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Electronic Ignition Unit for Combustion Engine
Čmelík, Matouš ; Knobloch, Jan (referee) ; Červinka, Dalibor (advisor)
Thesis deals with electronic ignition for a two-cylinder two-stroke engines. In the thesis is described the existing ignition system. In the thesis are described measurement options of the position ot the engine crankshaft. The ignition system is designed mainly for motor JAWA, CZ and motor Trabant. The design is focused on reliability of entire circuit. The main advantage of the entire proposed design is possibility to adjustable ignition curve, depending on several external parameters such as speed or temperature of the engine. The proposed ignition has been tested in vehicle Velorex.
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Jawa 50 performance improvement
Horák, Jiří ; Prokop, Aleš (referee) ; Janoušek, Michal (advisor)
The bachelor thesis is focused on increasing the performance of Jawa Babetta type 225 moped engine. The first part of the bachelor thesis describes the principle of a two - stroke combustion engine and the possibility of its distribution. The next part is dedicated to the modification, which was done experimentally according to information from available literature. The thesis contains a comparison of the results of the serial and modified engine measurements.
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Design of conventional motorcycle swingarm made from aluminum alloy
Adlof, Michal ; Tobiáš, Martin (referee) ; Zháňal, Lubor (advisor)
This bachelor thesis deals with the proposal of the swingarm from aluminium alloys. The theoretical part is devoted to a closer description of the swingarm. Here, the older ways of wheel deposition are described, followed by a comparison of the four basic variations of the swinging forks. The practical part of the thesis is then focused on the design overhaul of the steel swingarm. In the next part, the calculations of forces and stress analysis are presented. Subsequently, the original steel and redesigned aluminium swingarm are compared. And finally, the complete drawing documentation needed for the production can be found in the annex.
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Stress-strain analysis of the motorcycle frame
Adlof, Michal ; Zháňal, Lubor (referee) ; Dlugoš, Jozef (advisor)
The diploma thesis is focused on the stress-strain analysis of a motorcycle frame, in which two variants of the structure are checked and compared. The first part of the work is devoted to the analysis of individual driving conditions and the calculation of their load. The second part deals with strength analysis, which is used to determine the safety of frames. Based on the results of strength analyzes, the innovated frame is evaluated, and structural modifications are recommended to increase the rigidity and safety of the structure. In conclusion, the whole diploma thesis is summarized and evaluated. This work was created in cooperation with Jawa Moto spol. s r.o., which provided the necessary documents.
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Production technology for an ignition stator body of the Jawa Pionýr motorcycle
Zeman, Petr ; Dvořák, Jaromír (referee) ; Sliwková, Petra (advisor)
The Jawa 50 motorcycles, produced in several models between 1958 and 1982, were equipped with several types of ignitions. From the current point of view, they are not satisfactory. The bachelor´s thesis describes the original designs, the commercial and amateur modifications of the ignition and its advantages and disadvantages, and deals with the innovative design and variants of mounting by individual coils. The work further deals with production of the ignition body by choosing a semi-finished product, machines and tools and compilation of a technological procedure and drawing documentation.
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Stress-strain analysis of the motorcycle frame
Adlof, Michal ; Zháňal, Lubor (referee) ; Dlugoš, Jozef (advisor)
The diploma thesis is focused on the stress-strain analysis of a motorcycle frame, in which two variants of the structure are checked and compared. The first part of the work is devoted to the analysis of individual driving conditions and the calculation of their load. The second part deals with strength analysis, which is used to determine the safety of frames. Based on the results of strength analyzes, the innovated frame is evaluated, and structural modifications are recommended to increase the rigidity and safety of the structure. In conclusion, the whole diploma thesis is summarized and evaluated. This work was created in cooperation with Jawa Moto spol. s r.o., which provided the necessary documents.
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Jawa - history of the brand
Minařík, Miloš ; Kopecký, Ladislav (advisor) ; Halada, Jan (referee)
The Bachelor's thesis monitors the conception, history and operation of the most successful domestic motorcycle manufacturer - trademark Jawa. The thesis generally deals with the functioning of the company in different political-economical systems that has gone through during 83 years of operation and describes the changes of position and perception of brand value in time. The thesis is focusing on the extraordinary personal and professional career of founder of Jawa Company Ing. Dr. h.c. František Janeček. As well as on the enterpreneurial philosophy of his company and style the company worked the way up to become a leader of the domestic motorcycle market, which enabled the company to gain good position in the most successful era of postwar epoch. The great amount of attention is focused on the years of 30th, when Jawa starts its work and the process of brand building. This process is presented in the complex framework that explains and comments, but also monitors the entire system of branding methods, which supported the production strategies of Jawa and led to the successful building of a brand value. In this sense, the thesis takes particular notice of organizational processes in the company, changes in its portfolio and promotion of company products. The communication and activities of the...
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JAWA factory in Týnec nad Sázavou at the time of socialist experiment - Factory, people and motorcycles at the time of so-called nationalization and economic transformation (1968 - 1995)
Bárta, Karel ; Franc, Martin (advisor) ; Houda, Přemysl (referee)
The purpose of this disertation is to capture the era of so-called normalisation during the 1970s and 1980s of the 20th century in Czechoslovakia. Even though the economic transformation in the 1990s is covered, the normalisation is in this case the primary investigated period. The main focus is on the largest producer and exporter of czechoslovak motorcycles - a company called JAWA with the main production plant located in Tynec nad Sazavou - Brodce. In addition to the motorcycle production in Tynec nad Sazavou the work looks at Czechoslovakia and its role as a power of the motorcycle sport during socialism and other aspects such as the role of motorcycles during the normalisation period in Czechoslovakia or the outline of the historical development of JAWA in the post-war years and its growth on the international scale before nationalization of the enterprise. The disertation also covers other aspects during the researched era such as the impact of the factory on the lives of the citizens and employees in the region, relations to the company and the brand JAWA or researching economical situation of the factory during the normalisation period and economical transformation. The main resources used for this work were interviews with current and previous employees of JAWA in Tynec nad Sazavou, who...
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Symbolism and visual rhetoric of the Borobudur temple in the context of modern era
Pyšová, Michaela ; Petrů, Tomáš (advisor) ; Pokorný, Ondřej (referee)
Michaela Pyšová 2016 SYMBOLISM AND VISUAL RHETORIC OF THE JAVANESE BUDDHIST TEMPLE BOROBUDUR bachelor thesis Abstract The bachelor thesis deals with the Javanese Buddhist monument Borobudur, which is due to its unique architectural form and the symbolic value of the tangible important part of Indonesian and World Heritage Site. The building is a symbol of Buddhist cosmology and is used by the monks in its original ritual context even today. Javanese mentality evolved according to the transformation of religious and philosophical doctrines and changes over the centuries, similarly understanding the message of the monument by islamized contemporary society. Introduction of thesis defines cultural-historical context of Borobudur during the period ranging from the beginnings of Buddhism in India through dissemination of buddhist teachings in the Indonesian archipelago and its mingling with the local faith. The next part of thesis refers to the architecture of the monument, reliefs and message of the importance of overlapping structures into modern times. The goal of the analysis is primarily analysis of Javanese temple architecture as an ideological system that expresses the philosophical values of Buddhist culture spilling over into modern times.
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