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Automotive Gear Lever Design Improvement
Hajdušek, Zdeněk ; Porteš, Petr (referee) ; Ramík, Pavel (advisor)
Zdeněk Hajdušek Automotive Gear Lever Design Improvement BW, IAE, 2010, 59 pp., 75 fig. When designing improvement of the gear lever, solution of higher stiffness and lower mass in compare to the old design has been designed while keeping a necessary safety ratio. A new attachment of the gear lever to the car´s frame which increases lateral stability of the lever has been designed.
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Arrangement of Piston for BMW 2,5 TDS 4-stroke CI-engine
Rada, Lubomír ; Drápal, Lubomír (referee) ; Svída, David (advisor)
In this bechelor work presentation and design a four-stroke piston diesel engine with direct injection diesel by 130 kW, which is used in BMW vehicles. When choosing key dimensions come out of the original dimensions of the piston, used in diesel engine with indirect injection into the vortex chamber 105 kW of power. The draft of the main dimensions of the piston followed by strength calculation of the critical points of the piston.
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Piston Modification for Suzuki Swift 1,3 GTi 4-stroke SI-engine
Bastl, Ondřej ; Blaťák, Ondřej (referee) ; Svída, David (advisor)
This bachelor’s thesis is engaged in a piston modification of engine type G13B of vehicle Suzuki Swift 1.3 GTi. The aim of my work is to perform changes of some dimensions of the piston, while complying with some of the main dimension, to increase its stress resistance and the engine’s power. Strength calculation for the piston to last during the whole service life of the engine is an indispensable part of this work.
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Stress, strength and strain analysis of the crane truss construction.
Nedělka, Pavel ; Borák, Libor (referee) ; Vrbka, Jan (advisor)
This bachelor thesis deals with stress, strength and strain analysis of the plane crane truss construction. The aim of this work is the calculation of forces for the simple frame with the help of joint equilibrium equations. These forces will be modified by further construction treatment. This treatment turns the simply frame into the hyperstatic system. The obtained values data are the input data for the design of geometry of particular bars. The unknown dimensions will be determined by two strenght limit states. These limits are: limit state of elasticity and limit state of stability. Then we will make the strain analysis. It will determine the displacement in the action of the force, the effect of actual clearance as well as the brace failury effect to the construction safety. Further will be determined the influence of the weight of the construction to the strenght.
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Piston for 25 kW 2-stroke SI-engine
Bečka, Petr ; Dundálek, Radim (referee) ; Svída, David (advisor)
This bachelor thesis deals with a design of a piston for 25kW motorcycle engine. The work is focused to main dimension of piston, dimension of crank mechanism and strenght calculation of dangerous crosses. Piston would be able to work during common conditions of running.
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Piston for 147kW 4-stroke SI-engine
Hejda, Tomáš ; Svída, David (referee) ; Dundálek, Radim (advisor)
This bachelor’s thesis deals with the design of piston for 147 kW 4-stroke SI-engine, which is used in Octavie 2,0 TFSi RS. The work is focused to main dimensions of the piston, to make it able to work in difficult, temperature and strength conditions as exposed to in its lifetime. One of the most important part of design this piston is strength calculation.
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Safety factor evaluation for an out-of-plane frame under static loading
Málek, Michal ; Profant, Tomáš (referee) ; Burša, Jiří (advisor)
This bachelor thesis deals with evaluation of safety factor of a space frame when being statically loaded. This examination was demonstrated on a particular example. In order to solve the above mentioned, we exploit the frame symmetry. Unknown parameters were identified from deformation conditions in the point of intersection of the symmetry plane and the frame centreline, where the shift and two turning angles equal zero, and further by means of Maxwell- Mohr variant of Castigliano's theorem for determination of the frame deformation. The basis for calculations of stresses was represented by the theory of combined bar loading, particularly combination of bending and torsion. When examining the frame safety we took into consideration mainly dangerous points possibly occuring through cranks and fixed supports, where stress concentration occurs. The results of analytical solution were verified by numerical calculation in program ANSYS 10.0.
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Strain, stress and strength analysis of the frame construction.
Hrubý, Jaroslav ; Vlk, Miloš (referee) ; Vrbka, Jan (advisor)
This work deals with the stress and strain calculation as well as with the safety evaluation at the plane (2-D) frame loaded by the individual force F. The aim of this work is not acquiring the use of cutting-edge computer programs to determine the stress and deformation, but to learn how to use practically the basic calculation methods being taught at the subject Strength of materials to get practical experience with the application of these calculation methods.
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Two-speed gearbox
Kratěna, Jan ; Pokorný, Přemysl (referee) ; Ždímal, Pavel (advisor)
The objective of this work was to create the „Technical Documentation of Two-Speed Transmission“. The submission included a brief content of the demanded work. At first, calculations of gear ratio, tooth system dimensions and module were performed. Subsequently calculations of single tooth wheel loads and their safety were performed. After the tooth system calculation the shaft, bearings and key calculations followed. The Technical Documentation was completed with pictures and charts that illustrate the individual load points. A 3D model of the two-speed transmission inclusive detailed drawings of the individual shafts and tooth wheels were created as a part of the documentation as well.
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Conrod for 73 kW 4-stroke SI-engine
Blanár, Luboš ; Dundálek, Radim (referee) ; Svída, David (advisor)
This bachelor’s thesis deals with computational and constructional design of conrod for four-stroke four-cylinder SI- engine for passenger vehicle. It is necessary to establish main dimensions of the engine and crank mechanism for this project. Beside the design of the main parameters of conrod, a solidity verification on the critical cross-sections is performed which consists of verification of the conrod eye, verification of the conrod body and the conrod head. The part of calculations is also a review of present conrods for four- stroke engines and their development.
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