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Ignition engine emissions
Semela, Lukáš ; Píštěk, Václav (referee) ; Kaplan, Zdeněk (advisor)
This thesis deals with emissions of ignition engines. The introduction acquaints the reader with the history and lays out the reasons why it is a crucial topic to be dealt with. Furthermore, the term emission is being explained as well as the description of its chemical composition, the impact on the environment and human organism. The method of measuring is also mentioned in this thesis. Then the explanation continues with European Union’s current legislation. The whole thesis is concluded with information on the additional modification of emissions and chapter that outlines the future of automobiles regarding the environment.
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An aftertreatment system for the passenger vehicles with a gasoline engine
Hána, Michal ; Fridrichová, Kateřina (referee) ; Böhm, Michael (advisor)
This thesis concentrates on the issue of reducing emissions from passenger vehicles with a gasoline engine. The introduction describes the individual emission components, their origin and impact on the environment and human organism. The main part of the thesis concentrates on possibilities of reducing emissions. The function and design solution for each component of the emission system is described. Furthermore, the specific solutions for several selected representatives from diverse vehicles categories are stated. These solutions are evaluated and custom configuration is designed given the selected parameters. In the conclusion are summarised the results of the thesis.
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An emission reduction systems for vehicles with gasoline engines
Filip, Josef ; Fridrichová, Kateřina (referee) ; Böhm, Michael (advisor)
This bachelor thesis deals with ways for emission reduction of passenger cars with an ignition engine. The introduction describes the principle of combustion, the methods of preparation of the ignition mixture and pollutants that arise during the combustion. In the main part of the work, the individual specific provisions for reducing emissions used in modern vehicles are analyzed in detail. Further the examples of current emission systems for several selected cars are presented. All the findings are summarized in the following chapter. In the next part, own configuration of the emission system is described in detail, which is designed with the regard to maximum efficiency in reducing emissions. The summary together with the evaluation of the current situation and the outline of the possible direction for further development in this area are in the last part of this work.
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Stage IV Emission Standards for Tractor Engines
Vít, Jakub ; Beran, Martin (referee) ; Dundálek, Radim (advisor)
The aim of this bachelor thesis is to explain the mechanism of injection of carbamide and its installation on a vehicle. The first part of this work deals with the reduction of pollutants in the exhaust gases and with the emissions standards which limit the level of pollutants in the exhaust gases. The second part consists of an overview of tractor brands available at Czech market and their classification based on the type of system they use on their new models to reduce the pollutants in the exhaust gases.
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Modification properties of MnOx based positive electrode for AFC
Kamrla, David ; Bača, Petr (referee) ; Novák, Vítězslav (advisor)
The subject of this graduation thesis is low-cost alkaline power cells and especially electrodes with alternative catalyst made of MnOx + dopant. The thesis expands the bachelor´s thesis [1] and previous research [4] [12] [13] [14]. Volt-ampere characteristics and power characteristics of the katodes for AFC, subsidized with various dopants, are the outcome of this project. The project presents the optimalisation of preparation process of AFC electrodes. The aim is to prepair several electrodes with identical construction, which varies only with the type of the dopant.
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Fuel cell and vehicles
Zlámal, Josef ; Kloss, Ondřej (referee) ; Kaplan, Zdeněk (advisor)
In the first part of this work a historical development of fuel cell, description of its construction and function including a comparison of currently used fuel cells is presented. The next part of this work is focused on fuel for fuel cells, its production, distribution and storage. The last chapters are dealing with fuel cell automobile, project of particular car companies and author´s assessment of individual fuel cell systems.
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Pressure loss of catalyst carriers
Linda, Matúš ; Kilkovský, Bohuslav (referee) ; Jecha, David (advisor)
The diploma thesis is divided into four main parts. The first part deals with the issue of waste management and its energy utilization in waste incineration. Processed harmful substances produced by incineration as well as emission limits. It deals with the types of catalytic carriers, their description, production and more detailed processing of ceramic foam VUKOPOR. The second part is devoted to technologies utilizing catalytic processes and a more detailed specification of the process. In the third part there is processed the calculation methods for pressure losses for individual types of carriers. Fourth, the most extensive part describes the INTEQII experimental device, its technology and construction, as well as the principle of the practical part, measuring of the pressure losses of carriers. It includes the evaluation of pressure losses in separate categories of carriers, such as the bed, HoneyComb and VUKOPOR ceramic foam. Subsequently, a comparison of the pressure losses of all carriers is made relative to the reference size of 1 m. The impact of bonding of VUKOPOR foam samples on the size of pressure losses is discussed. At the end of this section, the suitability of calculation methods for individual carriers is evaluated, depending on the experimental pressure loss data.
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EURO 6 Emission Standards
Velešík, Aleš ; Prokop, Aleš (referee) ; Dundálek, Radim (advisor)
Bachelor´s thesis is focused on the approach the issue of Euro 6 emission standards. There is a general description of the tests, which the manufacturer must undertake and successfully complete to produce cars at this emission level. There is also a description of the harmful substances produced from the exhaust system of a car and an overview of the structural elements to reduce them. In conclusion, the reflection on the issue of emission standards and their constant tightening.
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