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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
191

Návrh řízení formulového vozidla s použitím kardanových kloubů / Design of Formula Car Steering System Using Cardan Joints

Hlaváč, František January 2019 (has links)
The aim of this master thesis is the construction of a steering system for Formula Student monopost. The main part of the thesis is the design and analysis of steering column using universal joints. The thesis also contains design and analysis of steering rack together with experimental measurement of steering column torsional stiffness. An important part of the thesis is also a calculation of steering forces.
192

Koncepce řadového zážehového motoru / Concept of an In-line Spark-ignition Engine

Kočvara, Antonín January 2020 (has links)
This thesis deals with comparison of straight four-cylinder petrol engine with a displacement of 1,5 litres and its three-cylinder alternative, which is based on a four-cylinder. The thesis starts with a research, where are examples of some currently manufactured engines. The research is followed by design of both engines, where the design of the crank mechanisms is made more in detail. After that, both crank mechanisms are subjected to dynamic analysis using FEM and MBS methods. The thesis ends with comparison of both engines in terms of crankshaft load, mass and dimensions.
193

Čtyřválcový řadový zážehový letecký motor / Four-cylinder in-line gasoline aircraft engine

Kučera, Ondřej January 2021 (has links)
The thesis deals with the structural design of a steel connecting rod for the aircraft engine Walter Mikron III, which is currently still manufactured and developed by company PARMA-TECHNIK, s.r.o. The proposed connecting rod would replace the current duralumin connecting rod. The work also contains a strength analysis of the designed component, in which it was aimed to verify the stress on the connecting rod, based on which the fatigue safety factor was performed. This is crucial for dynamically stressed parts of internal combustion engines. Furthermore, was investigated the effect of the change of the connecting rod on the torsional vibration of the crank mechanism. For this purpose, was built a discrete torsion model. The output of the whole work is the drawing documentation of the new connecting rod, meeting the requirements for application in an aircraft engine.
194

Modální vlastnosti klikového ústrojí čtyřválcového traktorového motoru / Modal Properties of 4-cylinder Tractor Engine Powertrain

Ehrenberger, Pavel January 2010 (has links)
This diploma thesis contains a summary of the general information about the torsion vibration of the crankshaft. The main task is to prepare a flexible model of the crankshaft in the FEM program ANSYS and the subsequent export into the MBS ADAMS / Engine. According to parameters the model of four-cylinder line tractor engine with flexible crankshaft is built. Crank mechanism is analyzed to determine the natural frequencies and natural modes. Finally the results are evaluated and compared with analytical calculations.
195

Koncepční návrh sportovního dvousedadlového vozu / Conceptual design of two-seat high performance car

Straka, Martin January 2010 (has links)
is diploma thesis deals with design concept of two-seater sports car with the main focus on chassis torsional stiffness and axle kinematics. The main idea started with some paper sketches which were later transferred to the 3D model with all the main parts (engine, differential, driver etc.) using CATIA V5 design program. Then the torsional stiffness was counted using FEM software ANSYS 12.0. Finally the axis geometry during bump/rebump movement of the wheel was simulated in MBS system ADAMS 2007.
196

Pětiválcový řadový vznětový motor / Five-cylinder in-line diesel engine

Parchański, Martin January 2010 (has links)
The purpose of this thesis is design of in-line a five-cylinder diesel engine arrangement with given main parameters, power train design, balancing centrifugal and inertia moments and calculation of torsion vibrations. The proposed engine must be based on four-cylinder diesel Zetor engine.
197

Viskózní tlumič torzních kmitů plynového vidlicového šestnáctiválce / Viscous torsional vibration damper of a gas V-sixteen engine

Říha, Stanislav January 2010 (has links)
Master’s thesis with title Viscous torsional vibration damper of a gas v-sixteen engine deals with torsion vibrafon of the crankshaft and chance how to eliminated it. First part of diploma thesis containes calculation of torsion vibrafon without damper. In second part is added damper. In the end of this thesis is equaiont made of both parts.
198

Pětiválcový řadový vznětový motor s vyvažovací jednotkou / Five-cylinder in-line diesel engine with balancing unit

Navrátil, Zdeněk January 2011 (has links)
his diploma work themed: Five-cylinder in-line Diesel engine with balancing unit is dealing with analysis of balancing possible alternatives of arranging crankshaft, analysis of arranging counterweight, concept of balancing shaft, engineering design of crank-shaft, calculation of frequency, computational control of crank-shaft in light of torsional oscillations and proposal of dynamic pendulum damper.
199

Viskózní tlumič torzních kmitů čtyřválcového vznětového motoru / Viscous type vibration damper of a four-cylinder diesel engine

Bůžek, Václav January 2011 (has links)
The point of the dissertation is to describe the design of powertrain of four-cylinder diesel engine equipped with vibration damper. After estimating the discreet model of powertrain, forced vibration calculation is performed to design appropriate vibration damper. The following part describes the safety factor solution of crankshaft fatigue using FEM. The dissertation provides a useful comparison for versions with and without damper. Crankshaft and viscous type vibration damper drawings are also included as appendices.
200

Pětiválcový řadový vznětový motor s viskózním tlumičem / Five-cylinder in-line diesel engine with viscous type damper

Procházka, Miloslav January 2012 (has links)
The aim of this diploma work is to design moving parts of the five cylinder inline diesel engine with given parameters, then to balance centrifugal forces and moments and design viscous torsional vibrations damper and calculate forced oscilations without the damper as well as with the damper. The designed parts are put to stress analyse by finite elements method. My design is based on similar construction of four cylinder engine Zetor.

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