Relevant bibliographies by topics / Motor Flex

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Motor Flex'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Motor Flex"

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Vazzolér, Luiz Fernando Rigacci, and Maria Beatriz Machado Bonacelli. "Geração e Uso de Etanol Combustível: oportunidades e limites da tecnologia flex fuel." Revista Gestão & Conexões 3, no. 2 (2014): 111–33. http://dx.doi.org/10.13071/regec.2317-5087.2014.3.2.8293.111-133.

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Este artigo explora o projeto da tecnologia flex-fuel, resgatando a história do pioneirismo das pesquisas e do uso do etanol como combustível desde os anos 1930, passando pelo Pró-álcool nos anos 1970 e chegando ao motor flex-fuel nos anos 2000. Destaca a instalação da indústria automobilística nacional e o próprio projeto e desenvolvimento do motor de combustão interna no século XIX, utilizando os conceitos de trajetórias tecnológicas e coevolução técnica e institucional. Mesmo com o conhecimento e a experiência na geração e uso de combustível alternativo e, recentemente, em tecnologias alternativas para motores, discute-se se o Brasil está perdendo uma oportunidade para alçar o etanol e a tecnologia do motor flex-fuel como opções às trajetórias tecnológicas vigentes.
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Zhu, Lin Jian, Zeng Rong Su, Zhen Zou, and Jian Feng Li. "Research on the Space Meshing Tooth Profile of Giant Magnetostrictive Harmonic Motor." Applied Mechanics and Materials 421 (September 2013): 10–15. http://dx.doi.org/10.4028/www.scientific.net/amm.421.10.

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A methodology to calculate the meshing tooth of giant magnetostrictive harmonic motor is proposed in this paper. The deformation curve of the flex spline of the giant magnetostrictive harmonic motor was investigated with Fourier function. A kinematic model of harmonic drive was established when the involute profile is selected as the flexible gear tooth shape and the circular spline is obtained following the envelope theory, thereby generating the kinematic simulation as well as the trajectory of the circular spline teeth with respect to the flex spline. Finally, the relationship between the cone angle of flex spline and the engagement profile is discussed; together with an improvement strategy-equal width shrinkage of circular spline.
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Brown, Alan S. "Custom Motor? Give Us Two Weeks." Mechanical Engineering 130, no. 09 (2008): 52–55. http://dx.doi.org/10.1115/1.2008-sep-7.

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This article focuses on a US motor manufacturer who keeps its products out of the commodities competition. Motors consist of a variety of stock parts, like cast metal housings, shafts, bearings, end plates, rotors, and stators. The size of the components and the winding of the stator determine specifications. Most manufacturers keep an inventory of parts on hand. For most companies, it is not efficient to set up tools to make only one or two motors at a time and then switch to another set of parts and tools. To keep plants operating efficiently, manufacturers essentially stockpile orders for similar motors until they reach an economical order quantity. Flex Flow makes extensive use of information technology. Each factory work cell has its own computer. As parts move through the system, the computer provides each operator with a list of materials and instructions for the component that will be built next. Baldor invests heavily in training, and this is where it really pays off, since workers can shift effortlessly from one type of motor to another.
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Dos Reis, Silvio Rodrigo, and Elaine Aparecida Da Silva. "Motores Elétricos Flex a Etanol: uma nova Era no Setor Automotivo Mundial." Revista de Ciências Exatas e Tecnologia 12, no. 12 (2018): 45. http://dx.doi.org/10.17921/1890-1793.2017v12n12p45-48.

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O conceito de motores elétricos está inserido na sociedade desde meados do século XIX. O advento do petróleo e a maior eficiência do motor a combustão interna a gasolina fez com que o desenvolvimento dos elétricos permanecesse adormecido por várias décadas. Ressurgiu este conceito após a conscientização mundial sobre problemas de poluição ambiental, que os motores a combustão, movidos com petróleo e derivados trouxeram ao longo dos anos, originando a introdução de políticas de desenvolvimento sustentável, que visa eliminar a circulação de veículos com motores a combustão interna pelos países europeus nos próximos anos. Fontes alternativas de energia, como o etanol, auxilia na propulsão do motor elétrico, cuja eficiência fica comprometida em longas distâncias e em veículos de médio e grande porte. O motor elétrico híbrido flex a etanol é uma alternativa eficaz para atender aos padrões atuais de consumo, já que há muito tempo se tem o motor a combustão interna a etanol eficiente, bem como auxiliar a falta de oferta de uma ampla rede de reabastecimento de baterias elétricas, possibilitando que o consumidor possa realizar suas atividades diárias sem a preocupação com a falta de disponibilidade de eletropostos em algumas cidades do território nacional.Palavras-chave: Motor. Elétrico. Etanol. Automóveis. Híbrido.AbstractThe electric motors concept has been inserted in the society since the mid-nineteenth century. The oil advent and the internal gasoline-fueled engine increased efficiency meant that the electric cars development had remained dormant for several decades. This concept emerged after global awareness of the environmental pollution problems caused by oil-derived combustion engines, which led to the introduction of sustainable development policies to eliminate the vehicles circulation with internal combustion engines by European countries in the next years. Alternative energy sources, such as ethanol, help propel the electric motor, whose efficiency is compromised over long distances and in medium and large vehicles. The ethanol-flex hybrid electric motor is an effective alternative to meet current consumption standards, since the engine has long been the fuel-efficient domestic ethanol, as well as adi the lack of supply of a wide network of battery replenishment making it possible for the consumer to carry out his or her daily activities without worrying about the lack of electricity availability in some cities of the national territory.Keywords: Motor. Electric. Ethanol. Automobiles. Hybrid.
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Eckert, Nathan, and Zachary A. Riley. "Adaptability of the nociceptive withdrawal reflex." F1000Research 2 (July 16, 2013): 158. http://dx.doi.org/10.12688/f1000research.2-158.v1.

