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Cable-supported pedestrian bridge
Knotek, Jan ; Brtáň, Stanislav (referee) ; Nečas, Radim (advisor)
The subject of this diploma thesis is design a cable-supported pedestrian bridge. Three different variants of the solution were created for the design. For detailed processing, variant no.2 was chosen - a suspended bridge with a pylon in the middle of the span. The main task is the static design of the supporting structure. The model for the lengthways is created in ANSYS. The SCIA engineer was used to solve crosswise. The assessment and dimensioning was done according to the limit state principles and valid standards.
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Sheletered Housing Risk Assessment
Knotek, Jiří ; Hofštetrová, Michaela (referee) ; Adamec, Vladimír (advisor)
The aim of this diploma thesis is to analyze the risks associated with secure living made available by the company Senior Sen, s.r.o., which provides social services and offers solutions for people's unfavorable social situations. In the theoretical part the problematic areas, threats and risks will be examined, with a focus on security risks. In the practical part the risks will be analyzed, evaluated and ways to reduce them will be suggested.
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Lokomotive engines ČKD class K 12 V 170 DR
Machálek, Ondřej ; Knotek, Jiří (referee) ; Zubík, Martin (advisor)
This thesis is focused on construction of turbochargered diesel engines of the third to fifth version of ČKD company marked as K(S) 12 V 170 DR and contains an overview of construction changes which were made during their uses. There is also mentioned construction aspects which influented reliability of theese engines in practise.
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Characteristic Piston Ring Failures and Their Corrective Methods
Orság, Josef ; Knotek, Jiří (referee) ; Raffai, Peter (advisor)
This Bachelor's thesis concerns the most common failures of piston rings. The first part of this thesis focuses on the design of a piston ring and on the load affecting it. The second part describes various kinds of lubrication. This section also shows, which lubrication states occur during operation of internal combustion engines. And final part is devoted to the most common failures of the piston rings and how to prevent them.
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Piston Rings of Modern Diesel Engines
Homola, Petr ; Knotek, Jiří (referee) ; Raffai, Peter (advisor)
This bachelor thesis concentrates on piston rings and is divided into several points. First point deals with the functions of piston rings and with the demands for them, in the second point there is a division according to the type of the ring and constructing solution. Another chapter deals with materials that are used the most when fabricating piston rings and the last chapter deals with the surfacing that is used the most.
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Modern Turbocharger Rotor Supports
Kortán, Daniel ; Raffai, Peter (referee) ; Knotek, Jiří (advisor)
This bachelor thesis focuses on the options of impositions of turbocharger rotors. The first part focuses on the construction of turbochargers and description of the principle of turbocharging engines with internal combustion. The second part focuses on the description of the construction of rolling and sliding bearings and explanation of options the particular types of impositions used in turbochargers nowadays.
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High Speed Revolution Slide Bearings
Růžička, Stanislav ; Knotek, Jiří (referee) ; Maršálek, Ondřej (advisor)
Bachelor project analyzes the use of high-speed plain bearings in turbocharged internal combustion engines equipped with turbochargers. The first part is devoted to a general description of turbochargers for internal combustion engines. Their function, design of the device itself as well as the individual components, the possible ways to control the supercharging. The main part analyzes the calculation of plain bearings in practice.
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Dynamics of Turbocharger Rotor using Slide Bearings based on MBS
Hromádka, Adam ; Knotek, Jiří (referee) ; Novotný, Pavel (advisor)
The first part of the thesis describes construction of turbochargers. The next chapter summarizes currently used methods to solve dynamics of vehicle turbocharger´s rotor. Build-up of the model of a rotor and substitution of a joint with a bearing is appended with advantages and disadvantages. Practical part of the thesis focusses at analyse of a specific rotor of turbocharger with use of MBS. Output of the analyse are rotor´s vibrations. Last chapter complains methods to improve the model.
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Noise impact of combustion engine exhaust systems
Ptáček, Petr ; Knotek, Jiří (referee) ; Zubík, Martin (advisor)
This bachelor’s thesis is focused on creating a research study about noise of combustion engine exhaust systems. Introducing of this work coves all parts of common exhaust systems while mostly focused on silencers. It further describes several methods of measuring the noise established by legislation and at its end it deals with a noise impact of exhaust system treatments.
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