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BSFC Improvement and NOx Reduction by Sequential Turbo System in a Heavy Duty Diesel Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 16, 2012 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Reduction of exhaust emissions and BSFC has been studied using a high boost, a wide range and high-rate EGR in a Super Clean Diesel, six-cylinder heavy duty engine. In the previous single-turbocharging system, the turbocharger was selected to yield maximum torque and power. The selected turbocharger was designed for high boosting, with maximum pressure of about twice that of the current one, using a titanium compressor. However, an important issue arose in this system: avoidance of high boosting at low engine speed. A sequential and series turbo system was proposed to improve the torque at low engine speeds. This turbo system has two turbochargers of different sizes with variable geometry turbines. At low engine speed, the small turbocharger performs most of the work. At medium engine speed, the small turbocharger and large turbocharger mainly work in series. At high engine speed, the small turbocharger does no work at all, but the large turbocharger works mainly using a small turbocharger bypass. The basic engine, with six cylinders in-line and displacement of 10.5 L, is equipped with a high-pressure fuel injection system and a high- and low-pressure loop EGR system for using the high boosting and high EGR rate to reduce BSNOx and PM. Experimentally obtained results show that the sequential and series turbocharging system has 50% higher torque than the conventional, with improved fuel consumption achieved in the low-speed region.
- Munemasa Hashimoto - New A.C.E. Institute Co., Ltd.
- Yuzo Aoyagi - New A.C.E. Institute Co., Ltd.
- Masayuki Kobayashi - New A.C.E. Institute Co., Ltd.
- Tetsuya Murayama - New A.C.E. Institute Co., Ltd.
- Yuichi Goto - National Traffic Safety & Enviro Lab
- Hisakazu Suzuki - National Traffic Safety & Enviro Lab
CitationHashimoto, M., Aoyagi, Y., Kobayashi, M., Murayama, T. et al., "BSFC Improvement and NOx Reduction by Sequential Turbo System in a Heavy Duty Diesel Engine," SAE Technical Paper 2012-01-0712, 2012, https://doi.org/10.4271/2012-01-0712.
Data Sets - Support Documents
|Unnamed Dataset 1|
- Japan Ministry of Environment About New Automotive Emission Standards in Future (8th Report) 2005
- Suzuki, T. Sato, A. Suenaga, K. “Development of a Higher Boost Turbocharged Diesel Engine for Better Fuel Economy in Heavy Vehicles,” SAE Technical Paper 830379 1983 10.4271/830379
- Sato, A. Suenaga, K. Noda, M. Maeda, Y. “Advanced Boost-up in Hino EP100-II Turbocharged and Charge-Cooled Diesel Engine,” SAE Technical Paper 870298 1987 10.4271/870298
- Endo, S. Otani, T. Kakinai, A. “An improvement Of Pumping Loss Of High Boosted Diesel Engines,” SAE Technical Paper 885102 1988 10.4271/885102
- Tsujita, M. Niino, S. Ishizuka, T. Kakinai, A. et al. “Advanced Fuel Economy in Hino New P11C Turbocharged and Charge-Cooled Heavy Duty Diesel Engine,” SAE Technical Paper 930272 1993 10.4271/930272
- Uchida, N. Daisho, Y. Saito, T. Sugano, H. “Combined Effects of EGR and Supercharging on Diesel Combustion and Emissions,” SAE Technical Paper 930601 1993 10.4271/930601
- Shimazaki, N. Hatanaka, H. Yokota, K. Nakahira, T. “A Study of Diesel Combustion Process Under the Condition of EGR and High-Pressure Fuel Injection with Gas Sampling Method,” SAE Technical Paper 960030 1996 10.4271/960030
- Stover, T. Reichenbach, D. Lifferth, E. “The Cummins Signature 600 Heavy-Duty Diesel Engine,” SAE Technical Paper 981035 1998 10.4271/981035
- Knecht, W. European Emission Legislation of Heavy Duty Diesel Engines and Strategies for Compliance Proceedings of the Thermo-and fluid dynamic Processes in Diesel Engines (THIESEL 2000) 289 302 2000
- Itoh, S. Nakamura, K. Reduction of Diesel Exhaust Gas Emission with Common Rail System (in Japanese with English summary) Journal of JSAE 55 9 46 52 2001
- Minato, A. Tanaka, T. Nishimura, T. “Investigation of Premixed Lean Diesel Combustion with Ultra High Pressure Injection,” SAE Technical Paper 2005-01-0914 2005 10.4271/2005-01-0914
- Alriksson, M. Denbratt, I. “Low Temperature Combustion in a Heavy Duty Diesel Engine Using High Levels of EGR,” SAE Technical Paper 2006-01-0075 2006 10.4271/2006-01-0075
- Shimo, D. Kataoka, M. Sagane, Y. Fujimoto, H. Terazawa, Y. EM Reduction by a Large Amount of EGR and Excessive Cooled Intake Gas in Diesel Engines FISITA2006 No. F2006P372 2006
- Ogawa, H. Li, T. Miyamoto, N. Kido, S. et al. “Dependence of Ultra-High EGR and Low Temperature Diesel Combustion on Fuel Injection Conditions and Compression Ratio,” SAE Technical Paper 2006-01-3386 2006 10.4271/2006-01-3386
- Wakisaka, Y. Hotta, Y. Inayoshi, M. Nakakita, K. et al. “Emissions Reduction Potential of Extremely High Boost and High EGR Rate for an HSDI Diesel Engine and the Reduction Mechanisms of Exhaust Emissions,” SAE Int. J. Fuels Lubr. 1 1 611 623 2009 10.4271/2008-01-1189
- Griffith, R. “Series Turbocharging for the Caterpillar ® Heavy-Duty On-Highway Truck Engines with ACERT™ Technology,” SAE Technical Paper 2007-01-1561 2007 10.4271/2007-01-1561
- Aoyagi, Y. Osada, H. Misawa, M. Hirosawa, T. Odaka, M. Goto, Y. “Diesel Emission Reduction using High Boost and High EGR Rate in a Single Cylinder Engine” JSAE Review of Automotive Engineering 26 4 2005
- Kobayashi, M. Aoyagi, Y. Adachi, T. Murayama, T. Noda, A. Goto, Y. Suzuki, H. “The Effect of the High Boost and High EGR on the Heavy Duty Multi Cylinder Diesel Engine with Low Pressure Loop EGR (in Japanese)” JSAE Transaction 40 4 2009
- Adachi, T. Kobayashi, M. Murayama, T. Aoyagi, Y. Suzuki, H. Goto, Y. “Effects of HPL and LPL-EGR System on Wide Range and High Rate EGR in High Boost Multi-cylinder Diesel Engines (in Japanese)” JSAE Transaction 40 4 2009