Дисертації з теми "Biodiesel fuele engine"
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Wallace, Scott J. "Diesel Engine Energy Balance Study Operating on Diesel and Biodiesel Fuels." Ohio University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1212586902.
Повний текст джерелаSchriefer, Timothy. "The viability of a thermoelectric fuel conditioning system for a diesel engine utilizing biodiesel /." Online version of thesis, 2008. http://hdl.handle.net/1850/7508.
Повний текст джерелаShenker, Joshua. "The compatibility of semi-synthetic engine oil with conventional diesel and biodiesel fuels." Thesis, University of Birmingham, 2015. http://etheses.bham.ac.uk//id/eprint/5607/.
Повний текст джерелаIslam, Muhammad Aminul. "Microalgae: An alternative source of biodiesel for the compression ignition (CI) engine." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/79551/4/Muhammad%20Aminul%20Islam%20Thesis.pdf.
Повний текст джерелаReddy, Varakala Shashidhar. "Evaluation of current and early production electronically controlled heavy-duty diesel engine emissions based on fuel property differences." Morgantown, W. Va. : [West Virginia University Libraries], 2006. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4718.
Повний текст джерелаTitle from document title page. Document formatted into pages; contains ix, 89 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 67-70).
Kevric, Arman. "Combustion characteristics of a compression ignition engine running on biodiesel and gasoline blended fuels." Thesis, University of Nottingham, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.605993.
Повний текст джерелаVerma, Puneet. "Role of oxygenated fuels on morphology and nanostructure of soot particles of a diesel engine." Thesis, Queensland University of Technology, 2019. https://eprints.qut.edu.au/135429/1/Puneet_Verma_Thesis.pdf.
Повний текст джерелаHossain, Md Farhad. "Experimental investigation of thermochemically-derived fuels in a diesel engine." Thesis, Queensland University of Technology, 2018. https://eprints.qut.edu.au/115545/1/Md.%20Farhad_Hossain_Thesis.pdf.
Повний текст джерелаKohli, Dhruv. "Development and Validation of a NOx Emission Testing Setup for a Diesel Engine, Fueled with Bio-Diesel." Ohio University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1236311270.
Повний текст джерелаLiu, Dai. "Combustion and emissions of an automotive diesel engine using biodiesel fuels under steady and start conditions." Thesis, University of Birmingham, 2015. http://etheses.bham.ac.uk//id/eprint/5797/.
Повний текст джерелаIbrahim, Umar. "Characterization of Biodiesel Blends Effects on Aftertreatment Systems and Aftertreatment-based Blend Level Estimation." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1451906418.
Повний текст джерелаKotze, Johan. "A comparative study on the performance of biodiesel in a modern 1.9L turbo diesel engine." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/4293.
Повний текст джерелаENGLISH ABSTRACT: This thesis comprises of the testing and evaluation of a modern diesel engine running on both biodiesel and mineral diesel on the upgraded Bio-fuels Testing Facility (BTF) at Stellenbosch University. The project was motivated by the need to install a modern diesel engine onto the existing BTF test rig for biodiesel testing. In this project, the BTF was re-designed to support a new Volkswagen 1.9L TDI engine. The capabilities of the BTF were then expanded further by the implementation of a low-cost pressure indicating system, utilising an optical pressure transducer. During the testing of biodiesel, it was found that the calorific value of the biodiesel was 14% lower than that of the tested mineral diesel. The ignition quality (cetane index) of the biodiesel was also lower than that of the mineral diesel. Even so, the engine only experienced a maximum power loss of 4.2%. During heat-release analysis, it was determined that there was no significant difference in the combustion process of biodiesel and that of mineral diesel. The conclusion could be made that biodiesel is suitable for use in modern TDI engines. Testing validated the operation of the upgraded test cell, and in trials it was determined that the test results are highly repeatable. The pressure indicating set proved to have some limitations. Only simplified heat-release analyses and reasonable indicated power calculations could be performed with the indicating set. Recommendations were made for improvement in future research.
Centre for Renewable and Sustainable Energy Studies
Zare, Ali. "Characterisation of transient diesel engine performance and emissions with oxygenated fuels." Thesis, Queensland University of Technology, 2017. https://eprints.qut.edu.au/106950/1/Ali_Zare_Thesis.pdf.
Повний текст джерелаAburass, Ali. "Diagnostics of fuel injection systems in a CI engine fuelled with biodiesel based on vibration responses." Thesis, University of Huddersfield, 2016. http://eprints.hud.ac.uk/id/eprint/31541/.
Повний текст джерелаCrawford, Morgan H. "Feasibility and Emissions of Compression Ignition Engines Fueled with Waste Vegetable Oil." [Tampa, Fla.] : University of South Florida, 2003. http://purl.fcla.edu/fcla/etd/SFE0000193.
Повний текст джерелаMoretti, Ricardo Roquetto 1982. "Mistura diesel, biodiesel e etanol anidro : uma possibilidade para reduzir o custo de produção da cadeia da cana-de-açúcar." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/264671.
