Effect of EGR (exhaust gas recirculation) in diesel engine with multi-walled carbon nanotubes and vegetable oil refinery waste as biodiesel

Manieniyan, V.; V, Velumani; Senthilkumar, R.; Sivaprakasam, S.

doi:10.1016/j.fuel.2020.119689

Cited by 18 publications

(6 citation statements)

References 20 publications

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“…The formation of NO generally takes place in a pre-mixed combustion phase [39,43]. A shorter ID period reduces the duration of pre-mixed combustion, resulting in the reduced formation of NO [44]. It was discovered that when the P inj increased, so did the NO emissions.…”

Section: Exhaust Emission Characteristicsmentioning

confidence: 99%

Sustainable biodiesel from flex-mix feedstock and its combustion in a VCR-CRDI engine with variable exhaust gas recirculation and injection pressure

Sharma¹,

Hossain²,

Duraisamy³

et al. 2022

J. Phys. Energy

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Biodiesel produced from single feedstocks has many challenges due to variations in the oil properties. Flex-mix approach is a long-term solution for turning mixed feedstock into high-quality biodiesels. In this investigation, a premixed used cooking oil and animal fat (pig fat) mixture (from 20-80%) was transesterified to produce flex-mix methyl ester (FMME). The FMME fuel characteristics were tested and compared to biodiesel standards. Generally, biodiesel emits higher oxides of nitrogen (NOx) gas due to the presence of high unsaturation compounds and oxygen. The present study aimed to address this issue by adopting the flex-mix approach in combination with fuel injection strategies (400, 500 and 600 bar), exhaust gas recirculation (EGR-10%, 20% and 30%) and variable compression ratio (CR 17.5:1, 20:1 and 22:1). At a CR of 22 and injection pressure (Pinj) 600 bar, the FMME fuel without EGR shows a minimum reduction in brake thermal efficiency (BTE) of 0.15 % when compared to diesel. Nitric oxide (NO) gas emissions decreased by nearly 50% for all Pinj and EGR, but they rose when the CR was increased to 20 and 22. Smoke and hydrocarbon (HC) emissions also increased with exhaust gas proportion. The engine performance with FMME fuel was found to be equivalent to fossil diesel fuel. According to the findings, the flex-mix approach could be a long-term alternative to producing renewable fuel for off-road diesel engines application.

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Section: Exhaust Emission Characteristicsmentioning

confidence: 99%

Sustainable biodiesel from flex-mix feedstock and its combustion in a VCR-CRDI engine with variable exhaust gas recirculation and injection pressure

Sharma¹,

Hossain²,

Duraisamy³

et al. 2022

J. Phys. Energy

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“…They also found that the addition of functionalized MWCNTs decreased the brake specific fuel consumption and improved the torque and power of the engine. However, Manieniyan et al [27] showed that NO x , CO, and UHCs emissions are reduced using diesel-vegetable oil refinery waste biodiesel added with MWCNTs of 30 ppm concentration on a diesel engine coupled with exhaust gas recirculation. In another study, Manigandan et al [28] reported lower NO x , CO, and smoke emissions than that of neat diesel fueled on a direct injection diesel engine fueled with canola and Moringa oleifera biodiesel blends added with MWCNTs at 40 ppm of concentration.…”

Section: Introductionmentioning

confidence: 99%

Effects of Multi-Walled Carbon Nanotubes on the Combustion, Performance, and Emission Characteristics of a Single-Cylinder Diesel Engine Fueled with Palm-Oil Biodiesel-Diesel Blend

Ooi¹,

Kau²,

Manoharan³

et al. 2023

Preprint

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“…Biodiesel can be produced from many different feedstocks, including non-edible oils (such as eucalyptus oil [27], Jatropha curcas oil [1,28], carania oil [29], waste vegetable and non-edible industrial oils [20], vegetable oil refinery waste [30,31], vegetable and animal oils [13,32,33], waste tallows [23,34] and vegetable oils [3,13,20,23,[35][36][37], fish oil [13,38], waste frying oils [13,[39][40][41], and various alcohols [6,12,13,22,32,39]). Biofuels obtained from vegetable oils are of the greatest interest for use in diesel engines.…”

Section: Introductionmentioning

confidence: 99%

“…This is due to the decreased calorific value [1,24,25,42] and the higher viscosity for biodiesel [12,15,24,64]. At the same time, a higher density of biodiesel [6,14,22,26,27,[29][30][31][32][33][35][36][37][38][39][40][41][42][43][44][48][49][50][51][52][53]58,64] increases the amount of injected fuel [24,39]. This has an additional effect on the increase in BSFC [15] with an increase in the percentage content of biodiesel in blended fuel [24].…”

Section: Introductionmentioning

confidence: 99%

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Investigation of the Influence of Different Vegetable Oils as a Component of Blended Biofuel on Performance and Emission Characteristics of a Diesel Engine for Agricultural Machinery and Commercial Vehicles

et al. 2021

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Biofuels derived from renewable plant materials are considered promising alternative fuels to decrease emissions of ICEs. This study aimed to justify the possibility of using vegetable oils of different sources as a 10% additive in blended biofuel for diesel engines of agricultural machinery and commercial vehicles. Seven different vegetable oils were investigated. Experiments have been performed by fueling a diesel engine with blended biofuels of 90% petroleum diesel fuel and 10% vegetable oil. In the maximum power and maximum torque modes, the brake power drop was no more than 1.5%, and the brake-specific fuel consumption increase was less than 4.3%; NOx emissions were reduced by up to 8.3%, exhaust smoke—up to 37.5%, CO—up to 20.0%, and unburned HC—up to 27.9%. In the operating modes of the European 13-mode steady-state test cycle, the integral specific emissions of HC decreased by up to 30.0%, integral specific emissions of CO—up to 15.0%, and integral specific emissions of NOx—up to 16.0%. The results obtained show the feasibility and rationality of using the investigated vegetable oils as a 10% additive in blended biofuel for diesel engines of agricultural machinery and commercial vehicles.

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Effect of EGR (exhaust gas recirculation) in diesel engine with multi-walled carbon nanotubes and vegetable oil refinery waste as biodiesel

Cited by 18 publications

References 20 publications

Sustainable biodiesel from flex-mix feedstock and its combustion in a VCR-CRDI engine with variable exhaust gas recirculation and injection pressure

Sustainable biodiesel from flex-mix feedstock and its combustion in a VCR-CRDI engine with variable exhaust gas recirculation and injection pressure

Effects of Multi-Walled Carbon Nanotubes on the Combustion, Performance, and Emission Characteristics of a Single-Cylinder Diesel Engine Fueled with Palm-Oil Biodiesel-Diesel Blend

Investigation of the Influence of Different Vegetable Oils as a Component of Blended Biofuel on Performance and Emission Characteristics of a Diesel Engine for Agricultural Machinery and Commercial Vehicles

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