Study on Factors of Performance Degradation of Urea SCR System installed in Heavy-duty Vehicles during the Use Process
重量車に搭載された尿素SCRシステムの使用過程における性能低下要因に関する研究
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- Available on the other site
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- Publication code
- 20264394
- Paper/Info type
- JSAE Transaction
Vol.57 No.3
- Pages
- 542-548(Total 7 p)
- Date of publication
- May 2026
- Publisher
- JSAE
- Language
- Japanese
Detailed Information
| Category(J) | 論文 Translation |
|---|---|
| Category(E) | Paper |
| Author(J) | 1) 山本 敏朗 |
| Author(E) | 1) Toshiro Yamamoto |
| Affiliation(J) | 1) (独)自動車技術総合機構 交通安全環境研究所 |
| Abstract(J) | 平成28年排出ガス規制適合車に導入された尿素SCRシステム（銅系触媒）のNOx低減性能等のデータを，積算走行距離の増加に伴いシャシダイナモメータ試験等を実施して継続的に収集した．これを基に，使用過程において尿素SCRシステムの排出ガス低減性能に影響を及ぼす要因を分析し，性能低下の実態把握を行った． Translation |
| Abstract(E) | Data on the NOx reduction performance of urea SCR systems (copper-based catalyst) installed in vehicles that comply with the 2016 exhaust gas regulations was collected continuously by conducting chassis dynamometer tests etc. as the cumulative mileage increased. Based on this, the factors that affect the exhaust gas reduction performance of the urea SCR system during use were analyzed, and the actual performance degradation was grasped. During use, a decrease in the SCR catalyst gas temperature was confirmed, which coincided with a downward trend in the NOx purification rate and was therefore considered to be factors in the deterioration of performance. |
