Experimental Study of Ignition Delay, Combustion, and NO Emission Characteristics of Hydrogenated Vegetable Oil

Krivopolianskii, Vladimir; Bjørgen, Karl Oskar Pires; Emberson, David R.; Ushakov, Sergey; Æsøy, Vilmar; Løvås, Terese

doi:10.4271/04-12-01-0002

Cited by 11 publications

(7 citation statements)

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“…Table 5 shows the comparison between FAME and HVO. Renewable diesel is a similar process, except that vegetable oil is processed at high pressure and high temperature in the presence of hydrogen and strong catalyst [61]. As a simple and vibrant fuel called green diesel, propane, CO or CO 2 , vegetable oil or/and animal fat is converted to diesel.…”

Section: Difference Between Biodiesel and Hydrogenated Vegetable Oilmentioning

confidence: 99%

Biodiesel and green diesel generation: an overview

Vignesh¹,

Kumar

Ganesh

et al. 2021

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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First, second, third, and fourth-generation biofuels are continuously evolving as a promising substitute to petrodiesel catalyzed by energy depletion, economic and environmental considerations. Bio-diesel can be synthesized from various biomass sources, which are commonly divided into FAME and renewable biodiesel. FAME biodiesel is generally produced by the transesterification of vegetable oils and fats while renewable diesel is produced by hydro-deoxygenation of vegetable and waste oils and fats. The different generation, processing technologies and standards for FAME and renewable biodiesel are reviewed. Finally, the life cycle analysis and production cost of conventional and renewable biodiesel are described.

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Section: Difference Between Biodiesel and Hydrogenated Vegetable Oilmentioning

confidence: 99%

Biodiesel and green diesel generation: an overview

Vignesh¹,

Kumar

Ganesh

et al. 2021

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…ID 5% is the moment where 5% of fuel chemical energy is released. ID 5% adapts to the change of total energy input when varying injector mass flow (different orifices), injection pressure, injection duration, or fuel components, so that ID 5% is more robust than ID 0.2 in these cases (Joshi et al, 2015;Rabl et al, 2015;Krivopolianskii et al, 2019;Li et al, 2019). ID HTR is determined as the horizontal intercept of the linear fit of the first positive slope of the dHRR/dt profile within the HTR phase.…”

Section: Ignition Delaymentioning

confidence: 99%

“…Therefore, in this study, CP 50% is defined as the moment for 50% MFB. Similar CP definitions were also used in ASTM D7668 (ASTM, 2017), and in some recent studies (Kuszewski, 2018;Krivopolianskii et al, 2019). CP maxHRR is defined as the moment for the peak HRR.…”

Section: Combustion Phasingmentioning

confidence: 99%

Ignition and Combustion Characteristics of N-Butanol and FPBO/N-Butanol Blends With Addition of Ignition Improver

et al. 2022

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In this study, the ignition and combustion characteristics of fast pyrolysis bio-oil (FPBO) are investigated in a combustion research unit (CRU), which mainly consists of a constant-volume combustion chamber. To fuel the CRU with FPBO, n-butanol and 2-ethylhexyl nitrate (EHN) are used to improve the atomization and ignition properties of the fuel blends, respectively. In the first part of this study, an appropriate proportion of EHN additive into n-butanol is determined based on the balance between the ignition improvement and the amount of EHN addition. Then, the effects of FPBO content (up to 30%) in FPBO/n-butanol blends with the same EHN addition are investigated. The effects of chamber wall temperature on the combustion are also studied. Finally, the different definitions of indicators are determined from the chamber pressure traces to quantitatively depict fuel ignition and combustion characteristics including ignition delay, combustion phasing, end of combustion and burn duration. Experimental results show that a distinct two-stage ignition process can be observed for all cases. For n-butanol with added EHN, the increase of EHN proportion could effectively advance both the low- and high-temperature reaction phases. However, this gain is obviously reduced when the percentage of EHN becomes higher than 8%. For FPBO/n-butanol blends with an addition of EHN, higher FPBO proportions have little effect on the low-temperature reaction phase, while they delay the high-temperature reaction phase. Chamber wall temperature have a significant influence on the ignition and combustion processes of the tested FPBO/n-butanol blends. With these blends, negative temperature coefficient behavior was observed in a chamber wall temperature range of 535–565°C.

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“…The most widespread alternative to diesel oil, obtained from crops such as soy or rapeseed through a process called transesterification, are fatty acid methyl esters (FAME), simply known as biodiesel. FAME certainly provides benefits for the reduction of CO, unburned hydrocarbons (HC) and PM emissions [8]. Unfortunately, it exhibits a lower stability to oxidation, lower suitability to cold temperatures, and a corrosive and ageing effect on polymeric fuel system components [9].…”

Section: Introductionmentioning

confidence: 99%

Characterization of Hydrotreated Vegetable Oil (HVO) in a Euro 6 Diesel Engine as a Drop-In Fuel and With a Dedicated Calibration

d’Ambrosio,

Mancarella,

Marello

2023

J. Phys.: Conf. Ser.

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Renewable fuels can play an important role in achieving future goals of energy sustainability and CO2 reduction. In particular, hydrotreated vegetable oil (HVO) represents one of the most promising alternatives to petroleum-derived diesel fuels. Several studies have shown that conventional diesel engines can run on 100% HVO without significant modifications to the hardware and control strategies. The current activity has experimentally evaluated the potential of HVO as a “drop-in” fuel, i.e., without changes to the original baseline calibration, comparing it to conventional diesel fuel on a 2.3-litre Euro 6 compression ignition engine. Tests revealed that HVO can significantly reduce engine-out soot (by more than 60%), HC and CO emissions (by about 40%), compared to diesel, while NOx levels and fuel conversion efficiency remain relatively unchanged under steady-state warmed-up conditions. The advantages of HVO proved to be further enhanced when the engine has not yet warmed up. Using statistical techniques of design of experiments (DoE) at three warmed-up steady-state operating points, the main engine control parameters were recalibrated to demonstrate that engine-out emissions can be further optimized with a dedicated calibration.

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Experimental Study of Ignition Delay, Combustion, and NO Emission Characteristics of Hydrogenated Vegetable Oil

Cited by 11 publications

References 0 publications

Biodiesel and green diesel generation: an overview

Biodiesel and green diesel generation: an overview

Ignition and Combustion Characteristics of N-Butanol and FPBO/N-Butanol Blends With Addition of Ignition Improver

Characterization of Hydrotreated Vegetable Oil (HVO) in a Euro 6 Diesel Engine as a Drop-In Fuel and With a Dedicated Calibration

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