Повний текст джерелаDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecânica
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Resumo: A emissão de poluentes por veículos automotores é um dos grandes problemas ambientais enfrentados na atualidade. Para resolver o problema de emissão de poluentes à modificação da matriz energética foi o caminho adotado, e para isso realizaram-se investimentos em tecnologias para fabricação de motores com melhor eficiência térmica e capazes de operar com biocombustíveis. No Brasil etanol foi o combustível objeto de estudo para realizar a mudança na matriz energética, por ser um produto produzido em larga escala no Brasil. Durante o estudo realizou-se uma revisão bibliográfica sobre os processos de produção de etanol, biodiesel e óleos vegetais. Avaliou-se a viabilidade técnica e financeira de se utilizar uma mistura de combustível óleo diesel, biodiesel versus o desempenho da mistura óleo diesel, biodiesel e etanol anidro em um motor de ignição por compressão visando não acarretar perda de performance no motor. Para a avaliação do desempenho global do motor utilizou-se um motor ciclo diesel comercial, operando com 95% de óleo diesel e 5% biodiesel e comparou-se esse mesmo motor utilizando uma mistura de 92,15% de óleo diesel, 4,85% de biodiesel e 3% de etanol anidro
Abstract: This work investigated the feasibility of using a blend of standard Brazilian diesel (which contains 5% biodiesel) and up to 5% ethanol. We characterized the mixture as fuel and measured the performance of a diesel engine operating with a blend containing 3% anhydrous ethanol, the maximum percentage of ethanol that did not reduce the cetane number of the fuel below that specified in Brazilian legislation (ANP Resolution 42). The presence of anhydrous ethanol in the mixture did not cause a significant impact on engine performance as measured by brake power, brake torque and brake specific fuel consumption tests. The thermal efficiency of the engine used in the tests was slightly higher with standard diesel than with the diesel-biodiesel-ethanol blend
Mestrado
Termica e Fluidos
Mestre em Engenharia Mecânica
Vinay, Kumar Nerella V. "An Analysis on Vehicular Exhaust Emissions from Transit Buses Running on Biodiesel Blends." University of Toledo / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1271886446.
Повний текст джерелаMamat, Rizalman. "Performance and emission characteristics of an automotive diesel engine using biodiesel fuel with the influence of air intake variables." Thesis, University of Birmingham, 2010. http://etheses.bham.ac.uk//id/eprint/1003/.
Повний текст джерелаTanugula, Shravan Kumar [Verfasser], and Henning [Akademischer Betreuer] Hopf. "Synthesis of Glycerol Based Fuel Additives to Reduce NOx Emissions from Diesel Engines Operated on Diesel and Biodiesel fuels by SNCR / Shravan Kumar Tanugula ; Betreuer: Henning Hopf." Braunschweig : Technische Universität Braunschweig, 2010. http://d-nb.info/1175826847/34.
Повний текст джерелаBueno, Andre Valente. "Analise da operação de motores diesel com misturas parciais de biodiesel." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263483.
Повний текст джерелаTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica
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Resumo: As conseqüências da adição de biodiesel ao óleo diesel foram estudadas estabelecendo-se relações de causa e efeito entre o desempenho do motor e os processos de combustão e formação de mistura. Foram incluídos, nesta discussão, aspectos como emissões poluentes, formação de mistura, dinâmica do processo de combustão, eficiência de conversão do combustível,desempenho do motor em carga máxima e consumo específico.Utilizaram-se, sob tal propósito, técnicas tradicionalmente associadas à pesquisa e ao desenvolvimento dos motores de ciclo diesel, tais como a análise de liberação de energia, a análise exergética e ensaios dinamométricos. Devido às pequenas variações observadas nos parâmetros opcionais do motor com a introdução do biodiesel, algumas modificações nos métodos aplicados para a coleta de dados experimentais e nos modelos empregados em seu processamento se mostraram necessárias. Dentre tais ajustes, pode-se destacar a formulação de um novo modelo de análise exergética para os processos ocorrentes no cilindro e a utilização de um arranjo inédito de sistema indicador. Demonstrou-se que a adição de biodiesel em baixas concentrações favorece a conversão da exergia do combustível em trabalho no interior do cilindro, proporcionando uma elevação na eficiência de operação do motor. Para os combustíveis analisados, que compreendem a adição de até 20% de biodiesel em volume, a mistura contendo 10% desta substância ofereceu as melhores características quanto ao desempenho e ao consumo específico
Abstract: The consequences of the biodiesel blends with diesel fuel were analyzed establishing cause and effect relationships between the engine performance and the combustion and mixture preparation processes. In this investigation, aspects like pollutant emissions, mixture preparation,dynamic of the combustion process, fuel conversion efficiency, performance under full load and specific fuel consumption were included.Techniques traditionally associated with diesel engines research and development were utilized for this purpose, including heat release analysis, exergetic analysis and dynamometric bench tests. In order to account for the small effects of the biodiesel introduction on the engine operational parameters, some modifications of the methods and models applied to data acquisition and post-processment were necessary. These modifications include the formulation of a new model for the in cylinder exergetic analysis and a novel arrangement of indicator system. By using the exergetic analysis, it was demonstrated that the blending of biodiesel in low concentrations increases the conversion of fuel exergy into work within the cylinder, causing an elevation on the engine efficiency. For the analyzed fuels, which enclose up to 20% of biodiesel addition in volume, the 10% biodiesel blend has presented the best results of performance and specific fuel consumption
Doutorado
Termica e Fluidos
Doutor em Engenharia Mecânica
Chandran, Davannendran. "Experimental investigation into the physico-chemical properties changes of palm biodiesel under common rail diesel engine operation for the elucidation of metal corrosion and elastomer degradation in fuel delivery system." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/35228/.
Повний текст джерелаWinward, Edward. "A study of the effects of the properties of fuel, compression ratio and EGR on diesel exhaust soot physiochemical characteristics." Thesis, Loughborough University, 2014. https://dspace.lboro.ac.uk/2134/16351.
Повний текст джерелаGarimella, Venkata Naga Ravikanth. "Exhaust Emissions Analysis for Ultra Low Sulfur Diesel and Biodiesel Garbage Trucks." University of Toledo / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1290203383.
Повний текст джерелаCastellanelli, Márcio. "Desempenho de motor Ciclo diesel em bancada dinamométrica utilizando Biodiesel etílico de soja." Universidade Estadual do Oeste do Parana, 2006. http://tede.unioeste.br:8080/tede/handle/tede/393.
