This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Investigation of the HCCI/CAI Combustion Process by 2-D PLIF Imaging of Formaldehyde
Technical Paper
2004-01-1901
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The paper reports an investigation into the HCCI/CAI combustion process in a single cylinder optical engine. The auto-ignition and combustion processes of primary reference fuels were studied using the two-dimensional PLIF technique as well as heat release analyses. The formaldehyde formed during the low-temperature reactions of HCCI/CAI combustion was visualized by a PLIF system. The formaldehyde was excited by a Nd:YAG laser pumped tunable dye laser at 355nm wavelength and detected by a gated ICCD camera. Both temporal and spatial distributions of formaldehyde were measured during the auto-ignition processes of different primary reference fuels. The results have shown that the formation of formaldehyde and its subsequent disappearance were closely related to the start of the low temperature and high temperature heat release processes, respectively. The formation of formaldehyde was more affected by the charge temperature than by the fuel concentration. But its subsequent burning or the start of main heat release combustion toke place at those areas where both the fuel concentration and the charge temperature were sufficient high. All fuels studied were found having similar formaldehyde formation timings to that of pure n-heptane. This means that the presence of iso-octane did not affect the start of low temperature reactions apparently. However, the heat release during low temperature reaction was significantly reduced with the presence of iso-octane in the primary reference fuels. In addition, the presence of iso-octane retarded the start of the main combustion stage.
Recommended Content
Authors
Citation
Zhao, H., Peng, Z., and Ma, T., "Investigation of the HCCI/CAI Combustion Process by 2-D PLIF Imaging of Formaldehyde," SAE Technical Paper 2004-01-1901, 2004, https://doi.org/10.4271/2004-01-1901.Also In
References
- Thring, R. H. Homogeneous Charge Compression Ignition (HCCI) engines SAE paper 892068 1989
- Zhao, H. Peng, Z. Ladommatos, N. Understanding of Controlled Autoignition Combustion in a Four-Stroke Gasoline Engine Proc Instn Mech Engrs 215 1297 1310 2001
- Epping, K. Aceves, S. Bechtold, R. Dec, J. The Potential of HCCI Combustion for High Efficiency and Low Emissions SAE paper 2002-01-1923 2002
- Law, D. Kemp, D. Allen, J. Kirkpatrick, G. Copland, T. Controlled Combustion in an IC-Engine with a Fully Variable Valve Train SAE paper 2000-01-0251 2000
- Wolters, P. Salber, W. Geiger, J. Duesmann, M. Controlled Auto Ignition Combustion Process with an Electromechanical Valve Train SAE paper 2003-01-0032 2003
- Cox, R. A. Cole, J. A. Chemical Aspects of the Autoignition of Hydrocarbon-Air Mixtures Combustion and Flame 60 109 123 1985
- Curran, H. J. Gaffuri, P. Pitz, W. J. Westbrook, C. K. A Comprehensive Modeling Study of n-Heptane Oxidation Combustion and Flame 114 149 177 1998
- Tanaka, S. Ayala, F. Keck, J. C. Heywood, J. B. Two-Stage Ignition in HCCI Combustion and HCCI Control by Fuels and Additives Combustion and Flame 132 219 239 2003
- Amano, T. Morimoto, S. Kawabata, Y. Modeling of the Effect of Air/Fuel Ratio and Temperture Distribustion on HCCI Engines SAE paper 2001-01-1024 2001
- Engdar, U. Johansson, B. Klingmann, J. Reacting Boundary Layers in a Homogeneous Charge Compression Ignition (HCCI) Engine SAE paper 2001-01-1032 2001
- Fiveland, S. B. Assanis, D. N. Development of a Two-Zone HCCI Combustion Model Accounting for Boundary layer Effects SAE paper 2001-01-1028 2001
- Easley, W. L. Agarwal, A. Lavoie, G. A. Modeling of HCCI Combustion and Emissions using Detailed Chemistry SAE paper 2001-01-1029 2001
- Hultqvist, A. Christensen, M. Johansson, B. Franke. A. Richter, M. Alden, M. A Study of the Homogeneous Charge Compression Ignition Combustion Process by Chemiluminescence Imaging SAE paper 1999-01-3680 1999
- Zhao, H. Peng, Z. Williams, J. Ladommatos, N. Understanding the Effects of Recycled Burnt Gases on the Controlled Autoignition (CAI) Combustion in Four-Stroke Gasoline Engines SAE paper 2001-01-3607 2001
- Richter, M. Franke. A. Alden, M. Hultqvist, A. Johansson, B. Optical Diagnostics Applied to a Naturally Aspirated Homogeneous Charge Compression Ignition Engine SAE paper 1999-01-3649 1999
- Iwabuchi, Y. Kawai, K. Shoji, T. Takeda, Y. Trial of New Concept Diesel Combustion System - Premixed Compression-Ignition Combustion SAE paper 1999-01-0185 1999
- Collin, R. Nygren, J. Richter, M. Aldén, M. Hildingsson, L. Johansson, B. Simultaneous OH- and Formaldehyde-LIF Measurements in an HCCI Engine SAE paper 2003-01-3218 2003
- Zhao, H. Ladommatos, N. Engine Combustion Instrumentation and Diagnostics 0-7680-0665-1 SAE International 2001
- Kosaka, H. Drewes, V. H. Catalfamo, L. Aradi, A. A. Lida, N. Kamimoto, T. Two-Dimensional Imaging of Formaldehyde Formed During the Ignition Process of a Diesel Fuel Spray SAE paper 2000-01-0236 2000
- Bäuerle, B. Hoffmann, F. Behrendt, F. Warnatz, J. Detection of Hot Spots in the End Gas of an Internal Combustion Engine Using Two-Dimensional LIF of Formaldehyde Twenty-Fifth Symposium: International on Combustion/The Combustion Institute 135 141 1994
- Schießl, R. Maas, U. Analysis of Temperature Fluctuations in an SI Engine by Laser-Induced Fluorescence Combustion and Flame 133 19 27 2003
- Miller, R. G. Lee, E. K. C. Single Vibronic Level Photochemistry of Formaldehyde (H 2 CO, 1 A 2 ): Radiative and Non-Radiative Transitions Chemical Physics Letters 33 1 104 107 1975
- Peng, Z. Zhao, H. Ladommatos, N. Effects of Air/Fuel Ratios and EGR Rates on HCCI Combustion of n-Heptane, a Diesel Type Fuel SAE Paper 2003-01-0747 2003
- Einecke, S. Schulz, C. Sick, V. Schießl, R Dreizler, A. Maas, U. Two-Dimensional Temperature Measurements in the Compression Stroke of an SI Engine Using Two-Line Tracer LIF SAE paper 982468 1998
- Heywood, J. B. Internal Combustion Engine Fundamentals 0-333-74013-8 1988