Study on steady and transient characteristics of urea-SCR system for diesel engine

Lei Jiang; Yun Shan Ge; Yan Ding; Zhi Hua Liu; Jian Wei Tan; Ke Wei You

Study on steady and transient characteristics of urea-SCR system for diesel engine

Lei Jiang^*, Yun Shan Ge, Yan Ding, Zhi Hua Liu, Jian Wei Tan, Ke Wei You

^*Corresponding author for this work

School of Mechanical Engineering

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

11 Citations (Scopus)

Abstract

The experimental study was carried out on the engine test bench for the independently developed urea-SCR aftertreatment system according to the European steady state cycle. Its steady emission characteristics of gaseous pollutions and particulate matter were obtained. For transient state conditions, the correction factors were proposed based on relevant studies. Study results reveal that the catalyst temperature and space velocity are key factors for urea-SCR system performance, and their importance varies as engine operation conditions; urea-SCR reduces HC and NO_x emissions, but causing CO emission increasing meantime; the vanadium based SCR catalyst reduces partially PM emission and changes PM size distribution; introduction of load ramp ratio may correct appropriately the transient NO_x emissions from the engine, thus lessening the NH₃ slip effectively.

Original language	English
Pages (from-to)	38-42
Number of pages	5
Journal	Neiranji Gongcheng/Chinese Internal Combustion Engine Engineering
Volume	31
Issue number	6
Publication status	Published - Dec 2010

Keywords

Diesel engine
IC engine
Particulate size distribution
Selective catalyst reduction (SCR)
Transient characteristic
Urea

Cite this

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title = "Study on steady and transient characteristics of urea-SCR system for diesel engine",

abstract = "The experimental study was carried out on the engine test bench for the independently developed urea-SCR aftertreatment system according to the European steady state cycle. Its steady emission characteristics of gaseous pollutions and particulate matter were obtained. For transient state conditions, the correction factors were proposed based on relevant studies. Study results reveal that the catalyst temperature and space velocity are key factors for urea-SCR system performance, and their importance varies as engine operation conditions; urea-SCR reduces HC and NOx emissions, but causing CO emission increasing meantime; the vanadium based SCR catalyst reduces partially PM emission and changes PM size distribution; introduction of load ramp ratio may correct appropriately the transient NOx emissions from the engine, thus lessening the NH3 slip effectively.",

keywords = "Diesel engine, IC engine, Particulate size distribution, Selective catalyst reduction (SCR), Transient characteristic, Urea",

author = "Lei Jiang and Ge, {Yun Shan} and Yan Ding and Liu, {Zhi Hua} and Tan, {Jian Wei} and You, {Ke Wei}",

year = "2010",

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language = "English",

volume = "31",

pages = "38--42",

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

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TY - JOUR

T1 - Study on steady and transient characteristics of urea-SCR system for diesel engine

AU - Jiang, Lei

AU - Ge, Yun Shan

AU - Ding, Yan

AU - Liu, Zhi Hua

AU - Tan, Jian Wei

AU - You, Ke Wei

PY - 2010/12

Y1 - 2010/12

N2 - The experimental study was carried out on the engine test bench for the independently developed urea-SCR aftertreatment system according to the European steady state cycle. Its steady emission characteristics of gaseous pollutions and particulate matter were obtained. For transient state conditions, the correction factors were proposed based on relevant studies. Study results reveal that the catalyst temperature and space velocity are key factors for urea-SCR system performance, and their importance varies as engine operation conditions; urea-SCR reduces HC and NOx emissions, but causing CO emission increasing meantime; the vanadium based SCR catalyst reduces partially PM emission and changes PM size distribution; introduction of load ramp ratio may correct appropriately the transient NOx emissions from the engine, thus lessening the NH3 slip effectively.

AB - The experimental study was carried out on the engine test bench for the independently developed urea-SCR aftertreatment system according to the European steady state cycle. Its steady emission characteristics of gaseous pollutions and particulate matter were obtained. For transient state conditions, the correction factors were proposed based on relevant studies. Study results reveal that the catalyst temperature and space velocity are key factors for urea-SCR system performance, and their importance varies as engine operation conditions; urea-SCR reduces HC and NOx emissions, but causing CO emission increasing meantime; the vanadium based SCR catalyst reduces partially PM emission and changes PM size distribution; introduction of load ramp ratio may correct appropriately the transient NOx emissions from the engine, thus lessening the NH3 slip effectively.

KW - Diesel engine

KW - IC engine

KW - Particulate size distribution

KW - Selective catalyst reduction (SCR)

KW - Transient characteristic

KW - Urea

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AN - SCOPUS:78651441544

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JO - Neiranji Gongcheng/Chinese Internal Combustion Engine Engineering

JF - Neiranji Gongcheng/Chinese Internal Combustion Engine Engineering

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Study on steady and transient characteristics of urea-SCR system for diesel engine

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Keywords

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