The effects of increasing FAME biodiesel content on combustion characteristics and HC emissions in high-EGR low temperature combustion

Sogbesan, Oluwasujibomi; Garner, Colin P.; Davy, Martin

doi:10.1016/j.fuel.2021.121055

Cited by 13 publications

(6 citation statements)

References 41 publications

(51 reference statements)

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“…Moreover, the EGR system may cause incomplete combustion due to the reduced O 2 content, which results in the release of unburned HC and the accumulation of these deposits of carbon in the intake manifold. Similar results were described by Sogbesan et al, who tested biodiesel fuel with a CRDI. They found that the use of biodiesel fuel reduced HC emissions.…”

Section: Resultssupporting

confidence: 88%

Effects of Blended Diesel–Biodiesel Fuel on Emissions of a Common Rail Direct Injection Diesel Engine with Different Exhaust Gas Recirculation Rates

Sethin,

Oo,

Thawornprasert

et al. 2024

ACS Omega

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The aim of the study was to investigate the exhaust gas emissions and fuel consumption of a common rail direct injection (CRDI) diesel engine using mixed diesel (B10) and biodiesel (B20− B100) fuels. The study's primary objective was to determine the effects of blended diesel-biodiesel fuel on CRDI emissions based on different exhaust gas recirculation (EGR) rates, including carbon monoxide (CO), carbon dioxide (CO 2 ), oxygen (O 2 ), nitrogen oxide (NO x ), and hydrocarbon (HC) emissions, smoke opacity, exhaust gas temperature, and fuel consumption. The CRDI experiments involved adjusting the different engine speeds (1400−3000 rpm) and EGR rates (0 and 12.5%), which were analyzed to determine their impact on these parameters for both blended diesel and biodiesel fuels. The results showed that under the conditions of no EGR (0%), the CO and HC emissions and the smoke opacity were lower than those with a 12.5% EGR rate for all fuel types and all cases. With 12.5% EGR rate, the O 2 emissions and the EGT of the CRDI diesel engine decreased, which resulted in significantly lower NO x emissions because of EGR into the combustion chamber. For the maximum engine speed of 3000 rpm and with no EGR, the CO and HC emissions and the smoke opacity were lower than those with a 12.5% EGR rate for all fuel types. With a 12.5% EGR rate at 3000 rpm, the O 2 emissions and the exhaust gas temperature were reduced by 0.07% and 2.27%, respectively, and the NO x emissions were reduced by 2.54%. However, with EGR, the CO and HC emissions and the smoke opacity increased by 7.70%, 18.61%, and 0.4%, respectively. Furthermore, the fuel consumption of pure biodiesel (B100) at 3000 rpm with a 12.5% EGR rate was reduced by 2.81% compared to that with a 0% EGR rate. Because the temperature in the combustion chamber is high enough for the engine to run, the EGR reuses a portion of the exhaust gases and can help to minimize the quantity of fuel in the combustion chamber. As a suggestion based on these observations, biodiesel fuel should not exceed B80 because the viscosity and density of fuel that are too high may affect the fuel injection system, both the injectors, and the pressure pump, causing the injectors to be unable to work correctly. These findings can contribute to the development of strategies and technologies for reducing emissions and improving fuel efficiency in CRDI diesel engines.

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Section: Resultssupporting

confidence: 88%

Effects of Blended Diesel–Biodiesel Fuel on Emissions of a Common Rail Direct Injection Diesel Engine with Different Exhaust Gas Recirculation Rates

Sethin,

Oo,

Thawornprasert

et al. 2024

ACS Omega

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“…the distance between AB and MN (transceiver distance r) is a minimum of 8 km. The distance between the magnetic rods and the preamplifier is greater than 5 m. To eliminate human interference, the two rods need to be buried underground to maintain stability [12]. We used a compass meter for orientation so that the two magnetic rods, Hx and Hy, were perpendicular to each other and horizontal, controlling the error to within 2 degrees.…”

