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Aircraft engine
Kalugin, Ivan ; Ramík, Pavel (referee) ; Píštěk, Václav (advisor)
This thesis is focused to design piston rods for aircraft petrol six-cylinder engine with 102 kW output power and project their form. Other part deals with analysis of balancing of arranging and fort control one of piston rod.
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Cam-shaft replacement of crank-shaft powertrain of combustion engine
Suk, Jakub ; Blaťák, Ondřej (referee) ; Zháňal, Lubor (advisor)
Diploma thesis deal with possibility cam-shaft replacement of crank-shaft powertrain of combustion engine. In exordium work are designed basic engine data herewith type powertrain. Subsequently is designed several types stroke curves of lobe, after needs on course stroke. Further is in work elaborate engineering design body motor, in detail is solve construction body lobe. In last of capitol is evulate functionality virtual model. At the close are reviewed record and compared benefits and disavantages such engine type.
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Analysis of forging disagreement
Novotný, Karel ; Hoza, Jiří (referee) ; Fiala, Alois (advisor)
This diploma thesis deals with the generation of the different drope stampings in industrial process in MBNS Kovárna Company. The main purpose of this thesis is analysis of the industrial process and finding the main factors influences on the process. It especially deals with forgings of the shafts and also flanges with the similar quality of material 42CrMo4. Reasons of the disagreements are focused on surface insensibilities of the forging - crack. First theoretic part introduces company, meaning of the quality of material and describes tools used for finding reasons of the generation of disagreements. In the second practical part is described the whole industrial process and determination of the reasons of disagreements. In concluding part the results are analyzed and some correctional recommendations are suggested.
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Drive of control ring PVE Merkersbach
Skoupý, Jiří ; Veselý, Jindřich (referee) ; Kašpárek, Jaroslav (advisor)
This thesis is focused on determination of forces acting to regulation ring of water power plant Markersbach (Germany). Solution of the problem is realized for two variants of servomotors – with and without servomotors acting surfaces balancing. Next topics of this thesis are strenght calculation of piston rod and bottom of the servomotors. Minimalization of the size of servomotors plungers by change of regulation kinematics has been done and minimal pressure in the pressure tank is determined. At the conclusion of this thesis received results are mentioned and its interpretation has been done. This thesis is provided for company Litostroj Power, ČKD Blansko Engineering, a.s.
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Connecting rod of aircraft engine
Vaněk, Václav ; Svída, David (referee) ; Píštěk, Václav (advisor)
This thesis describes the design layout of piston rods in a flat aircraft engine. It also includes a proposed set of dimensions of the inner and the bifucated piston rods as well as a test of forces acting on a given piston rod. The end of this work focuses on a computed strength test of the inner piston rod.
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Design of single-cylinder diesel engine
Němec, Jan ; Ramík, Pavel (referee) ; Píštěk, Václav (advisor)
This thesis deals with the construction of the whole combustion engine, the crankshaft design, the piston and the piston rod. It also outlines the central lubrication, the cooling, the injection pump, the movable pump and the gear pump as well as fuel filtering, injection, engine timimg, etc. The four-cycle engine has four working cycles. During the first cycle the "clean" air is drawn and the piston moves from the bottom centre to the top centre and it comes to compression in the cylinder thanks to the adjusting of the advance and the fuel is injected into the cylinder. As the piston moves rapidly to the top centre, the pressure and the temperature increase so much that the fuel ignites. The pressure is about 26 atm (2.634Mpa) and the temperature is about 600°C. The fuel burns ideally in spherical wave fronts. The fuel is injected under high pressure as aerosol generates. As the fuel expands, the volume increases and the piston moves to the bottom centre. And it is its only working cycle.The piston moves from the bottom centre to the top centre and the exhaust valve opens through which the hot gases of combustion leave - and everything repeats. The design of the particular components is shown in the animations. Modelling and simulations were produced using CAD system. Everything is supported with calculations.
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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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Powertrain of in-line four-cylinder spark ignition engine
Mačuga, Martin ; Rauscher, Jaroslav (referee) ; Píštěk, Václav (advisor)
According to given to cylinder diameter, stroke and ideal indicator diagram we will investigate with maximum cylinder pressure and further design for proportions piston insider ( piston and piston - pin) as well as piston rod. Then shall do strength calculation upper connecting-rod eye according to given to calculations namely for the select material of piston rod. In the end we evaluate the select material whether is for suggested piston rod fit.
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