Tesis sobre el tema "48V hybrid"
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Bauer, Leo P. "Distance-Based Optimization of 48V Mild-Hybrid Electric Vehicle". The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1522945979952733.
Texto completoGallo, Gaetano. "Impact of 48V E/E systems in Hybrid Racing Cars". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
Buscar texto completoLIU, YUXING. "Distributed Model Predictive Control with Application to 48V Diesel Mild Hybrid Powertrains". The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1556710574872984.
Texto completoGupta, Shobhit. "Look-Ahead Optimization of a Connected and Automated 48V Mild-Hybrid Electric Vehicle". The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1554478434629481.
Texto completoHeuer, Georg. "Development of an operation strategy for electrified auxiliaries in the power train of conventional vehicles". Universitätsverlag der Technischen Universität Chemnitz, 2017. https://monarch.qucosa.de/id/qucosa%3A32081.
Texto completoIn der heutigen Zeit mit den steigenden Ansprüchen zur Reduzierung des Kraftstoffverbrauchs sind viele verschiedene Ansätze und Technologien in der Entwicklung, wie zum Beispiel Hybridisierung, Zylinderreduktion mit der gleichen Leistungsausbeute wie zuvor oder auch vom Verbrennungsmotor unabhängigen Komponenten und Nebenaggregaten. Innerhalb dieser Arbeit wurde einer dieser Ansätze näher erläutert: elektrifizierte Nebenaggregate inklusive einer Betriebsstrategie. Durch den Austausch der konventionellen Nebenaggregate mit den elektrifizierten Nebenaggregaten steigt der Bedarf an mehr elektrischer Leistung. Durch die Limitierungen im 12V Bordnetz, ist der 48V Ansatz der nächste logische Schritt hinsichtlich des Kosten/Nutzen-Verhältnis und der Ressourcenverfügbarkeit für die Nutzung der elektrifizierten Komponenten. Das 48V Bordnetz benötigt neue bzw. modifizierte Komponenten inclusive einer neuen Bordnetztopologie. Fuzzy-Logik wurde zur Regelung der Nebenaggregate ausgewählt. Grund hierfür waren: Anzahl an Eingangsvariablen, Flexibilität in der Übertragung auf andere Fahrzeuge und dem robusten Verhalten in der Anwendung. Die Ergebnisse zeigten ein signifikantes Einsparpotential durch die Verwendung der entwickelten Betriebsstrategie für die ausgewählte Bordnetztopologie. Die Einsparung war in allen diskutierten Zyklen deutlich zu sehen. In dieser Arbeit wurde ein neuer Ansatz zur Verbrauchsreduktion gezeigt inklusive elektrifizierter Nebenaggregate und der benötigten Betriebsstrategie, um diese im Fahrzeug in verschiedenen Zyklen zu steuern. Die benötigten Modelle wurden entwickelt, wie zum Beispiel die Nebenaggregate, der Regler und den Bordnetzkomponenten.
ZANELLI, ALESSANDRO. "Development of a Comprehensive 0-1D Powertrain and Vehicle Model for the Analysis of an Innovative 48 V Mild-Hybrid Diesel Passenger Car". Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2842511.
Texto completoCOSSALE, MARCO. "Multi-phase Starter-Generator for 48 V Mild-Hybrid Powertrains". Doctoral thesis, Politecnico di Torino, 2017. http://hdl.handle.net/11583/2667599.
Texto completoSu, Kemin. "Performance of Texas bluegrass hybrids in the transition zone". Diss., Manhattan, Kan. : Kansas State University, 2007. http://hdl.handle.net/2097/483.
Texto completoOrtigosa, Allison Dawn. "Resolution of the pair-wise allosteric interactions found in phosphofructokinase from Bacillus stearothermophilus". Texas A&M University, 2003. http://hdl.handle.net/1969/484.
Texto completoAl-Samarrai, Ihsan. "Hybrid cooling/lubricating strategies for machining Ti-6Al-4V in CNC end milling". Thesis, University of Bath, 2018. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.767587.
Texto completoBorba, Natascha Zocoller. "Friction riveting of TI-6AL-4V and pultruded glass fiber reinforced thermoset polyester hybrid joints". Universidade Federal de São Carlos, 2015. https://repositorio.ufscar.br/handle/ufscar/7724.
