A study on the improvement of NOx reduction efficiency for a urea SCR system (Third report) - High NOx reduction efficiency mechanism at transient low exhaust gas temperature operation

Yutaka Murata; Sadahito Tokui; Ryo Komiya; Atsushi Kaneko; Yasuhiro Daisho; Hisakazu Suzuki; Hajime Ishii

A study on the improvement of NOx reduction efficiency for a urea SCR system (Third report) - High NOx reduction efficiency mechanism at transient low exhaust gas temperature operation

Yutaka Murata^*, Sadahito Tokui, Ryo Komiya, Atsushi Kaneko, Yasuhiro Daisho, Hisakazu Suzuki, Hajime Ishii

^*この研究の対応する著者

次世代自動車研究機構

研究成果: Article › 査読

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NOx reduction mechanism and requirements 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 while adopting NH3 adsorption quantity control. It has been shown that ammonium nitrate (NH₄NO₃) plays an important role in enhancing the Fast SCR reaction at transient low exhaust gas temperature conditions.

本文言語	English
ページ（範囲）	103-110
ページ数	8
ジャーナル	Review of Automotive Engineering
巻	31
号	2
出版ステータス	Published - 2010

ASJC Scopus subject areas

自動車工学

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AU - Komiya, Ryo

AU - Kaneko, Atsushi

AU - Daisho, Yasuhiro

AU - Suzuki, Hisakazu

AU - Ishii, Hajime

PY - 2010

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AB - NOx reduction mechanism and requirements 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 while adopting NH3 adsorption quantity control. It has been shown that ammonium nitrate (NH4NO3) plays an important role in enhancing the Fast SCR reaction at transient low exhaust gas temperature conditions.

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