Diesel Combustion and Emission Using High Boost and High Injection Pressure in a Single Cylinder Engine : Effects of Boost Pressure and Timing Retardation on Thermal Efficiency and Exhaust Emissions(<Special Issue>Advanced Combustion Technology in Interna
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概要
- 論文の詳細を見る
Heavy-duty diesel engines have adopted numerous technologies for clean emissions and low fuel consumption. Some are direct fuel injection combined with high injection pressure and adequate in-cylinder air motion, turbo-intercooler systems, and strong steel pistons. Using these technologies, diesel engines have achieved an extremely low CO_2 emission as a prime mover. However, heavy-duty diesel engines with even lower NOx and PM emission levels are anticipated. This study achieved high-boost and lean diesel combustion using a single cylinder engine that provides good engine performance and clean exhaust emission. The experiment was done under conditions of intake air quantity up to five times that of a naturally aspirated (NA) engine and 200MPa injection pressure. The adopted pressure booster is an external supercharger that can control intake air temperature. In this engine, the maximum cylinder pressure was increased and new technologies were adopted, including a monotherm piston for endurance of P_<max>=30MPa. Moreover, every engine part is newly designed. As the boost pressure increases, the rate of heat release resembles the injection rate and becomes sharper. The combustion and brake thermal efficiency are improved. This high boost and lean diesel combustion creates little smoke; ISCO and ISTHC without the ISNOx increase. It also yields good thermal efficiency.
- 一般社団法人日本機械学会の論文
- 2005-11-15
著者
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GOTO Yuichi
National Traffic Safety and Environment Laboratory
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Goto Yuichi
Environment Research Department National Traffic Safety And Environment Laboratory
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Odaka Matsuo
National Traffic Safety And Environment Laboratory
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Aoyagi Yuzo
New A. C. E. Institute Co. Ltd.
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Aoyagi Yuzo
New Ace Institute Co. Ltd.
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KUNISHIMA Eiji
New ACE Institute Co., Ltd.
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ASAUMI Yasuo
New ACE Institute Co., Ltd.
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AIHARA Yoshiaki
New ACE Institute Co., Ltd.
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Kunishima Eiji
New Ace Institute Co. Ltd.
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Aihara Yoshiaki
New Ace Institute Co. Ltd.
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