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Gearboxes of Trucks and Buses
Vítek, David ; Hejtmánek, Petr (referee) ; Blaťák, Ondřej (advisor)
This bachelor's thesis deals with background research of gearboxes of trucks and buses. The first part of this thesis forms familiarization with various parts of the transmission system, which we can see in trucks and buses, their principle and design. The second part deals with systems that use the best known manufacturers of trucks and buses, as well as current trends in this area.
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Computational Models of Transmission Dynamics
Czakó, Alexander ; Řehák, Kamil (referee) ; Prokop, Aleš (advisor)
This bachelor thesis deals with a summary of knowledge about the computational models of transmission dynamics. Dynamics modelling has different levels of complexity. From the modal, harmonic analysis solved in the FEM, up to creating a virtual prototype in the MBS softwares. In the introduction, there are presented the basics of analytical dynamics and mechanical oscillation which are the basis of individual analysis. Vibration sources in transmission are described as well.
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Powertrain of a modern electric vehicles
Mraček, Pavel ; Zajac, Roman (referee) ; Otipka, Václav (advisor)
The bachelor’s thesis deals with powertrains of modern electric vehicles. The opening part briefly mentions the important historical milestones of electric mobility. The main part of the thesis describes different concepts of powertrain layouts and analyses its main components. The described components are mainly electric motors, batteries, and transmissions. The whole thesis is concluded with comparison of mass–produced electric cars divided into two categories according to the price.
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Modern Tractor Transmissions
Bartošová, Daniela ; Řehák, Kamil (referee) ; Prokop, Aleš (advisor)
This Bachelor thesis concerns an overview of the modern trends in the area of tractors transmissions. It explains the reason why both the power shifts and the continuously variable transmissions. Further on, this thesis emphasizes the innovative elements of transmission concept at selected tractor manufacturers.
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Real-time protocol implementation
Procházka, Jan ; Skořepa, Michal (referee) ; Burget, Radim (advisor)
Thesis deals with multicast broadcasts, discusses the type of ASM and SSM. Also deals with the principle of RTP / RTCP protocol for large multicast groups, for example, broadcasting IPTV. It was created a model for simulating the behavior of the network load in a large number of receivers. The application was developed in Java and uses the recommendations of RFC3550. There are also analysed processes of communication, initialization, log out, the structure of the data packets and signaling packets. The system is designed that can simulate multicast network and obtain the estimated parameters of the operation, or can operate in real traffic, for example, as a third-party monitor. In both modes, the measurement was carried out model situations. The results of the measurements were then compared. Principle and system control was described in detail. Output measurements are graphically processed and included in the work.
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Design of gearbox for electric vehicles
Košík, Matej ; Prokop, Aleš (referee) ; Řehák, Kamil (advisor)
This diploma thesis deals with designing electric vehicle gearbox. Gearbox should serve as virtual replacement for actual transmission of VW ID.3 EV. Designed gearbox has two gears. In the first section there is an extensive search processed of drivetrain and transmission of battery electric vehicles. Next section contains choice of transmission concept and analyses solving of individual structural nodes – gear wheels, band breaks (components that engage individual gears), carriers, shaft, bearing. In the conclusion of diploma thesis, the two-gear planetary transmission is evaluated.
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Transmission of Air Turbines
Pauliny, Matúš ; Prokop, Aleš (referee) ; Janoušek, Michal (advisor)
Cílem této bakalářské práce je rešerše konstrukcí převodových ústrojí používaných ve větrných elektrárnách. To zahrnuje: popis požadavků kladených na převodová ústrojí větrných elektráren, sestavení přehledu používaných konstrukčních uspořádání, a zhodnocení jejich použití z hlediska účinnosti a životnosti.
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Electric and Hybrid Vehicles Analysis
Slaběňák, Patrik ; Kuchyňková, Hana (referee) ; Hájek, Vítězslav (advisor)
Nowadays, oil resources start to decrease, therefore it is necessary to think about alternative sources of energy. The result of this semester project is a basic overview of the current development of electric and hybrid cars, with potential application in normal operation and the proximity of their main characteristics, such as mileage, price and service when traveling. The energy required to operate the electric stored in batteries are recharged using the power stations, which is also devoted part of the work. The thesis focuses on the design and calculation of power consumption for a defined route of four-wheel electric wheelchair. The conclusion of the thesis deals with the future development of hybrid and electric vehicles, and with the expected trends in the field of power electronics and motors and with the propagation of hybrid vehicles to the customers.
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The restoration of Trabant 601 Historic Vehicle
Krček, Štěpán ; Janoušek, Michal (referee) ; Dundálek, Radim (advisor)
The aim of this thesis is to create a technical procedure for the renovation of the automobile Trabant 601 and to subsequently describe the use of this procedure in practice. The first part describes the history and development of the car manufacturer VEB Sachcenring Automobilwerke Zwickau. This is followed by the history of the automobile Trabant 601 with the description of manufactured variants. The contents of the subsequent chapters are the technical descriptions of the vehicle and of the procedure for its renovation. The whole process of renovation is substantiated by photographic documentation. The last part includes financial assessment of the whole project.
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Effect of optical connectors quality on transmission
Bernkopf, Miroslav ; Křepelka, Václav (referee) ; Filka, Miloslav (advisor)
This diploma thesis deals with optic fiber connectors and their influence on transmissions realized via fiber optics. Optical fibers and lightguides play the key role in telecommunications because of constant demands of higher bandwidth and data rates. Original metalic wires do not meet market requirements and so the fiber optics are more and more being used. There are various types of fibers and there are also many ways of connections. This work deals with demountable way of connection – optical connectors, which have the biggest influence on a total attenuation and route length. Connector has to meet various requirements such as cleannes, quality, mechanical construction and ferrule polishing.
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