Reduction in PM and NOX of a diesel engine integrated with n-octanol fuel addition and exhaust gas recirculation

Pan, Mingzhang; Zheng, Zeyuan; Huang, Rong Fung; Zhou, Xiaorong; Huang, Haozhong; Pan, Jiaying; Chen, Zhaohui

doi:10.1016/j.energy.2019.115946

Cited by 36 publications

(3 citation statements)

References 42 publications

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“…Exhaust gas recirculation: A portion of an engine's exhaust gas recirculates back to the engine cylinders [21][22][23][24], resulting in a reduction in peak firing temperature and oxygen concentration area in the combustion chamber, which in turn reduces NO x emissions.…”

Section: Introductionmentioning

confidence: 99%

A Review of the External and Internal Residual Exhaust Gas in the Internal Combustion Engine

Khoa

2022

Energies

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Efficiency and emission reduction are the primary targets of internal combustion engine research due the large number of vehicles in operation and the impact of emissions-related pollution on human and ecosystem health. Harmful components of engine exhaust gases include nitrous oxides (NOx), carbon dioxide, hydrocarbons, and particulate matter. NOx emissions in particular are associated with significant health threats. The recirculation of exhaust gases can reduce NOx emissions and improve engine efficiency when combined with other advanced techniques. On the other hand, the residual exhaust gas also effects on the quality of lubricating engine oil and therefore causes an increase in engine piston ring wear. In this review paper, the effects of external and internal exhaust gas recirculation on the performance and emission characteristics of diesel, gasoline, and alternative fuel engines are summarized and discussed in detail. Because it is difficult to estimate the internal residual exhaust gas in the combustion engine by doing experiments. This review paper introduces control strategies and prediction methods for internal and external exhaust gas recirculation.

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Section: Introductionmentioning

confidence: 99%

A Review of the External and Internal Residual Exhaust Gas in the Internal Combustion Engine

Khoa

2022

Energies

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“…The significant reduction of NO x by 20% retarded the main injection timing by a 2° crank angle (CA), while PM was well below the respective diesel fuel level. Pan et al (2019) integrated n -octanol augmentation and exhaust gas recirculation (EGR) to a diesel engine for concurrent NO x and PM reduction. Soot and particulates were well mitigated by the blended fuel of n -octanol and diesel incorporated with EGR.…”

Section: Introductionmentioning

confidence: 99%

Nanoparticle Components and Number–Size Distribution of Waste Cooking Oil-Based Biodiesel Exhaust Gas from a Diesel Particulate Filter-Equipped Engine

et al. 2022

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An experimental study of the particulate matter (PM)-related emissions from the combustion of waste cooking oil (WCO)-based biodiesel-blended (0%, 30%, and 100% v/v) fuels in a four-cylinder diesel particulate filter (DPF)-equipped engine was carried out. A laboratory-scale DPF under the controlled conditions was installed into an aftertreatment system, and the PM mass and number characteristics were investigated. The combustion analysis based on in-cylinder pressure shows that the added WCO shortened the ignition delay, advanced the combustion ignition, and increased peak pressure values compared to conventional diesel fuel. The WCO increase in specific fuel consumption led to a slight reduction in brake thermal efficiency. The WCO-fueled engine showed reduced PM and total unburned hydrocarbon but increased nitric oxide emission. The nucleation and accumulation were characterized for nanoparticle number and size distribution. The particle number (PN) concentration in total was declined to smaller values when fueling with WCO. In the thermogravimetric analysis, the PM of WCO oxidized to a greater level than that of diesel fuel, which was observed by the weight loss rates during the specified heating program. WCO lowered the elemental carbon (EC) part of PM than diesel fuel. When equipping an exhaust system with DPF, the EC and the total PN drastically reduced while the particle size slightly increased. The use of DPF with the WCO biodiesel mitigated both EC and organic carbon components of the captured particles of the released PM.

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“…Diesel engines are known to emit large amounts of particulate matter (PM) into the atmosphere due to the fuel composition and the non homogeneous mixing, which favours its formation in the fuel-rich regions of the chamber where the temperature is high. In this sense, the addition of oxygenated compounds to diesel fuel has been recognized to reduce PM emissions [1][2][3][4][5]. The use of these additives modifies some fuel properties, such as volatility, cetane index, enthalpy of combustion, etc., which, depending on the operating conditions, affect the fuel consumption and emissions.…”

Section: Introductionmentioning

confidence: 99%

Experimental and simulation study of the high pressure oxidation of dimethyl carbonate

Alexandrino

Millera

Bilbao

et al. 2022

Fuel

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Reduction in PM and NOX of a diesel engine integrated with n-octanol fuel addition and exhaust gas recirculation

Cited by 36 publications

References 42 publications

A Review of the External and Internal Residual Exhaust Gas in the Internal Combustion Engine

A Review of the External and Internal Residual Exhaust Gas in the Internal Combustion Engine

Nanoparticle Components and Number–Size Distribution of Waste Cooking Oil-Based Biodiesel Exhaust Gas from a Diesel Particulate Filter-Equipped Engine

Experimental and simulation study of the high pressure oxidation of dimethyl carbonate

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