Повний текст джерелаAhead of the forecast of scarcity of the oil, the ethyl ester (biodiesel) if has presented as an excellent alternative fuel option for engines cycle diesel. The characteristics of biodiesel are similar of diesel in terms of viscosity and the calorific power, being able to be used without adaptations in the engines. For accomplishment of this work, a motor cycle was used diesel, of direct injection with four cylinders, without adaptations. The engine was connected to a dynamometer and systems of acquisition of data auxiliary for the register of the necessary data. The performances of torque, power and brake specific fuel consumption for the following mixtures had been evaluated: B2, B5, B10, B20, B50, B75 and B100. The best registered performance was given with the B20 mixture.
Diante da previsão de escassez do petróleo, o éster etílico (biodiesel) tem se apresentado como uma excelente opção de combustível alternativo para motores ciclo diesel. As características do biodiesel são semelhantes as do diesel em termos de viscosidade e poder calorífico, podendo ser utilizado sem adaptações nos motores. Para realização deste trabalho, utilizou-se um motor ciclo diesel, de injeção direta com quatro cilindros, sem adaptações. O motor foi acoplado a um dinamômetro e sistemas de aquisição de dados auxiliares para o registro dos dados necessários. Avaliaram-se os desempenhos de torque, potência e consumo específico de combustível para as seguintes misturas: B2, B5, B10, B20, B50, B75 e B100. O melhor desempenho registrado deu-se com a mistura B20.
Oliveira, Filho Manoel Fernandes de. "An?lise da sensibilidade do biodiesel B5 em frotas de transporte coletivo com motoriza??o diesel." Universidade Federal do Rio Grande do Norte, 2011. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15644.
Повний текст джерелаThe aim of this study was investigate the consolidation of the biodiesel fuel used in (a) engines of urban and intercity bus companies, (b) a stationary engine. It was necessary to investigate and analyze, technologically, if the biodiesel fuels were presenting troubleshooting relative to wear of parts lied to fuel and to evaluate the consumption fluctuations of this fuel. The urban and intercity bus companies, localized in Natal, Rio Grande do Norte state, Brazil, had 41 and 12 vehicles, respectively. It were analyzed datasheet of each one vehicle during three years, since 2008 until 2010 and were interviewed the management of the maintenance team of bus companies relative to aspects concerning the substitution of the diesel fuel by the B5 biodiesel. The second aim of this study was visually inspect the wear of the parts directly lied to combustion process. For this reason, it was investigated a stationary engine, manufactured by Branco BD5, 5 HP of power, fueled by (a) diesel, (b) biodiesel B5, (c) biodiesel B20 and (d) diesel or biodiesel, both contaminated by distilled water. In this engine, its power utilizing biodiesel B5 versus diesel was lower about 5.2% and, in the investigated case of B20 versus diesel, it was lower around 11.5%
Investigou-se a consolida??o do uso do biodiesel em (a) motores de duas frotas de ?nibus, uma urbana e uma intermunicipal e (b) um motor estacion?rio. Entende-se serem necess?rios estudos para se observar, do ponto de vista tecnol?gico, se o uso do biodiesel apresenta problemas quanto ao desgaste das pe?as diretamente envolvidas com o combust?vel e tamb?m observar as flutua??es, para mais ou para menos, do consumo espec?fico desse combust?vel. As frotas de ?nibus urbana e intermunicipal, sediadas em Natal RN - Brasil, possu?am 41 e 13 ve?culos, respectivamente. Foram analisadas as planilhas de cada ve?culo no per?odo de tr?s anos, de 2008 a 2010 e entrevistados os respons?veis pela manuten??o e condu??o da frota para observar os relatos dos mesmos quanto aos aspectos resultantes da substitui??o do ?leo diesel pelo B5. O segundo objetivo deste estudo foi inspecionar visualmente o desgaste das pe?as diretamente envolvidas no processo da combust?o. Para isso, utilizou-se um motor estacion?rio da marca Branco BD5, pot?ncia de 5 CV, abastecido por (a) diesel, (b) biodiesel B5, (c) biodiesel B20 e (d) diesel ou biodiesel contaminado com ?gua destilada. Nesse motor, sua pot?ncia utilizando B5 versus diesel demonstrou ser inferior em 5,2% e, no caso investigado de B20 versus diesel, inferior em 11,5%
Patel, Kruti. "Fuel parameter testing, quality assessment and engine emissions evaluation of biodiesel (B100), diesel (D100) and its 20% blend (B20) under long term storage conditions." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/31997.
Повний текст джерелаApplied Science, Faculty of
Chemical and Biological Engineering, Department of
Graduate
Fernandes, Manoel Reginaldo. "?Formula??o de novos combust?veis base diesel: avalia??o de desempenho e emiss?es." Universidade Federal do Rio Grande do Norte, 2011. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15909.
