Application potential of vegetable oils as alternative to diesel fuels in compression ignition engines: A review

Dabi, Maryom; Saha, Ujjwal K.

doi:10.1016/j.joei.2019.01.003

Cited by 66 publications

(21 citation statements)

References 70 publications

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“…Policies and regulations have a direct impact on the use and production of HVO on a global scale [72]. It is renewable and has properties similar to diesel [73]. Its use improves the environmental performance of the engine: significant reduction in CO and HC emissions and a slight positive impact on NO x , CO 2 , and smoke/PM emissions and engine power [74].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study on the Energetic and Ecologic Parameters of Dual Fuels (Diesel–NG and HVO–Biogas) and Conventional Diesel Fuel in a CI Engine

2020

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The Article presents the results of the experimental research and numerical analysis of a compression ignition (CI) engine adapted for running on dual fuels of different composition (diesel and natural gas, diesel and biogas, biodiesel and natural gas, and biodiesel and biogas). The main goal was to find out the impact of different dual fuels on energy performance and emissions depending on the start of injection (SOI) of diesel and the crank angle degree (CAD). Pure conventional diesel fuel and second generation hydrotreated vegetable oil (HVO) (Neste) was used in the research. Natural gas contained 97 vol. % of methane. Biogas (biomethane) was simulated using a methane and carbon dioxide blend consisting of 60 vol. % of methane and 40 vol. % of carbon dioxide. Dual (liquid and gaseous) fuels were used in the tests, with the energy share of liquid fuels accounting for 40% and gas for 60%. The research results have shown that having replaced conventional diesel fuel with dual fuel, engine’s BTE declined by 11.9–16.5%. The use of methane in the dual fuel blend reduced CO2 volumetric fraction in the exhaust gases by 17–20%, while biomethane increased CO2 volumetric fraction by 10–14%. Dual fuel significantly increased CO and HC emissions, but NOx volumetric fraction decreased by 67–82% and smoke by 23–39%. The numerical analysis of the combustion process revealed changes in the ROHR (Rate of Heat Release) that affected engine efficiency and exhaust emissions was done by AVL (Anstalt für Verbrennungskraftmaschinen List) BOOST program.

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Section: Introductionmentioning

confidence: 99%

Comparative Study on the Energetic and Ecologic Parameters of Dual Fuels (Diesel–NG and HVO–Biogas) and Conventional Diesel Fuel in a CI Engine

2020

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“…However, its density is about ten times higher than that of mineral diesel [46] creating some extra costs for maintenance. But, by cleaning, preheating and blending, waste cooking oil will give a better performance, although a too high preheated oil may interfere with the injection system [47].…”

Section: Direct Combustionmentioning

confidence: 99%

Waste to Energy Potential of Domestic Waste Cooking Oil in Guayaquil: A review.

Rivas¹,

Coello²,

Crespo³

et al. 2020

Proceedings of the 18th LACCEI International Multi-Conference for Engineering, Education, and Technology: Engineering, Integrat

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This paper examines the opportunity for waste cooking oil as a potential source of energy by means of (i) production of biodiesel, (ii) direct burning and (iii) biodegradation. It offers a profound review of existing literature and it measures possible uses of the waste cooking oil produced in the city of Guayaquil. In addition, important chemical and physical properties are presented after the development of a sampling process for after laboratory testing. Conclusions show that the most suitable technology is biodiesel generation, followed by biodegradation, but direct burning is found to be not a possible solution due to its kinematic viscosity.

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“…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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Application potential of vegetable oils as alternative to diesel fuels in compression ignition engines: A review

Cited by 66 publications

References 70 publications

Comparative Study on the Energetic and Ecologic Parameters of Dual Fuels (Diesel–NG and HVO–Biogas) and Conventional Diesel Fuel in a CI Engine

Comparative Study on the Energetic and Ecologic Parameters of Dual Fuels (Diesel–NG and HVO–Biogas) and Conventional Diesel Fuel in a CI Engine

Waste to Energy Potential of Domestic Waste Cooking Oil in Guayaquil: A review.

Selected Fuel Properties of Alcohol and Rapeseed Oil Blends

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