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The nociceptive withdrawal reflex is a protective mechanism to mediate interactions within a potentially dangerous environment. The reflex is formed by action-based sensory encoding during the early post-natal developmental period, and it is unknown if the protective motor function of the nociceptive withdrawal reflex in the human upper-limb is adaptable based on the configuration of the arm or if it can be modified by short-term practice of a similar or opposing motor action. In the present study, nociceptive withdrawal reflexes were evoked by a brief train of electrical stimuli applied to digit II, 1) in five different static arm positions and, 2) before and after motor practice that was opposite (EXT) or similar (FLEX) to the stereotyped withdrawal response, in 10 individuals. Withdrawal responses were quantified by the electromyography (EMG) reflex response in several upper limb muscles, and by the forces and moments recorded at the wrist. EMG onset latencies and response amplitudes were not significantly different across the arm positions or between the EXT and FLEX practice conditions, and the general direction of the withdrawal response was similar across arm positions. In addition, the force vectors were not different after practice in either the practice condition or between EXT and FLEX conditions. We conclude the withdrawal response is insensitive to changes in elbow or shoulder joint angles as well as remaining resistant to short-term adaptations from the practice of motor actions, resulting in a generalized limb withdrawal in each case. It is further hypothesized that the multisensory feedback is weighted differently in each arm position, but integrated to achieve a similar withdrawal response to safeguard against erroneous motor responses that could cause further harm. The results remain consistent with the concept that nociceptive withdrawal reflexes are shaped through long-term and not short-term action based sensory encoding.
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Eckert, Nathan, and Zachary A. Riley. "The nociceptive withdrawal reflex does not adapt to joint position change and short-term motor practice." F1000Research 2 (December 19, 2013): 158. http://dx.doi.org/10.12688/f1000research.2-158.v2.

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The nociceptive withdrawal reflex is a protective mechanism to mediate interactions within a potentially dangerous environment. The reflex is formed by action-based sensory encoding during the early post-natal developmental period, and it is unknown if the protective motor function of the nociceptive withdrawal reflex in the human upper-limb is adaptable based on the configuration of the arm or if it can be modified by short-term practice of a similar or opposing motor action. In the present study, nociceptive withdrawal reflexes were evoked by a brief train of electrical stimuli applied to digit II, 1) in five different static arm positions and, 2) before and after motor practice that was opposite (EXT) or similar (FLEX) to the stereotyped withdrawal response, in 10 individuals. Withdrawal responses were quantified by the electromyography (EMG) reflex response in several upper limb muscles, and by the forces and moments recorded at the wrist. EMG onset latencies and response amplitudes were not significantly different across the arm positions or between the EXT and FLEX practice conditions, and the general direction of the withdrawal response was similar across arm positions. In addition, the force vectors were not different after practice in either the practice condition or between EXT and FLEX conditions. We conclude the withdrawal response is insensitive to changes in elbow or shoulder joint angles as well as remaining resistant to short-term adaptations from the practice of motor actions, resulting in a generalized limb withdrawal in each case. It is further hypothesized that the multisensory feedback is weighted differently in each arm position, but integrated to achieve a similar withdrawal response to safeguard against erroneous motor responses that could cause further harm. The results remain consistent with the concept that nociceptive withdrawal reflexes are shaped through long-term and not short-term action based sensory encoding.
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Muharom, Syahri, and Tukadi Tukadi. "Wheelchair Robot Movements Using Flex Sensor Glove." Jurnal INFORM 3, no. 2 (2018): 84. http://dx.doi.org/10.25139/inform.v3i2.964.

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The wheelchair is one of the most commonly used tools for disability person perform activities. But many wheelchairs still use human power to move them, so this research tries to make a wheelchair robot with movement control using a flex sensor glove. In this system using two controllers where one controller is made as a master and the other as a slave, and use Bluetooth as a medium of communication between two controllers. Flex glove sensors are paired in the hands of the user or others as the master, and the controller is in a wheelchair as a slave. Sensor data in hand is sent using Bluetooth master and received by Bluetooth slave, then processed by slave controller and give a command to the motor driver to move the wheelchair. It is expected that the development of wheelchairs can facilitate people with physical disabilities in conducting activities.
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Eswara Kumar, A., K. Somanadha Sastry, K. Manideep, and M. Priyanka. "Dynamic Analysis of Flex Seal of Solid Rocket Motor Nozzle." Materials Today: Proceedings 4, no. 2 (2017): 1590–97. http://dx.doi.org/10.1016/j.matpr.2017.01.182.

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Fernando Iñiguez, Juan, Guillermo Gorky Reyes, Cristian Andrés Rivera, and Erik Saul Vera. "Estudio De Emisiones Contaminantes Producidas Por Un Motor Otto Con El Uso De Gasolina Y Un Combustible A Base De 95% De Gasolina Y 5% De Etanol." INNOVA Research Journal 2, no. 12 (2017): 11–18. http://dx.doi.org/10.33890/innova.v2.n12.2017.571.