Повний текст джерелаThe industry, over the years, has been working to improve the efficiency of diesel engines. More recently, it was observed the need to reduce pollutant emissions to conform to the stringent environmental regulations. This has attached a great interest to develop researches in order to replace the petroleum-based fuels by several types of less polluting fuels, such as blends of diesel oil with vegetable oil esters and diesel fuel with vegetable oils and alcohol, emulsions, and also microemulsions. The main objective of this work was the development of microemulsion systems using nonionic surfactants that belong to the Nonylphenols ethoxylated group and Lauric ethoxylated alcohol group, ethanol/diesel blends, and diesel/biodiesel blends for use in diesel engines. First, in order to select the microemulsion systems, ternary phase diagrams of the used blends were obtained. The systems were composed by: nonionic surfactants, water as polar phase, and diesel fuel or diesel/biodiesel blends as apolar phase. The microemulsion systems and blends, which represent the studied fuels, were characterized by density, viscosity, cetane number and flash point. It was also evaluated the effect of temperature in the stability of microemulsion systems, the performance of the engine, and the emissions of carbon monoxide, nitrogen oxides, unburned hydrocarbons, and smoke for all studied blends. Tests of specific fuel consumption as a function of engine power were accomplished in a cycle diesel engine on a dynamometer bench and the emissions were evaluated using a GreenLine 8000 analyzer. The obtained results showed a slight increase in fuel consumption when microemulsion systems and diesel/biodiesel blends were burned, but it was observed a reduction in the emission of nitrogen oxides, unburned hydrocarbons, smoke index and f sulfur oxides
A ind?stria, ao longo dos anos, vem trabalhando no sentido de melhorar a efici?ncia dos motores. Mais recentemente surgiu, tamb?m, a necessidade de reduzir as emiss?es de poluentes para se adequar ?s severas leis ambientais. Isto tem despertado o interesse de desenvolver pesquisas no sentido de substituir os combust?veis derivados do petr?leo por diversos tipos de combust?veis menos poluentes, tais como: misturas de ?leo diesel com ?steres de ?leos vegetais e ?leo diesel com ?leos vegetais e ?lcool, emuls?es e microemuls?es. Este trabalho tem como objetivo desenvolver sistemas microemulsionados a partir de tensoativos n?o i?nicos dos grupos nonilfenois etoxilados e ?lcoois l?uricos etoxilados, misturas com etanol/diesel e misturas diesel/biodiesel para uso em motores diesel. Em uma primeira fase, visando selecionar os sistemas microemulsionados, foram obtidos diagramas tern?rios das misturas, sendo os sistemas compostos por: tensoativos n?o-i?nicos, ?gua como fase polar e como fase apolar o diesel e/ou misturas diesel/biodiesel. Os sistemas microemulsionados e as misturas, que representam os combust?veis estudados, foram caracterizados quanto ? massa espec?fica, a viscosidade, o ?ndice de cetano e o ponto de fulgor. Tamb?m foram avaliados o efeito da temperatura nos sistemas microemulsionados, o desempenho do motor, e as emiss?es de mon?xido de carbono, ?xidos de nitrog?nio, hidrocarbonetos n?o queimados e fuma?a de todos os sistemas. Os ensaios de consumo espec?fico e das emiss?es em fun??o da pot?ncia foram realizados em um motor de ciclo diesel em uma bancada dinamom?trica e o analisador de emiss?es GreenLine 8000. Os resultados mostraram um pequeno aumento no consumo espec?fico para os combust?veis microemulsionados, nas misturas diesel/biodiesel em rela??o ao diesel puro, por?m com uma redu??o nas emiss?es de ?xidos de nitrog?nio, hidrocarbonetos n?o queimados, ?ndice de fuma?a e ?xidos de enxofre
Roule, Jaroslav. "Využití biomasy pro získávání elektřiny v ostrovních provozech." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-219913.
Повний текст джерелаZheng, Junnian. "Use of an Engine Cycle Simulation to Study a Biodiesel Fueled Engine." 2009. http://hdl.handle.net/1969.1/ETD-TAMU-2009-08-3234.
Повний текст джерела(9776714), Md Hazrat Ali. "Waste plastics as fuel additives: Study of solubility in biodiesel and performance of plastic-biodiesel-diesel blends in a diesel engine." Thesis, 2020. https://figshare.com/articles/thesis/Waste_plastics_as_fuel_additives_Study_of_solubility_in_biodiesel_and_performance_of_plastic-biodiesel-diesel_blends_in_a_diesel_engine/16850755.
Повний текст джерелаOberstein, S. "Performance study of a compression ignition engine fuelled with biodiesel and ethanol." Thesis, 2008. https://eprints.utas.edu.au/21069/1/whole_ObersteinSteffen2008_thesis.pdf.
Повний текст джерелаLIEN, CHIN-FENG, and 連進峯. "Testing and Analysis of Military Vehicle Engine Running on Biodiesel Fuel." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/42603850815780036387.
Повний текст джерела國防大學理工學院
車輛及運輸工程碩士班
100
This thesis deals with the military diesel engines running on different concentrations of biodiesel (B2, B10, B30, B50 and B100). The results of engine testing show that engine running on B2 fuel has the best output torque under no modifying engine setting condition. The deviations of the output torque of engine with different fuel are reduced by increasing the engine load. The emission level of NO can be reduced by increasing the proportion of biodiesel. The engine running on B2 and B100 had the similarly characteristic in output torque and the NO emission when the injection timing was adjusted. Either advancing or retarding the injection timing based on the original setting, the torque shows a declining trend. The NO emission increases significantly by advancing injection the timing. The endurance testing of the fuel pump shows that the biodiesel fuel can help to maintain pump performance. The wear of carbon brush and commutator are significantly reduced by increasing the biodiesel proportion in the blended fuel. The wear of bearing has less effect with the biodiesel proportion. The experiment showed that B10 and B50 have the best anti-wear characteristic. The compatibility testing between fuels and horses shows that the SAE R6 and R9 horses have obviously expanding phenomenon. The SAE R10 horse has the best compatibility with biodiesel fuel. The low-temperature fluidity of biodiesel fuel is a major concern problem of diesel vehicles in the cold weather environment.
Lin, Ying-wei, and 林英瑋. "Control Parameter Calibration of a Common-rail Diesel Engine Fueled with Biodiesel." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/57980642976030758439.
Повний текст джерела國立臺灣科技大學
機械工程系
101
Biodiesel is an attractive alternative energy because its characteristic of renewable, biodegradable, could be used in pure form or blended with petroleum diesel and could reduce toxic emission. But the different in composition of biodiesel and petroleum diesel greatly influenced the combustion process. If we want to use biodiesel as fuel of diesel engine, we should change the control strategy for maintaining the engine performance.The purpose of this study is to determine the optimal engine decision-making for petroleum diesel (D100) and biodiesel (B100). Parameters of the engine such as injection timing, injection duration, common-rail fuel pressure and exhaust gas recirculation (EGR) are fine-tuned using the MotoTron Control System so as to optimize the engine performance based on the results from the engine dyno tests. Combustion analysis is conducted via the measurement of cylinder pressure measurement. The main goal is to find the balance between engine torque and emission to optimize the engine.
