Performance and emissions of straight vegetable oils and its blends as a fuel in diesel engine: A review

Mat, Sharzali Che; Idroas, Mohamad Yusof; Hamid, M. F.; Zainal, Zulkarnain

doi:10.1016/j.rser.2017.09.080

Cited by 124 publications

(21 citation statements)

References 87 publications

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“…The increasing of environmental concerns and the reduced availability of fuel in recent years provide considerable incentives to develop alternative fuels from renewable sources that are more economical and environmentally acceptable. Numerous researchers have tried to generate vegetable oil-based derivatives that approximate the characteristics and performance of petroleum-based diesel fuel (Che Mat, Idroas, Hamid, & Zainal, 2018;Franco & Nguyen, 2011;Jakub et al, 2018;Prasad, Singh, & Prasad, 2020;Uyumaz, 2020).…”

Section: Introductionmentioning

confidence: 99%

A study on the performance and emission of diesel engine with Jatropha biodiesel and its blends at different engine load

Jado¹,

Pan²

2020

Preprint

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An experimental study has been done to examine the performance and emission of a diesel engine using different blend ratios of Jatropha oil methyl ester at different engine speeds. At each speed, the engine was operated at no load, quarter, half, three quarters, and full load for different blending ratios. The performance parameters evaluated include Brake Power (BP), Brake Mean Effective Pressure (BMEP), brake specific fuel consumption (BSFC), air to fuel ratio (AFR), excess air factor, brake thermal efficiency, volumetric efficiency and the temperature of exhaust gas whereas exhaust emissions include specific emissions of O2, CO, CO2, and NOx. Biodiesel blends result in a decrease of brake power by 30.8 %, decreases in air to fuel ratio by 18 %, decreases in brake thermal efficiency by 21 %, decreases in volumetric efficiency by 10.7 % and increases in brake specific fuel consumption by 32.18 %. Specific emission of O2, CO, and NOx increases with increasing the percentage of biodiesel in fuel blends. Specific emission of CO2 decreases with increasing the rate of biodiesel in fuel blends. The results suggest that biodiesel obtained from non-edible oil like Jatropha could be a decent substitute to diesel fuel in the diesel engine.

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Section: Introductionmentioning

confidence: 99%

A study on the performance and emission of diesel engine with Jatropha biodiesel and its blends at different engine load

Jado¹,

Pan²

2020

Preprint

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“…Mat et al [9] reported that an addition of 20% rapeseed oil and 10% n-butanol (also known as 1-butanol) to diesel reduced CO 2 emissions at all engine speeds when compared to diesel. However, NO x was increased right across the engine-speed range, CO was elevated at low and medium speeds and HC was evaluated at low engine-speed.…”

Section: Discussionmentioning

confidence: 99%

“…Investigations of its use in CI engines with or without adaptations have shown positive, negative or neutral effects on combustion and emission parameters in comparison with fossil diesel [8][9][10]. Vegetable oil is still of interest in developing fuel blends for CI engines [reviewed in 9,10]. One of the biggest challenges with untransformed (neat) vegetable oils is their high viscosity [11].…”

Section: Introductionmentioning

confidence: 99%

Selected Fuel Properties of Alcohol and Rapeseed Oil Blends

et al. 2020

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The alcohols ethanol and 1-butanol are interesting options as blending components for renewable fuels. We studied whether it is possible to mix these alcohols with a little refined material, rapeseed oil, to obtain stable fuel samples. At room temperature, the stable samples consisted of rapeseed oil blended with butanol at 5 vol-%, 10 vol-%, 20 vol-%, 30 vol-% and one sample of rapeseed oil with 5 vol-% of ethanol. The samples’ fuel properties analysed were kinematic viscosity (at 40 °C), density (at 15 °C) and surface tension. Cold filter plugging point was measured for rapeseed oil with 20 vol-% and 30 vol-% of butanol. Stability of butanol or ethanol and rapeseed oil blends can be achieved at the studied volumes. The density of neat rapeseed oil and all the alcohol–rapeseed oil blends met the requirements set for residual marine fuels. The 30 vol-% butanol–rapeseed oil blend met the requirements for distillate marine oil for density, and almost for kinematic viscosity. The blends appeared most suitable for power plants and marine engines. More detailed analyses of their properties are needed before recommendations for use can be given.

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“…Analogously, triple mixtures of vegetable oils, different alcohols, and fossil diesel have been described. Generally, ternary blends of SVO-diesel-alcohol are found to reduce smoke and could be used as potential sources of renewable energy to partially or fully replace diesel fuel [415][416][417][418][419][420][421][422][423][424][425][426][427][428][429][430][431]. The application of bioethanol in the triple mixtures, encounters difficulties due to its limited solubility in both, vegetable oils and fossil diesel.…”

Section: Blends Of Straight Vegetable Oils (Svo) With Less Viscous Anmentioning

confidence: 99%

Biodiesel at the Crossroads: A Critical Review

et al. 2019

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The delay in the energy transition, focused in the replacement of fossil diesel with biodiesel, is mainly caused by the need of reducing the costs associated to the transesterification reaction of vegetable oils with methanol. This reaction, on an industrial scale, presents several problems associated with the glycerol generated during the process. The costs to eliminate this glycerol have to be added to the implicit cost of using seed oil as raw material. Recently, several alternative methods to convert vegetable oils into high quality diesel fuels, which avoid the glycerol generation, are being under development, such as Gliperol, DMC-Biod, or Ecodiesel. Besides, there are renewable diesel fuels known as “green diesel”, obtained by several catalytic processes (cracking or pyrolysis, hydrodeoxygenation and hydrotreating) of vegetable oils and which exhibit a lot of similarities with fossil fuels. Likewise, it has also been addressed as a novel strategy, the use of straight vegetable oils in blends with various plant-based sources such as alcohols, vegetable oils, and several organic compounds that are renewable and biodegradable. These plant-based sources are capable of achieving the effective reduction of the viscosity of the blends, allowing their use in combustion ignition engines. The aim of this review is to evaluate the real possibilities that conventional biodiesel has in order to success as the main biofuel for the energy transition, as well as the use of alternative biofuels that can take part in the energy transition in a successful way.

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Performance and emissions of straight vegetable oils and its blends as a fuel in diesel engine: A review

Cited by 124 publications

References 87 publications

A study on the performance and emission of diesel engine with Jatropha biodiesel and its blends at different engine load

A study on the performance and emission of diesel engine with Jatropha biodiesel and its blends at different engine load

Selected Fuel Properties of Alcohol and Rapeseed Oil Blends

Biodiesel at the Crossroads: A Critical Review

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