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 El presente estudio compara las emisiones contaminantes producidas por un motor de combustión interna de 4 tiempos con el uso de dos combustibles, el primero es la gasolina común, el segundo es un combustible a base de 95% de gasolina común y 5% de etanol, denominado E5, las pruebas de dichos combustibles se los realizo en un vehículo Ford F150 con sistema de alimentación Flex-Fuel, las mediciones de emisiones contaminantes se las realizo a diferentes regímenes del motor, se observa una clara reducción de las emisiones contaminantes producidas por la combustión y que son expulsadas por el motor a través del tubo de escape al medio ambiente con el combustible E5, mediante un análisis de varianza se determinó que los dos tipos de combustibles pueden ser sustitutos y que no se necesitan modificaciones al motor para el uso del combustible E5.
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Signor, Diogo, and Francis Carlo Petterini. "O impacto do motor flex no mercado brasileiro de motocicletas e na liderança da Honda." Revista Brasileira de Inovação 16, no. 2 (2017): 351. http://dx.doi.org/10.20396/rbi.v16i2.8650115.

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Em 2009 a Honda incorporou o motor flex em parte de suas motocicletas, o que ocorreu sob um contexto peculiar, já que a empresa poderia ter sua liderança ameaçada por novos concorrentes e o mercado estava retraído. O artigo contextualiza e analisa o impacto da inovação, estimando por controle sintético que as vendas contrafactuais da Honda seriam até 27% menores no quadriênio 2009-2012. Associado ao fato que a Honda ganhou cinco pontos percentuais em parcela de mercado, isso aponta a relevância da inovação para manter sua liderança.
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Dissertations / Theses on the topic "Motor Flex"

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Silva, Marcos Henrique Carvalho. "Modelagem de motores a combustão interna com tecnologia FLEX." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/3/3142/tde-17072018-084552/.

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A modelagem de motores a combustão interna deve grande parte de sua importância ao uso de unidades de controle eletrônicas que buscam gerenciar as funções do motor. De forma a fornecer melhor suporte para o projetista de controle, a modelagem oferece informações que servem de planta, sobre a qual estratégias de controle serão desenvolvidas. Nesta dissertação, procurou-se estudar e modelar cinco fenômenos: a admissão de ar e de combustível, a produção de energia efetiva através da combustão, a evolução térmica do motor e o comportamento dos gases no sistema de exaustão. Investigou-se também, em todos estes fenômenos, a influência do uso de composição variada gasolina/etanol. Na admissão de ar, buscou-se estudar como a abertura da válvula borboleta e a velocidade do motor influenciam no fluxo de ar admitido, ponderando esta grandeza através de um fator de correção denominado eficiência volumétrica. Na admissão de combustível, no caso modelada para motores com injeção indireta na porta, procurou-se explanar quantitativamente sobre os diversos aspectos que influenciam a evaporação do combustível. Na geração de energia útil, priorizou-se a análise de como as características do motor e da combustão afetam a produção de torque. Na evolução térmica do motor, examinaram-se os principais fluxos energéticos do motor e os aspectos que os influenciam. Ademais, foram executadas as validações dos modelos levantados para o motor EA 111 VHT 1.6l. Os resultados, com seus respectivos erros, podem ser encontrados neste trabalho.<br>The internal combustion engine modeling owes big part of its importance to the use of electronic control units that aim to manage the engine functions. To provide better support to the control designer, the modeling offers information that can compose the plant, on which control strategies will be developed. In this master thesis, it was sought to study and to model five phenomena: the air intake and the fuel admission, the effective energy production from the combustion, the engine thermic evolution and the gas behavior in the exhaust system. It was also considered how the influence of the gasoline/ethanol varied composition affects all these phenomena. In the air intake, it was studied how the butterfly valve opening and the engine speed influence the intake air flow, pondering this variable through a correction factor named volumetric efficiency. In the fuel admission, in the case of this study modelled for port-fuel injection engines, it was attempted to explain quantitatively the many aspects that influence the fuel evaporation. In the mechanical energy generation, it was prioritized the analysis about how the engine and combustion characteristics affect the torque production. In the engine thermic evolution, it was examined the major energy flows and the aspects that influence them. Also, the validations of the models raised for the EA 111 VHT 1.6l engine were executed. The results, with its respective errors, can be found in this work.
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Laranja, Gil Colona. "Desempenho de um ve?culo flex em bancada dinamom?trica de chassi." Universidade Federal do Rio Grande do Norte, 2010. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15645.