Li, Rong-Ji, and 李融奇. "Fuel Properties and Engine Performance of Biodiesel Produced from Crude Fish Oil." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/20341791710116430886.
Повний текст джерела國立臺灣海洋大學
輪機工程系
95
Abstract Crude fishing oil and fishing dregs are produced from manufacturing process for fishing products. These by-products are generally used as fish freed after being dried. In this study, crude fishing oil is applied to be raw material for biodiesel production. The biodiesel which is alternative fuel for engines or boilers can reduce impact of environmental pollution from fossil fuel. The biodiesel produced from the current process was tested its fuel properties and engine performance. The experimental results show that the biodiesel of crude fishing oil appeared to have larger heating values, cetane index, carbon residue and black smoke opacity while lower flash point in comparison with those of biodiesel from soybean oil. In the aspect of engine performance, biodiesel of crude fishing oil shows to have lower fuel consumption rate and higher brake fuel conversion efficiency. However, the brake fuel conversion efficiency of the super low sulfur diesel appeared to increase and larger than that of the biodiesel when the engine speed increased. The effects of antioxidant on oxidative stability of the biodiesel where studied as well. The biodiesel added with antioxidant has larger methyl ester content while lower acid number, kinematic viscosity and carbon residue. Keyword : Biodiesel, Crude fish oil
Esquivel, Jason. "Performance Characterization of a Medium-Duty Diesel Engine with Bio-Diesel and Petroleum Diesel Fuels." 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2008-12-234.
Повний текст джерелаLin, Yan-Hong, and 林延鴻. "Numerical Analysis of Combustion Behaviors in A Diesel Engine Fueled with Biodiesel Blends." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/69947399682354698699.
Повний текст джерела國立臺灣科技大學
機械工程系
103
Biodiesel made from renewable resources and waste lipid is the most promising surrogate for diesel in the future. To assess the performance of an existing diesel engine fueled with various blends of biodiesels, a CFD model based on the real dimensions of a Mitsubishi 4M42-4AT2 diesel engine equipped with a turbocharger and a common-rail oil injection system is constructed in this work. This model will be used to investigate the combustion behaviors of biodiesels and the flow field inside the combustion chamber. The In-cylinder module provided by Ansys Fluent together with the built-in turbulence model for solving fluid flow motion and various phenomenon models simulating the behaviors of oil droplets inside the combustion chamber will be used to simulate the interesting dynamics of a combustion engine. For effectiveness and convenience, the RNG k-epsilon turbulence model is adopted in this research.Discrete phase model (DPM) is used to simulate the oil injection. Species model is used to predict the combustion behaviors of injected fuels. Initial conditions and boundary conditions such as pressure and temperature at inlet and exhaust pressure at outlet will be given based upon the experimental data. We hope that the numerical simulation can provide us the data that were hard to obtain in experiment. Revealed by both experimental data and numeric computation, the ignition delays of biodiesels of various blends are nearly the same. This may be attributed to the fact that biodiesel has a greater cetane number. This leads to the earlier ignition of biodiesel than the pure diesel, the heat released will in turn result in the ignition of the surrounding oils. Thus we propose that the cetane number of biodiesels is equal to the cetane number of pure biodiesel. Since the oil is not premixed with air in diesel engines, the reaction rate of oil and oxygen is therefore controlled by the turbulence mixing effect of the eddy dissipation instead by the thermodynamic properties of oils. Under the same revolution speed and torque, we expect the flow fields will be quite similar. Consequently we can expect the reaction rates of biodiesels of various blends are almost identical, if the engine is running under the same revolution speed and torque. Our simulations also indicate that oil injection with added water may result in longer ignition delay, which in turn results in the lower pressure and lower temperature in the cylinder. On the contrary, biodiesel tends to shorten the ignition delay of the mixed oils. This seems to open up a door of controlling the ignition delay of biodiesel of various blends by adding some extra amount of water during oil injection.
Lee, Yu-Tian, and 李昱廷. "Fuel properties and engine performance of biodiesel produced from high-gravity packed bed." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/71306679544799933972.
Повний текст джерелаLai, Jui-Ming, and 賴瑞明. "The Study of effecting Biodiesel Mixed Fuel on Fuel Injection Pressure in a DI Diesel Engine(I)." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/26486226363855771715.
Повний текст джерела國立臺北科技大學
車輛工程系碩士班
92
In order to extend the using life of the Premium diesel and reducing the exhaust pollution of the Diesel Engine, this study added bio-diesel into kerosene as the mixed fuel to replace the Premium diesel. Although it had more fuel consumption, about 0.1% than Premium diesel, it could decrease the concentration of Smoke and NOx to 19% and 8%. If we lower the pressure of the fuel injection, it could decrease the fuel consumption and reduce Smoke concentration to original fuel injection pressure about 0.5% and 11%, but it could increase the NOx and HC exhaust density about 8% and 67%. And if we higher the pressure of the diesel injection, it could increase the fuel consumption, Smoke concentration and HC concentration to original fuel injection pressure about 1%, 12% and 23%,but it could decrease the NOx concentration about 4%. By using mixed fuel, adding bio-diesel into kerosene, it was quite inappropriate to higher or lower the pressure of the fuel injection.
(9780926), Muhammad Bhuiya. "An experimental study of 2nd generation biodiesel as an alternative fuel for diesel engine." Thesis, 2017. https://figshare.com/articles/thesis/An_experimental_study_of_2nd_generation_biodiesel_as_an_alternative_fuel_for_diesel_engine/13449476.
