Experimental study on effect of fuel injection strategies and EGR on diesel engine low temperature combustion

Zhi Gang Chai; Fu Jun Zhang; Bo Lan Liu; Ying Huang; Tao Cui; Hong Yun Pan

doi:10.13949/j.cnki.nrjgc.2016.05.008

Experimental study on effect of fuel injection strategies and EGR on diesel engine low temperature combustion

Zhi Gang Chai, Fu Jun Zhang, Bo Lan Liu, Ying Huang, Tao Cui, Hong Yun Pan

School of Mechanical Engineering

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

4 Citations (Scopus)

Abstract

In order to study the effect of fuel injection strategies and EGR rate on diesel engine low temperature combustion performance and emissions, experimental study was carried out on an electronically controlled common rail diesel engine. The result shows that raised EGR rate makes specific heat capacity increase, peak pressure and average temperature in cylinder decrease and ignition delay extend, which leads to lower NO_x emissions; but smoke emission rises due to reduced intake oxygen density and oxidation process. At medium and small EGR rates, increasing fuel injection pressure can accelerate the mixing of fuel and air and decrease smoke emission. When the combustion phase CA50 is retarded to after 7° crank angle (ATDC), smoke emission increases because of decreased combustion efficiency and enlarged diffusion combustion period.

Original language	English
Pages (from-to)	45-49 and 55
Journal	Neiranji Gongcheng/Chinese Internal Combustion Engine Engineering
Volume	37
Issue number	5
DOIs	https://doi.org/10.13949/j.cnki.nrjgc.2016.05.008
Publication status	Published - 15 Oct 2016

Keywords

Combustion phase
Exhaust gas recirculation
IC engine
Low temperature combustion

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10.13949/j.cnki.nrjgc.2016.05.008

Cite this

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title = "Experimental study on effect of fuel injection strategies and EGR on diesel engine low temperature combustion",

abstract = "In order to study the effect of fuel injection strategies and EGR rate on diesel engine low temperature combustion performance and emissions, experimental study was carried out on an electronically controlled common rail diesel engine. The result shows that raised EGR rate makes specific heat capacity increase, peak pressure and average temperature in cylinder decrease and ignition delay extend, which leads to lower NOx emissions; but smoke emission rises due to reduced intake oxygen density and oxidation process. At medium and small EGR rates, increasing fuel injection pressure can accelerate the mixing of fuel and air and decrease smoke emission. When the combustion phase CA50 is retarded to after 7° crank angle (ATDC), smoke emission increases because of decreased combustion efficiency and enlarged diffusion combustion period.",

keywords = "Combustion phase, Exhaust gas recirculation, IC engine, Low temperature combustion",

author = "Chai, {Zhi Gang} and Zhang, {Fu Jun} and Liu, {Bo Lan} and Ying Huang and Tao Cui and Pan, {Hong Yun}",

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doi = "10.13949/j.cnki.nrjgc.2016.05.008",

language = "English",

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TY - JOUR

T1 - Experimental study on effect of fuel injection strategies and EGR on diesel engine low temperature combustion

AU - Chai, Zhi Gang

AU - Zhang, Fu Jun

AU - Liu, Bo Lan

AU - Huang, Ying

AU - Cui, Tao

AU - Pan, Hong Yun

PY - 2016/10/15

Y1 - 2016/10/15

N2 - In order to study the effect of fuel injection strategies and EGR rate on diesel engine low temperature combustion performance and emissions, experimental study was carried out on an electronically controlled common rail diesel engine. The result shows that raised EGR rate makes specific heat capacity increase, peak pressure and average temperature in cylinder decrease and ignition delay extend, which leads to lower NOx emissions; but smoke emission rises due to reduced intake oxygen density and oxidation process. At medium and small EGR rates, increasing fuel injection pressure can accelerate the mixing of fuel and air and decrease smoke emission. When the combustion phase CA50 is retarded to after 7° crank angle (ATDC), smoke emission increases because of decreased combustion efficiency and enlarged diffusion combustion period.

AB - In order to study the effect of fuel injection strategies and EGR rate on diesel engine low temperature combustion performance and emissions, experimental study was carried out on an electronically controlled common rail diesel engine. The result shows that raised EGR rate makes specific heat capacity increase, peak pressure and average temperature in cylinder decrease and ignition delay extend, which leads to lower NOx emissions; but smoke emission rises due to reduced intake oxygen density and oxidation process. At medium and small EGR rates, increasing fuel injection pressure can accelerate the mixing of fuel and air and decrease smoke emission. When the combustion phase CA50 is retarded to after 7° crank angle (ATDC), smoke emission increases because of decreased combustion efficiency and enlarged diffusion combustion period.

KW - Combustion phase

KW - Exhaust gas recirculation

KW - IC engine

KW - Low temperature combustion

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DO - 10.13949/j.cnki.nrjgc.2016.05.008

M3 - Article

AN - SCOPUS:85009752513

SN - 1000-0925

VL - 37

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JO - Neiranji Gongcheng/Chinese Internal Combustion Engine Engineering

JF - Neiranji Gongcheng/Chinese Internal Combustion Engine Engineering

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Experimental study on effect of fuel injection strategies and EGR on diesel engine low temperature combustion

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