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Effects of Initial In-Cylinder Flow Field on Mixture Formation in a Premixed Compression Ignition Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published March 06, 2000 by SAE International in United States
Annotation ability available
Event: SAE 2000 World Congress
To find more effective lean mixture preparation methods for smokeless and low NOx combustion, a numerical study of the effects of in-cylinder flow field before injection on mixture formation in a premixed compression ignition engine was conducted. Premixed compression ignition combustion is a very attractive method to reduce both NOx and soot emissions, but it still has some problems, such as high HC and CO emissions. In case of early direct injection, it is important to avoid wall wetting by spray impingement, which can cause higher HC and CO emissions. Since it is not easy to examine the effects of initial flow and injection parameters on mixture formation over the wide range by practical engine tests, a computer program named “GTT (Generalized Tank and Tube)” code was used to simulate the in-cylinder phenomena before autoignition. Different combinations of the initial flow (including tumble flow) and fuel injection parameters were tested to predict the effects of the flow field on the fuel-air mixture formation. Based on the calculation results, possibilities to form leaner mixtures, avoiding wall wetting before autoignition, are discussed. The calculation results indicated that the in-cylinder flow field before fuel injection should be adapted to fuel injection conditions, so that fuel droplets are dispersed more widely before complete evaporation to make a leaner mixture.
- Tadashi Tsurushima - New ACE Institute Co., Ltd.
- Takeshi Miyamoto - New ACE Institute Co., Ltd.
- Hisashi Akagawa - New ACE Institute Co., Ltd.
- Yuzo Aoyagi - New ACE Institute Co., Ltd.
- Je-Hyung Lee - Mechanical Engineering Laboratory, MITI
- Daeyup Lee - Mechanical Engineering Laboratory, MITI
- Shinichi Goto - Mechanical Engineering Laboratory, MITI
- Tomoyuki Wakisaka - Kyoto University
- Takuji Ishiyama - Kyoto University
- Hiroshi Kawanabe - Kyoto University
CitationTsurushima, T., Miyamoto, T., Akagawa, H., Aoyagi, Y. et al., "Effects of Initial In-Cylinder Flow Field on Mixture Formation in a Premixed Compression Ignition Engine," SAE Technical Paper 2000-01-0331, 2000, https://doi.org/10.4271/2000-01-0331.
- Takeda, Y., Nakagome, K., and Niimura, K., “Emission Characteristics of Premixed Lean Diesel Combustion with Extremely Early Staged Fuel Injection”, SAE Transactions, 105, J. of Fuel & Lubricants, pp. 938-947, Paper No. 961163, 1996
- Yanagihara, H., Sato, Y., Mizuta, J., “A Study of DI Diesel Combustion under Uniform-Highly Dispersed Mixture Formation”, 13th Internal Combustion Engine Symposium, pp. 365-369, 1996 (in Japanese)
- Nakagome, K., Shimazaki, N., Niimura, K. and Kobayashi, S., “Combustion and Emission Characteristics of Premixed Lean Diesel Combustion Engine”, SAE paper 970898, 1997
- Shimazaki, N., Akagawa, H. and Tsujimura, K., “An Experimental Study of Premixed Lean Diesel Combustion”, SAE paper 1999-01-0181, 1999
- Akagawa, H., Miyamoto, T., Harada, A., Sasaki, S., Shimazaki, N., Hashizume, T and Tsujimura, K., “Approaches to Solve Problems of the Premixed Lean Diesel Combustion”, SAE paper 1999-01-0183, 1999
- Harada, A., Shimazaki, N., Sasaki, S., Miyamoto, T Akagawa, H., and Tsujimura, K., “The Effects of Mixture Formation on Premixed Lean Diesel Combustion”, SAE paper 980553, 1998
- Iwabuchi, Y., Kawai, K., Shoji T., and Takeda, Y., “Trial of New Concept Diesel Combustion System - Premixed Compression-Ignited Combustion”, SAE paper 1999-01-0185, 1999
- Miyamoto, T., Hayashi, A. K., Harada, A., Sasaki, S., Akagawa, H., and Tsujimura, K., “Numerical Simulation of Premixed Lean Diesel Combustion in a DI Engine”, Proceedings of The 4th International Symp. COMODIA 98, Japan, pp.179-184, 1998
- Miyamoto, T., Hayashi, A. K., Harada, A., Sasaki, S., Akagawa, H., and Tsujimura, K., “A Computational Investigation of Premixed Lean Diesel Combustion”, SAE paper 1999-01-0185, 1999
- Wakisaka, T., Imamura, F., Takeuchi, S., Isshiki, Y. and Chung, J. H., “CFD Simulation of Mixture Formation Process in Premixed Lean Combustion Diesel Engines using a GTT code”, Proceedings of 15th Internal Combustion Engine Symposium (International) in Seoul, pp.459-464, 1999
- Wakisaka, T., Shimamoto, Y., Isshiki, Y., Noda, T., Matsui, A., and Akamatsu, S., “Numerical Analysis of Spray Phenomena in Fuel Injection Engines”, Proceedings of The 3rd International Symp. COMODIA 94, Japan, pp.403-409, 1994
- Wakisaka, T., Ibaraki, K., Chung, J. H. and Isshiki, Y., “A Study of Droplet and Liquid-Film Evaporation Models for Numerical Analysis of Fuel Sprays”, Proceedings of 13th Internal Combustion Engine Symposium, Japan, pp.535-540, 1996
- Chung, J. H., Wakisaka and Ibaraki, K., Proceedings of 3rd KSME/JSME Thermal Engineering Conf., Vol.II, pp.167-172, 1996
- Tsurushima, T., Zhang, L. and Ishii, Y., “A study of Unburnt Hydrocarbon Emission in Small DI Engines”, SAE paper 1999-01-0512, 1999