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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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Perspective bus powertrains
Kubík, Jan ; Maršálek, Ondřej (referee) ; Píštěk, Václav (advisor)
The aim of this thesis is to consider possible future development of alternative powertrains with regard to their use in buses. First described are the most promising alternative fuel vehicles, which use an internal combustion engine. The next part is evaluated ways to store energy using electric drives. At the end of the work is mentioned hybrid technology as a combination of previous drives.
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Analysis of connection and disconnection methods of the powertrain components of a hybrid vehicle
Kałuža, Vít Milan ; Řehák, Kamil (referee) ; Prokop, Aleš (advisor)
The bachelor thesis deals with component which is used for disconnection or connection of the drivetrain torque of hybrid electric vehicle. This component is used for disconnection or connection of an electric motor which is a part of independent secondary axis also called position P4. There are two clutch principles of this component, one-way ratchet clutch and dog clutch. Theoretical part of this thesis is focused on different concepts of hybrid car. There is also description of drivetrain systems with internal combustion engine and with electric motor. The thesis describes which forms of clutches are used in modern cars. Conceptual design consists of three problem solutions of the one-way clutch deactivation during electric motor toque transmission. The solution with a plate spring has been developed and implemented in order to provide torque limiter function of one-way clutch. In the structural design developed component is placed on the intermediate shaft which transmits torque from electric motor to differential. There has also been performed tooth adjustment of component’s hub to achieve functional concept which protects the one-way clutch from an overload or mechanical damage.
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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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Perspective bus powertrains
Kubík, Jan ; Maršálek, Ondřej (referee) ; Píštěk, Václav (advisor)
The aim of this thesis is to consider possible future development of alternative powertrains with regard to their use in buses. First described are the most promising alternative fuel vehicles, which use an internal combustion engine. The next part is evaluated ways to store energy using electric drives. At the end of the work is mentioned hybrid technology as a combination of previous drives.
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