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Unit Injectors
Cihlář, Lukáš ; Drápal, Lubomír (referee) ; Dundálek, Radim (advisor)
This bachelor’s thesis deals with the description of unit-injector system. Injection system used in passenger cars as well as Unit-Pump-System used in trucks is described. One chapter deals with general problems of emissions, including description systems of the reduction exhaust gases. In the end is the practical application of the system in the engines of the Volkswagen Group.
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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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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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Powertrains of BMW cars
Guláš, Tomáš ; Ramík, Pavel (referee) ; Píštěk, Václav (advisor)
Bachelor's thesis deals with the powertrains of the Munich carmaker BMW. It evaluates their historical development, focuses on the interesting innovative solutions in this domain, describes the current status and the success of BMW in the world market, points to a wide perspective and vision for the future car.
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Alternative Fuels for CI-engines
Matoušek, Martin ; Řehák, Kamil (referee) ; Dundálek, Radim (advisor)
The topic of this bachelor thesis is alternative fuels applicable in diesel engines. First, a brief introduction to the diesel engine is given, then the individual alternative fuels are described. The most important findings about these fuels are summarized and a comparison with diesel fuel is made. Finally, each fuel is evaluated in terms of its advantages, disadvantages and applicability in practice.
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Study of the ecological impact of production, operation and disposal of various types of cars
Raffay, Tobiáš ; Čudek, Pavel (referee) ; Jaššo, Kamil (advisor)
This master thesis focuses on the problem of the ecological impact of the production, use and disposal of vehicles. The theoretical part summarizes the necessary theoretical knowledge for an introduction to this issue. Thus, it focuses on the entire life cycle of a passenger vehicle and the emissions associated with it. The thesis deals with the greenhouse gases released during the whole life cycle of the vehicle. Thus, from the processing of materials, the production of passenger car parts, also in the production and combustion of fuel as well as in the disposal and recycling of the vehicle. The work compares the emissions of petrol, diesel, electric and hydrogen vehicles.
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Catalytic converter and particulate filter functions on diesel vehicles
Šišpera, Adam ; Beran, Martin (referee) ; Bazala, Jiří (advisor)
Tato bakalářská práce se zabývá představením dieselových emisně-redukčních systémů široké veřejnosti, odkrývá základní principy funkce dieselova motoru, mechanismy vzniku emisí a následně se věnuje jejich regulaci za pomocí katalytické redukce a filtru pevných částic. Odhaluje, proč je provozní teplota pro funkčnost těchto systémů klíčová a prezentuje možnosti, jak ji regulovat. V závěru pojednává o možnostech snížení uhlíkové stopy a vyhovění nadcházející emisní normě EURO VII.
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Measurement of dielectric properties of liquid fuels for automotive power units
Redr, Martin ; Čech, Ondřej (referee) ; Chladil, Ladislav (advisor)
This bachelor thesis dealt with measuring of dielectric properties of propellants. The aim of the thesis was to find out differences between dielectric quantities of propellants from various manufacturers and in different proportions of refined to so-called bio-components. The theoretical physical principles of dielectric substances – permittivity and dissipation factor were described. In the thesis the most famous electrical insulation fluids whose dielectric characteristics are similar as propellants were mentioned. Furthermore, the study about dielectric properties of propellants and chosen fuels on the Czech market were mentioned. In the experimental part of the thesis, selected fuel samples at varying frequency and temperature were measured. These results were then evaluated and compared.
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