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BMW Eight-cylinder Vee-type Engines
Domský, Viktor ; Janoušek, Michal (referee) ; Drápal, Lubomír (advisor)
This bachelor’s thesis incorporates development of BMW Vee-type eight cylinder engines, made for normal, sports and race cars. In the first part there is history of BMW company and effect of legislation of the day, engine technology and their labelling. In the second part there is overview of engine development in chronological order. Interesting technical solutions, power output and applications are mentioned in engines part. Chosen engines are comprised with competition of the day.
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Application of plain bearings for four-stroke internal combustion engines
Šedo, Matej ; Janoušek, Michal (referee) ; Drápal, Lubomír (advisor)
Subject of this thesis are plain bearings and especially their application for four-stroke internal combustion engines. Thesis is divided into two main parts. The first part provides a basic description of plain bearings, their distribution and evolution. It also discusses their materials and the theory of hydrodynamic lubrication. The second part covers concept of sliding bearings in internal combustion engines and their load associated with the election of right material. It also includes description of particular application of plain bearings and the method of oil distribution. It handles the mounting of crankshaft and camshaft, piston pin, connecting rod and other places where sleeve bearings are use.
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Variable Valvetrain Systems
Věříš, Michal ; Janoušek, Michal (referee) ; Drápal, Lubomír (advisor)
This bachelor thesis focuses on the variable valve actuation systems and their influence mainly on spark-ignition engines. Describes the principle of their function, comparison of each other, brief history and a view to future developments. Part of the work is also a simulation of VTEC-E.
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Acoustic Holography
Vacula, Jan ; Janoušek, Michal (referee) ; Prokop, Aleš (advisor)
This bachelor´s thesis is focused on description and process during contactless identification of sound source for near and far field. Principles of individual methods of acoustic holography are relatively shortly described and for details of this problem (on the level of algorithm of software equipment) you can see the references below thesis, which were the basic theory of my study. The introduction was conceived like description of “acoustics world”. You can find the basic information and principles about sound propagation in space and their mathematical contain at time. For this it was essential to define quantity and their units. Subsequently there is inventory of used sensors and their own construction for this measurement. Next chapter point to some techniques of acoustic holography used in practice. It includes mainly a method NAH (Nearfield Acoustical Holography) and SONAH (Statistically Optimised Nearfield Acoustical Holography) used for near-field. For reconstruction of far-field is shown principle of a method of Beamforming and manual measurement by intensity probe. The ending is focused on a concrete application these methods on combustion engines of cars.
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Measurement and Evaluation Methods of Powertrain Vibrations
Vítek, Michal ; Janoušek, Michal (referee) ; Prokop, Aleš (advisor)
This bachelor´s thesis deals with the methods of measurement and evaluation of powertrain vibrations. Introduction of this work is defining the basic parameters of vibration. It also shows the experimental modal analysis, vibration excitation methods and measuring responses to a given excitation. The last part is operational modal analysis and its comparison with experimental modal analysis.
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Noise Reduction Methods in Automotive Design
Kubica, Petr ; Janoušek, Michal (referee) ; Prokop, Aleš (advisor)
The aim of this bachelor thesis is create a research study about noise reduction methods in automotive design. The introduction of this work deals with acoustic and the influence of noise on people. Furthermore it deals with ways of noise creation in a car and its suppression. In the end of this work there is a valorization of certain methods at noise suppression of a personal vehicle.
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Eccentric Cranktrain
Kóňa, Marián ; Janoušek, Michal (referee) ; Drápal, Lubomír (advisor)
This thesis is focused on design of four-stroke engine eccentric cranktrain. The thesis includes kinematic analysis of mechanism. The main attention is paid to examination of dynamic variables which burden piston skirt. Result of the thesis is designed eccentricity value of mechanism to reduce piston skirt stress.
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Injection Systems of Commercial Vehicles
Cajzl, Štěpán ; Janoušek, Michal (referee) ; Dundálek, Radim (advisor)
This thesis summarizes information about injection systems used in commercial vehicles. Includes an overview of different types of injection systems, their differences in structure, function description and their pros and cons. The following is a list of the world's leading automobile manufacturers of commercial vehicles, indicating the injection system on the engines. Finally, a comparison of different systems.
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Uncoventional Valve Control
Janoušek, Michal ; Svída, David (referee) ; Dundálek, Radim (advisor)
This bachelor thesis describes some non-traditional systems of valve control in four-stroke in four-stroke engine. The first part is about basic valve train arrangement and their use. Further work continues the basic description of selected non-traditional systems of control valves, these are the systems used both in ordinary mass-production, and the racing sport. The thesis included a brief historical development of individual systems and their application in practice use.
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