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Made available in DSpace on 2014-12-17T14:58:06Z (GMT). No. of bitstreams: 1 GilCL_DISSERT.pdf: 1771464 bytes, checksum: 92ddc93639f74d5c2bbc96617815f7ed (MD5) Previous issue date: 2010-12-18<br>Flex-fuel vehicles are equipped with Otto Cycle internal combustion engines and have the capability of functioning with more than one type of fuel, mixed at the same tank and burned in the combustion chamber simultaneously. This sort of motorization is a world pattern due to the scarcity of petroleum, the trade of several types of fuels, technology advances and the restriction imposed to gas emissions to the atmosphere. In Brazil, the Flexfuel vehicles are a reality, specially the ones using fuel with 20 to 25% anhydrous alcohol mixed with gasoline and those that use natural gas or original liquid fuel (gasoline or hydrated ethanol). The Brazilian model Fiat Siena, the object of this present scientific investigation, is equipped with a unique electronic central capable of managing the liquid or gaseous fuels. The purpose of this research was to perform a comparative analysis in terms of performance (in terms of both potency and consumption) of a tetra-fuel vehicle - using a chassis dynamometer, operating with different fuels: common gasoline, premium gasoline, Podium gasoline, ethanol or natural gas. It became necessary to develop a bench of tests and trials procedures, as well as to know the functioning of the electronic management of the vehicle under analysis. The experiments were performed at the automotive laboratory in CTGAS-ER (Center of Gas Technologies and Renewable energies) at the light of Brazilian standard ABNT, NBR 7024: Light on-road vehicles - measurement of fuel consumption. The essay results on specific fuel consumption using common gasoline, premium gasoline and Podium gasoline have shown similar results, both for urban and road driving cycles<br>Os ve?culos flex s?o equipados com um motor de combust?o interna do ciclo Otto e t?m como caracter?stica a capacidade de funcionar com mais de um tipo de combust?vel, misturados no mesmo tanque e queimados na c?mara de combust?o simultaneamente. Este tipo de motoriza??o ? uma tend?ncia mundial devido ? escassez do petr?leo, a comercializa??o de v?rios tipos de combust?veis, aos avan?os tecnol?gicos dos sistemas de gerenciamento eletr?nico de combust?vel e ?s restri??es as emiss?es de gases poluentes na atmosfera. No Brasil, os ve?culos flex s?o uma realidade, com destaque para os ve?culos alimentados com 20 a 25% do ?lcool anidro misturado com gasolina e os que utilizam g?s natural ou o combust?vel l?quido original (gasolina ou etanol hidratado). O FIAT SIENA TETRAFUEL, objeto da presente investiga??o, ? equipado com uma ?nica central eletr?nica capaz de gerenciar os combust?veis l?quidos ou gasoso. A pesquisa em tela teve como prop?sito a an?lise comparativa de desempenho (pot?ncia e consumo) de um ve?culo tetracombust?vel simulando ciclos de condu??o urbano e de estrada em um dinam?metro de chassi, operando com os combust?veis: gasolina comum (tipo C), gasolina aditivada (tipo C), gasolina Podium (Premium), etanol (AEHC) ou g?s natural (GNV). Foi necess?rio desenvolver bancada de testes e procedimentos de ensaios, como tamb?m conhecer o funcionamento do gerenciamento eletr?nico do ve?culo em quest?o. Os ensaios foram realizados no Laborat?rio do Centro de Tecnologias do G?s e Energias Renov?veis de acordo com a norma ABNT NBR 7024 - Ve?culos rodovi?rios leves Medi??o do consumo de combust?vel. Os resultados dos ensaios de consumo espec?fico com as gasolinas comum, aditivada e Podium resultaram em valores pr?ximos, tanto no ciclo de condu??o urbano como tamb?m no ciclo de condu??o de estrada
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Filho, Dinecio dos Santos. "Alterações metalúrgicas e topográficas do cilindro de bloco de motor de combustão interna flex-fuel." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-09022015-163026/.

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O presente estudo descreve as alterações metalúrgicas e topográficas do cilindro de blocos de motor de combustão interna fabricados em ferro fundido cinzento, após a realização de testes de durabilidade em dinamômetro. O motor testado tem tecnologia Flex-Fuel, e pode ser operado com qualquer proporção de mistura gasolina comum/etanol. Um motor foi testado com combustível etanol e o outro com gasolina comum, buscando-se assim representar duas condições extremas de trabalho em termos de combustível. A pesquisa constituiu-se da revisão bibliográfica e da parte prática que envolveu: a realização de testes de durabilidade de motor em dinamômetro; a caracterização metalúrgica e topográfica do cilindro após teste com ambos os combustíveis, utilizando técnicas de microscopia eletrônica de varredura, metalografia por microscopia óptica, perfilometria e quantificação de parâmetros de rugosidade, entre outros; a análise crítica, discussão dos resultados e apresentação da conclusão.<br>The present study approaches the metallurgical and topographical alterations on the cylinder of an internal combustion engine block made of gray cast iron, after durability dynamometer tests. The tested engine has flexible fuel technology (Flex-Fuel), and is capable to work with both gasoline/ethanol fuels, in any mixture proportion. One engine has been tested with ethanol and another one tested with gasoline, and so representing two extreme conditions on which the engine may work in terms of fuel. The research has been developed basically through the conceptual approach by the bibliographic review and the experimental steps that involved: general engine durability test at dynamometer bench; metallurgical and topographic characterization analysis at laboratory, after the test with both fuels, applying Scanning Electronic Microscopy SEM, optical microscopy metallography, profilometer and roughness parameters quantification, and so forth; critical analysis on the results, discussion and final conclusion.
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Cunha, Rodrigo Potenza da. "Caracterização mecânica e metalográfica de uma liga de alumínio empregada para cabeçote de motor flex." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-08032013-115751/.

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Hoje em dia na indústria automobilística há uma grande necessidade em diminuição de custos e de peso no carro e isso pode ser o diferencial na concorrência da indústria automobilística. A substituição de materiais pesados por materiais mais leves é uma tendência mundial na indústria automobilística, além disso, existe também a necessidade de diminuir as etapas de processo. O tratamento térmico é uma etapa que tem um gasto muito grande de energia consequentemente é uma etapa muito cara do processo e ligas não tratáveis termicamente pode acarretar em economia de processo. O cabeçote de motor é uma parte importante do carro e o uso é em altas temperaturas em tempos elevados, esta peça é uma peça fundida sobre pressão para motores movido a álcool ou/e gasolina e geralmente feita de liga de alumínio com tratamento térmico, este trabalho estudou uma liga de alumínio com alto teor de cobre, para isso foi necessário a caracterização da liga com envelhecimento a temperaturas de trabalho do motor e verificou-se o que acontece com as propriedades mecânicas da peça.<br>Nowadays, there is a huge need in reduce the costs and the weight of cars, which could be a differential in the competition of the automotive industry. The substitution of heavy materials for lighter materials is a world tendency in the automotive industry, besides that, there is a need in reduce the stages of the process. The thermal treatment is a stage that has a high cost of energy, consequently, it is the more expensive stage of the process and alloys, that cannot be treated thermally, can result in economy of process. The cylinder head is an important part of the car and it is used in high temperatures for a long period. This piece is fused on pressure for engines that use ethanol or/and gasoline, generally, it is made by aluminum alloys with thermal treatment, this project was made by the study of an aluminum alloy with high content of copper, to make it happen, was necessary the characterization of the alloy with aging to temperatures of engine\'s work, it was found what happens to the mechanics properties of the piece.
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Chiapinotto, Lino. "Análise da combustão e das emissões de um motor flex usando misturas heterogêneas de combustíveis." Universidade Estadual Paulista (UNESP), 2017. http://hdl.handle.net/11449/152162.

