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Piston for Racing Engine Škoda 110
Gerák, Jakub ; Maršálek, Ondřej (referee) ; Svída, David (advisor)
This Bachelor's thesis deals with the defect of the piston Metalex for a racing engine Škoda 110. The aim of my work is to find the reasons for the piston defect, to check the most stressed parts by strength calculation and suggest a possible structural design so that the piston withstands all stresses throughout the required lifespan.
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Three-cylinder Engines
Kočvara, Antonín ; Janoušek, Michal (referee) ; Drápal, Lubomír (advisor)
The main purpose of this thesis is to summarize the progress of four-stroke straight-three engines from the beginning of their production to these days in perspective of parameters and construction. Another goal is to show reasons for their exploitation. The reasons of exploitation are mostly compared to four-cylinder engine and some of them are supported by a calculation. There is also a chapter showing force acting in power train and its influences on straight-three engines. The closing part is dealing with possible ways in future development of straight-three engines.
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Silicone damper of a six-cylinder in-line diesel engine
Drozdek, Lukáš ; Novotný, Pavel (referee) ; Píštěk, Václav (advisor)
This thesis "Silicone damper of a six-cylinder in-line diesel engine " is focused on the proposal of alternative using of silicone damper for the a six-cylinder in-line diesel engine, which is made for tractors and other industrial aplications. The aim of this thesis is to count the oscilation of crankshaft by the help of appropriate dynamic model, then to propose such a basic parameters of silicone damper, which absorbes torsion blip crankshaft to acceptable value. The next part of my thesis is proposal of the constructive implementation of fixation the silicone damper on the free part of crankshaft. The last part of my thesis is comparing and evaluating the oscilation of crankshaft without a dumper and with a new propsal of the silicone damper.
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Concept of an In-line Spark-ignition Engine
Kočvara, Antonín ; Píštěk, Václav (referee) ; Drápal, Lubomír (advisor)
This thesis deals with comparison of straight four-cylinder petrol engine with a displacement of 1,5 litres and its three-cylinder alternative, which is based on a four-cylinder. The thesis starts with a research, where are examples of some currently manufactured engines. The research is followed by design of both engines, where the design of the crank mechanisms is made more in detail. After that, both crank mechanisms are subjected to dynamic analysis using FEM and MBS methods. The thesis ends with comparison of both engines in terms of crankshaft load, mass and dimensions.
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Shape Optimalisation of Aircraft Engine Crankshaft
Vopařil, Jan ; Drápal, Lubomír (referee) ; Novotný, Pavel (advisor)
This thesis describes the variety and the width of issues connected with crankshafts of combustion engines. It distinguishes different factors, which influence the shape and size of these crankshafts and the selected findings are then transferred into the design of crankshaft for the particular engine. The thesis also presents coherent description of application of topology optimization to the particular crankshaft and also different, more complex design procedures leading to the optimal shape of crankshaft are afterwards suggested. Quality of such a design is then verified by comparative analysis of fatigue of the crankshaft.
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