Diesel engine performance and emission evaluation using Canola biodiesel emulsion fuel

Anbarasu, A.; Karthikeyan, A.

doi:10.1080/14484846.2015.1093222

Cited by 20 publications

(11 citation statements)

References 12 publications

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“…In case of CPO and VCO, the drop in the brake thermal efficiency at 25% and higher loads is due to lower heating values, higher densities and poor mixing. 7,37,38 Similar observation was made by Singh et al 39 who reported lower efficiencies with virgin coconut oil and crude coconut oil. The heating value of the TMO is higher than CPO and VCO, resulting in a higher brake thermal efficiency.…”

Section: Performance Characteristicssupporting

confidence: 76%

“…38,40 Since diesel engines operate with good amount of air, NO x emissions are found to be higher in compression ignition 43 engines compared to spark ignition (SI) engines. 30,37,40 NO x emissions for TMO and NGO are found to be significantly higher than CPO and VCO at all the loads and slightly higher than the NO x emissions for diesel. This is probably due to lower combustion temperature in the engine cylinder with TMO and NGO.…”

Section: Emission Characteristicsmentioning

confidence: 79%

“…This is because of the combined effects of higher heating value (39.45 MJ/kg) compared to other SVOs, lower fuel flow rate, and lower density of the NGO compared to other oils. 37,38 At 25% load, VCO showed the least BSFC while TMO showed the highest; while at 50% load, NGO has the lowest BSFC and TMO the highest. The general trend in the variation of BSFC with increasing load is similar to the trends reported in the past.…”

Section: Performance Characteristicsmentioning

confidence: 97%

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Performance and emission characteristics of a diesel engine employing straight vegetable oils from Vanuatu as fuels

Sisi

Ahmed

Rohindra

2020

Advances in Mechanical Engineering

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The performance characteristics of the engine and the emission levels with Copra Oil (CPO), Virgin Coconut (cocos nucifera) Oil (VCO), Tamanu (calaphyllum inopyllum) Oil (TMO), and Nangae (canarium indicum) Oil (NGO) are presented. The oils, obtained from naturally grown trees in Vanuatu, were tested as straight vegetable oils (SVOs) in a Diesel engine and the results are compared with those of neat diesel. The oils were converted to their fatty-acid-methyl-esters (FAMEs) using gas chromatography to determine their fatty acid compositions. The brake thermal efficiency with SVOs was found to be comparable to diesel. The structure of the alkyl chain and the carbon-to-hydrogen ratio were also studied. All the oils have Palmitic acid, Capric acid, Caprylic acid, and Oleic acid as the major fatty acids. The CPO and VCO have higher amounts of Oleic acid, which acts as an additive and breaks up the interaction between the major fatty acids at higher temperatures, reducing the viscosity. Emissions of CO2 were lower while those of CO, NOx, and SO2 were higher with SVOs compared to diesel. The results indicate that the local SVOs are good and inexpensive substitute fuels for Vanuatu that can help the country meet the UN’s sustainable development goals.

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Section: Performance Characteristicssupporting

confidence: 76%

Section: Emission Characteristicsmentioning

confidence: 79%

Section: Performance Characteristicsmentioning

confidence: 97%

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Performance and emission characteristics of a diesel engine employing straight vegetable oils from Vanuatu as fuels

Sisi

Ahmed

Rohindra

2020

Advances in Mechanical Engineering

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“…An experimental research results about using palm oil emulsions for a diesel engine showed that unburned hydrocarbon (HCs), carbon monoxide (CO), and carbon dioxide (CO2) emissions of emulsions between palm oil and water were more favorable than that of diesel fuel and it reduced wear of the moving parts [11]. Furthermore, a diesel engine using diesel fuel was tested with the emulsions of rapeseed oil and 10 % of water by volume [12], the results were reported about the increase in engine thermal efficiency, otherwise a considerable reduction in emissions of smoke and NOx. Other results were reported while using the emulsion of vegetable oil-water obtained by ultrasonic [13].…”

Section: Emulsion With Low Viscosity Liquidmentioning

confidence: 99%

Comparative Analysis on Performance and Emission Characteristic of Diesel Engine Fueled with Heated Coconut Oil and Diesel Fuel

Pham¹,

Noor²,

Hoang³

2018

INT. J. AUTOMOT. MECH. ENG.

