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Alternative Powertrains and Fuels
Ondica, Rastislav ; Prokop, Aleš (referee) ; Dundálek, Radim (advisor)
This thesis explores different options about how to drive a vehicle, than using petrol and diesel. It discusess alternative fuels for combustion engines. It also explains hybrid and electric powertrains. It concentrates mostly on aspects such as ecology, costs, safety and the possibility of using those solutions.
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Vehicle thermal battery heat recovery system architecture loop
Stanko, Michal ; Beran, Martin (referee) ; Bazala, Jiří (advisor)
Táto práca sa zaoberá významom a možnosťami rekuperácie tepla výfukových plynov, ktoré pomáhajú pri štarte urýchliť zahrievanie motora a tým znižovať emisie. Teoretická časť pojednáva o emisiach a v snahe znížiť ich o predošlých konštrukčných riešeniach v priebehu rokov. Praktická časť je venovaná vytvorení modelov s implementovanými systémami rekuperácie tepelnej energie a ich dopad na teplotu chladiacej kvapaliny a oleja ako aj na celkovú spotrebu vozidla.
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Usage and Future in Alternative Drive of Automobile
Žalman, David ; Ramík, Pavel (referee) ; Dundálek, Radim (advisor)
The aim of this bachelor thesis is to state an overview of alternative drive of automobiles and their effect on ecology. The main part consists of a description of specific characteristics and peculiarities of power units, their advantages, disadvantages and shows examples of some vehicles. In the conclusion of the thesis it is foreshadowed in what way the car industry could proceed in the subsequent years.
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Electric drives in commercial vehicles and buses
Bahenský, Štěpán ; Kaplan, Zdeněk (referee) ; Píštěk, Václav (advisor)
This bachelor thesis focuses on electric and hybrid powertrains, which are used in utility vehicles and buses. According to this bachelor thesis is divided into two main parts. The first part deals with pure electric drives and its basic components. The subchapters describe various types of engines that are commonly used, but also the features and technologies of batteries. The second part deals with hybrid technologies, division according to the arrangement of components in vehicles, advantages and disadvantages of these solutions. Attention is also paid to the possibilities of battery systems. At the end of both parts, there are examples of commercial vehicles and buses with appropriate motorization, their comparison with competing models and a list of chosen technical parameters. The final chapter summarizes the current direction of the market and its further possible development in the future.
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Hybrid vehicle propulsion
Sommer, Matěj ; Kloss, Ondřej (referee) ; Kaplan, Zdeněk (advisor)
This thesis sums up a comprehensive overview of all possible ways of hybrid propulsion and points out the andvatages and disadvantages of each of these designs with special attention to fuel cell vehicles. It includes a presentation of my own opinions regarding this issue and an estimation of future development of hybrid propulsion technologies and their place on the market with personal vehicles.
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Aspects impact trends in the operation technology of civil aviation aircraft
Korytář, Jan ; Šplíchal, Miroslav (referee) ; Chlebek, Jiří (advisor)
The aim of the work is a general description of the effects on air traffic and aircraft. The first part of the work is devoted to a brief description of the development of individual technical parameters and performance of aircraft from the 1920s to the present with an assessment of the effects. The second part of the work is about the influence of current requirements and the third part is a general view of the future development of construction and technology for more economical and environmentally friendly air transport
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Elektrické pohony vozidel
Kohout, Evžen
The subject of this bachelor thesis is to create a research on the field of electric drive. In the thesis, first a summary of the history of electromobility is made and then a brief overview of the technical solutions used by today's electric vehicles is created. This section focuses in particular on electric motor designs, battery types or powerbox construction. Subsequently, an overview of electric vehicle concepts and an analysis of the different aspects affecting the stability of the vehicles are made.
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Antioxidanty ve vybraných odrůdách hrušní
Havlíčková, Barbora
The subject of this master´s thesis was primarily antioxidants in selected pear varieties. Among the pear varieties selected were European varieties ('Williams', 'Erica', 'Electra', 'Beta', 'Conference'), Asian varieties ('Kumoi', 'Ju Li', 'Nijiseiki', 'Shinko') and Asian-European hybrid variety 'Benita'. The content of individual antioxidants in the varieties was determined using the HPLC-MS/MS method. The resulting values were processed into graphs in the Excel program and statistically evaluated using the Statistica program. As part of the cluster analysis, the samples were divided into two groups based on the analysis of antioxidant content. The similarity of the 'Benita' variety hybrid to European varieties was also found. Using the PCA method, the data were divided into four groups. The highest content of total antioxidants was determined in the hybrid 'Benita' (2175,11 μg/g), on another hand, the lowest was in the European variety 'Williams' (277,73 μg/g). Some Asian varieties contained more antioxidants than European ones, while others contained less. It was found that the varieties analysed contained the most procyanidin b1/b2, while procyanidin c1 was not detected in any of the varieties. In the next part of the master´s thesis the development of the pear industry in the Czech Republic was monitored, where the development of the price level and harvest, the average yield, the consumption of pears per inhabitant of the Czech Republic, a foreign trade, a comparison of EU+UK production were monitored According to the obtained data, the 'Conference' variety and the 'Lucas' variety were the most cultivated in the Czech Republic. Annual consumption per person varied between 2,5-3 kg. Compared to the most other EU members and Great Britain, the pear production in the Czech Republic was low (4000-10000 tons/year).
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The phenomenon of hybrid activities of state and non-state actors
Havlík, Martin ; Hynek, Nikola (advisor) ; Ludvík, Jan (referee)
The rigorous thesis deals with the issue of hybrid action of state and non-state actors using a wide range of tools of power to promote their own interests. The primary intention is to relate the content to the concept of security according to the Copenhagen school, which was one of the most important in the second half of the 20th century after the collapse of the bipolar world order to expand the dimensions of security. The definition of the main concepts of security is further extended by Clausewitz's concept of war and the American concept of Theory of Victory. The introductory theories are followed by an analysis of key theoretical apparatuses of important Western, Russian and Chinese security experts, which are then compared in relation to the essential factors of individual hybrid approaches. The work further describes in detail the significant categories of tools such as soft power, hard power, smart power and sharp power. An important part of the work is also the analysis of state, non-state and proxy-state actors, as the main carriers, users and representatives of hybrid action. In this context, the key determinant is the chosen reference object in the form of the Czech Republic. To complement the issue, the work also includes the related area of facing hybrid threats and hybrid action...
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