycle Variations: Their influence on Cycle Resolved Gas Temperature and Unburned Hydrocarbons from a Camless Gasoline Compression Ignition Engine” SAE Paper 2002-01-0110
- Hyvönen J. Haraldsson G. Johansson B. “Balancing cylinder to cylinder variations in a Multi-Cylinder VCR_HCCI engine” SAE Paper 2004-01-1897
- Persson H. Agrell M. Olsson J-O. Johansson B. Ström H. “The Effect of Intake Temperature on HCCI Operation Using Negative Valve Overlap” SAE Paper 2004-01-0944