Повний текст джерелаHsiao, Hsing-Chang, and 蕭興前. "The Study of Effecting Biodiesel Mixed Fuel on Inject Pressure in a DI Diesel Engine (Ⅱ) ─ Biodiesel+Kerosene+Premium Diesel ─." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/52155386523326645520.
Повний текст джерела國立臺北科技大學
車輛工程系碩士班
92
In order to extend the using life of the Premium diesel and reducing the exhaust pollution of the Diesel Engine, this study added bio-diesel into kerosene and Premium diesel as the mixed fuel to replace the Premium diesel. Although it had more fuel consumption, about 1.1% than Premium diesel, it could decrease the concentration of Smoke and NOx to 12.3% and 2.6%. If we lower the pressure of the fuel injection, it could decrease the fuel consumption ,Smoke and HC concentration to original fuel injection pressure about 1.3%,15.2% and 12.7%, but it could increase the NOx exhaust density about 7.5%. And if we higher the pressure of the diesel injection, it could increase the fuel consumption, Smoke concentration and HC concentration to original fuel injection pressure about 1%, 17.6% and 5.5%,but it could decrease the NOx concentration about 4%. By using mixed fuel, adding bio-diesel into kerosene and Premium diesel, it was quite appropriate to higher or lower the pressure of the fuel injection.
Chen, Yu-Lin, and 陳玉麟. "A Study on Engine Performance,Exhaust Gas Emission and Combustion Characteristics of Biodiesel Fuel with Hydrogen in a DI Diesel Engine." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/85unf3.
Повний текст джерела國立臺北科技大學
車輛工程系所
98
WOME and WOME+H2 are the blended fuels operated in this study without any modifying the body structure and design parameters of the single-cylinder direct injection diesel engine. Extra air mass, H2, was injected into intake manifold by 2 ℓ/min stably for blending with WOME before burning on. And the differences of energy efficiency, exhaust gas emissions, exhaust temperature as well as combustion characteristics were analyzed to evaluate the performance which is H2 blended with WOME. The experimental results demonstrated that the energy efficiency of WOME+H2 in total average value is higher than WOME about 3.89% at three specified engine loads and speeds. Moreover, ignition delay period and premixed combustion phase of WOME+H2 are more advanced, so the concentrations of smoke and HC in total average value are lower than WOME about 13.57% and 9.16%, respectively. Besides, due to more advanced at initial premixed combustion phase, NOx concentration in total average value is higher than WOME about 8.54%. Although WOME+H2 in late combustion phase is low burning temperature, H2 has characteristic of high heat value. Thus its EGT value is higher than WOME about 1.65%.
TSOU, WEN-JIE, and 鄒文偕. "Numerical Analysis of Combustion Behaviors and NOX Emission in a Diesel Engine Fueled with Biodiesel Blends." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/94632930494361244204.
Повний текст джерела國立臺灣科技大學
機械工程系
104
Since the thermophysical properties of biodiesel blends are close to that of No 2 diesel oil, they can be used and combusted in existing diesel engines without any modification directly. In addition, biodiesel blends help improve the lubrication between engine parts due to their higher viscosity. Currently, B2 and B5 biodiesel blends are used in vehicles for civic transportation in many countries. Biodiesel blends can be converted from vegetable oils such as soybean oil and waste oil. Therefore, they are good for environment protection. Furthermore biodiesel blends have higher cetane rating compared to diesel fuels, they are more ready-to-burn and they exhibit better combustion quality. On the other hand, they have the disadvantages of producing higher harmful NOx emission due to the oxygen content in biodiesel blends. The major purpose of the current study is to investigate the combustion behaviors of various biodiesel blends in diesel engines and their effects on the engine performance and emission. Hopefully, the results of this study can provide some contribution to the development of next generation of biodiesel engines in the near future. In this study, the computational fluid dynamics (CFD) model for a real engine is constructed to investigate various physical phenomena, flow fields, cylinder pressure fields, heat release rates, and NOx emission inside a diesel engine combusting biodiesel blends. The flow field is obtained by solving the Navier-Stokes equations and various empirical models are used to model the behaviors of fuel injection, atomization and evaporation due to the extreme complexities in numerical calculation. To justify the validity of our numerical model, the results of the steady state cold flow numerical simulation were compared to the experimental data first. Then the model will be used to predict the combustion behaviors such as in-cylinder pressure, temperature, and heat release rate inside the diesel engine burning various biodiesel blends. These data will be checked against the in-cylinder pressure obtained from experiment for verification. In the end, we will use this model to investigate the relationship between the NOx emission and the the temperature field inside the cylinder. Decent and promising correlation is obtained by comparing the numerical prediction to the NOx emission data obtained from experiment.
Chang, Chia-Yi, and 張嘉益. "Polycyclic Aromatic Hydrocarbons and Cytotoxicity Analysis of Diesel Engine Exhaust Particles Using Biodiesels as Fuels." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/60495129519018411088.
