Comparison of vehicle performance using fossil diesel fuel blends with biodiesel and HVO fuel

Sondors, Kristaps; Birkavs, Aivars; Pīrs, Vilnis; Birzietis, Gints; Dukulis, Ilmars

doi:10.22616/erdev2019.18.n052

Cited by 1 publication

(2 citation statements)

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“…The tests and the sequence of their execution have been approved in several previous studies, including experiments performed with the same car running on blends of 7% biodiesel and 7% hydrotreated vegetable oil with fossil diesel [9].…”

Section: Fig 1 Tested Car On the Chassis Dynamometermentioning

confidence: 99%

“…According to Heywood, the main source of NO production in a diesel engine is the diffusion combustion phase, which starts after pilot combustion and the premixed phase of following main injection is finished [15]. Additionally, higher compressibility of paraffinic fuel, compared to regular diesel fuel leads to delayed injection, which reduces pressure, temperature and NO formation [9]. The detailed results of NOx composition, calculated by equation (1) are not included for the brevity of this paper, but NO2 was approximately 55% and NO just 45% of the volumetric part of total nitrogen oxides for both tested fuels.…”

Section: Fig 5 Concentration Of Co2 Hc So2 and Nox In Vehicle-out Exhaust Gasesmentioning

confidence: 99%

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Comparison of car performance using hvo fuel and diesel fuel

Sondors

Dukulis

Pīrs

et al. 2021

20th International Scientific Conference Engineering for Rural Development Proceedings

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All member states of the European Union are bound to the EU directives and regulations on the reduction of greenhouse gas emissions and the use of renewable energy sources in road transport. As the objectives defined in these documents cannot be achieved only by the mandatory blending of biofuels, opportunities to use new generation biofuels in pure form have to be investigated. One of the most promising fuel types in this matter could be hydrotreated vegetable oil (HVO), which can be produced from a variety of non-food raw materials. To determine the effect of fuel on the car's dynamic, economic and environmental performance, experimental studies were carried out using a car model Opel Insignia powered by pure HVO fuel (NExBTL manufactured by Neste Oil) and regular diesel fuel. The tests were performed on a power bench, but the AVL measuring equipment was used to determine the exhaust gas composition and fuel consumption. The experimental results show that the power and torque characteristics in the whole range of engine speed are similar when operated with NExBTL and fossil diesel. The average NExBTL fuel volumetric consumption is about 3% higher, fuel mass consumption 5.3% lower and fuel energy input 4.5% lower compared to diesel fuel. This can be explained by the differences between the physical properties of the tested fuels, such as density, lower heating value and compressibility. Exhaust components, which are usually compared in studies of different fuels, using NExBTL fuel tend to decrease compared to fossil diesel. A reduction was observed in most driving modes tested. Unburned hydrocarbons decreased on average by 44%, SO2by 13.3%, NOx by 5% and CO2by 3.8%. Experimental studies show that NExBTL fuel might compete with fossil diesel in the future. It is confirmed by measurements of power, fuel consumption and exhaust gas content. An important drawback for the wider implementation of this fuel is its production cost.

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Section: Fig 1 Tested Car On the Chassis Dynamometermentioning

confidence: 99%

Section: Fig 5 Concentration Of Co2 Hc So2 and Nox In Vehicle-out Exhaust Gasesmentioning

confidence: 99%