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Effects of Injection Conditions on Mixture Formation Process in a Premixed Compression Ignition Engine
Technical Paper
2000-01-1831
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The mixture formation process in a premixed compression ignition engine was numerically analyzed. This study aimed to find out effective injection conditions for lean mixture formation with high homogeneity, since the NOx and soot emissions in the engine are closely related to the mixture homogeneity. To calculate fuel spray behavior, a practical computer code GTT (Generalized Tank and Tube) was employed. In a model for the premixed compression ignition engine, the effects of injection parameters, such as injection timing, initial droplet size, spray angle, injection velocity, nozzle type (pintle and hole) and injection position / direction, on the mixture homogeneity near ignition timing (or TDC) were investigated. To evaluate the homogeneity of the mixture, an index was defined based on the spatial distribution of fuel mass fraction. The fuel vapor mass fractions as well as the homogeneity indices, obtained as a function of time, were compared under various boundary conditions.
This study concludes that high homogeneity lean mixture could be achieved with a pintle type nozzle by combining an advanced injection and small initial droplets in a small spray cone angle. Furthermore, the side injection concept with hole type nozzles using spray-to-spray impingement is effective for the lean near-homogeneous mixture formation.
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Citation
Lee, J., Goto, S., Tsurushima, T., Miyamoto, T. et al., "Effects of Injection Conditions on Mixture Formation Process in a Premixed Compression Ignition Engine," SAE Technical Paper 2000-01-1831, 2000, https://doi.org/10.4271/2000-01-1831.Also In
References
- Takeda, Y. Nakagome, K. Niimura, K. Emission Characteristics of Premixed Lean Diesel Combustion with Extremely Early Staged Fuel Injection Transactions of the Japan Society of Mechanical Engineers 62 599 347 354 1996
- Shimazaki, N. Akagawa, H. Tsujimura, K. Effects of Mixture Homogeneity on Premixed Lean Diesel Combustion The 14 th Internal Combustion Engine Symposium Nagoya 283 288 1997
- Harada, A. Sasaki, S. Miyamoto, T. Akagawa, H. Tsujimura, K. Emission Characteristics of Premixed Lean Diesel Combustion -The effects of injection nozzle and combustion chamber shape on combustion and emission characteristics SAE of Japan Autumn Meeting Hiroshima 97 100 1997
- Harada, A. Shimazaki, N. Sasaki, S. Miyamoto, T. Akagawa, H. Tsujimura, K. The Effects of Mixture Formation on Premixed Lean Diesel Combustion SAE 980533 1998
- 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
- Gray Allen W. Ryan Thomas W. Homogeneous Charge Compression Ignition (HCCI) of Diesel Fuel SAE paper 971676 1997
- Furutani, M. Ohta, Y. Kono, M. Hasegawa, M. An Ultra-Lean Premixed Compression Ignition Engine Concept and its Characteristics The Fourth International COMODIA 98 1998
- Akagawa, H. Mityamoto, T. Sasaki, S. Shimazaki, N. Hashizume, T. Tsujimura, K. Approaches to Solve Problems of the Premixed Lean Diesel Combustion SAE 1999-01-0183 1999
- Wakisaka, T. Imamura, F. Takeuchi, S. Isshiki, Y. Chung, J.-H. CFD Simulation of Mixture Formation Process in a Premixed Lean Combustion Diesel Engines Using a GTT Code Proceedings of The 15 th Internal Combustion Engine Symposium (International) Seoul, Korea July 13-16 1999
- Wakisaka, T. Takeuchi, S. Chung, J.-H. Diesel Spray and Combustion - Their Modeling and Numerical Analysis by Means of a GTT Code Proceedings of the Second International Workshop on Advanced Spray Combustion 273 1998
- Wakisaka, T. Takeuchi, S. Imamura, F. Ibaraki, K. Isshiki, Y. Numerical Analysis of Diesel Sprays Impinging on Combustion Chamber Walls by Means of a Discrete Droplet / Liquid-Film Model The Fourth International Symposium COMODIA 98 459 464 1998
- Miyamoto, T. Hayashi, A.K. Harada, A. Sasaki, S. Akagawa, H. Tsujimura, K. A Computational Investigation of Premixed Lean Diesel Combustion - Characteristics of fuel-air mixture formation, combustion and emissions SAE Paper 1999-01-0229 1999
- Tsurushima, T. Miyamoto, T. Akagawa, H. Aoyagi, Y. Lee, J.-H. Lee, D. Goto, S. Wakisaka, T. Ishiyama, T. Kawanabe, H. Effects of In-Cylinder Flow Field on Mixture Formation in a Premixed Compression Ignition Engine SAE Paper 2000-01-0331 2000