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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Friction Riveting is an innovative spot joining technology for metal-polymer hybrid structures. This MSc thesis provided for the first time in the literature, a fundamental understanding on the Friction Riveting process for metal-thermoset composites joints. Joints of Ti-6Al-4V rivet and pultruded glass fiber reinforced thermoset polyester part were produced under three joining conditions with different heat input. Thorough analytical techniques were used to understand the physics of the process and the effect of the energy input on the final microstructure of the joined parts, the physico-chemical changes in the composite and the local and global mechanical properties of the joints. The process temperature reached values up to 761 ± 2°C indicating intrinsic degradation of the composite, formation of a softened/molten glass interlayer between the rivet and the composite and complex metallurgical transformations in the metallic rivet. Through monitoring of the process temperature and torque, an unstable friction regime was observed for FricRiveting of pultruded thermoset composites leading to distinguished extents of composite degradation. The microstructure of the Ti-6Al-4V alloy changed across the length of the rivet, from the equiaxed morphology to acicular structures in the rivet tip, where plastic deformation occurred. Three microstructural zones were proposed for each joint part including two thermo-mechanically affected zones and a heat affected zone. Microhardness mapping was performed in the metallic rivet evidencing an increase from the center to the tip of the rivet, with a hardness increment of over 20% compared to the base material (HVTi6Al4V= 300- 320 HV). The glass interphase consolidated in the metallic surface reached values of up to 974 HV followed by a drastic decrease to 24 HV in the polyester matrix located out of the joint area. The ultimate bearing strength ranged between 60 MPa and 166 MPa. Lesser composite degraded areas led to stronger joints. Two failure modes were observed combining initial composite bearing followed by final failure through shear of the rivet with partial rivet pullout or by full rivet pull-out. Complex failure micro-mechanisms were observed including the combination of cohesive and adhesive failures through the glass layer and the damaged composite interface. Friction-riveted joints achieved an ultimate lap shear strength of up to 80% to that of a similar bolted joint. A case study for a presumptive truss bridge application of friction-riveted joints showed a necessary of 92 rivets per truss node, 43% less than previous studies and with potential for further optimization.
Rebitagem por Fricção é uma tecnologia de união pontual inovadora para estruturas híbridas metal-polímero. Esta tese de mestrado apresenta pela primeira vez na literatura um entendimento aprofundado do processo de Rebitagem por Fricção para juntas de metal e compósito termofixo. Juntas de rebite de Ti-6Al-4V e componente pultrudado de poliéster termofixo reforçado com fibra de vidro foram produzidas seguindo três condições de processo com diferentes aportes térmicos. Diversas técnicas analíticas foram utilizadas para entender a física do processo e o efeito do aporte térmico na microestrutura final dos componentes unidos, mudanças físico-químicas no compósito, formação de camada vítrea intermediária entre o compósito e o rebite metálico e transformações metalúrgicas. Através do monitoramento da temperatura processual e do torque, um regime friccional não estável foi observado para a Rebitagem por Fricção de compósito pultrudado termofixo resultando em distintas extensões da degradação do compósito. A microestrutura da liga de Ti-6Al-4V transforma-se ao longo da secção transversal do rebite, de uma morfologia equiaxial no centro do rebite para uma estrutura acicular em sua extremidade, onde ocorre deformação plástica. Três zonas microestruturais foram propostas para cada componente da junta incluindo duas zonas termo mecanicamente afetadas e uma termicamente afetada. Mapa de microdureza foi realizado no rebite metálico evidenciando um aumento do centro para a extremidade do mesmo, próximo a 20% comparado com o material de base (HVTi6Al4V= 300-320 HV). A interfase vítrea consolidada na superfície do rebite metálico apresentou dureza em torno de 974 HV seguido de um drástico decaimento para 24 HV na matriz de poliéster localizada fora da região de união. A tensão máxima de apoio variou entre 60 e 166 MPa. Juntas com menor área degradada apresentaram os melhores desempenhos mecânicos em ensaio quase estático de cisalhamento. Dois modos de falha foram observados combinando um modo de falha inicial por deformação plástica severa no compósito seguida de falha final por cisalhamento no rebite metálico com parcial remoção do mesmo ou por remoção completa do rebite. Complexos micro mecanismos de falha foram observados incluindo a combinação de falha adesiva e coesiva através da interface entre interfase vítrea e compósito degradado. Juntas rebitadas por fricção atingiram resistência ao cisalhamento de 80% da obtida para juntas parafusadas. O estudo de caso para uma ponte hipotética treliçada revelou um número necessário de rebites de até 92 rebites por nó da ponte, 43% a menos que o encontrado em trabalhos anteriores, com potencial para futuras optimizações.
