Study on emission characteristics of urea-SCR aftertreatment system of diesel engine

Lei Jiang; Yun Shan Ge; Pu Li; Zhi Hua Liu

Study on emission characteristics of urea-SCR aftertreatment system of diesel engine

Lei Jiang^*, Yun Shan Ge, Pu Li, Zhi Hua Liu

^*Corresponding author for this work

School of Mechanical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

12 Citations (Scopus)

Abstract

The performance of urea-SCR aftertreatment system is affected by many factors, such as spray type, position of injection, air-blast system and characteristics of catalyst, etc. The study of urea-SCR system performance made on engine test bench reveals that spray type and direction of injection have a great influence on urea solution atomization and spatial distribution; distance between the spray nozzle and the catalyst the greater, the conversion efficiency the better; for the urea-SCR system used here, air-blast pressure of 0.2 MPa is suitable; NO_x conversion efficiency increases with catalyst temperature rising; the catalyst temperature the lower, its storing ammonia capacity the greater; and the SCR may affect ratio of NO and NO₂ and concentration of HC and CO.

Original language	English
Pages (from-to)	30-35
Number of pages	6
Journal	Neiranji Gongcheng/Chinese Internal Combustion Engine Engineering
Volume	31
Issue number	5
Publication status	Published - Oct 2010

Keywords

Conversion efficiency
IC engine
NO
SCR
Urea

Cite this

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title = "Study on emission characteristics of urea-SCR aftertreatment system of diesel engine",

abstract = "The performance of urea-SCR aftertreatment system is affected by many factors, such as spray type, position of injection, air-blast system and characteristics of catalyst, etc. The study of urea-SCR system performance made on engine test bench reveals that spray type and direction of injection have a great influence on urea solution atomization and spatial distribution; distance between the spray nozzle and the catalyst the greater, the conversion efficiency the better; for the urea-SCR system used here, air-blast pressure of 0.2 MPa is suitable; NOx conversion efficiency increases with catalyst temperature rising; the catalyst temperature the lower, its storing ammonia capacity the greater; and the SCR may affect ratio of NO and NO2 and concentration of HC and CO.",

keywords = "Conversion efficiency, IC engine, NO, SCR, Urea",

author = "Lei Jiang and Ge, {Yun Shan} and Pu Li and Liu, {Zhi Hua}",

year = "2010",

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language = "English",

volume = "31",

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journal = "Neiranji Gongcheng/Chinese Internal Combustion Engine Engineering",

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publisher = "Chinese Society for Internal Combustion Engines",

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T1 - Study on emission characteristics of urea-SCR aftertreatment system of diesel engine

AU - Jiang, Lei

AU - Ge, Yun Shan

AU - Li, Pu

AU - Liu, Zhi Hua

PY - 2010/10

Y1 - 2010/10

N2 - The performance of urea-SCR aftertreatment system is affected by many factors, such as spray type, position of injection, air-blast system and characteristics of catalyst, etc. The study of urea-SCR system performance made on engine test bench reveals that spray type and direction of injection have a great influence on urea solution atomization and spatial distribution; distance between the spray nozzle and the catalyst the greater, the conversion efficiency the better; for the urea-SCR system used here, air-blast pressure of 0.2 MPa is suitable; NOx conversion efficiency increases with catalyst temperature rising; the catalyst temperature the lower, its storing ammonia capacity the greater; and the SCR may affect ratio of NO and NO2 and concentration of HC and CO.

AB - The performance of urea-SCR aftertreatment system is affected by many factors, such as spray type, position of injection, air-blast system and characteristics of catalyst, etc. The study of urea-SCR system performance made on engine test bench reveals that spray type and direction of injection have a great influence on urea solution atomization and spatial distribution; distance between the spray nozzle and the catalyst the greater, the conversion efficiency the better; for the urea-SCR system used here, air-blast pressure of 0.2 MPa is suitable; NOx conversion efficiency increases with catalyst temperature rising; the catalyst temperature the lower, its storing ammonia capacity the greater; and the SCR may affect ratio of NO and NO2 and concentration of HC and CO.

KW - Conversion efficiency

KW - IC engine

KW - NO

KW - SCR

KW - Urea

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M3 - Article

AN - SCOPUS:78649286673

SN - 1000-0925

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SP - 30

EP - 35

JO - Neiranji Gongcheng/Chinese Internal Combustion Engine Engineering

JF - Neiranji Gongcheng/Chinese Internal Combustion Engine Engineering

IS - 5

ER -

Study on emission characteristics of urea-SCR aftertreatment system of diesel engine

Abstract

Keywords

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