Analysis of Engine Oil Deterioration under Bio Diesel Fuel Use

2009 ◽  
Author(s):  
Daichi Shimokoji ◽  
Yosuke Okuyama
Keyword(s):  
Diesel Fuel ◽  
Engine Oil ◽  
Fuel Use ◽  
Oil Deterioration

scholarly journals Использование эффекта Ранка–Хилша для восстановления эксплуатационных свойств отработанных моторных масел

2020 ◽  
Vol 44 (3) ◽  
pp. 80-86
Author(s):  
Keyword(s):  
Centrifugal Force ◽  
Diesel Fuel ◽  
Rotational Motion ◽  
Tangential Velocity ◽  
Theoretical Explanation ◽  
Engine Oil ◽  
Energy Separation ◽  
Main Task ◽  
Centrifugal Effect ◽  
The One

Предпринят анализ возможности создания устройства по удалению жидких фракций (воды и топлива) из отработанного моторного масла для восстановления его эксплуатационных свойств с целью повторного использования в судовых дизелях. Показано, что необходимость повторного использования отработанных моторных масел обусловлена требованиями защиты окружающей среды. Проанализированы особенности вихревого движения жидкости как твёрдого тела или как «потенциального вихря» (вихри Ренкина). Однако эти особенности не объясняют эффект Ранка–Хилша. Теоретическое объяснение эффекта Ранка–Хилша: в вихревых трубах происходит энергетическое разделение газа за счёт центробежного эффекта турбулентных элементов по величине тангенциальной скорости. В результате разделения заторможенных элементов под действием центробежной силы и их адиабатного расширения происходит снижение температуры центрального потока. На основе использования эффекта Ранка–Хилша, мы полагаем, можно создать установку по отделению от масла топлива и воды. Идея заключается в том, что вращательным движением тонкой плёнки масла, содержащей водотопливные фракции, как и любым другим вращательным движением, создаётся центробежная сила. Дисперсная фаза воды, как обладающая большей плотностью, отжимается к периферии, а дизельное топливо с меньшей плотностью находится ближе к центру вращения. Моторное масло, имеющее промежуточное значение плотности, будет находиться между этими слоям воды и топлива. Согласно эффекту Ранка–Хилша, температура на периферии будет выше, она постепенно понизится от слоя воды к слою топлива. Основная задача при разработке устройства удаления жидких загрязнителей – создать такие давление и температуру, чтобы на наружном слое происходило выпаривание влаги, а с внутреннего слоя испарялось топливо, при этом защищённое этими двумя слоями масло, имеющее температуру кипения выше, чем у дизельного топлива и ниже, чем у воды, не испарялось. Ключевые слова: регенерация, моторное масло, эффект Ранка–Хилша, удаление воды, удаление топлива, устройство для удаления воды и топлива из масла. An analysis is made for the possibility of creating a device for removing liquid fractions (water and fuel) from used engine oil to restore its operational properties for subsequent reuse in marine diesels. It is shown that the need for reuse of used motor oils is based on environmental protection requirements. The features of the vortex motion of liquid as a solid body or as a “potential vortex” (Rankine vortex) are analyzed. However, these features do not explain the Ranque–Hilsch effect. A theoretical explanation of the Ranque–Hilsch effect is that in the vortex tubes energy separation of the gas occurs due to the centrifugal effect of the turbulent elements in terms of the tangential velocity. As a result of the separation of inhibited elements under the action of centrifugal force and their adiabatic expansion, the temperature of the central stream decreases. Based on the use of the Ranque–Hilsch effect, we believe it is possible to create a facility for separating fuel and water from oil. The idea is that the rotational motion of a thin film of oil containing water-fuel fractions, like any other rotational motion, creates a centrifugal force. The dispersed phase of water, as the one of higher density, is squeezed to the periphery, and diesel fuel as the one of lower density gets closer to the center of rotation. Engine oil of intermediate density will then be positioned between these layers of water and fuel. According to the Ranque–Hilsch effect, the temperature at the periphery will be higher; it will gradually decrease from the water layer to the fuel layer. The main task in developing a device for removing liquid pollutants is to create such pressure and temperature that moisture evaporates on the outer layer, and fuel evaporates from the inner layer. At the same time, engine oil protected by these two layers, the boiling point of which is higher than that of diesel fuel and lower than that of water, would not evaporate. Keywords: regeneration, motor oil, Ranque–Hilsch effect, water removal, fuel removal, device for removing water and fuel from oil.

