Effects of alternative marine diesel fuels on the exhaust particle size distributions of an off-road diesel engine

Ovaska, Teemu; Niemi, Seppo; Sirviö, Katriina; Nilsson, Olav; Portin, Kaj; Asplund, Tomas

doi:10.1016/j.applthermaleng.2019.01.090

Cited by 21 publications

(22 citation statements)

References 53 publications

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“…It is a sulfur-free, winter-grade diesel, and it was delivered to the Univerisity of Vaasa, UV, in September 2016. LFO fulfilled the requirements of Standard EN 590:2013 [14].…”

Section: Fuelsmentioning

confidence: 92%

“…Important additional information could have been gathered from combustion experiments, such as experiments using prevaporized fuel, droplets, or sprays, but these were not investigated in this study. The engine performance and emissions of the LFO-naphtha blend and neat RME and MGO have been further studied in Hissa et al and Ovaska et al [13,14].…”

Section: Introductionmentioning

confidence: 99%

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Feasibility of New Liquid Fuel Blends for Medium-Speed Engines

et al. 2019

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Several sustainable liquid fuel alternatives are needed for different compression ignition (CI) engine applications. In the present study, five different fuel blends were investigated. Rapeseed methyl ester (RME) was used as the basic renewable fuel, and it was blended with low-sulfur light fuel oil (LFO), kerosene, marine gas oil (MGO), and naphtha. Of these fuels, MGO is a circulation economy fuel, manufactured from used lubricants. Naphtha is renewable as it is a by-product of renewable diesel production process using tall oil as feedstock. In addition to RME, naphtha was also blended with LFO. The aim of the current study was to determine the most important properties of the five fuel blends in order to gather fundamental knowledge about their suitability for medium-speed CI engines. The share of renewables within these five blends varied from 20 to 100 vol.%. The properties that were investigated and compared were the cetane number, distillation, density, viscosity, cold properties, and lubricity. According to the results, all the studied blends may be operable in medium-speed engines. Blending of new, renewable fuels with more conventional ones will help ease the technical transitional period as long as the availability of renewable fuels is limited.

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“…It is a sulfur-free, winter-grade diesel, and it was delivered to the Univerisity of Vaasa, UV, in September 2016. LFO fulfilled the requirements of Standard EN 590:2013 [14].…”

Section: Fuelsmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Feasibility of New Liquid Fuel Blends for Medium-Speed Engines

et al. 2019

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“…This section presents and discusses the results of the studied fuel's combustion characteristics in terms of engine in-cylinder pressure, the rate of heat release and mass fraction burned. The main results of the emission analysis are provided, based on the article of Ovaska et al [24].…”

Section: Resultsmentioning

confidence: 99%

“…All measurements were performed under steady operation conditions without engine modifications. The study continued with the emission analysis in the article by Ovaska et al [24].…”

Section: Introductionmentioning

confidence: 99%

Combustion Studies of a Non-Road Diesel Engine with Several Alternative Liquid Fuels

et al. 2019

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Sustainable liquid fuels will be needed for decades to fulfil the world’s growing energy demands. Combustion systems must be able to operate with a variety of renewable and sustainable fuels. This study focused on how the use of various alternative fuels affects combustion, especially in-cylinder combustion. The study investigated light fuel oil (LFO) and six alternative liquid fuels in a high-speed, compression-ignition (CI) engine to understand their combustion properties. The fuels were LFO (baseline), marine gas oil (MGO), kerosene, rapeseed methyl ester (RME), renewable diesel (HVO), renewable wood-based naphtha and its blend with LFO. The heat release rate (HRR), mass fraction burned (MFB) and combustion duration (CD) were determined at an intermediate speed at three loads. The combustion parameters seemed to be very similar with all studied fuels. The HRR curve was slightly delayed with RME at the highest load. The combustion duration of neat naphtha decreased compared to LFO as the engine load was reduced. The MFB values of 50% and 90% occurred earlier with neat renewable naphtha than with other fuels. It was concluded that with the exception of renewable naphtha, all investigated alternative fuels can be used in the non-road engine without modifications.

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“…Since ammonia and hydrogen are carbon-free, they do not produce carbon dioxide (CO 2 ), carbon monoxide (CO), unburned hydrocarbons (HC), nor particulates. Ammonia and hydrogen are also sulphur-free, and consequently, the emissions of sulphur oxides (SO x ) are also negligible, since these depend on the sulphur content in the fuel [2][3][4][5]. In internal combustion engines, ammonia-hydrogen blends complement their properties since ammonia is characterized by a narrow flammability range, high ignition energy, low combustion velocity, and high auto-ignition temperature.…”

Section: Introductionmentioning

confidence: 99%

NOx Reduction in Diesel-Hydrogen Engines Using Different Strategies of Ammonia Injection

Galdo

Rodríguez²

2019

Energies

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In order to reduce NOx emissions in internal combustion engines, the present work analyzes a measurement which consists of injecting ammonia directly into the combustion chamber. A commercial compression ignition engine fueled with a hydrogen-diesel blend was studied numerically. It was verified that the flow rate shape in which the ammonia was injected, particularly rectangular, triangular, or parabolic, as well as the injection duration had an important influence on NOx reduction. A 11.4% improvement in NOx reduction, corresponding to an overall reduction of 78.2% in NOx, was found for parabolic injection shape and 1º injection duration. The effect on carbon dioxide, carbon monoxide, and hydrocarbon emissions, as well as brake-specific consumption, was negligible.

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Effects of alternative marine diesel fuels on the exhaust particle size distributions of an off-road diesel engine

Cited by 21 publications

References 53 publications

Feasibility of New Liquid Fuel Blends for Medium-Speed Engines

Feasibility of New Liquid Fuel Blends for Medium-Speed Engines

Combustion Studies of a Non-Road Diesel Engine with Several Alternative Liquid Fuels

NOx Reduction in Diesel-Hydrogen Engines Using Different Strategies of Ammonia Injection

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