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Operation of electric vehicles, hybrid vehicles and vehicles with an internal combustion engine
Herzog, Radim ; Píštěk, Václav (referee) ; Kučera, Ondřej (advisor)
This bachelor's thesis deals with the comparison of different propulsion concepts and their consumption, efficiency, and amount of emissions produced during operation. Although electric vehicles do not produce any local emissions, it is necessary to consider that emissions are generated during the production of electricity in power plants. The main part of the thesis introduces the functional principles of individual propulsion systems. Furthermore, it describes the formation of exhaust gas emissions in combustion engines and outlines their limits. Subsequently, the amount of emissions produced by a power plant for the operation of a specific example of an electric vehicle and a hybrid vehicle is calculated. Finally, a comparison of emissions production from representative examples of each propulsion system is illustrated.
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Trends in the development of hybrid vehicles
Ďurica, Matej ; Tobiáš, Martin (referee) ; Štětina, Josef (advisor)
This bachelor thesis is dedicated to make brief research in the hybrid automotive department, focused on the last ten years of development. The first part describes the categories of hybrid vehicles with an emphasis on the development of accumulators and related technology. An important part is the advantages and disadvantages of systems and drives. The second part deals with the future of hybrid drives, applications mainly in heavy industry, and the possibilities of changing "heavy" fossil fuels with "greener" alternatives. At the end of the work is the evaluation of the impact of the COVID crisis on the automotive industry.
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Comparison of Hybrid Powertrain Topologies in Daily Commuting Regime
Ušiak, Michal ; Štětina, Josef (referee) ; Vondrák, Adam (advisor)
The master’s thesis deals with modelling of various architectures of hybrid powertrains for three vehicle sizes in GT-SUITE and compares them in daily commuting operating mode. On top of making of the hybrid vehicle simulation models, control algorithms had to be created to manage the energy split between the internal combustion engine and the electric motor for each of the architectures. Routes to work and back were logged using the GPS and postprocessed to obtain the speed and the road grade profiles. Resulting data was used as an input in simulations of daily commuting. To compare all hybrid powertrain architectures, fuel economy and electricity consumption were evaluated for WLTP and daily commuting operating modes. Finally, the environmental impact of each topology was assessed based on an estimation of corresponding well-to-wheel emissions.
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Range extender of an electric vehicle
Jelínek, David ; Píštěk, Václav (referee) ; Drápal, Lubomír (advisor)
This thesis describes the design of a four-stroke engine with two cylinders, using as a range extender. The first chapter briefly introduces the company Škoda Auto a.s., for which the range extender was designed. Also, there is a list of the available electric and hybrid vehicles manufactured by this company. The next chapter deals with the division of hybrid vehicles, as an intermediate step for the use of electric vehicles, the reason for their use and the definition of advantages and disadvantages of hybrid vehicles. Also, the range extender technology is described here. The third chapter contains a description of the conceptual design of the range extender and describes the design and balancing of the crankshaft in more detail. The last chapter describes the calculation of the crankshaft dynamics and the individual parts load. The resulting crankshaft safety is determined by comparing the calculated values with a series-produced 1.0 MPI evo engine, which is the base of the described range extender.
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INSTALLATION REGENERATIVE EQUIPMENT INTO A VEHICLE
Svršek, Michal ; Kučera, Pavel (referee) ; Vopařil, Jan (advisor)
The aim of this bachelor thesis is to prepare an overview of current knowledge and trends in energy recovery system of motor vehicles. The content is primarily a function of basic system, components and recovery of kinetic and thermal energy. The next section deals with the built-in specific device in a vehicle with an evaluation in terms of economic and environmental returns.
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Engine Cycle Design for Plug-in Hybrid
Koutník, Štěpán ; Kudláček, Petr (referee) ; Novotný, Pavel (advisor)
The content of this thesis is analysis of energy flows of the propulsion system in plug-in hybrid utility vehicle. Theoretical part of the thesis deals with electrically assisted turbochargers, which can positively influence engine characteristics. The following part analyses given diesel engine and utility vehicle in simulations in GT-Suite software, with simulations being performed on WLTC driving cycle. The results of the simulations demonstrate the relation between the usage of electrical and fuel energies and the driving cycle and show the engine operation points. By using optimal battery capacity, it is possible to save according to driving cycle more than 50 % energy consumed by the engine, directly influencing the fuel consumption. The results are possible to use as a guidance for moving the engine operation points and for sizing of the battery pack of hybrid utility vehicle according to real life application.
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Electric and Hybrid Vehicles Analysis
Slaběňák, Patrik ; Kuchyňková, Hana (referee) ; Hájek, Vítězslav (advisor)
Nowadays, oil resources start to decrease, therefore it is necessary to think about alternative sources of energy. The result of this semester project is a basic overview of the current development of electric and hybrid cars, with potential application in normal operation and the proximity of their main characteristics, such as mileage, price and service when traveling. The energy required to operate the electric stored in batteries are recharged using the power stations, which is also devoted part of the work. The thesis focuses on the design and calculation of power consumption for a defined route of four-wheel electric wheelchair. The conclusion of the thesis deals with the future development of hybrid and electric vehicles, and with the expected trends in the field of power electronics and motors and with the propagation of hybrid vehicles to the customers.
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Influence of Powertrain Type on Vehicle Dynamics
Haniška, Jan ; Semela, Marek (referee) ; Bilík, Martin (advisor)
The aim of this master’s thesis is to assess the influence of the vehicle’s powertrain concept on its driving dynamics. The assessment is carried out with the help of data obtained during driving tests done with test vehicles. As a testing cars were choosen 3 Hyundais Kona with different powertrain types, classic internal combustion engine, a hybrid and a purely electric. Performed tests were the so-called moose test, acceleration, deceleration and it was measured center of gravity for all vehicles too. From the data obtained during individual tests, it was subsequently assessed the influence of the vehicle powertrain type on its driving dynamics.
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Unconventional range extender of an electric vehicle
Vysloužil, Marek ; Böhm, Michael (referee) ; Drápal, Lubomír (advisor)
This master´s thesis is dealing with the research of range extenders with internal combustion engine and the design of gasoline two-cylinder internal combustion engine with an unconventional parallel arrangement of crankshafts that meets mainly the requirements for low noise production and compact installation. It also describes the creation of a thermodynamic model and kinematic design using GT-Power. The computational part focuses on verifying the suitability of the chosen internal combustion engine concept used as range extender using advanced MBS methods.
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