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No. of bitstreams: 1 chiapinotto_l_me_guara.pdf: 2025683 bytes, checksum: 06211c8bab58758df3a08535a4aa3f80 (MD5) Previous issue date: 2017-09-21<br>Nesta pesquisa investiga-se a viabilidade do uso de misturas heterogêneas de combustíveis compostas por etanol e gás natural veicular (GNV) em motor flex fuel (Flex). Os motores Flex, no Brasil, são abastecidos com gasolina E27 (com até 27% de etanol anidro e 73% de gasolina), etanol, GNV ou qualquer mistura de etanol e gasolina. Ao funcionarem com o GNV apresentam vantagens pela menor emissão de dióxido de carbono (CO2), monóxido de carbono (CO) e óxidos de nitrogênio (NOX), mas são desvantajosos com relação às emissões de hidrocarbonetos (HC) em baixas rotações quando comparados ao utilizarem gasolina ou etanol, além da perda de potência variando de 10 a 20%. Esta pesquisa objetiva encontrar uma mistura de etanol-GNV, cuja combustão possa reduzir, as emissões de CO, HC e NOx do motor Flex em relação ao modo GNV. Os testes foram conduzidos num motor Flex de 2000 cilindradas, com duas válvulas por cilindro. No motor foi instalado um sistema de gerenciamento de injeção eletrônica de GNV funcionando concomitantemente com a injeção de combustível líquido. Fez-se inicialmente a medição da vazão de etanol (E100), do GNV (E0) e de diferentes misturas de etanol-GNV (E20, E40, E60, E80). Para a avaliação dos parâmetros das emissões de CO2, CO, O2, HC e NOx, das eficiências (térmica, volumétrica e mecânica), consumo específico de combustível e custo operacional, calibrou-se primeiramente o motor para o uso de E0 e de E100. Os testes foram realizados em modo estacionário e dinâmico, cujas emissões foram medidas através do analisador de gases. No modo estacionário mediram-se as emissões de gases de exaustão em velocidade angular de 1000 e 2500 RPM (rotações por minuto); no modo dinâmico mediram-se além das emissões, a potência e o consumo de combustível com o motor submetido a 25% de carga a 2000, 2500, 3000 RPM e à carga total num dinamômetro ativo para até 290 kW. Os melhores resultados obtiveram-se para a mistura E20. Comparando-se com E0, a mistura E20 resultou uma média de 55,33%, 31%, 29,86% e 57,41% na diminuição das emissões de CO, O2, HC e de NOx, respectivamente, com um aumento médio das emissões de CO2 em 5,81%; foi observado também perda de 2,45% de potência líquida, além do aumento de 2,35%, 1,25%, 1,41%, 16,94% e 18,85% para eficiência térmica, eficiência volumétrica, eficiência mecânica, consumo específico de combustível e do custo operacional, respectivamente<br>This research has investigated the feasibility of using heterogeneous fuel blends composed of ethanol and compressed natural gas (CNG) in flex-fuel engines. In Brazil, such vehicles are fueled by E27 gasoline (up to 27% anhydrous ethanol and 73% gasoline), ethanol, CNG or any ethanol and gasoline blend. When running on CNG, they offer advantages due to lower carbon dioxide (CO2), carbon monoxide (CO) and nitrogen oxide (NOX) emissions, although they are disadvantageous with respect to hydrocarbon emissions (HC) at low revolutions, especially if compared to being run on gasoline or ethanol, in addition to power loss ranging from 10 to 20%. Thus, it is aimed to find an ethanol-CNG blend whose combustion can reduce CO, HC and NOx emissions from flex-fuel engines in comparison with the CNG mode. Tests have been conducted on a 2000cc flex-fuel engine with two valves per cylinder. It was installed an electronic CNG injection system operating concomitantly with the liquid fuel injection system. Flows of ethanol (E100), CNG (E0) and different ethanol-CNG blends (E20, E40, E60, E80) were initially measured. In order to evaluate levels of CO2, CO, O2, HC and NOx emissions, efficiency (thermal, volumetric and mechanical), specific fuel consumption and operating cost, the engine was initially calibrated to run on E0 and E100. The emissions tests were performed in stationary and dynamic mode. In stationary mode, exhaust emissions were measured at 1000 and 2500 RPM (revolutions per minute); in dynamic mode, power and fuel consumption were measured while the engine was subjected to 25% load at 2000, 2500, and 3000 RPM, in addition to repeating exhaust gas and power tests at full load with an active dynamometer at up to 290 kW. Optimal results were obtained for blend E20. If compared to E0, E20 resulted in an average of 55.33%, 31%, 29.86% and 57.41% at reducing CO, O2, HC and NOX emissions, respectively, with increased CO2 emissions. It were also observed of 2.45% of gross power loss, besides an increase of 2.35%, 1.25%, 1.41%, 16.94% and 18.85% in thermal efficiency, volumetric efficiency, mechanical efficiency, specific fuel consumption and operating cost, respectively
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Hayashida, Paulo Alexandre Pizara. "Desenvolvimento de uma estratégia de controle de detonação para otimização do torque em um motor de combustão interna flex." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/3/3142/tde-24092018-074932/.