Santos, Maria Walburga dos. "Saberes da terra: o lúdico em Bombas, uma comunidade quilombola (estudo de caso etnográfico)". Universidade de São Paulo, 2010. http://www.teses.usp.br/teses/disponiveis/48/48134/tde-20042010-141954/.
Texto completoA History and Historiography of Education case study project supported by ethnographic elements and intended to understand, acknowledge, record and think about forms of play in a black community. The research is conducted in the community of Bombas, located in Iporanga, São Paulo, which is currently attempting to be recognized as a remnant quilombo (ancient autonomous slave community). The study includes the one hundred year period (from 1910 up to today) of territorial occupation by the ancestors of the current inhabitants of the region, and is based on the notion of contemporary quilombos. Bombas is an unusual location for this study as it is thrust deep in the middle of the forest and has no road, drinking water, telephone or power supply infrastructure. By assuming that playful behavior was an element of the culture (HUIZINGA, 2000), and that this culture was an appropriate subject for History and Education research, the daily use of toys, entertainment and games was studied, as were other manifestations of play, such as festivals and celebrations that are still commemorated or remembered by members of the group. The research subjects included adolescents, adults and children, and the education process within the established relationships, not only in the school institutions, was observed. The study text uses the triangulation of sources methodology and observes what Cambi (1999) has called the typological pluralism of documents to comprehend the objective (playful behavior) and its relationship with culture, history and education, and then to propose a dialogue between them. Field records, images and photos and playful situations were used as sources, as were anecdotal information and interviews with inhabitants and collaborators, and written documents selected from other studies. Each source of study received appropriate treatment for its type; for instance, the interviews relied on oral history resources. By breaking away from the customary dichotomy that polarizes the designations of field/city, urban/rural, leisure/work, erudite/popular, traditional/modern, among others, the study affirms the relevance of the proposed Hybrid Cultures theoretical condition (GARCIA CANCLINI, 2006). It also assumes that the flow of ideas, culture, education, discourse, productions, in short, the History in a pluralistic society, is a constant. In the area of Education, this study follows the principles that consider diversity to be a fundamental educational element in any context by pointing out the necessity to eliminate models that tend to homogenize (and whiten) the relationships and standardize the knowledge, and highlights the urgency of adopting approaches and practices inspired by multiculturalism.
Costa, Luiza Moreira da. "Um estudo sobre Alcibíades a partir do debate siciliano em Tucídides VI.9-23 - entre a physis anthropon e o governo de si". Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/48/48134/tde-17122014-102402/.
Texto completoThucydides, an Athenian, political thinker of the fifth century before Christ, narrated, in his only work, much of The Peloponnesian War history. Convinced that it would be great and more important than all the previous ones (THUCYDIDES, I. 1), the ancient historian, according to the criteria of his own reason, collected reports, data and general information about the strife and the nations involved, selected characters, events and speeches to compose his work of creation (ROMILLY, 1998). The result of this is the impression on the part of the readers, who accompanied the war, understood its motivations and perceived the impact of the actions of his characters in the unfolding of the strife. This role has been carefully analyzed by Thucydides, who sought to demonstrate over the course of its historical narrative the strength of the physis anthropon leading the polis. Exploring the human nature as the cause of the crisis and Athenss defeat is the response from Thucydides to understand the end of the Athenian Empire, and marks a break with the unrealistic or divine justification that was, until then, in records of the past. To demonstrate this, we have made use of the character Alcibíades in the context of the Sicilian debate (THUCYDIDES, VI.9 -23). Set up in the assembly that sought setting the following steps to the Sicilian Expedition, this debate is originated from the negative of Nícias, a commander of the expedition, from the Athenians breaking in aid to allies, undertaking the Athenian forces against the Sicily; and was consummated with Alcibíadess answer, who climbing up the tribune, made his great defense before the ekklesia. This debate makes it clear that the figure of Alcibíades: the speaker that brings together the skills to win the trust and confidence of his listeners and to convince them of what is beneficial or not to the polis, inciting fear and by exaggerating within a logical argument that crossed the impulses and the desires of the Athenians. The words that Thucydides selected for the Alcibíadess speech constituted the image of an intemperate man, dominated by hybris, who proposed governing others without having governed himself first. Allied to this reflection, it has become possible to extend the framework provided by the ancient historian, having in mind the connections observed along the research between the Thucydidess historical narrative and the Solons laws and the formation of the citizen, proposed by the platonic Socrates. Socratess concern is the same that Solon explored in his lyrics and in the drafting of laws and it is the same as Thucydides portrayed in his work. While Solon focused on the community\'s laws and social policy (JAEGER, 2010), Socrates embarked on a mission to form the true citizen to prevent the most fair form of government of degenerating.