Повний текст джерела國立成功大學
環境工程學系碩博士班
97
This study was aimed to investigate the characteristics of chemical toxicity and biotoxicity associated with diesel exhaust particles from biodiesels. A diesel engine connected to a dynamometer was used to generate diesel exhaust particles (DEP), which contained combustion products such as PAHs. The engine was tested using diesel fuel and biodiesel blends (1 and 10% of biodiesel by volume). The characteristics of the weight of the particulate emissions, particulate size distribution and polycyclic aromatic hydrocarbons (PAHs) concentrations were investigated. Finally, the normal human bronchial epithelial cells (BEAS-2B) were used for cell survival and toxicity tests to expound the correlation between the diesel particle size and its biological toxicity, and to further assess the impact of using biodiesel on the environment. A micro-orifice uniform deposit impactor (MOUDI) was used to carry out the engine emissions of particulate sub-bands. The results of particulate emissions show that, raising the engine speed and the load would result in a decrease of the concentration of particulate emission. Also, using diesel resulted in the lowest particle concentration, followed by fuel B1, while fuel B10 produced the highest concentration of particulate emissions. Analysis of PAHs indicates that the major species are three- to five-ringed PAHs. In terms of PAH concentrations vs. particle size, it is found that the fine sized (3.2 ~ 0.32 μm) and ultrafine sized (0.32 ~ 0.056 μm) particles contribute to a higher emission of PAHs. The addition of biomass may lower the concentrations of PAHs in the fine sized particles, while it increases those in ultrafine particles, implying that the addition of biodiesel will definitely affect the exhaust emissions from an engine. Cell survival results show that at the tested engine speed, the order of the particle cytotoxicity are B1> B10> D, meanwhile, in terms of BaPeq the relative toxicity are also B1> B10> D. This coincidence implies that the cytotoxicity of particulate PAHs is well correlated to the toxicity equivalency quantity (TEQ). The cell viability results also showed that the particle size is not related to the cytotoxicity. Genotoxicity results show that under various engine speeds, the genotoxicity of particles is D> B1> B10, and the toxicity level for B10 is very close to the control group (DMSO), implying that B10 is not genotoxic, but the use of commercial diesel and biodiesel in the engine will generate particulates which may cause DNA damage. It was also found that there is no clear relationship between particle size and genotoxicity. To sum up the conclusion, the toxicity of the exhaust depends on the difference of the fuel, not on the particle size in the exhaust particle. B10 products a higher concentration of emissions than the other fuels, and may cause engine wear. B10 has the lowest toxicity equivalency quantity (BaPeq) among all the tested fuels; it also generated particles with the lowest cytotoxicity and genotoxicity. In other words, adding a low ratio (such as 10%) of palm biodiesel will reduce the biological toxicity of particles in the exhaust.
Luo, Jhong-Siou, and 羅仲修. "The Study of Azeotropic Effect to Improve Diesel Engine Performance with Ethanol-Butanol Blended Biodiesel Fuel." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/ch643m.
Повний текст джерела國立臺北科技大學
車輛工程系所
102
With the emerging of issues concerning depletion of fossil fuels, the greenhouse effect, and global rising temperatures, nations all over the world had started to emphasize saving energy and reducing carbon dioxide and thus developing renewable resources had been hot topics for research. Renewable resources such as biodiesel and bioethanol could help slow down the depletion of fossil fuels, reduce exhaust emission from internal combustion engines, and cut down on carbon dioxide emission. Therefore, it had been a trend to use renewable fuels or to mix gasoline with renewable fuels. In some recent researches, researchers added alcohol fuels to diesel to improve the performance of diesel engines and exhaust emission because of the higher oxygen content in alcohol fuels. It was also argued that mixing two different alcohol fuels with different boiling points could lead to azeotropic effect to improve the performance of diesel engines and exhaust emission. In the study, the impacts of azeotropic effect on the performance of diesel engines and exhaust emission were discussed in two situations. First, only ethanol or butanol was mixed with diesel. Second, the ethanol-butanol blended fuel was added to diesel. The findings of the study proved that the ethanol-butanol blended fuel could cause better azeotropic effect compared with only ethanol or only butanol blended fuels. The consumption of fuel was improved by five to ten percent, the concentration of HC emission was ameliorated by three to eight percent, and the maximum torque of engine was elevated by one percent. However, the concentration of smoke emission and of NOX emission were between those of ethanol blended fuel and butanol blended fuel. Besides, ethanol blended fuel with a higher oxygen content also showed batter concentration of smoke emission and batter concentration of NOX emission than those of butanol blended fuel. Butanol blended fuel with a higher calorific value manifested a better fuel consumption and concentration of HC emission than those of ethanol blended fuel.
Wu, Min-Shiu, and 吳明修. "A study on the fuel properties and engine performance of biodiesel refined from used cooking oil." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/49404209407779663619.
Повний текст джерела國立臺灣海洋大學
輪機工程系
92
Abstract Air pollutants which are produced from burning fossil fuel in diesel engines would result in damage to environment. Diesel engines have been considered as one of major pollution sources in metropolitan regions. Biodiesel is a clean alternative fuel for fossil diesel. The burning of biodiesel generally produces lower concentrations of CO, HC, and PM, and almost zeros SO2 emission which would reduce corrosion rate of metallic parts of a power plant. Biodiesel can not only be used as fuel but also as lubricant for moving parts. The higher flash point of biodiesel would also promote safety of its usage, storage and transportation. Hence, the study of biodisel is one of emphases for the development of alternative clean fuel. The use of recycled used cooking oil to refine biodiesel may reduce the cost of biodiesel production. An ultrasonic vibration method can be used instead of a method of heating and stirring for enhancing a transesterification reaction. The transesterification reaction time may therefore be shortened. The cavitation phenomenon which occurs during ultrasonic vibration is able to curtail the thickness of liquid film of the reactant mixture. The mixture between methanol and triglyceride can then be accelerated, which will prevent the loss of biodiesel from being mixing with the soap during long reaction time. Moreover, the use of transesterification reaction accompanied with ultrasonic vibration may reduce the required amount of catalyst, proceed at a room temperature, and omit the installation of a heater. The higher the vibration frequency of an ultrasonic vibrator is, the larger biodiesel yield would be obtained. This study applied ultrasonic vibration method to proceed transesterification reaction for biodiesel production. At the first stage of the experiment, the sample No.1 biodiesel was refined from the used cooking oil by employing the method of transesterification reaction together with ultrasonic vibration. A peroxidation process was further employed to refine the sample No.1 biodiesel to produce the sample No.2 biodiesel in order to improve the fuel properties and oxygen content. The experimental results show that the acid value of the sample No. 2 biodiesel was slightly larger than the sample No. 1 biodiesel while the oxygen content and cetane index increased considerably. Higher oxygen of biodiesel can facilitate combustion reaction. The burning of the sample No.2 biodiesel in the diesel engine was also observed to form lower NOx, CO and CO2 concentrations in the exhaust gas. Larger cetane index of the sample No. 2 biodiesel than the commercialized biodiesel and diesel caused decrease of ignition delay and thus improvement of the combustion efficiency. At the second stage of the experiment, the sample No. 3 biodiesel was further refined from the sample No. 2 biodiesel. The n-hexadecane which is a cetane improver was added in the refining process for biodiesel production. The n-hexadecane agent and methanol was mixed prior to the transesterification reaction. The sample No. 3 biodiesel was found to produce lower CO, CO2 and smoke opacity than the diesel. In addition, the NOx emission from burning the sample No. 3 biodiesel was lower than from burning the sample No. 2 biodiesel by about 8% at the engine torque of 15 kgf-m.
