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Design of semiactive rear damper for electrobikes
Uhlíř, Radim ; Růžička, Bronislav (referee) ; Strecker, Zbyněk (advisor)
When riding off-road motorcycle, the rider's comfort and the grip of the driven wheel are crucial factors. That is why efforts are constantly being made to develop better shock absorbers that provide better comfort and rideability. Semi-actively controlled magnetorheological dampers can provide a significant improvement in vibroisolation properties. The aim of this thesis was to design, manufacture and test a fast magnetorheological damper for the rear structure of the Kuberg Freerider off-road electric motorcycle. The design damping characteristics were based on those of the factory DNM Burner RCP-2S damper. The magnetic circuit of the damper was designed using magnetostatic FEM analysis and the time response of the piston group was verified using transient electromagnetic FEM analysis. Subsequently, structural analysis of selected parts was performed, and the damper was fabricated and tested. A function sample of the magnetorheological damper with a 240 mm pitch, 76 mm stroke, dynamic range of 9.1 at a piston velocity of 0.1 m/s and an average time response of 6.6 ms has been created.
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Conceptual design of the conversion of an electric motorcycle
Roman, David ; Zeizinger, Lukáš (referee) ; Böhm, Michael (advisor)
The work is about the study of the current offer of electric motorcycles, individual structural elements, and the concept of using an electric motor and battery. Furthermore, the work compares the operating costs of conventional internal combustion engines and electric motors. The main part of the work is the calculation of the battery capacity for the motorcycle, which is converted from a conventional internal combustion engine to an electric motor and the selection of a suitable engine and battery storage concept, so that the dynamics of the motorcycle is not significantly affected.
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Electric Powered Offroad Motorcycles
Kobza, Tomáš ; Šebela, Kamil (referee) ; Janoušek, Michal (advisor)
This thesis is focused on the study of off-road electric motorcycles, both currently available and prototypes under development. The work describes the history of electric motorcycles up to the present knowledge, construction issues, the types of drive units and batteries used. It compares an electric-powered motorcycle with a conventional-powered motorcycle.
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Conceptual design of the conversion of an electric motorcycle
Roman, David ; Zeizinger, Lukáš (referee) ; Böhm, Michael (advisor)
The work is about the study of the current offer of electric motorcycles, individual structural elements, and the concept of using an electric motor and battery. Furthermore, the work compares the operating costs of conventional internal combustion engines and electric motors. The main part of the work is the calculation of the battery capacity for the motorcycle, which is converted from a conventional internal combustion engine to an electric motor and the selection of a suitable engine and battery storage concept, so that the dynamics of the motorcycle is not significantly affected.
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Electric Powered Offroad Motorcycles
Kobza, Tomáš ; Šebela, Kamil (referee) ; Janoušek, Michal (advisor)
This thesis is focused on the study of off-road electric motorcycles, both currently available and prototypes under development. The work describes the history of electric motorcycles up to the present knowledge, construction issues, the types of drive units and batteries used. It compares an electric-powered motorcycle with a conventional-powered motorcycle.
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