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Influence of a Fast Injection Rate Common Rail Injector for the Spray and Combustion Characteristics of Diesel Engine
Technical Paper
2011-01-0687
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
For reduction of NOx and soot emission with conventional diesel diffusion combustion, the authors focused on enhancement of the rate of injection (hereafter referred to as RoI) to improve air availability, thus enhancing the fuel distribution and atomization. In order to increase opening ramp of the RoI (hereafter referred to as fast injection rate), a hydraulic circuit was improved and nozzle geometries were optimized to make the greatest use of the advantages of the hydraulic circuit.
Two different common rail injectors were prepared for this research. One is a mass production-type injector with piezo actuator that achieved the EURO-V exhaust gas emission standards, and the other is a prototype injector equipped with the new hydraulic circuit. The nozzle needle of the prototype injector is directly actuated by high-pressure fuel from common rail to improve the RoI. As a result, the prototype injector used for this research has a property as approximately 80% faster injection rate than the mass production-type.
The liquid phase (non-vapor) spray characteristics were evaluated using a high-pressure vessel, high-speed video camera, and metal halide lamps as the light source. In addition, the spray vapor characteristics under the same temperature and pressure conditions as an actual engine combustion chamber were evaluated with the high-temperature, high-pressure vessel using the LIF method. The combustion characteristics were evaluated using a single-cylinder engine system with same specification of the four-cylinder mass production diesel engine. At the set point of the EURO-V NOx level under the 1500 rpm half-load operating conditions, soot was reduced 48% without deterioration in combustion noise. This new prototype injector has the performance of liquid phase spray penetration that is 23% longer than the mass production-type, and the spray area is expanded and average light intensity number of spray using LIF method is 31% lower than mass production-type at the starting point of combustion, 0.5 ms after the start of injection. It was confirmed that faster injection rate causes a longer liquid phase spray penetration, improves fuel distribution and atomization itself, thus reducing soot greatly.
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Authors
- Akira Kato - Honda R&D Co., Ltd.
- Katsuya Matsuura - Honda R&D Co., Ltd.
- Takazo Hakozaki - Honda R&D Co., Ltd.
- Osamu Suzuki - Honda R&D Co., Ltd.
- Shigenori Haraguchi - Honda R&D Co., Ltd.
- Yasuhiro Yoshimi - Honda R&D Co., Ltd.
- Takahiro Katano - Honda R&D Co., Ltd.
- Tomoyuki Hashimoto - Honda R&D Co., Ltd.
Topic
Citation
Kato, A., Matsuura, K., Hakozaki, T., Suzuki, O. et al., "Influence of a Fast Injection Rate Common Rail Injector for the Spray and Combustion Characteristics of Diesel Engine," SAE Technical Paper 2011-01-0687, 2011, https://doi.org/10.4271/2011-01-0687.Data Sets - Support Documents
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References
- Miyaki, M. Fujisawa, H. Masuda, A. Yamamoto, Y. “Development of New Electronically Controlled Fuel Injection System ECD-U2 for Diesel Engines,” SAE Technical Paper 910252 1991 10.4271/910252
- Morita, T. Suzuki, N. Satoh, N. Wada, K. Ohno, H. “Study on Low NOx Emission Control Using Newly Developed Lean NOx Catalyst for Diesel Engines,” SAE Technical Paper 2007-01-0239 2007 10.4271/2007-01-0239
- Akiyama, H. Yuasa, H. Kato, A. Saiki, T. Sanada, K. Kado, N. “Precise Fuel Control of Diesel Common-Rail System by using OFEM,” SAE Technical Paper 2010-01-0876 2010 10.4271/2010-01-0876
- Oki, M. Matsumoto, S. Toyoshima, Y. Ishisaka, K. Tsuzuki, N. “180MPa Piezo Common Rail System,” SAE Technical Paper 2006-01-0274 2006 10.4271/2006-01-0274
- Nagata, K. Tanaka, Y. Yano, K. “Technologies of DENSO Common Rail for Diesel Engine and Consumer Values,” SAE Technical Paper 2004-21-0075 2004 10.4271/2004-21-0075
- Kanda, T. Hakozaki, T. Uchimoto, T. Hatano, J. Kitayama, N. Sono, H. “PCCI Operation with Fuel Injection Timing Set Close to TDC,” SAE Technical Paper 2006-01-0920 2006 10.4271/2006-01-0920
- Kanda, T. Hakozaki, T. Uchimoto, T. Sono, H. et al. “PCCI Operation with Early Injection of Conventional Diesel Fuel,” SAE Technical Paper 2005-01-0378 2005 10.4271/2005-01-0378
- Kimura, S. Aoki, O. Kitahara, Y. Aiyoshizawa, E. “Ultra-Clean Combustion Technology Combining Low-Temperature and Premixed Concept to Meet Future Emission Standards,” SAE Technical Paper 2001-01-0200 2001 10.4271/2001-01-0200
- Hasegawa, R. Yanagihara, H. “HCCI Combustion in Diesel Engine,” SAE Technical Paper 2003-01-0745 2003 10.4271/2003-01-0745
- Shimazaki, N. Akagawa, H. Tsujimura, K. “Experimental Study of Premixed Lean Diesel Combustion,” SAE Technical Paper 1999-01-0181 1999 10.4271/1999-01-0181
- Akihama, K. Takatori, Y. Inagaki, K. Sasaki, S. Dean, A. “Mechanism of Smokeless RichDiesel Combustion by Reducing Temperature,” SAE Technical Paper 2001-01-0655 2001 10.4271/2001-01-0655
- Baumgarten, C. “Mixture Formation in Internal Combustion Engines” Springer 3-540-30835-0 10 2006
- Takamura, A. Fukushima, S. Omori, Y. Kamimoto, T. “Development of a New Measurement Tool for Fuel Injection Rate in Diesel Engines,” SAE Technical Paper 890317 1989 10.4271/890317
- Matsui, R. Shimoyama, K. Nonaka, S. Chiba, I. Hidaka, S. “Development of High-performance Diesel Engine Compliant with Euro-V,” SAE Technical Paper 2008-01-1198 2008 10.4271/2008-01-1198
- Yamashita, H. Suzuki, T. Matsuoka, H. Kitano, K. Mashida, M. “Research of the DI Diesel Spray Characteristics at High Temperature and High Pressure Ambient - Quantitative Analysis of Fuel Vapor Concentration -” DENSO Technical Review 11 1 2006