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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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.

Original languageEnglish
Title of host publicationSAE Technical Papers
DOIs
Publication statusPublished - 2008
EventPowertrains, Fuels and Lubricants Meeting - Rosemont, IL
Duration: 2008 Oct 62008 Oct 9

Other

OtherPowertrains, Fuels and Lubricants Meeting
CityRosemont, IL
Period08/10/608/10/9

Fingerprint

Thyristors
Urea
Adsorption
Catalysts
Exhaust gases
Diesel engines
Temperature
Gases

ASJC Scopus subject areas

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

Cite this

Murata, Y., Tokui, S., Watanabe, S., Daisho, Y., Suzuki, H., & Ishii, H. (2008). Improvement of NOx reduction rate of urea-SCR system by NH3 adsorption quantity control. In SAE Technical Papers https://doi.org/10.4271/2008-01-2498

Improvement of NOx reduction rate of urea-SCR system by NH3 adsorption quantity control. / Murata, Yutaka; Tokui, Sadahito; Watanabe, Soichiro; Daisho, Yasuhiro; Suzuki, Hisakazu; Ishii, Hajime.

SAE Technical Papers. 2008.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Murata, Y, Tokui, S, Watanabe, S, Daisho, Y, Suzuki, H & Ishii, H 2008, Improvement of NOx reduction rate of urea-SCR system by NH3 adsorption quantity control. in SAE Technical Papers. Powertrains, Fuels and Lubricants Meeting, Rosemont, IL, 08/10/6. https://doi.org/10.4271/2008-01-2498
Murata Y, Tokui S, Watanabe S, Daisho Y, Suzuki H, Ishii H. Improvement of NOx reduction rate of urea-SCR system by NH3 adsorption quantity control. In SAE Technical Papers. 2008 https://doi.org/10.4271/2008-01-2498
Murata, Yutaka ; Tokui, Sadahito ; Watanabe, Soichiro ; Daisho, Yasuhiro ; Suzuki, Hisakazu ; Ishii, Hajime. / Improvement of NOx reduction rate of urea-SCR system by NH3 adsorption quantity control. SAE Technical Papers. 2008.
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