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Summary & Details

Analysis of NOx Purification Performance of Urea SCR Catalyst in the Process of Use by Emissions Measurement System for Heavy-Duty Vehicles Using NOx Sensor : Consideration of Factors Affecting NOx Purification Performance

NOxセンサを用いた重量車排出ガス計測システムによる尿素SCR触媒の使用過程におけるNOx浄化性能の解析 ─NOx浄化性能に影響を及ぼす要因の考察─

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Format: PDF

Price: Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880

Publication code: 20254013

Paper/Info type: Journal of Society of Automotive Engineers of Japan

Vol.79 No.1

Pages: 92-98(Total 7 p)

Date of publication: Jan 2025

Publisher: JSAE

Language: Japanese

Detailed Information

Category(J)	ホットトピックス Translation
Category(E)	Hot Topics
Author(J)	1) 山本敏朗
Author(E)	1) Toshiro Yamamoto
Affiliation(J)	1) 自動車技術総合機構
Abstract(J)	平成28年排出ガス規制適合車で主流の銅系ゼオライトSCR触媒のNOx浄化性能を、積算走行距離が増加する使用過程において、シャシダイナモメータ試験および実路走行試験により継続的に調査を行っている。調査データから、NOx浄化率、空間速度等のSCR触媒のNOx浄化性能に影響を及ぼす要因について考察した。 Translation
Abstract(E)	The NOx purification performance of copper-based zeolite SCR catalysts, which are mainstream in vehicles compliant with the 2016 emission regulations, is continuously investigated through chassis dynamometer tests and actual road tests in the process of use as the accumulated mileage increased. Based on the survey data, factors affecting the NOx purification performance of SCR catalysts, such as NOx purification rate and space velocity, are discussed. As a result, it was found that when the NOx purification performance of the urea SCR catalyst deteriorates during use, the decreasing tendency of NOx purification rate with increasing space velocity was found to increase.

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