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Design of Gear Timing Mechanism for SI Engine
Štábl, Tomáš ; Beran, Martin (referee) ; Svída, David (advisor)
Tomáš ŠTÁBL Design of Gear Timing Mechanism for SI Engine MT, IAE, 2009, 62 pp., 27 fig. This master thesis is concerning the valve train proposal of the spark ignition engine for sports purposes. Antecedent to the actual proposal is the division and retrieval of the modern valve trains, the valve train acting forces description, division and description of the individual valve-lift curve parts , valve springs and the dynamic models of the valve train. In the thesis there are designed the valve lift curves with the continuous course of acceleration, valve springs and valve springs natural oscillations damper for engine Honda CBR 929RR. The dynamic analysis of valve train approach is performed.
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Belt Drive for Valvetrains
Tomanec, Filip ; Rasch, František (referee) ; Novotný, Pavel (advisor)
This bachelor’s thesis deals with belt drive of valve timing mechanisms, estimation of their vanteges or disavantages. In the first section treat of drive for valvetrains generally, summary description of different drives types and comparison their features and right application. In the second section deals specially with toothed belt systems – construction of toothed belts, their types, marking, most frequent failure, tension and guide. In the last section is showed real solution of timming belt drive.
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Aircraft Piston Engines
Nepraš, Ondřej ; Svída, David (referee) ; Dundálek, Radim (advisor)
This thesis is focused on the overview of aircraft piston engines. Attention is devoted to known, nontraditional or other interesting construction types of aircraft piston engines largely from period of Second World War. This paper looks at the historical development of aircraft engines and propellers, and is followed by a detailed description of the piston engine design. The detailed description will form the main focus of the thesis. This will cover the main requirements and differences of aircraft piston engines types. Particular engines were selected, described and technical data was given.
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Uncoventional Valve Control
Janoušek, Michal ; Svída, David (referee) ; Dundálek, Radim (advisor)
This bachelor thesis describes some non-traditional systems of valve control in four-stroke in four-stroke engine. The first part is about basic valve train arrangement and their use. Further work continues the basic description of selected non-traditional systems of control valves, these are the systems used both in ordinary mass-production, and the racing sport. The thesis included a brief historical development of individual systems and their application in practice use.
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Aircraft Engines till the End of WWII
Falta, Libor ; Drápal, Lubomír (referee) ; Dundálek, Radim (advisor)
Bachelor’s thesis deals with aircraft piston engines until end Second World War. Thesis surveys about known, the most use and non-traditional types of engines in timeline. At the beginning it deals about history of aviation and the first use of piston engine as power source energy for controlled flight. There are high requirements on aircraft piston engines. Improving construction and increasing output of engines. In every chapter typical construction and the most powerful engines of the period are described. Thesis includes influence of both World Wars and some prestigious racings, which considerably accelerated global development. Explain the limit for increase output of piston aircraft engines in the last part.
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Computational modeling of valvetrain mechanical losses
Mačuga, Martin ; Píštěk, Václav (referee) ; Novotný, Pavel (advisor)
The thesis disserts upon computational modelling of valve train mechanical losses, finding the appropriate method of solving and its application on valve gear in Diesel in-line four-cylinder engine. The thesis further disserts upon proposition of appropriate adjustments leading to the reduction of mechanical losses. The calculation was performed in MBS software ADAMS.
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Calculation of OHV-Valve Gear Dynamic Stress
Opluštil, Tomáš ; Kobský, David (referee) ; Rauscher, Jaroslav (advisor)
This diploma thesis deals with investigation of dynamic straining valve OHV for four-valve head diesel engine Zetor 1505 – 90 kW. The calculation is performed analytically in mathematic software MathCad and MBS software ADAMS/Engine 2005. Also in this diploma thesis is from results obtained from MBS system perfomed stressed analysis valve_rocker arm gear divorce method final elements (MKP) in program ANSYS 10.
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