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Slide Bearings Test Bench
Palán, David ; Knotek, Jiří (referee) ; Maršálek, Ondřej (advisor)
This master’s thesis is focused on measurement of electrical contact resistance. The beginning of the thesis is devoted to the introduction of the electrical contact resistance and electrical parameters of journal bearings. Next part of the thesis deals with engineering design of test rig. In order to verify functional measurement principle, the test rig based on engineering design has been made. In the end of the thesis the measuring devices and the measuring process is described. The measurement results from the test rig are presented.
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Plain Bearings for CI Tractor Engine
Petr, David ; Ramík, Pavel (referee) ; Dundálek, Radim (advisor)
This thesis deals with the hydrodynamic plain bearings tractor diesel engine. The first part is closer acquainted with the hydrodynamic bearing, its principles and materials used. The next part work deals with the multibody system adams-engine. The main part of this work is to model the crank mechanism and its storage in hydrodynamic bearings in the MBS program and the subsequent simulation under different operating conditions.
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Balancing Shafts Support Optimalization for Zetor 4V UŘ III Engine
Zemčík, Tomáš ; Franz, Rudolf (referee) ; Rauscher, Jaroslav (advisor)
To make a check of an contemporary balancing verification of diesel engine Zetor UŘ III with type identification 1505, the engine power 90 kW and especially friction bearing design, which could replace existing needle bearing HK 4520 type, is the aim of this diploma thesis. Bearing type modification requires constructional adjustment of engine block and balancing shaft and therefore this proposal for construction another aim in my diploma thesis. The last part of my diploma thesis is an economic balance original imposition against newly designed. Calculations are made using mathematical software MathCad, the balancing shaft is made using ProEngineer software and control calculations of bearing stresses are made with ADAMS and FEM of ANSYS system. Motivation to write this work is to prove the possibility how to decrease manufacturing costs of ZETOR TRACTORS a.s. company.
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Behaviour of Plain Bearings under Various Working Conditions
Lábus, Jiří ; Svída, David (referee) ; Dundálek, Radim (advisor)
This diploma thesis is devoted to problems of crankshaft plain bearings at five-cylinder in-line engine. Document body describes behaviour of plain bearings under various working conditions. To needs of the hydrodynamic bearings simulations is created the cranktrain virtual model. Next part of hereof document deals with problems of bearing shell design. Is created survey of the bearing materials and shortly described technological processing of shell bearing. To understand complicated problems hydrodynamic lubrication is derived Reynolds differential equation and foreshadowed succession calculation dynamically loaded bearings. In final parts of this thesis are presented most interesting results obtained from computational analysis.
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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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Modern slide bearings
Lesák, Tomáš ; Raffai, Peter (referee) ; Maršálek, Ondřej (advisor)
This bachelor thesis is professional research dealing with an overview of slide bearings in current use and their advantages and disadvantages compared with ball and roller bearings. It also describes the design, manufacturing technology, materials used for the manufacture of plain bearings, their coatings types and lubrication which are important factors in the life of the bearings.
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Slide bearing parameters of modern combustion engines
Dvořák, Martin ; Píštěk, Václav (referee) ; Novotný, Pavel (advisor)
The objective of this bachelor‘s thesis is to provide general information on sliding bearings and their advantages and disadvantages. The thesis is divided into five parts that deal with individual topics and issues. The first one is concerned with the bearings themselves, their partition and development. The second part compares sliding bearings and rolling contact bearings and their pros and cons. The next part then describes their main parameters, e.g. the friction loss or various lubrication methods. The fourth one summarizes several examples of practice, like lubricating in extreme working conditions and an overview of bearing failures. The last part deals with the construction of sliding bearings used in combustion engines, materials used to produce sliding bearings and with the issue of lubrication, which is essential for this type of bearings.
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