| Project/Area Number |
06555063
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Thermal engineering
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| Research Institution | RITSUMEIKAN UNIVERSITY |
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Principal Investigator |
YOSHIHARA Yoshinobu Ritsumeikan University, Faculty of Engineering and Science, Professor, 理工学部, 教授 (30174999)
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| Co-Investigator(Kenkyū-buntansha) |
KITO Shigehiro TAKUMA Co., Ltd., R & D Department, Manager, 第2研究室, 室長
ADACHI Masahiro HORIBA Ltd., Engine Measurement R & D,Supervisor, 自動車計測部, 主任
NISHIWAKI Kazuie Ritsumeikan University, Faculty of Engineering and Science, Professor, 理工学部, 教授 (20025969)
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| Project Period (FY) |
1994 – 1995
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| Project Status |
Completed (Fiscal Year 1995)
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| Budget Amount *help |
¥5,900,000 (Direct Cost: ¥5,900,000)
Fiscal Year 1995: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1994: ¥4,600,000 (Direct Cost: ¥4,600,000)
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| Keywords | SNCR / Nitric Oxide / Diesel Engine / Exhaust Gas Treatment / Methylamine |
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| Research Abstract |
Selective non-catalytic system for reducing nitric oxide in diesel engine exhaust using methylamine (CH_3NH_2) as the reductant has been developed. The results obtained at the experiments for a part of diesel exhaust using a electrically heated quartz flow reactor show that more than 80% NO reduction ratio is achieved in the reactor temperature range of 673 K to 800 K with a molar ratio [CH_3NH_2] / [NO] of 1.0. Experiments targetting whole diesel exhaust has also been carried out. In those experiments, high speed, single cylinder, water cooled, naturally aspirated, four cycle, DI diesel engine having 876 cc of stroke volume was used as a test engine and 40% water solved methylamine was injected at a exhaust manifold using an electrically controlled gasoline injector. The results show that about 70% of NO reduction ratio is achieved at the molar ratio of 3.0 without the leak of ammonia and methylamine. It is further shown that more than 80% NO reduction ratio at the molar ratio of 1.0 can be attained bythe complete mixing of methylamine and exhaust.
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