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O presente trabalho aborda o gerenciamento eletrônico de motores de combustão interna flex, com foco no desenvolvimento de uma estratégia de controle do avanço de ignição em função da ocorrência de combustão anormal conhecida como detonação, para se maximizar o torque de saída do motor. Primeiramente, é desenvolvido um método para a medição da composição de combustível e correção dos parâmetros de tempo de injeção e avanço de ignição, através de um sensor de composição de combustível. Tais parâmetros são definidos através de mapas que trabalham como um sistema de malha aberta. Em seguida, é desenvolvido um método para a leitura e detecção de detonação, em que são estudadas as particularidades do fenômeno para diferentes composições de combustível e a sua relação com a variação da temperatura do gás de escape e torque de saída do motor. Através do método de detecção e do estudo do fenômeno, é desenvolvido uma estratégia para controle do avanço de ignição em função da ocorrência da detonação. Esta abordagem permite ao sistema aumentar o avanço quando não há ocorrência de detonação, mas este avanço adicional é cancelado quando ocorre detonação. O gerenciamento do motor é realizado através de uma ECU de desenvolvimento modelo Flex-ECU, as estratégias de gerenciamento são desenvolvidos através da plataforma ASCET e a aquisição de dados e calibração de parâmetros são executados em uma ferramenta de medição e calibração. Os benefícios que o controle do avanço de ignição traz ao torque do motor são analisados e discutidos em função da rotação e da composição de combustível utilizado.<br>The present investigation explores the electronic management of internal combustion engines flex fuel, in which the focus is the development of a strategy for the spark advance angle as function of the abnormal combustion occurrence known ad Knock, in order to maximize the output torque. First, a method is developed for measuring the fuel composition and correction of the injection time and spark advance angle parameters through a fuel composition sensor. This parameter is defined through maps that work as an open loop system. Then, a method for detection of knock is developed, the peculiarities of the phenomenon are studied for different fuel compositions and the relationship of the phenomenon with the variation of the exhaust gas temperature and the engine output torque. Through the method of detection and the study of the phenomenon, an algorithm is developed to control the spark advance angle due to the knock occurrence, in which the approach allows the system to increase the angle when there is no occurrence of knock, but this additional angle is reduced when knock is detected. Engine management is performed through a development ECU model Flex-ECU, management algorithms are developed through the ASCET platform and data acquisition and calibration of and parameters is performed through a measurement and calibration platform. The result that the spark advance angle control brings to the engine torque output is analyzed and discussed depending on the rotation and the fuel composition used.
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Costa, Fabiano Tadeu Mathias. "Estimação da relação ar-combustível e do tipo de combustível utilizando o sinal de pressão no cilindro em um motor ciclo Otto alimentado com misturas de etanol e gasolina." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/18/18149/tde-23082015-131423/.

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A pesquisa realizada tratou do estudo de modelos de estimação da relação ar-combustível e de identificação do tipo de combustível usando o sinal da pressão no cilindro em um motor quatro tempos automotivo, alimentado com gasolina brasileira tipo C, etanol e misturas destes combustíveis. Foi montada uma bancada dinamométrica para realização de testes em um motor originalmente projetado para operar com etanol e que possui relação de compressão de 13,44:1. Durante os testes do motor foram coletados dados referentes às variáveis de desempenho e emissões de gases de exaustão. Os dados coletados em plena carga foram analisados utilizando parâmetros estatísticos e confrontados com os resultados esperados segundo a literatura. As variáveis independentes disponibilizadas nos testes do motor foram utilizadas em conjunto com a aplicação do método dos momentos e da razão de pressões no sinal da pressão no cilindro para o desenvolvimento de novos modelos de estimação da relação ar-combustível e de identificação do tipo de combustível. Os modelos obtidos na presente pesquisa mostraram-se capazes de estimar a relação ar-combustível, sendo sensíveis à variação da composição do combustível nesta estimativa, e de identificar o tipo de combustível utilizado no motor.<br>This research addressed the study of models for estimating the air-fuel ratio and identifying the type of fuel by in-cylinder pressure signal in a four stroke automotive engine fueled with Brazilian gasoline C type, ethanol, and blends of these fuels. A dynamometer was assembled for tests in an engine originally designed to operate with ethanol and with a 13.44:1 compression ratio. During the engine tests, data were collected related to the performance and exhaustion gas emission variables. Data collected at full load were analyzed using statistical parameters and compared with the expected results according to the literature. The independent variables provided by the engine tests were used together with application of the method of moments and the pressure ratio for in-cylinder pressure in order to develop new models for estimating the air-fuel ratio and to identify the fuel type. The models obtained in this research proved to be capable of estimating the air-fuel ratio, being sensitive to the variation in the type of fuel used in such estimations, and of identifying the type of fuel used in the engine.
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Hudson, Christopher Allen. "Single-Phase, Single-Switch, Sensorless Switched Reluctance Motor Drive Utilizing a Minimal Artificial Neural Net." Thesis, Virginia Tech, 2005. http://hdl.handle.net/10919/34735.

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Artificial Neural Networks (ANNs) have proved to be useful in approximating non- linear systems in many applications including motion control. ANNs advocated in switched reluctance motor (SRM) control typically have a large number of neurons and several layers which impedes their real time implementation in embedded sys- tems. Real time estimation at high speeds using these ANNs is diffcult due to the high number of operations required to process the ANN controller. An insuffcient availability of time between two sampling intervals limits the available computation time for both processing the neural net and the other functions required for the motor drive. One ideal application of ANNs in SRM control is rotor position estimation. Due to reliability issues, elimination of the rotor position sensors is absolutely required for high volume, high speed and low cost applications of SRM's. ANNs provide a means by which drive designers can implement position sensorless drive technology that is both robust and easily implemented. It is demonstrated that a new and novel ANN configuration can be implemented for accurate rotor position estimation in a sensorless SRM drive. Consisting of just 4 neurons, the neural estimator is the smallest of its kind for SRM rotor position estimation. The breakthrough that provided the reduction was the addition of a non- linear input. Typical input spaces for SRM position neural estimators consist of both current,and fux-linkage. The neural network was trained on-line using these inputs and a third, non-linear input provided by a preprocessed product of the two typical inputs.<br>Master of Science
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Wallace, Mark. "The new flux switching motor : a DC motor without brushes." Thesis, University of Warwick, 2000. http://wrap.warwick.ac.uk/4496/.