Section: ⅱ Principle Of Csamt Operationmentioning

confidence: 99%

Exploring Medium and Low-Temperature Convective Geothermal Resources Through Controlled Source Audio Magnetotelluric Mothod

Sheng He

2024

jes

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Medium and low-temperature convective geothermal resources are a crucial component of China's geothermal wealth, primarily concentrated in the eastern coastal regions. To maximize the utilization of these resources, geophysical surveys are essential, with controlled source audio magnetotelluric(CSAMT) being a prominent and effective method employed in geothermal resource assessments. This study focuses on applying CSAMT to survey specific geothermal sites, including the Xiu Yan Gou Tang Hot Spring, Fengcheng Gou Tang Hot Spring, and Hai Cheng Xi Huang di Geothermal Field. The results obtained through this method provide detailed insights into the distribution of both deep and shallow thermal storage spaces within these fields, shedding light on the intricate thermal circulation systems associated with them. These findings serve as a reliable foundation for planning and executing further geothermal resource development projects. CSAMT emerges as a comprehensive tool for understanding the nuances of medium and low-temperature convective geothermal resources.

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“…As a consequence of the lower intake of O 2 proportion, the flames spread farther, lowering the local temperature, and also due to increased EGR levels, soot production is limited. The “chemical influence”, “thermal influence”, and “dilution influence” are the three main characteristics of EGR . Differences between these phenomena are mostly due to the localized substitution of inflow charge by inert gases, which results in the reduction of O 2 concentration.…”

Section: Introductionmentioning

confidence: 99%

“…The “chemical influence”, “thermal influence”, and “dilution influence” are the three main characteristics of EGR. 12 Differences between these phenomena are mostly due to the localized substitution of inflow charge by inert gases, which results in the reduction of O 2 concentration. This soothes the flame, reducing the amount of NO x produced.…”

Section: Introductionmentioning

confidence: 99%

Influence of Areca Nutshell-Reduced Graphene Oxide, Isopropanol, and Exhaust Gas Recirculation in an Internal Combustion Engine

Muralidharan¹,

Arumugam

Pasha

et al. 2022

ACS Omega

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Regulations governing pollution, declining fossil fuel supply, and technological breakthroughs in renewable fuels all have a profound influence on the development of alternative fuels. This current research focuses on the influence of nanoadditives with alcohol in an exhaust gas recirculation-cooled engine. As nanoadditives have high thermal conductivity and alcohol has high oxygen content, they work synergistically to speed up the catalytic process and increase the combustion rate. The areca nutshell-reduced graphene oxide with a mass fraction of 25 pmm was ultrasonically blended with two isopropanol–diesel mixtures 10% isopropanol + 90% diesel (IDR10) and 20% isopropanol + 80% diesel (IDR20), respectively, and tested in a single-cylinder, 4-stroke internal-combustion engine at a typical injection timing of 23° TDC with an EGR rate of 20%. The results of experiments showed that IDR10 has better combustion and emission parameters than other fuel blends. Compared to other biodiesel blends, the IDR10 blend has 2.3% less BSFC and 2.45% more BTE. The IDR10 blend has lower HC emissions by 42.85%, CO emissions by 33.34%, NO x emissions by 2.42%, and smoke emissions by 15.4%.

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The effects of increasing FAME biodiesel content on combustion characteristics and HC emissions in high-EGR low temperature combustion

Cited by 13 publications

References 41 publications

Effects of Blended Diesel–Biodiesel Fuel on Emissions of a Common Rail Direct Injection Diesel Engine with Different Exhaust Gas Recirculation Rates

Effects of Blended Diesel–Biodiesel Fuel on Emissions of a Common Rail Direct Injection Diesel Engine with Different Exhaust Gas Recirculation Rates

Exploring Medium and Low-Temperature Convective Geothermal Resources Through Controlled Source Audio Magnetotelluric Mothod

Influence of Areca Nutshell-Reduced Graphene Oxide, Isopropanol, and Exhaust Gas Recirculation in an Internal Combustion Engine

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