Reduction of Nitrogen Oxides by Exhaust Gas Recirculation and Water Injection on Diesel Engine
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概要
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In order to control nitrogen oxides by exhaust gas recirculation (i. e. EGR) and water injection in intake air, we have tested how much reduction is possible by using the precombustion chamber type diesel engine.<BR>The engine was operated at five different speeds and its corresponding five loads, in addition, we attemped to employ 21 mode of 1971 Federal Emission Test Procedure and 13 mode of 1970 California Emission Test Procedure.<BR>The nitric oxides, carbon monoxide and carbon dioxide concentrations were measured with NDIR and NDUV.<BR>Figs. 3, 10, and 12, show the effects of EGR rate and operating conditions on NO concentration.<BR>The decrease in NO concentration with increase in EGR rate is larger at 3/4 load.<BR>The CO concentration and exhaust smoke increases rapidly with increase in EGR rate at heavy loads as shown in Figs. 4, 7, and 11.<BR>Fig. 9 illustrates that the water injection is one of the beneficial technique for this purpose.<BR>Therefore, it can be said, that EGR and water injection are available methods for reduction of NO<SUB>x</SUB>.
- 一般社団法人 日本エネルギー学会の論文
一般社団法人 日本エネルギー学会 | 論文
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