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Alternative fuel and renewable energy is becoming important issue due to unstable fuel supply and price. Recently, bio-fuels are much interested because of their beneficial effects on environment, agriculture and economic development. Raw vegetable oils -a kind of bio-fuels, even though it has many disadvantages, are potential renewable fuel replaced for ever-exhausted fossil fuel. In this work, vegetable oil available in the South of Vietnam such as raw coconut oil is used by heating up to aim at reducing its high viscosity, surface tension, density and meeting the fuel requirements. Experimental and comparative study is carried out on an 80 hp small marine diesel engine fueled with heated coconut oil (HCO) and fossil diesel fuel. The results of engine performance and emission characteristics are measured. The results show that, specific fuel consumption, CO, HC and smoke emissions are higher, but thermal efficiency and NOx emission are lower as using HCO in comparison with diesel fuel. Besides, this study also denotes that, heated raw coconut oil up to 100 o C is considered as the most proper fuel to achieve the engine performance and emission characteristics, which are equal to diesel fuel.

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“…In terms of cetane number, pure canola oil has 54.3 whereas diesel has 47. It is worth noting that the oxygen content of canola oil is 10.8% compared to diesel, which does not contain any oxygen [22]. Biodiesel having both a higher cetane number and oxygen content should result in a more efficient combustion when compared to diesel [23,24].…”

Section: Introductionmentioning

confidence: 99%

Study of Spray Behaviors to Correlate with Engine Performance and Emissions of a Diesel Engine Using Canola-Based Biodiesel

Bari

Zhang

Kafrawi

et al. 2022

Fuels

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The use of renewable biodiesel fuel in diesel engines can reduce the demand for depleting fossil fuels and reduce harmful emissions to the environment. In this research, an engine simulation is conducted using ANSYS Forte software, which allows for visualization of the spray inside the combustion chamber. The results show that biodiesel has higher liquid and vapor penetration lengths, higher droplet mass and diameter, and a longer breakup length. Molecular images of fuel molecules show that the temperature of biodiesel molecules is 141 °C lower than diesel molecules at 709 degree crank angle (°CA). These characteristics result in an extended evaporation time for biodiesel, consequently leading to poorer performance. Additionally, increased penetration length can lead to carbon deposits inside the combustion chamber. Therefore, such inefficiencies of biodiesel spray properties lead to lower combustive performance than diesel. In terms of performance, on average, biodiesel produces 16.9% lower power and 19.9% higher brake specific fuel consumption. On average, the emissions of CO, CO2, and HC of biodiesel are 17.8%, 3.41%, and 23.5% lower and NOx is 14.39% higher than the corresponding values obtained for pure diesel, respectively. In-cylinder combustion analyses show that the peak pressure of biodiesel is 0.5 MPa lower, the peak cycle temperature is 36 °C lower, the ignition delay is 4 °CA longer, the peak heat release rate is 16.5 J/deg. higher, and the combustion duration is 5.96 °CA longer compared to diesel combustion.

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Diesel engine performance and emission evaluation using Canola biodiesel emulsion fuel

Cited by 20 publications

References 12 publications

Performance and emission characteristics of a diesel engine employing straight vegetable oils from Vanuatu as fuels

Performance and emission characteristics of a diesel engine employing straight vegetable oils from Vanuatu as fuels

Comparative Analysis on Performance and Emission Characteristic of Diesel Engine Fueled with Heated Coconut Oil and Diesel Fuel

Study of Spray Behaviors to Correlate with Engine Performance and Emissions of a Diesel Engine Using Canola-Based Biodiesel

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