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Effect of Cooling of Burned Gas by Vertical Vortex on NOx Reduction in Small DI Diesel Engines
Technical Paper
2004-01-0125
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
A new nitrogen oxide (NOx) reduction concept is suggested. A strong vertical vortex generated within the combustion bowl can mix hot burned gas into the cold excess air at the center of the combustion-bowl. This makes the burned gas cool rapidly. Therefore, it is possible to reduce NOx, which would be produced if the burned gas remained hot. In this paper the effect was verified with a 3D-CFD analysis of spray, air, combustion gas, and thermal efficiency as well as experiments on a 4-cylinder 2.0-liter direct injection diesel engine.
The results confirmed that the vertical vortex was able to be strengthened with the change of spray characteristics and the combustion bowl shapes. This strengthened vertical vortex was able to reduce NOx by approximately 20% without making smoke and thermal-efficiency worse. Above results proved the effectiveness of this method.
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Shimo, D., Kataoka, M., and Fujimoto, H., "Effect of Cooling of Burned Gas by Vertical Vortex on NOx Reduction in Small DI Diesel Engines," SAE Technical Paper 2004-01-0125, 2004, https://doi.org/10.4271/2004-01-0125.Also In
Diesel Emissions on CD-ROM from the SAE 2004 World Congress
Number: SP-1835CD; Published: 2004-03-08
Number: SP-1835CD; Published: 2004-03-08
References
- Pierpont, D. A. Montgomery, D. T. Reitz, R. D. “Reducing Particulate and NOx Using Multiple Injections and EGR in a D.I. Diesel,” SAE paper, No. 950217
- Kimura, S. Aoki, O. Ogawa, H. Muranaka, S. Enomoto, Y. “New Combustion Concept for Ultra-clean and High-efficiency Small DI Diesel Engines,” SAE paper, No. 1999-01-3681
- Akihama, K. Takatori, Y. Inagaki, K. Sasaki, S. Dean, A. M. “Mechanism of the Smokeless Rich Diesel Combustion by Reducing Temperature,” SAE paper, No. 2001-01-0655
- Nishijima, Y. Asaumi, Y. Aoyagi, Y. “Premixed Lean Diesel Combustion (PREDIC) using Impingement Spray System,” SAE paper, No. 2001-01-1892
- Kitamura, T Matsuoka, S. “Development of Slanting Wall-impingement Type Carpet-roll Combustion System of DI Diesel Engine,” T-JSAE 22-1 33 1991
- Dec, D. E. Canaan, R. E. “PLIF Imaging of NO Formation in a DI Diesel Engine,” SAE paper, No.98014
- Nakagawa, H. Endo, H. Deguchi, Y. Noda, M. Oikawa, H. Shimada, T. “NO Measurement in Diesel Spray Flame Using Laser Induced Fluorescence,” SAE paper, No. 970874
- Ogasawara, M. Takagi, T. Fujii, K. “A fundamental Study on NO, CO and Their Control in Combustion systems,” Transactions of JSME 3427 1973
- Chikahisa, T. Kaneko, T. Kikuta, K. Hishinuma, Y. “Significant NOx Formation in Tip of Diesel Spray Flames and Its Reduction by Enhancing Mixing of the Region,” JSAE/SAE Fuel & Lubrications Meeting JSAE paper, No.20030064 SAE paper, No. 2003-01-1786
- Wakisaka, T. Shimatomo, Y. Isshiki, Y. Sumi, N. Tanuma, K. Modien, R. M. “Analysis of the Effects of In-Cylinder Flows during Intake Stroke on the Flow Characteristics near Compression TDC in Four-Stroke Cycle Engines,” Proceeding of COMODIA90 487
- Wakisaka, T. Shimatomo, Y. Isshiki, Y. Noda, T. Matsui, A. Akamatsu, S. “Numerical Analysis of Spray Phenomena in Fuel Injection Engines,” Proceeding of COMODIA94 403
- Wakisaka, T. Takeuchi, S. Imamura, F. Ibaraki, K. Isshiki, Y. “Numerical Analysis of Diesel Spray Impinging on Combustion Chamber Walls by Means of a Discrete Droplet / Liquid-Film Model,” Proceeding of COMODIA98 459
- Livengood, J. C. Wu, P. C. “Correlation of Autoignition Phenomena in Internal Combustion Engines and Rapid Compression Machines,” 5th Int. Symposium on Combustion 347 1955
- Takagi, T. Fukuyama, Y. Okamoto, T. Nakano, Y. “Numerical Simulation of Mixing and Combustion in Transient Sprays,” Proceeding of COMODIA94 397
- Patterson, M. A. Kong, S. C Hampson, G. J. Reitz, R. D. “Modeling the Effects of Fuel Injection Characteristics on Diesel Engine Soot and NOx Emissions,” SAE paper, No. 940523
- Eyzat, P. Guibet, J. C. “New theory allows the forecasting of nitrogen oxides formation in internal combustion engines,” SAE Paper, No. 680124
- Hiroyasu, H. Kadota, T. Arai, M. “Development and Use of a Spray Combustion Modeling to Predict Diesel Engine Efficiency and Pollutant Emission (1st Report, Combustion Modeling),” Transaction of JSME 1606 48 1982
- Nagle, J. Strickland-Constable, R. F. “Oxidation of Carbon Between 1000-2000 degree,” Proceeding of the Fifth Carbon Conference 1 154 1962