Hydrotreated vegetable oil as enabler for high-efficient and ultra-low emission vehicles in the view of 2030 targets

Blasio, Gabriele Di; Ianniello, Roberto; Beatrice, Carlo

doi:10.1016/j.fuel.2021.122206

Cited by 35 publications

(19 citation statements)

References 35 publications

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“…The results in an engine testbed reveal that introducing proper fuel injection strategies allows to take the best of HVO characteristics [25], but this is not easy to do in the current fleet of vehicles and it is important to understand what happens when different fuels are introduced in the market. Additionally, the study of Ahmad et al reveals an increase in thermodynamic efficiency of 2.2 to 2.7% compared with baseline diesel operation, considering the engine calibration process [26].…”

Section: Literature Reviewmentioning

confidence: 99%

Performance, Emissions, and Efficiency of Biodiesel versus Hydrotreated Vegetable Oils (HVO), Considering Different Driving Cycles Sensitivity Analysis (NEDC and WLTP)

Serrano

Santana

Pires

et al. 2021

Fuels

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The use of biofuels in vehicles becomes more advantageous than the consumption of fossil fuels, mainly because it uses renewable sources of energy. Recently there are some concerns about biodiesel sources, and hydrotreated vegetable oils (HVO) appear as a possible advanced solution. To understand the effect that the implementation of the new and old European type-approval test cycles (NEDC e WLTP) has on the results of these fuels considering pollutant emissions and fuel consumption results, a EURO V vehicle was subject to these cycles and also to engine performance evaluation tests. For this analysis, the fuels considered were: B0 (pure diesel), B7 (7% of biodiesel), B15 (15% of biodiesel), B100 (pure biodiesel), and HVO15 (15% of HVO). The findings lead to the conclusion that completely replacing fossil fuels with biofuels is not the most cost-effective approach. No significant differences were observed considering the two homologation cycles, the oldest (NEDC) and the actual (WLTP) and the use of HVO also does not present any relevant differences concerning the fuel consumption differences to B0 (+0.58% NEDC and +0.05%WLTP), comparing well with biodiesel behavior (−1.74% NEDC and −0.69%WLTP for B7 and +1.48% NEDC and 1.89% WLTP for B15). Considering the power of the engine obtained with the fuels, the differences are almost negligible, revealing variations smaller than 2% for B7, B15, and HVO15.

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Section: Literature Reviewmentioning

confidence: 99%

Performance, Emissions, and Efficiency of Biodiesel versus Hydrotreated Vegetable Oils (HVO), Considering Different Driving Cycles Sensitivity Analysis (NEDC and WLTP)

Serrano

Santana

Pires

et al. 2021

Fuels

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“…These process technologies comprise, at least, two catalytic hydroprocessing stages. First, triglycerides are hydrodeoxygenated to yield normal alkanes, providing excellent combustion properties with poor cold-flow properties . Several metal-based catalysts have been proposed for these reactions: from transition to noble metal catalysts .…”

Section: Introductionmentioning

confidence: 99%

Production of Biofuels from Hydrodeoxygenation and Hydroisomerization of Triglycerides with Metal-Supported SAPO-11 Molecular Sieves

Torres-Bujalance,

Prieto,

Rodriguez Espinoza

et al. 2024

Energy Fuels

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Hydroprocessing of fats and oils is being implemented as the main alternative to fossil fuels. Industrial-scale routes are based on a complex sequence of reactors and unit operations of separation: hydrodeoxygenation, fractionation, downstream hydrocracking/hydroisomerization, and final purification. In the present work, one-step conversion of triglycerides using nonsulfided metalloaded silicoaluminophosphates-11 (SAPO-11) molecular sieves is proposed to convert triglyceride feedstocks to isomerized renewable hydrocarbons. Different noble (Pd, Pt) and transition (Ni, Cu) metals were impregnated onto a SAPO-11 molecular sieve. The resulting bifunctional catalysts were characterized by ICP-OES, adsorption−desorption N 2 at −196 °C, n-propylamine temperature-programmed desorption, X-ray fluorescence spectroscopy, SEM, and TEM. The catalytic behavior was tested in a stirred tank reactor device, using refined vegetable oil as reference triglyceride. The operation conditions were set at 50 bar, 350 °C under 800 rpm stirring. The effect of the different metals on the catalytic performance was evaluated in terms of conversion of triglycerides, yield to hydrocarbons (naphtha, kerosene, diesel, and heavy fractions), and isomerization activity. The highest yield to liquid hydrocarbons of 73.1% was obtained for a nickel-based SAPO-11 with an 8% metal loading. Among the different metals evaluated (Pt, Pd, Ni, Cu), nickel showed the highest isomerization activity with the highest iso/n-paraffins ratio of 0.92. In all cases, a fraction of heavy hydrocarbon was obtained, suggesting that long residence time led to undesired side reactions.

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“…Renewable and sustainable alternative fuels such as biofuels can be a solution to the increased demand for fuels and the depletion of oil resources. Also, the association of advanced fuel formulations with highly efficient engine combustion architectures can be a suitable solution for the challenges related to efficiency and emission targets in the short-medium term [2]. The transport sector is the primary consumer of petroleum-derived fuels.…”

Section: Introductionmentioning

confidence: 99%

Effects of Injection Rate Shape on Performance and Emissions of a Diesel Engine Fuelled by Diesel and Biodiesel B20

2022

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The combustion process in diesel engines is controlled by the injection rate shape. The stricter emission regulations requiring simultaneous reduction of nitrogen oxides and particulate matter imposes intense research and development activity for achieving clean and robust combustion. This work describes the experimental investigation made for calibration of an engine model and the numerical investigation performed to assess the influences of different injection rate shapes on performances of a diesel engine fuelled with diesel and rapeseed biodiesel B20. The engine model was developed with the AVL-BOOST code using the AVL-MCC combustion mode. The model was calibrated for the reference Top-Hat injection rate shape using experimental data registered for maximum brake torque and maximum brake power speed conditions. Other injection rate shapes such as triangular, trapezoidal, and boot having the same area, start, and duration of injection were investigated in terms of combustion characteristics, performance, and pollutant emissions. The link existing between the injection characteristics and the NOx and Soot emissions highlights that, for the optimal rate of injection shape, a simultaneous reduction of NOx and Soot by 11%, respectively 4% for maximum brake torque and by 22%, respectively 7% for maximum brake power, can be obtained using biodiesel B20.

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Hydrotreated vegetable oil as enabler for high-efficient and ultra-low emission vehicles in the view of 2030 targets

Cited by 35 publications

References 35 publications

Performance, Emissions, and Efficiency of Biodiesel versus Hydrotreated Vegetable Oils (HVO), Considering Different Driving Cycles Sensitivity Analysis (NEDC and WLTP)

Performance, Emissions, and Efficiency of Biodiesel versus Hydrotreated Vegetable Oils (HVO), Considering Different Driving Cycles Sensitivity Analysis (NEDC and WLTP)

Production of Biofuels from Hydrodeoxygenation and Hydroisomerization of Triglycerides with Metal-Supported SAPO-11 Molecular Sieves

Effects of Injection Rate Shape on Performance and Emissions of a Diesel Engine Fuelled by Diesel and Biodiesel B20

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