Study on feedback control parameters of EGR system for diesel engine

Xiao Hui An; Bo Lan Liu; Fu Jun Zhang; Ji Peng Li

doi:10.13949/j.cnki.nrjgc.2015.03.010

Study on feedback control parameters of EGR system for diesel engine

Xiao Hui An, Bo Lan Liu^*, Fu Jun Zhang, Ji Peng Li

^*Corresponding author for this work

School of Mechanical Engineering

Beijing Institute of Technology

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

Abstract

In order to study effect of EGR on NO_x emissions in diesel engine with different intake charge components, a simulation model was built up based on GT-Power software and verified by experimental data.Using the model, the intake charge states in different EGR rates were analyzed, further to find NO_x emissions varying trend with intake flow variation with taking intake O₂ mass fraction and EGR rate as the control objectives respectively. Simulation results show that while the intake flow constant NO_x emissions are mainly influenced by O₂ mass fraction, dilution effect is far more than thermodynamics and chemical effects. Under transient conditions, owing to selection of EGR rate as the control parameter is limited, the intake O₂ mass fraction has closer correlation with NO_x emissions, it is more suitable to be selected as control parameter reflecting NO_x emission formation.

Original language	English
Pages (from-to)	58-62
Number of pages	5
Journal	Neiranji Gongcheng/Chinese Internal Combustion Engine Engineering
Volume	36
Issue number	3
DOIs	https://doi.org/10.13949/j.cnki.nrjgc.2015.03.010
Publication status	Published - 15 Jun 2015

Keywords

Diesel engine
Exhaust gas recirculation(EGR)
Feedback parameter
IC engine
NO emissions
Oxygen mass fraction

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10.13949/j.cnki.nrjgc.2015.03.010

Cite this

@article{cb2f67e0d2a249adaf13379cff797260,

title = "Study on feedback control parameters of EGR system for diesel engine",

abstract = "In order to study effect of EGR on NOx emissions in diesel engine with different intake charge components, a simulation model was built up based on GT-Power software and verified by experimental data.Using the model, the intake charge states in different EGR rates were analyzed, further to find NOx emissions varying trend with intake flow variation with taking intake O2 mass fraction and EGR rate as the control objectives respectively. Simulation results show that while the intake flow constant NOx emissions are mainly influenced by O2 mass fraction, dilution effect is far more than thermodynamics and chemical effects. Under transient conditions, owing to selection of EGR rate as the control parameter is limited, the intake O2 mass fraction has closer correlation with NOx emissions, it is more suitable to be selected as control parameter reflecting NOx emission formation.",

keywords = "Diesel engine, Exhaust gas recirculation(EGR), Feedback parameter, IC engine, NO emissions, Oxygen mass fraction",

author = "An, {Xiao Hui} and Liu, {Bo Lan} and Zhang, {Fu Jun} and Li, {Ji Peng}",

year = "2015",

month = jun,

day = "15",

doi = "10.13949/j.cnki.nrjgc.2015.03.010",

language = "English",

volume = "36",

pages = "58--62",

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

issn = "1000-0925",

publisher = "Chinese Society for Internal Combustion Engines",

number = "3",

}

TY - JOUR

T1 - Study on feedback control parameters of EGR system for diesel engine

AU - An, Xiao Hui

AU - Liu, Bo Lan

AU - Zhang, Fu Jun

AU - Li, Ji Peng

PY - 2015/6/15

Y1 - 2015/6/15

N2 - In order to study effect of EGR on NOx emissions in diesel engine with different intake charge components, a simulation model was built up based on GT-Power software and verified by experimental data.Using the model, the intake charge states in different EGR rates were analyzed, further to find NOx emissions varying trend with intake flow variation with taking intake O2 mass fraction and EGR rate as the control objectives respectively. Simulation results show that while the intake flow constant NOx emissions are mainly influenced by O2 mass fraction, dilution effect is far more than thermodynamics and chemical effects. Under transient conditions, owing to selection of EGR rate as the control parameter is limited, the intake O2 mass fraction has closer correlation with NOx emissions, it is more suitable to be selected as control parameter reflecting NOx emission formation.

AB - In order to study effect of EGR on NOx emissions in diesel engine with different intake charge components, a simulation model was built up based on GT-Power software and verified by experimental data.Using the model, the intake charge states in different EGR rates were analyzed, further to find NOx emissions varying trend with intake flow variation with taking intake O2 mass fraction and EGR rate as the control objectives respectively. Simulation results show that while the intake flow constant NOx emissions are mainly influenced by O2 mass fraction, dilution effect is far more than thermodynamics and chemical effects. Under transient conditions, owing to selection of EGR rate as the control parameter is limited, the intake O2 mass fraction has closer correlation with NOx emissions, it is more suitable to be selected as control parameter reflecting NOx emission formation.

KW - Diesel engine

KW - Exhaust gas recirculation(EGR)

KW - Feedback parameter

KW - IC engine

KW - NO emissions

KW - Oxygen mass fraction

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U2 - 10.13949/j.cnki.nrjgc.2015.03.010

DO - 10.13949/j.cnki.nrjgc.2015.03.010

M3 - Article

AN - SCOPUS:84940973810

SN - 1000-0925

VL - 36

SP - 58

EP - 62

JO - Neiranji Gongcheng/Chinese Internal Combustion Engine Engineering

JF - Neiranji Gongcheng/Chinese Internal Combustion Engine Engineering

IS - 3

ER -

Study on feedback control parameters of EGR system for diesel engine

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