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This thesis is principally concerned with the theoretical modelling, design, manufacture, performance testing, and development of a new type of low-cost electronically-commutated doubly-salient wound-field brushless DC-motor, named the flux-switching motor. The drive-system that was designed, and developed, was specifically intended to be used in a low-power application (2.5 horsepower, less than 2 kW output-power), according to a given specification Extensive testing using four prototype motors has been carried out in attempting to satisfy the specification. From this testing empirical modelling techniques have been demonstrated to be of use in the design of such motors. The motor is showing excellent promise for the future, when it should become a realistic alternative to currently available motors on the market.
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Yilmaz, Kurtulus. "Comparison Of Axial Flux And Radial Flux Brushless Dc Motor Topologies For Control Moment Gyroscope Wheel Applications." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610565/index.pdf.

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In this thesis axial flux and radial flux brushless dc motors will be studied as a drive motor for the control of moment gyroscope wheel. Design equations for axial flux and radial flux brushless dc motor topologies will be reviewed. Based on these equations radial and axial flux motors with different number of poles will be designed that meet control moment gyroscope wheel application requirements. The results will be evaluated in terms of efficiency, torque/mass and torque/volume, and suitability for the control moment gyroscope application.
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Books on the topic "Motor Flex"

1

Novinschi, Anca. Simulation and implementation of rotor flux control for an induction motor. De Montfort University, 1998.

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Gieras, Jacek F. Axial flux permanent magnet brushless machines. 2nd ed. Springer, 2008.

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Gieras, Jacek F. Axial flux permanent magnet brushless machines. Kluwer Academic, 2003.

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Salo, Jussi. Design and analysis of a transversal-flux switched-reluctance-linear-machine pole-pair. Lappeenranta University of Technology, 1999.

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Colberg, Francis R. Damage analysis of internal faults in flux concentrating permanent magnet motors. Available from National Technical Information Service, 1994.

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Niemelä, Markku. Position sensorless electrically excited synchronous motor drive for industrial use based on direct flux linkage and torque control. Lappeenranta University of Technology, 1999.

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The future of renewable fuels and flex-fuel vehicles: Hearing before the Subcommittee on Department Operations, Oversight, Dairy, Nutrition, and Forestry of the Committee on Agriculture, House of Representatives, One Hundred Ninth Congress, second session, May 22, 2006, Rochester, MI. U.S. G.P.O., 2006.

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Vaez-Zadeh, Sadegh. Vector Control. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198742968.003.0003.

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The chapter begins with a description of the scalar control of PMS motors. The fundamentals of PMS motor vector control (VC) are then presented with an eye on the analogy with DC motor operating principles. The VC of surface-mounted permanent magnet pole motors and interior permanent magnet (IPM) motors are presented in various reference frames. Current and voltage operating limits are incorporated into the control systems. Flux control modes of operation of PMS motors together with the corresponding control means in different reference frames are also presented in detail, as a particular feature of this book. These include maximum torque per ampere (MTPA) control, maximum torque per voltage control, and unity power factor control. Finally, loss minimization control by offline and online strategies is elaborated after presenting the method of motors loss reduction and the PMS motor loss modeling.
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Warren, Campbell, Dean Garvin, and United States. National Aeronautics and Space Administration., eds. Advanced electric motor technology flux mapping. Research University of Alabama in Huntsville, 1993.

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Advanced electric motor technology flux mapping. Research University of Alabama in Huntsville, 1993.

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Book chapters on the topic "Motor Flex"

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Lin, Jianing (Joanna). "Axial Flux Switched Reluctance Machines." In Switched Reluctance Motor Drives. CRC Press, 2019. http://dx.doi.org/10.1201/9780203729991-15.

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Wang, Gaolin, Nannan Zhao, Guoqiang Zhang, and Dianguo Xu. "Flux-Weakening Control Method." In Reduced DC-link Capacitance AC Motor Drives. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-8566-1_6.

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Lindqvist, A., and I. Välimäki. "Thermal and Postural Influences on Cutaneous Microvascular Blood Cell Flux in Young Men." In Cardiorespiratory and Motor Coordination. Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-75507-1_31.

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Dai, Peng, Fengchao Fu, Xiao Fu, Weilin Zong, and Erlei Zhou. "Electrically Excited Synchronous Motor Reduced-Order Flux Observer." In Lecture Notes in Electrical Engineering. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-21747-0_114.

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Van Dessel, M., R. Belmans, R. Hanitsch, and E. A. Hemead. "Torque Calculation of a Small, Axial Flux Permanent Magnet Motor." In Electric and Magnetic Fields. Springer US, 1995. http://dx.doi.org/10.1007/978-1-4615-1961-4_8.

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Boldea, Ion, and Lucian Tutelea. "Switched Flux–Permanent Magnet Synchronous Motor Analysis, Design, and Control." In Reluctance Electric Machines. CRC Press, 2018. http://dx.doi.org/10.1201/9780429458316-9.

