A Study on the Improvement of NOx Reduction Efficiency for a Urea SCR System (Third Report):-High NOx Reduction Efficiency Mechanism at Transient Operation with Low Exhaust Gas Temperatures-
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概要
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NOx reduction mechanism and a requirement for high NOx reduction efficiency in a urea SCR system at transient conditions with low exhaust gas temperature were investigated by using a four liters multi-cylinder diesel engine. NOx can be significantly reduced by adjusting mode-overall SCR inlet NO2/NOx ratio at 0.5±0.1 with adopting NH<SUB>3</SUB> adsorption quantity control. It has been shown that ammonium nitrate (NH<SUB>4</SUB>NO<SUB>3</SUB>) plays an important role to proceeding Fast SCR reaction at transient low exhaust gas temperature conditions.
- 公益社団法人 自動車技術会の論文
公益社団法人 自動車技術会 | 論文
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