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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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Fuels from Biomass.
Poskočil, Milan ; Píštěk, Václav (referee) ; Rauscher, Jaroslav (advisor)
Bachelor´s thesis deals with the study of the status quo use of fuels derived from biomass for automotive engines and their prospects. The goal of this work is processing the inventory of motor fuels derived from biomass, their utilization and illustrate the developments in this field. The work is focused mainly on the situation and developments in the Czech Republic.
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Gasoline Direct Injection
Donutil, Jan ; Janoušek, Michal (referee) ; Dundálek, Radim (advisor)
This bachelor’s thesis deals with direct injection applicated in spark ignition engine. It explains how the system works and what are the benefits in comparison with older methods. Components description and a list of current engines are mentioned in the next chapter. The last section is focussed on the future of these motors.
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Fuel for internal combustion engines
Vrbický, Jiří ; Jedelský, Jan (referee) ; Štětina, Josef (advisor)
This thesis is concerned with basic features of fuels for internal consumption engines, especially their influence on thermal efficiency. It also introduces dividing of fuels and their compare in ecologic, economic and technologic side. It is concerned convectional fuels (gasoline, diesel oil) and alternative fuels (nature gas, bottled gas, hydrogen, biodiesel, biogas, methanol and ethanol).
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Critical Sector Analysis of the Fuel Market
Jaroš, Martin ; Strašil, Pavel (referee) ; Škapa, Stanislav (advisor)
In my bachelor‘s thesis I have analysed the diesel fuel market in the Czech Republic from the point of view of the petrol stations offers as well the consumers demand. It concerns oligopoly market form, where the front positions are taken by foreign brands. I have determined the structure type by the data referring to the market power of particular petrol station networks and also thanks to the price research itself. Consumers behave quite often very illogically in this market due to the lack of available information. These conclusions I have obtained by the market research I did on active drivers. A modern solution is a new web portal establishment based on cooperation with petrol stations, which would provide information about the fuel market to the drivers.
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Electronic control units of present SI-engines
Michna, Lukáš ; Beran, Martin (referee) ; Dundálek, Radim (advisor)
Bachelor’s thesis named „Electronic control units of present SI-engines” treats of presently known and extended electronic control systems of SI-engines, so those ones, who mainly control both fuel-air mixture preparing and its ignition in combustion chamber. These are two fundamental functions for engine running, so they are described in light of basic principle of operation and also in light of each kind of these systems and its developmental stage description. Next point is enumeration and description of single parts of electronic control system participating in engine controlling, separated to logic sections. The end of publication makes reader acquainted with most extended types of electronic control systems, their producers and elementary differences.
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The motorcycle diagnostic unit
Smola, Tomáš ; Šteffan, Pavel (referee) ; Levek, Vladimír (advisor)
This thesis deals with problematics of air/fuel mixture diagnosis od older carburetor motors. Especially for motors with more than one cylinder. In this thesis are informations about commercial product for diagnosis, brief informations about function of CV caburetor and best setup of fuel mixture. The next step in this thesis will be design, construction and testing of device for the diagnosis air/fuel mixture in practical use. Device will be able to measure mixture and other values witch can be used for best carburetor setup.
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Direct injection systems for spark-ignition engines
Vondráček, Václav ; Rasch, František (referee) ; Drápal, Lubomír (advisor)
This bacheleor´s thesis deals with direct injection of fuel spark-ignition motors. In each chapter you can learn about principle activities injection of fuel, meet single parts and components and learn how these components work. Further, this work compare some constructional differencies of the systems of some automobile producers and observes contemporary general way of those problems with reference to future.
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Determination of emissions and harmful particles of exhaust gases of CNG, petrol and diesel vehicles
Rozsíval, Adam ; Libich, Jiří (referee) ; Bača, Petr (advisor)
The thesis deals with an analyses of emission and harmful particles of exhaust fumes of automobiles with an environmental impact. More precisely, it describes the basic characteristics of current fuel types and emission produced by internal combustion engines. Next, it deals with the measures and possibilities of decreasing car traffic emission with respect to environmental impact. It also describes the current European standards for emission and the systems of the cars that are able to decrease emission. The work also deals with the measuring of emission and the methods that are used. According to the measuring methods, the analysis of exhalation is done and it is based on the data of the real car fleet. Values of the emission analyses are compared. The financial aspect is a part of the analyses.
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Determination of CO2 exhaust emissions for CNG, petrol and diesel vehicles
Chytil, Ivo ; Libich, Jiří (referee) ; Bača, Petr (advisor)
The thesis deals with the topic of Carbon dioxide emissions that are created by Petrol, Diesel and CNG vehicles. In the first part of the thesis, the results of theoretical calculations are compared with the values of the manufacturer of the specific vehicle. In the second part, a specific method has been selected for calculations with real data from transport. The savings of CO2 produced by the specific vehicle are expressed in percentage – depending on the fuel used. The operating expenses from the real data are calculated and compared with hybrid and electric vehicles. In the final part of the thesis, the ratio of fleet type vehicles to the financial/ecological aspect was proposed.
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