This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Particulate Formation and Flame Structure in Diesel Engines
Annotation ability available
Sector:
Language:
English
Abstract
The present paper describes the particulate formation in diesel flames considering the flame structure and its similarity to that of gaseous turbulent diffusion flames. A comparison of spatial variations of soot concentration, equivalence ratio and flame temperature between diesel flames and turbulent diffusion flames reveals the facts that soot particles are mostly farmed in a region where the equivalence ratio is near stoichiometric and the flame temperature is the highest in both flames, and that in diesel flames this region exists generally near the flame tip.
A close inspection of high speed photographs of diesel flames suggests the three major routes of soot emission from diesel engines: quenching of flamelets detached from the flame tip due to 1) the flame impingement onto the wall; and 2) cooling of the flamelets by the bulk air; and 3) survival of soot containing flamelets inside the flame.
Authors
Topic
Citation
Kamimoto, T. and Yagita, M., "Particulate Formation and Flame Structure in Diesel Engines," SAE Technical Paper 890436, 1989, https://doi.org/10.4271/890436.Also In
References
- Lewis, B. von Elbe, G. “Combustion, Flames and Explosions of Grases” 2nd Academic press 458 1961
- Haynes B.S. Wagner H, GG. “Soot Formation” Prog. Energy Combust. Sci. 7 229 273 1981
- Santoro, R. J. Semerjian, H. G. Dobbins, R. A. “Soot Particle Measurements in Diffusion Flames” Combust. Flame 51 203 218 1983
- Ikegami, M. Shioji, M. Sakagami, Y. “Measurement of Particulates in Flames by Laser Homodyne Technoque” Bull, of JSME 29 247 156 163 1986
- Nishida, O. Mukohara, S. “Prediction of Soot Formation and Decomposition in Tubulent Diffusion Flame” Bull. Kobe University of Mercantile Marine 32 39 56 1984
- Milson, A. Chigier, N. A. “Studies of Methane and Methan-Air Flames impinging on a Cold Plate” Combust. Flame 21 295 305 1973
- Komiyama, M. Takagi, T. Matsunari, K. “Simulations Multi-Point Temperature Measurements by Laser Rayleigh Scattering in Turbulent Diffusion Flames” Trans. JSME (Japanese) 54 502 1486 1490 1988
- Takagi, T. Kotoh, S. “Prediction of Flow and Combustion in a Turbulent Diffusion Flame,” Trans. JSME (Japanese) 48 436 2609 2617 1982
- Chiger, N. “Energy, Combustion and Environment” McGrow-Hill Book Co. 199 1981
- Uyehara, O. A. “Estimating Mixing and Sooting in Diffusion Flames” SAE Paper, No. 831338 1983
- Wohlenberg, W.J. “The Influence of Reaction Interface Extension in the Combustion of Gaseous Fuel Constituents” Trans. ASME A-27 143 160 1948
- Kamimoto, T. Yokota, H. Kobayashi, H. “Effect of High Pressure Injection on Soot Formation Processes in a Rapid Compression Machine to Simulate Diesel Flames” SAE Paper No. 871610 1987
- Ikegami, M. Li, X-h. Nakayama, Y. Miwa, K. “Trend and Origin of Particulate and Hydrocarbon Emission from a Direct-Injection Diesel Engine” SAE Paper No. 831290 1983
- Chang, Y. J. Kobayashi, H. Matzuzawa, K. Kamimoto, T. “A Photographic Study of Soot Formation and Combustion in a Diesel Flame with a Rapid Compression Machine” Int. Symp. on Diagnostics and Modeling of Combustion in Reciprocating Enqines 149 157 1985
- Scheid, E. Pischinger, F. Knoche, K. F. Daams, H.-J. Hassel, E. P. Reuter, U. “Spray Combustion Chamber with Optical Access, Ignition Zone Visualization and First Raman Measurements of Local Air-Fuel Ratio” SAE Paper No. 861121
- Aoyagi, Y. Kamimoto, T. Matsui, Y. Matsuoka. S. “A Gas Sampling Study on the Formation Processes of Soot and NO in a DI Diesel Engine” SAE Paper No. 800254
- Peters, N. “Laminar Diffusion Flamelet Models in Non-Premixed Turbulent Combustion” Prog, in Energy and Combust. Sci. 10 3 319 339 1984
- Ikegami, M. Shioji, M. Nishimoto, K. “Turbulence Intensity and Spatial Integral Scale During Compression and Expansion Strokes in Four-Cycle Reciprocating Engine” SAE Paper, No. 870372 1987
- Siozaki, T. Suzuki, T. Shimoda, M. “Observation of Combustion Process in D.I. Diesel Engine via High Speed Direct and Schlieren Photography” SAE Paper, No. 800025 1980
- Kamimoto, T. Bae, M-h. “High Combustion Temperature for the Reduction of Particulate in Diesel Engines” SAE Paper. No. 880423 1988
- Kamimoto, T. Takahashi, H. Kobayashi, H. Matsuoka “Convective Heat Transfer of an impinging Diesel Flame in a Rapid Compression Machine” SAE Paper, No. 821035 1982
- Kamimoto, T. Osako. S. Matsuoka, S. “An Air Cell DI Diesel Engine and Its Soot Emission Characteristics” SAE Paper, No. 831297 1983