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Testing of the Common-rail pressure regulation valve by ADwin device
Šoulák, Vojtěch ; Svída, David (referee) ; Kučera, Pavel (advisor)
Tato diplomová práce se zabývá rozšířením testovacích možností vývojové stanice pomocí zařízení ADwin. Hlavní částí diplomové práce je navržení přídavného okruhu testovací stanice a naprogramování testu pro tlakový regulační ventil. V další část se diplomová práce zabývá předpokladem stavu komponent regulačního ventilu po testování. Při porovnání tohoto předpokládaného stavu a reálném stavu po testování je ověřeno správné naprogramování testu a správná funkce nově navrženého okruhu.
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Internal combustion engine control in the LabView environment
Adamec, Vojtěch ; Kučera, Pavel (referee) ; Svída, David (advisor)
This thesis deals with the control of a diesel internal combustion engine. The aim of the thesis was to make a methods overview of diesel internal combustion engines control, to develop an algorithm for a six-cylinder diesel engine control and then to program it in the LabView environment. The thesis also describes the calibration of sensors and engine control unit. The algorithm was tested using a programmed signal generator and an oscilloscope.
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Acquisition of inputs by image processing for controlling an autonomous vehicle
Midrla, Daniel ; Píštěk, Václav (referee) ; Kučera, Pavel (advisor)
This master’s thesis deals with data acquisition by image processing in order to control an autonomous vehicle. Firstly, the thesis offers a summary of theoretical knowledge relevant to the given topic. Then follows a description of creating an algorithm, which acquires basic inputs for autonomous vehicle control with the use of a stereo camera and an object detection neural network. The inputs gained from this algorithm are the class of the detected object and its distance. Finally, an experimental evaluation of the correct functionality is performed with an emphasis on optimizing the accuracy and range of the distance computation. An assessment of the ability to deploy the created algorithm in real time on a compact computer with limited computing power is also performed.
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Autonomous control of the vehicle through image processing
Fronc, Leoš ; Píštěk, Václav (referee) ; Kučera, Pavel (advisor)
This diploma thesis deals with the topic of autonomous vehicles and especially lane detection. The paper describes and compares two main approaches to the lane detection - using traditional methods of computer vision and convolutional neural networks. The aim of the work was to create a system that would be able to recognize road lanes in a real time. The proposed system consisted of a Jetson Nano computer, a ZED stereo camera and a programmed algorithm. In total, two algorithms have been developed that use completely different approaches. Finally, the whole system was tested in terms of functionality and lane recognition.
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Synthetic fuels
Pitoňák, Adam ; Kučera, Pavel (referee) ; Píštěk, Václav (advisor)
The bachelor’s thesis on the topic “Synthetic fuels” aims to introduce the reader to the issue of synthetic fuels and the possibilities of their application for internal combustion engines as alternatives to the conventional fuels derived from fossil sources. The first part of the work is focused on the introduction and division of synthetic fuels according to primary raw material. Subsequently, the properties of the fuels are compared with commonly used fossil fuels. The thesis also deals with the comparison of the equivalents of the emissions of individual synthetic fuels per unit of thermal energy supplied to the engine. Thanks to the model presented in the thesis, it is possible to compare the amount of CO2 equivalent per driven kilometre. The conclusion of this work summarizes the result of the comparison of synthetic fuels with prospects of such fuel in the future.
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Hydrogen fuel cells
Kejval, Dan ; Kučera, Pavel (referee) ; Píštěk, Václav (advisor)
The replacement of the current fuels and engines presents one of the most important tasks not only for vehicle manufacturers but also in the energy industry. Whole world is trying to limit the production of greenhouse gasses which pollute the environment and switch to sources that will not produce any harmful emissions as fast as possible. One of these are hydrogen fuel cells, which are the focus of the thesis and explains how hydrogen is produced and stored. It shows the principle on which they work, what designs currently exist and also evaluates their efficiency. According to temperature and material of the electrolyte they can be divided into various types which offer a wide range of performances and their use. Thanks to that, this device began to spread both in the Czech Republic, where the effort is to firstly expand public transportation to include busses using the hydrogen fuel cells and at foreign vehicle manufacturers where carmakers such Toyota and Hyundai already mass-produce passenger cars, trucks or buses with this source of electricity.
