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吸気ポート水噴射によるディーゼル機関のNO_x低減 : NO_x低減率の実測値と予測値の比較


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Title: 吸気ポート水噴射によるディーゼル機関のNO_x低減 : NO_x低減率の実測値と予測値の比較
Other Titles: NO_x Reduction in Diesel Engines due to Port Water-Injection : Comparison of NO_x Reduction Rate between Experiment and Prediction
Authors: 石田, 正弘 / 陳, 之立 / 江島, 憲一郎 / 植木, 弘信
Authors (alternative): Ishida, Masahiro / Chen, Zhi-Li / Ejima, Kenichiro / Ueki, Hironobu
Issue Date: 25-Nov-1997
Publisher: 日本機械学会
Citation: 日本機械学會論文集. B編 63(615) p.3798-3805, 1997
Abstract: The effect of port water-injection on the exhaust NO_x reduction was examined experimentally as well as theoretically. In the experiment, water was injected into each suction port of a 4 cylinder turbocharged DI diesel engine using gasoline injectors. The exhaust NO_x was reduced significantly by port water-injection, and about 50% reduction in NO_x concentration was obtained by injecting an amount of 0.035kg of water/kg of air under various engine operation conditions. By comparing between the experiment and the analysis based on the authors' two-zone model, it is shown that the NO_x reduction is mainly caused by a decrease in the temperature of the burned gas resulting from an increase in the specific heat due to humidification.
Keywords: Diesel Engine / Port Water Injection / NO_x Reduction / Two-Zone Model Analysis
URI: http://hdl.handle.net/10069/6750
ISSN: 03875016
Type: Journal Article
Text Version: publisher
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/6750

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