EGR gas composition effects on ignition delays in diesel combustion

Kobashi, Yoshimitsu; Todokoro, Masaki; Shibata, Gen; Ogawa, Hideyuki; Mori, Toshihiro; Imai, Daichi

doi:10.1016/j.fuel.2020.118730

Cited by 15 publications

(2 citation statements)

References 29 publications

(29 reference statements)

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“…Ozone was shown to have the most significant impact, whereas NO 2 had the least. Kobashi et al 10 found that adding NO x to the intake air of a DICI engine fueled with diesel can reduce the ignition delay. The ignition delay decreased as the NO x concentration increased.…”

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on the Effect of NO₂ on n-Butanol/Biodiesel Dual-Fuel Combustion in a Compression Ignition Engine

et al. 2022

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Nitrogen dioxide (NO 2 ) is an active species of exhaust gas recirculation gas, and it has a significant impact on the autoignition and combustion processes of fuels. This study presented a comprehensive investigation of the effect of NO 2 on the combustion characteristics of the n -butanol/biodiesel dual fuel. Experiments were conducted on a single-cylinder engine with 0, 100, 200, and 400 v/v ppm NO 2 addition at two fuel injection ratios. The findings of the experiments indicated that adding NO 2 resulted in an earlier start of heat release and an increase in peak in-cylinder pressure as compared to experiments where no NO 2 was added. The evolutions of n -butanol, biodiesel, and OH radicals were evaluated using the computational fluid dynamics software coupled with the n -butanol–biodiesel–NO 2 mechanism. The results revealed that when 400 v/v ppm NO 2 was added, the consumption of n -butanol and biodiesel occurred earlier, and the formation of OH radicals was approximately an order of magnitude higher before the biodiesel was injected. Furthermore, reaction rate and flux analyses were performed to understand the effect of NO 2 addition on the reaction process. When NO 2 was added, 35% of the HO 2 radicals reacted with NO which converted from NO 2 via the reaction NO + HO 2 ⇌ NO 2 + OH, promoting the formation of OH radicals in the reaction system. The addition of NO 2 can also enhance the consumption of CH 3 radicals via the reaction CH 3 + HO 2 ⇌ CH 3 O + OH.

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Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on the Effect of NO₂ on n-Butanol/Biodiesel Dual-Fuel Combustion in a Compression Ignition Engine

et al. 2022

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“…Fuel properties of biodiesel such as cetane number, viscosity, density and flash point are higher than diesel fuel. In recent studies, it has been revealed that fuel properties have a significant effect on ignition delay and mixture formation, which are important factors affecting emissions [3]. The quality of combustion in the cylinder is directly related to the physical and chemical properties of the fuel.…”

Section: Introductionmentioning

confidence: 99%

Optimization of Thermophysical Properties, Combustion Performance and Harmful Exhaust Gases of Biodiesel Fuel With Nanoparticle Additives

CELIK¹,

BAYINDIRLI²

2022

JESR

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Increasing use of diesel products causes decrease of oil reserves, global warming, increase in the world average and adverse effects on human health and the environment. Emissions from combustion in engines are directly related to the quality, properties and combustion characteristics of the fuel. Since the physical and chemical properties of the fuel affect the atomization characteristics, it is important for increasing the combustion efficiency. The most important fuel properties affecting the combustion of diesel fuel are cetane number, viscosity, density and calorific value. There are many applications in improving the chemical and physical properties of fuel. One of them is nanoparticle (NPs) additives adding in fuel. In this study, it was aimed to improve fuel properties with optimum additive ratio by adding CeO2, TiO2 and Co3O4 nanoparticle additives into biodiesel which are produced from cotton and canola oil. The effects of NPs additives in fuel properties such as viscosity, density, lower calorific value and flash points were investigated.

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Impact of Combined Effects of Injection Pressure and EGR on Modified Stationary Engine Fuelled with Biodiesel Blend Made of Waste Feedstock Oils

et al. 2023

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EGR gas composition effects on ignition delays in diesel combustion

Cited by 15 publications

References 29 publications

Experimental and Numerical Study on the Effect of NO₂ on n-Butanol/Biodiesel Dual-Fuel Combustion in a Compression Ignition Engine

Experimental and Numerical Study on the Effect of NO₂ on n-Butanol/Biodiesel Dual-Fuel Combustion in a Compression Ignition Engine

Optimization of Thermophysical Properties, Combustion Performance and Harmful Exhaust Gases of Biodiesel Fuel With Nanoparticle Additives

Impact of Combined Effects of Injection Pressure and EGR on Modified Stationary Engine Fuelled with Biodiesel Blend Made of Waste Feedstock Oils

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EGR gas composition effects on ignition delays in diesel combustion

Cited by 15 publications

References 29 publications

Experimental and Numerical Study on the Effect of NO2 on n-Butanol/Biodiesel Dual-Fuel Combustion in a Compression Ignition Engine

Experimental and Numerical Study on the Effect of NO2 on n-Butanol/Biodiesel Dual-Fuel Combustion in a Compression Ignition Engine

Optimization of Thermophysical Properties, Combustion Performance and Harmful Exhaust Gases of Biodiesel Fuel With Nanoparticle Additives

Impact of Combined Effects of Injection Pressure and EGR on Modified Stationary Engine Fuelled with Biodiesel Blend Made of Waste Feedstock Oils

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Experimental and Numerical Study on the Effect of NO₂ on n-Butanol/Biodiesel Dual-Fuel Combustion in a Compression Ignition Engine

Experimental and Numerical Study on the Effect of NO₂ on n-Butanol/Biodiesel Dual-Fuel Combustion in a Compression Ignition Engine