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Licensing system in professional football in case of Gambrinus league.
Kučera, Pavel ; Šíma, Jan (advisor) ; Landa, Pavel (referee)
Title: Licensing system in professional football in case of Gambrinus league Objectives: The main aim of diploma thesis is description of licensing system in professional football in Czech Republic, which has to be observed by professional football clubs, if they want to get a professional licence. Without this required licence clubs can not figure in I. and II. league. The next object was the comparison of Czech football and German football. Methods: In thesis is used a method of interview, method of content analysis and method of comparison. Semistructured interview took main part in datas collection. The method of content analysis was used for analysis of these datas. The method of comparison was helpful for research of second aim of this diploma thesis, which was comparison between football in Czech republic and football in Germany. Results: This diploma thesis shows positive and negative of licensing system. Further describes differencies between Czech and German football. It recommends which way is the best for raise match attendance and make match more attractive like in Germany. Keywords: football, licensing system, interview, Gambrinus league
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Modification of a three-cylinder diesel engine to a single cylinder test engine
Rejnuš, Miroslav ; Kučera, Pavel (referee) ; Píštěk, Václav (advisor)
The master thesis deals with the design of a single-cylinder diesel piston internal combustion test engine by modifying the initial mass-produced three-cylinder engine. The first part of the thesis is devoted to the introduction to the problems of diesel and experimental single cylinder engines. Subsequent chapters focus on the adaptation of the baseline engine itself, including balancing of inertial forces. Furthermore, the crankshaft operability is checked, including the determination of safety against high-cycle fatigue. The last chapter deals with the design of the connection of the adapted unit to the dynamometer.
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Four-cylinder in-line gasoline aircraft engine
Kučera, Ondřej ; Kučera, Pavel (referee) ; Píštěk, Václav (advisor)
The thesis deals with the structural design of a steel connecting rod for the aircraft engine Walter Mikron III, which is currently still manufactured and developed by company PARMA-TECHNIK, s.r.o. The proposed connecting rod would replace the current duralumin connecting rod. The work also contains a strength analysis of the designed component, in which it was aimed to verify the stress on the connecting rod, based on which the fatigue safety factor was performed. This is crucial for dynamically stressed parts of internal combustion engines. Furthermore, was investigated the effect of the change of the connecting rod on the torsional vibration of the crank mechanism. For this purpose, was built a discrete torsion model. The output of the whole work is the drawing documentation of the new connecting rod, meeting the requirements for application in an aircraft engine.
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Mixed-use building in Mikulov
Kučera, Pavel ; Klimecký, Martin (referee) ; Gerö, Jiří (advisor) ; Brzoň, Roman (advisor)
The bachelor's thesis follows a project developed within the subject AG035 Studio of Architectural Creation. The subject of the design is a multifunctional house in the place of the gap, which currently serves as a parking lot or marketplace. The multifunctional house is located close to the walls and castle gardens of Mikulov Castle - located in the urban conservation zone, which was declared in Mikulov in 1982. Due to the elevation of the plot and the street to which the design is adjacent, the multifunctional house is divided into three related parts. The outer parts are set aside for commercial purposes on the first floor (florist, newsagent, bistro). The second, third floor and attic offer a total of 8 apartments. The middle part is reserved only for a literary café. The design also includes underground parking accessible by stairs from the first floor of the outer parts of the multifunctional building. Entry and exit is provided by two ramps. An integral part is the culture of the remaining free space adjacent to the walls of the Mikulov castle. It will consist of gardens and a space/passage adjacent to the wine cellar located under the walls. At the same time, it will be possible to get from this passage to the area of the castle gardens by means of a designed elevator. The facades of all three parts of the multifunctional house are richly glazed and designed in white, beige plaster or pigmented concrete trowel. They take into account the fact that the multifunctional house is located in the urban conservation zone. The roof of the building is saddle with concrete covering in a traditional red-brown colour.
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