McGuire, Thomas P. Yeboah Yaw D. Boehman André L. "Combustion of diesel fuel blended with partially oxidized biodiesel in a direct injection compression ignition engine." 2009. http://etda.libraries.psu.edu/theses/approved/PSUonlyIndex/ETD-3948/index.html.
Повний текст джерелаCheng-HanHung and 洪誠漢. "Study on combustion characteristic of liquefied petroleum gas / biodiesel dual fuel engine with exhaust gas recirculation." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/66754297118349730774.
Повний текст джерелаJIANG, BING RUI, and 蔣秉叡. "The Study of Adding Nano Al2O3 into Different High-Density Emulsified Biodiesel Fuel for Diesel Engine." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/vqvk8t.
Повний текст джерела國立臺北科技大學
車輛工程系
106
In recent years, countries have also stepped up efforts to develop smart vehicles. To provide more efficient services and respond to green energy policy. Many experts and scholars have added emulsified fuel to diesel engines for testing. Water droplets in emulsified fuels are prevented from directly contacting the engine by mingling emulsifiers and causing internal rusting. However, although it can improve the combustion efficiency and reduce the emission of NOx, it also reduces the calorific value due to the presence of moisture, resulting in more fuel consumption. Therefore, adding metal nanofluids can improve its combustion characteristics.The results show that the average BSFC of the DW3A150 nano-blend fuel is different from that of the DW5A150 and DW8A150. rates were lower by about 2.19% and 3.82%, respectively, while the average BMEP 1.46% and less than 0.91%.
Siwale, Lennox Zumbe. "Effect of oxygenated additives in conventional fuels for reciprocating internal combustion engines on performance, combustion and emission characteristics." 2012. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1001029.
Повний текст джерелаDiscusses how to reduce the negative impacts of petroleum oil based fuels in reciprocating engines on the environment through the use of oxygenated (alcohol) blends, while not deteriorating engine performance. The specific objectives are as follows: To evaluate the performance characteristics of n-butanol-diesel blends: B5, B10 and B20, in a direct-injection turbo-charged diesel engine and to compare findings with a study that was carried out by others (Sayin, 2010). To compare the performance, combustion and emission characteristics of dual alcohol-gasoline with single alcohol-gasoline blends fired in a naturally-aspirated (NA) spark ignition (SI) engine. To compare the combustion and emission characteristics of dual alcohol (methanol-n-butanol-gasoline) blends with single alcohol (methanol-gasoline) blends in a single-cylinder SI engine. To evaluate the combustion and regulated emission characteristics of DF and n-butanol/diesel blends (B5, B10, and B20 where B5 represents 5 % shared volume of n-butanol to 95 % diesel fuel) fired in a high load turbo-charged diesel engine and to compare the findings with a study that was conducted by Raslavicius & Bazaras, (2010).
Fan, Chiao-Lei, and 范巧蕾. "An investigation on fuel properties and characteristics of engine performance of biodiesel produced by supercritical fluid technique." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/59503231894559993718.
Повний текст джерела國立臺灣海洋大學
輪機工程系
95
摘要(英) Biodiesel which is produced from vegetable oil, animal fat or used cooking oil has been considered as clean fuel or fuel additive. Raw oil, alcohol and catalyst are generally reacted under subcritical pressure to produce biodiesel. In this study, supercritical methanol technique is applied to produce boidiesel by using used cooking oil and Camellia oleifera Abel oil as raw material in order to curtail transesterification time and production cost. The biodiesel is thereafter analyzed its fuel properties and engine performance for further improvement of process. The experimental results show that the effects of contents of water and free fatty acids in raw oil are insignificant on transesterification reaction and therefore this technique can be applicable to most of raw oils. In addition, no catalyst is required in this process and thus the costs of catalyst additive and removal are reduced. In comparison with those properties of the commercial biodiesel, the biodiesel of used cooking oil has higher heating value, flash point, specific gravity and water content while lower kinematic viscosity, carbon residue and cetane index. The biodiesel of Camellia oleifera Abel oil has higher flash point and specific gravity while lower heating value, kinematic viscosity, water content, carbon residue and cetane index than those of the commercial biodiesel. In the aspect of engine characteristics, the biodiesel of used cooking oil appeared to have lower fuel consumption rate, bsfc, excess air and O2 emission while higher brake fuel conversion rate, equivalence ratio, CO, CO2 and NOx emissions than the properties of the commercial biodiesel. The biodiesel of Camellia oleifera Abel oil, in comparison with those of the commercial biodiesel has larger fuel consumption rate, bsfc, equivalence ratio, CO, CO2 and NOx emissions, while lower brake fuel conversion rate, excess air, exhaust gas temperature and O2 emission.