Improvement of NOx reduction rate of urea-SCR system by NH3 adsorption quantity control

Yutaka Murata; Sadahito Tokui; Soichiro Watanabe; Yasuhiro Daisho; Hisakazu Suzuki; Hajime Ishii

doi:10.4271/2008-01-2498

Improvement of NO_x reduction rate of urea-SCR system by NH3 adsorption quantity control

Yutaka Murata^*, Sadahito Tokui, Soichiro Watanabe, Yasuhiro Daisho, Hisakazu Suzuki, Hajime Ishii

^*Corresponding author for this work

Research Organization for Next Generation Vehicles

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

9 Citations (Scopus)

Abstract

A urea SCR system was combined with a DPF system to reduce NO_x and PM in a four liters turbocharged with intercooler diesel engine. Significant reduction in NO_x was observed at low exhaust gas temperatures by increasing NH₃ adsorption quantity in the SCR catalyst. Control logic of the NH₃ adsorption quantity for transient operation was developed based on the NH₃ adsorption characteristics on the SCR catalyst. It has been shown that NO_x can be reduced by 75% at the average SCR inlet gas temperature of 158 deg.C by adopting the NH₃ adsorption quantity control in the JE05 Mode.

Original language	English
Title of host publication	SAE Technical Papers
DOIs	https://doi.org/10.4271/2008-01-2498
Publication status	Published - 2008
Event	Powertrains, Fuels and Lubricants Meeting - Rosemont, IL Duration: 2008 Oct 6 → 2008 Oct 9

Other

Other	Powertrains, Fuels and Lubricants Meeting
City	Rosemont, IL
Period	08/10/6 → 08/10/9

ASJC Scopus subject areas

Automotive Engineering
Safety, Risk, Reliability and Quality
Pollution
Industrial and Manufacturing Engineering

Access to Document

10.4271/2008-01-2498

Cite this

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title = "Improvement of NOx reduction rate of urea-SCR system by NH3 adsorption quantity control",

abstract = "A urea SCR system was combined with a DPF system to reduce NOx and PM in a four liters turbocharged with intercooler diesel engine. Significant reduction in NOx was observed at low exhaust gas temperatures by increasing NH3 adsorption quantity in the SCR catalyst. Control logic of the NH3 adsorption quantity for transient operation was developed based on the NH3 adsorption characteristics on the SCR catalyst. It has been shown that NOx can be reduced by 75% at the average SCR inlet gas temperature of 158 deg.C by adopting the NH3 adsorption quantity control in the JE05 Mode.",

author = "Yutaka Murata and Sadahito Tokui and Soichiro Watanabe and Yasuhiro Daisho and Hisakazu Suzuki and Hajime Ishii",

year = "2008",

doi = "10.4271/2008-01-2498",

language = "English",

booktitle = "SAE Technical Papers",

note = "Powertrains, Fuels and Lubricants Meeting ; Conference date: 06-10-2008 Through 09-10-2008",

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T1 - Improvement of NOx reduction rate of urea-SCR system by NH3 adsorption quantity control

AU - Murata, Yutaka

AU - Tokui, Sadahito

AU - Watanabe, Soichiro

AU - Daisho, Yasuhiro

AU - Suzuki, Hisakazu

AU - Ishii, Hajime

PY - 2008

Y1 - 2008

N2 - A urea SCR system was combined with a DPF system to reduce NOx and PM in a four liters turbocharged with intercooler diesel engine. Significant reduction in NOx was observed at low exhaust gas temperatures by increasing NH3 adsorption quantity in the SCR catalyst. Control logic of the NH3 adsorption quantity for transient operation was developed based on the NH3 adsorption characteristics on the SCR catalyst. It has been shown that NOx can be reduced by 75% at the average SCR inlet gas temperature of 158 deg.C by adopting the NH3 adsorption quantity control in the JE05 Mode.

AB - A urea SCR system was combined with a DPF system to reduce NOx and PM in a four liters turbocharged with intercooler diesel engine. Significant reduction in NOx was observed at low exhaust gas temperatures by increasing NH3 adsorption quantity in the SCR catalyst. Control logic of the NH3 adsorption quantity for transient operation was developed based on the NH3 adsorption characteristics on the SCR catalyst. It has been shown that NOx can be reduced by 75% at the average SCR inlet gas temperature of 158 deg.C by adopting the NH3 adsorption quantity control in the JE05 Mode.

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DO - 10.4271/2008-01-2498

M3 - Conference contribution

BT - SAE Technical Papers

T2 - Powertrains, Fuels and Lubricants Meeting

Y2 - 6 October 2008 through 9 October 2008

ER -