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Valvetrain of Compression-ignition Tractor Engine
Mikula, Vojtěch ; Janoušek, Michal (referee) ; Drápal, Lubomír (advisor)
This bachelor thesis deals with the main types and parts of the valvetrain systems of four-stroke engines. In the first part of the thesis are presented the most widely used versions of valvetrains and their use in the tractor engines. In the next part of the thesis is performed the construction and stress calculation of the valvetrain according to proposed proportions.
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Regulatory and safety features hydraulic circuit
Smyček, Ondřej ; Hloska, Jiří (referee) ; Škopán, Miroslav (advisor)
This bachelor´s thesis is focused on safety and regulatory elements of hydraulics. The main objective is to deal with options which are offered today. The theoretical part is accompanied by a design of throttle valve in a shorted circuit for an exchanger, which is a part of the heat transfer station, type AQHS by the company Tenza, a.s. In this design, two calculating softwares are used and compared. The input data for the design are based on the already existing heat transfer station Dřevařská 31, 33.
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Valvetrain of Compression-ignition Tractor Engine
Mikula, Vojtěch ; Janoušek, Michal (referee) ; Drápal, Lubomír (advisor)
This bachelor thesis deals with the main types and parts of the valvetrain systems of four-stroke engines. In the first part of the thesis are presented the most widely used versions of valvetrains and their use in the tractor engines. In the next part of the thesis is performed the construction and stress calculation of the valvetrain according to proposed proportions.
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Unconventional design for internal combustion engines
Šenkýř, Miroslav ; Imriš, Pavel (referee) ; Šplíchal, Miroslav (advisor)
The work is focused on unconventional concepts for internal combustion engines, namely, internal combustion engines of unusual structures. These are the engines that have different shapes of combustion chamber, shapes of shafts and specific output from the conventional concepts. This paper describes an unconventional engines as the Wankel engine and the Nutating engine. The work explains the construction, operating principle, advantages and disadvantages. Due to the continuous improvement of structures of these engines they have the future prospects in the aviation industry.
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Electrically adjusted safety valve for HFA liquids
Šuranský, Michal ; Tlustoš, Jiří (referee) ; Grepl, Robert (advisor)
The purpose of bachelor’s thesis is proposal and implementation of automation mechanism of electrically adjusted safety valve for HFA liquids and its tuning and testing based on provider’s requirements. Automation mechanism proposal includes suggestion of mechanical, electronical and software components of the device. As a result of thesis is via Simulink’s Real Time Toolbox operational prototype with adjustable position. The provider of the valve is firm ŽĎAZ a.s., from Žďár nad Sázavou.
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The device for measuring of camshafts timings
Jozíf, Lukáš ; Mazal, Pavel (referee) ; Mazůrek, Ivan (advisor)
Bachelor’s thesis is focused on constructional concept of device for measuring of camshafts timing and its wear-out. After short introduction and definitions of basic concepts there are problems of cams design analyzed and overview of the commercially offered devices is mentioned. Next part focuses on construction of the proper device including design documentation. Procedure of measuring with the device and example of some data evaluation is described. In the conclusion I evaluated constructional and economic aspect the whole concept.
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Value Orientations
Šamanová, Gabriela
In a survey in May CVVM inserted a question intended to trace the degree to which the Czech public believes in selected values from the family, work, and socio-political spheres and the sphere of lifestyle in general. The respondents were asked to rate on a four-point scale how important they considered each of the indicated values.
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