Tonnetti, Fávio Américo. "Mapear, medir, tecer e narrar: dimensões fundamentais da ação docente permeadas pelas novas tecnologias". Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/48/48134/tde-16032017-160425/.
Texto completoAfter a review of works devoted to understand the relationships between teaching and technology in its many forms we present a series of teachers\' actions redefined in contact with digital technologies. Based on four key verbs proposed by Nílson Machado as a way to characterize and express the nature of teaching practices mapping, mediating, weaving and storytelling we discourse about the new dimensions of teaching in contact with technology devices in contexts permeated or digitally made by technology, especially in hybrid and online education modalities therefore considering Distance Education (DE) in different perspectives. Besides an examination and after presents a set of researches and proposals, this work seeks to provide insights and ideas that can contribute to the teaching practices, hoping to broaden the understanding of the teacher\'s actions in cyberspace and about the relationships mediated by digital devices examining different forms and approaches of interacting with students inside a learning community in an ecosystem paradigm of online education.
Chen, Chih-huang y 陳志晃. "Study on Efficiency Enhancement of the 48V Mild-Hybrid Electric Vehicle Inverter". Thesis, 2019. http://ndltd.ncl.edu.tw/handle/wz8f39.
Texto completoMa, Hsien-Li y 馬先禮. "A Bidirectional Hybrid DWDM System for CATV and OC-48 Trunking". Thesis, 2002. http://ndltd.ncl.edu.tw/handle/55163702961408991167.
Texto completoSolangi, Maria. "cDNA SEQUENCES OF THE CAPRINE GAMMA DELTA T CELL HYBRID CO-RECEPTOR AND PATHOGEN RECOGNITION RECEPTOR WC1 MULTIGENE FAMILY". 2017. https://scholarworks.umass.edu/masters_theses_2/484.
Texto completoLiou, Der-Hsing y 劉得杏. "Study on Machinability in turning of Ti-6Al-4V with hybrid cooling and lubrication". Thesis, 2005. http://ndltd.ncl.edu.tw/handle/77059332212236876306.
Texto completo國立臺灣大學
機械工程學研究所
93
Titanium alloy is well known as one of the typical difficult-to-cut materials. This thesis focuses on the effect of various cooling and lubricating methods on machinability in turning Ti-6Al-4V titanium alloy. The appropriate cutting fluid and its associated flow rate of the minimum quantity lubrication (MQL) applied in the cutting process are determined first. Thereafter, four types of cooling and lubrication methods during cutting are compared. They are machining with the MQL technique, machining with flooded cutting fluid, machining with a heat pipe embedded beneath the insert for heat removal, and machining with the MQL technique together with the assistance of a heat pipe. The most appropriate cooling and lubrication method is determined based on the analysis of the resulting tool wear, cutting force, tool temperature, surface finish and the chip morphology in cutting. It is found that 20% water-based cutting fluid and a flow rate of 20ml/hr are the proper combination of MQL. The use of MQL incorporates with a heat pipe assisting heat removal results in minimum tool wear. The cutting speed in turning Ti-6Al-4V titanium alloy can be increased from the normally recommended 50-70 m/min to 90m/min. Hence improvement of machining efficiency is expected.