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Karan, Vijay Kumar, P. R. Thakura, and A. N. Thakur. "Adaptive Compensation Algorithm for Flux Estimation of PM BLDC Motor Drives." In Lecture Notes in Electrical Engineering. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8234-4_64.

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Boldea, Ion, and Lucian Tutelea. "Transverse Flux Permanent Magnet Synchronous Motor Analysis, Optimal Design, and Control." In Reluctance Electric Machines. CRC Press, 2018. http://dx.doi.org/10.1201/9780429458316-12.

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Chaudhari, Jagdish G., and Sanjay B. Bodkhe. "Performance Improvement of Direct Torque and Flux Controlled AC Motor Drive." In Smart Innovation, Systems and Technologies. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0077-0_36.

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Meng, DongYi, Lijun Diao, Shaobo Yin, Yujie Chang, and Hui Wang. "Improved Voltage Model Based Flux Observer Design for Traction Induction Motor." In Lecture Notes in Electrical Engineering. Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-7986-3_41.

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Conference papers on the topic "Motor Flex"

1

Maggio, André Vinicius O., Marco Isola Naufal, Marcos Henrique C. Silva, Armando Antônio M. Laganá, João Francisco J. Filho, and Angelo Maggio Neto. "SIMULAÇÃO DE UM MOTOR DE COMBUSTÃO FLEX." In XXVI Simpósio Internacional de Engenharia Automotiva. Editora Blucher, 2018. http://dx.doi.org/10.5151/simea2018-pap72.

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Maggio, André Vinicius Oliveira, Marco Isola Naufal, Marcos Henrique Carvalho, Armando Antonio Maria Laganá, Joao Francisco Justo, and Angelo Maggio Neto. "Modelagem do fenômeno da detonação aplicada ao motor de combustão flex." In XXVII Simpósio Internacional de Engenharia Automotiva. Editora Blucher, 2019. http://dx.doi.org/10.5151/simea2019-pap118.

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NOVAES, Lucas Motta De, Paulo Alexandre Pizzará HAYASHIDA, Armando Antônio Maria LAGANÁ, João Francisco JUSTO FILHO, and Pedro de Castro ROSSETTI. "CONTROLE DA PROPORÇÃO AR/ COMBUSTÍVEL EM UM MOTOR COM TECNOLOGIA FLEX." In XXV Simpósio Internacional de Engenharia Automotiva. Editora Blucher, 2017. http://dx.doi.org/10.5151/engpro-simea2017-37.

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Gruber, Wolfgang, Walter Bauer, Daniel Wetsch, Bianca Klammer, and Nobuyuki Kurita. "Implementation of a Bearingless Axial-Force/Torque Motor Fan with Flex-PCB Windings." In 2019 IEEE International Electric Machines & Drives Conference (IEMDC). IEEE, 2019. http://dx.doi.org/10.1109/iemdc.2019.8785266.

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Maggio Neto, Angelo, André Vinícius de O. Maggio, Armando Antônio Maria Laganá, Marcos Henrique C. Silva, Marco Isola Naufal, and Marco Aurélio Fróes. "ANÁLISE DO DESEMPENHO DE UM MOTOR FLEX-FUEL PARA DIFERENTES RELAÇÕES DE COMPRESSÃO." In XXVI Simpósio Internacional de Engenharia Automotiva. Editora Blucher, 2018. http://dx.doi.org/10.5151/simea2018-pap73.

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Hayashida, Paulo Alexandre Pizará, Lucas Motta de Novaes, João Francisco Justo, Armando Antonio Maria Laganá, Kleber Nogueira Hodel, and Marco Isola Naufal. "ESTUDO E DESENVOLVIMENTO DO CONTROLE DO AVANÇO DE IGNIÇÃO EM UM MOTOR FLEX." In XXVI Simpósio Internacional de Engenharia Automotiva. Editora Blucher, 2018. http://dx.doi.org/10.5151/simea2018-pap84.

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SILVA, Marcos Henrique C., and Armando Antônio M. LAGANÁ. "MODELAGEM DOS PERCURSOS DA MISTURA AR/COMBUSTÍVEL PARA UM MOTOR COM TECNOLOGIA FLEX." In XXV Simpósio Internacional de Engenharia Automotiva. Editora Blucher, 2017. http://dx.doi.org/10.5151/engpro-simea2017-26.

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Kurita, Nobuyuki, Ryo Inomata, Wolfgang Gruber, and Takashi Okayasu. "Examination of flex PCB configuration for a winding of a magnetic levitation motor." In 2020 23rd International Conference on Electrical Machines and Systems (ICEMS). IEEE, 2020. http://dx.doi.org/10.23919/icems50442.2020.9291057.

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Kurita, Nobuyuki, Walter Bauer, Gerald Jungmayr, Wolfgang Gruber, and Wolfgang Amrhein. "Analysis and Design of a Bearingless Axial-Force/Torque Motor with Flex-PCB Windings." In 2018 International Power Electronics Conference (IPEC-Niigata 2018-ECCE Asia). IEEE, 2018. http://dx.doi.org/10.23919/ipec.2018.8507480.

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Neves, Guilherme, Maurilio de Bortoli Cassiani, Frederico Weissinger, Vincent Bigliardi, and Eugenio Coelho. "Soluções para Preservar a Competitividade do Motor PFI Flex Fuel para o Proconve L8." In XXVIII SIMPÓSIO INTERNACIONAL DE ENGENHARIA AUTOMOTIVA. Editora Blucher, 2021. http://dx.doi.org/10.5151/simea2021-pap85.

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Reports on the topic "Motor Flex"

1

Otaduy, P. J. Real Time Flux Control in PM Motors. Office of Scientific and Technical Information (OSTI), 2005. http://dx.doi.org/10.2172/885965.

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