scholarly journals Experimental Testing of Combustion Parameters and Emissions of Waste Motor Oil and Its Diesel Mixtures

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5950
Author(s):  
Dragiša Đorđić ◽  
Milan Milotić ◽  
Zoran Ćurguz ◽  
Slavko Đurić ◽  
Tihomir Đurić
Keyword(s):  
Diesel Fuel ◽  
Alternative Fuels ◽  
Internal Combustion Engines ◽  
Experimental Testing ◽  
Hydrocarbon Fuel ◽  
Engine Oil ◽  
Heat Output ◽  
Gas Temperature ◽  
Waste Engine Oil ◽  
Motor Oils

The production of hydrocarbon fuel from waste engine oil is an excellent way to produce alternative fuels. The aim of the research in this paper is obtaining fuel with a mixture of waste engine oil (WMO) and diesel fuel that can be used as an alternative fuel for internal combustion engines and low power heat generators. With this goal in mind, tests were conducted to estimate the combustion parameters and emissions at a low heat output of 40 kW. Waste motor oils (WMO) and four of its diesel mixtures were used, varying in weight from 20% WMO to 50% WMO. Test results were analysed and compared with diesel fuel. Higher NO, CO and CO2 emissions were determined for WMO and its mixtures compared to diesel fuel. The flue gas temperature in the kiln was high for all WMO and diesel blends, which indicates the efficiency of the input energy. The absorption of flue gases in the scrubber with distilled water showed higher presence of sulphates, sulphides, nitrates and nitrites compared to allowable values.

scholarly journals Possibilities of Detecting Diesel Leaking Into Engine Oil with Fuel Sniffer

2019 ◽  
Vol 67 (3) ◽  
pp. 749-755
Author(s):  
Marie Sejkorová ◽  
Petr Jilek
Keyword(s):  
Methyl Ester ◽  
Diesel Fuel ◽  
Linear Dependence ◽  
Systematic Errors ◽  
Point Of View ◽  
Engine Oil ◽  
Accuracy And Precision ◽  
Rapeseed Methyl Ester

The paper presents the possibilities of detecting diesel fuel without rapeseed methyl ester (RME) in the concentration range of 0–9.54 wt% leaking into engine oil of SAE 15W – 40 viscosity specifications using Spectro FDM Q600 – Fuel Sniffer. The results are confronted with regard to the determination of the accuracy and precision of the repeatability of measuring diesel fuel in oil with this type of instrument. By expressing the linear dependence between the diesel concentration determined by Fuel Sniffer and the actual diesel concentration in engine oil of model samples, correlation R = 0.998 was obtained. From the point of view of verifying the accuracy of the method, it was not proved that it would be burdened with systematic errors. Precision of measurement by this instrument, expressed as repeatability, reached RSD below 5% only for the concentration of diesel in the oil higher than 3.33 wt%.

Evaluation of Engine Oil Deterioration Using a Comb-Shaped Electrode

2016 ◽  
Author(s):  
Moritsugu Kasai ◽  
Nao Yoshimura ◽  
Keiichi Watanabe
Keyword(s):  
Engine Oil ◽  
Oil Deterioration

Determination of the pH sensitivity level of anodized Ta2O5 nanotubular using pH buffer solution: Towards engine oil deterioration sensor

2021 ◽  
Author(s):  
Nur Lili Suraya Ngadiman ◽  
Rozina Abdul Rani ◽  
Zulasyraf Farhan Zulkifli ◽  
Muhammad Firdaus Abdullah ◽  
Siti Rabizah Makhsin ◽  
...  
Keyword(s):  
Ph Sensitivity ◽  
Engine Oil ◽  
Buffer Solution ◽  
Oil Deterioration ◽  
Sensitivity Level ◽  
Ph Buffer Solution ◽  
Ph Buffer

Study for Effects of Bio-Diesel Fuel and Engine Oil on Exhaust Emission and PN of Diesel Engine

2015 ◽  
Author(s):  
Kazutoshi Mori ◽  
Koji Sorimachi ◽  
Kunihisa Eguchi ◽  
Jun Kawase ◽  
Ryuichi Suzuki
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Engine Oil ◽  
Exhaust Emission
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