An Experimental Study of EGR-Controlled Stoichiometric Dual-fuel Compression Ignition (SDCI) Combustion

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An Experimental Study of EGR-Controlled Stoichiometric Dual-fuel Compression Ignition (SDCI) Combustion. / Ma, Xiao; Qi, Yunliang; Wang, Zhi; Xu, Hongming; Wang, Jian-xin.

In: SAE Technical Paper 2014-01-1307, 01.04.2014.

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@article{6ddc2b50f4804efbb87d31023e7ab97e,
title = "An Experimental Study of EGR-Controlled Stoichiometric Dual-fuel Compression Ignition (SDCI) Combustion",
abstract = "Using EGR instead of throttle to control the load of a stoichiometric dual-fuel dieseline (diesel and gasoline) compression ignition (SDCI) engine with three-way catalyst (TWC) aftertreatment is considered a promising technology to address the challenges of fuel consumption and emissions in future internal combustion engines. High-speed imaging is used to record the flame signal in a single-cylinder optical engine with a PFI+DI dual injection system. The premixed blue flame is identified and separated using green and blue channels in RGB images. The effects of injection timing on SDCI combustion are studied. An earlier injection strategy is found to be ideal for soot reduction; however, the ignition-injection decoupling problem results in difficulties in combustion control. It is also found that a split injection strategy has advantages in soot reduction and thermal efficiency. Only 10% of the total diesel fuel for the main injection can advance the combustion phase significantly and the combustion duration can be reduced by approximate 50%. It is observed that the soot formation tendency deduced from the image results shows the potential of further soot reduction compared with the optimized single injection case.",
author = "Xiao Ma and Yunliang Qi and Zhi Wang and Hongming Xu and Jian-xin Wang",
year = "2014",
month = apr,
day = "1",
doi = "10.4271/2014-01-1307",
language = "English",
journal = "SAE Technical Papers",
issn = "0148-7191",
publisher = "SAE International",
note = "SAE 2014 World Congress and Exhibition ; Conference date: 08-04-2014 Through 10-04-2014",

}

RIS

TY - JOUR

T1 - An Experimental Study of EGR-Controlled Stoichiometric Dual-fuel Compression Ignition (SDCI) Combustion

AU - Ma, Xiao

AU - Qi, Yunliang

AU - Wang, Zhi

AU - Xu, Hongming

AU - Wang, Jian-xin

PY - 2014/4/1

Y1 - 2014/4/1

N2 - Using EGR instead of throttle to control the load of a stoichiometric dual-fuel dieseline (diesel and gasoline) compression ignition (SDCI) engine with three-way catalyst (TWC) aftertreatment is considered a promising technology to address the challenges of fuel consumption and emissions in future internal combustion engines. High-speed imaging is used to record the flame signal in a single-cylinder optical engine with a PFI+DI dual injection system. The premixed blue flame is identified and separated using green and blue channels in RGB images. The effects of injection timing on SDCI combustion are studied. An earlier injection strategy is found to be ideal for soot reduction; however, the ignition-injection decoupling problem results in difficulties in combustion control. It is also found that a split injection strategy has advantages in soot reduction and thermal efficiency. Only 10% of the total diesel fuel for the main injection can advance the combustion phase significantly and the combustion duration can be reduced by approximate 50%. It is observed that the soot formation tendency deduced from the image results shows the potential of further soot reduction compared with the optimized single injection case.

AB - Using EGR instead of throttle to control the load of a stoichiometric dual-fuel dieseline (diesel and gasoline) compression ignition (SDCI) engine with three-way catalyst (TWC) aftertreatment is considered a promising technology to address the challenges of fuel consumption and emissions in future internal combustion engines. High-speed imaging is used to record the flame signal in a single-cylinder optical engine with a PFI+DI dual injection system. The premixed blue flame is identified and separated using green and blue channels in RGB images. The effects of injection timing on SDCI combustion are studied. An earlier injection strategy is found to be ideal for soot reduction; however, the ignition-injection decoupling problem results in difficulties in combustion control. It is also found that a split injection strategy has advantages in soot reduction and thermal efficiency. Only 10% of the total diesel fuel for the main injection can advance the combustion phase significantly and the combustion duration can be reduced by approximate 50%. It is observed that the soot formation tendency deduced from the image results shows the potential of further soot reduction compared with the optimized single injection case.

U2 - 10.4271/2014-01-1307

DO - 10.4271/2014-01-1307

M3 - Article

JO - SAE Technical Papers

JF - SAE Technical Papers

SN - 0148-7191

M1 - 2014-01-1307

T2 - SAE 2014 World Congress and Exhibition

Y2 - 8 April 2014 through 10 April 2014

ER -