A content of this diploma thesis is construction design of torsional vibration rubber damper of four-stroke diesel supercharged engine. It` s realized evaluation of crankshaft from aspect of torsional vibrations and checked mechanical stress of crankshaft without using rubber damper. Consequently basic parameters of rubber damper are specified, then checked mechanical stress of crankshaft and designed own construction design of damper.

The thesis disserts upon computational modelling of valve train mechanical losses, finding the appropriate method of solving and its application on valve gear in Diesel in-line four-cylinder engine. The thesis further disserts upon proposition of appropriate adjustments leading to the reduction of mechanical losses. The calculation was performed in MBS software ADAMS.

This thesis describes the design of single-cylinder four-stroke racing motorcycle with a displacement of 450 cm3. The introduction describes the MX1 class motorcycle engines design and basic parameters of the designed engine. This is followed by comparing construction of crank mechanism parts meeting strength calculations with components of contemporary racing engines. The next section describes the design of the timing mechanism, balance shaft, cylinder head, engine cylinder, gearbox shaft location and crankcase lubrication and cooling system.

Tato diplomová práce se věnuje výrobě vrstev grafitu/grafenu a meření jejich transportních vlastností v závislosti na relativní vlhkosti. Grafenové šupinky byly nanášeny pomocí mechanického odlupování . Pro kontaktování grafenových šupinek byla využita elektronová litografie a na pozorování byly využity optická mikroskopie, mikroskopie atomárních sil a elektronová mikroskopie. V práci jsou popsány jednotlivé kroky výroby, analýzy a měření transportních vlastností nanesených grafenových šupinek.

The aim of this thesis is design of one cylinder engine, with stroke volume 250ccm, for a Moto3 category racing motorbike. At the begin the thesis describes rules for engine design for Moto3 racing motorbike category and gives a summary about current technologies in engine design and motorcycle development. Another part describes construction features of engine design, completed with crank shaft analysis using the LSA method.

Predmetom tejto diplomovej práce je design elektrického štvorkolesového vysokozdvižného vozíka zameraný na inovatívny prístup k návrhu s technickými, estetickými, ergonomickými a ekologickými požiadavkami. Cieľom designu je navrhnúť koncepciu inovatívneho stroja, ktorý bude charakteristický vysokou estetickou kvalitou. Vysokozdvižné vozíky sú spravidla hodnotené z pohľadu ich základných charakteristík, ktorými sú kompaktnosť, manévrovateľnosť, výška zdvihu, stabilita a nosnosť

Dissertation is project of four-floor free-time center with basement, situated in Havířov-Město. Building is used for art lessons, drama class, ceramic class and natural science class. In basement are situated four parking places, utility room, mechanical room, boiler room, furniture storage room, workshop with sanitary facilities for maintenance man and bicycle room. In ground floor is situated administrative facility of building- headmaster’s office, headmaster’s assistant’s office, guidance counsellor’s office, conference room and kitchen. Then there are sanitary facilities for employees and visitors, reception and waiting room for children and parents. In first floor are classrooms for art and ceramic lessons with storage room, sanitary facilities and office for teachers. Second floor consists of halls for drama classes with storage rooms, office for teachers, dressing rooms and sanitary facilities. In third floor are classrooms for natural science lessons, storage rooms, office for teachers and terrace. Floors are connected through two stairways, one with three stair flights and elevator, second with two stair flights. Building has flat roof. Project was completed using ArchiCAD software. The emphasis was put on correct disposition and architectural resolution and safe using of building.

Une étude expérimentale de l'influence des mélanges gazeux sur le régime de combustion sans flamme a été menée sur l'installation pilote du CORIA, en collaboration avec GDF SUEZ. La première partie de cette étude a été consacrée à la caractérisation détaillée de ce régime de combustion particulier au méthane pur avec et sans préchauffage de l'air comburant. Des mesures locales de température et concentrations d'espèces stables ont été réalisées à l'aide de thermocouples à fil fin et sonde de prélèvement. Une attention particulière a aussi été portée au développement et l'adaptation de techniques d'imagerie sur ce type de four : l'imagerie de chimiluminescence OH* pour la visualisation des zones de réaction et la PIV endoscopique afin d'obtenir des champs de vitesse de grandes dimensions malgré le fort confinement à haute température. L'analyse des résultats obtenus a permis de mettre en évidence le rôle principal de l'aérodynamique des jets turbulents de réactifs dans le four assurant l'obtention et la stabilisation de ce régime de combustion massivement diluée. Dans la seconde partie de cette étude, la faisabilité de l'utilisation d'hydrogène dans un four pilote fonctionnant en régime de combustion sans flamme a été démontrée. On retrouve toutes les caractéristiques intrinsèques à ce régime de combustion en termes de forte efficacité énergétique (lors du préchauffage de l'air) et très faibles émissions polluantes (CO et NOx) de ce régime massivement dilué, associé à la réduction des émissions de CO2 avec l'augmentation de la teneur en hydrogène dans le combustible. En fonctionnement à l'hydrogène pur et sans préchauffage de l?air, le four n?émet plus aucune espèce carbonée et quasiment pas de NOx ; on se rapproche d'un four à "zéro émission". / An experimental study of the influence of the aerodynamic mixing on flameless combustion regime has been carried out on the CORIA lab-scale facility with the collaboration of GDF SUEZ. A detailed characterisation of this innovating combustion mode, using pure methane as fuel, with and without air preheating is the first part of this study. Temperature and stable species concentrations measurements have been performed with fine wire thermocouple and sampling probe. Imaging techniques have been developed and adapted for in-furnace measurements: OH* chemiluminescence imaging for reaction zone visualization and endoscopic PIV in order to obtain large dimensions velocity fields in spite of the confinement. The results enable us to put in evidence the leading role of aerodynamic of the turbulent jets to ensure the stabilisation of this massive diluted combustion regime. The second part of this study concerns the use of hydrogen as fuel in the pilot furnace operating in flameless combustion regime. The main characteristics of this combustion regime have been found again: high efficiency and very low pollutant emissions (CO and NOx) associated to CO2 emissions reduction while increasing content of hydrogen in the fuel. With pure hydrogen and without air preheating, the furnace produces no carbon-species and nearly no NOx, condition close to a “zero-emission” furnace.

Ett väl fungerande transportsystem är en grundläggande förutsättning för alla i samhället. Planering av transportsystemet och dess utveckling måste ta hänsyn till behov och krav som ställs för beslutsfattare. Det är en utmaning att ta fram förbättringsåtgärder på ett effektivt och långsiktigt hållbart sätt. Att ha ett väl fungerande transportsystem i ett inhägnat industriområde är inget undantag. Det är viktigt att följa de allmänna trafikreglerna för att alla som rör sig i arbetsområdet ska kunna utföra sitt dagliga arbete under säkra trafikförhållanden. Det här examensarbetet är utfört som en trafikstudie av Scania Tekniskt Centrums industriområde. Målet med föreliggande arbetet är: Kartlägga trafiksituation i Scania Tekniskt Centrums industriområde för öka förståelse om områdets karaktär och problem som existerar. Belysa vilka effekter på transportsystem framtida exploateringar kan medföra. Identifiera tänkbara åtgärder som kan förbättra dagens trafiksituation med hänsyn till en säker och hållbar trafikmiljö.  För att uppnå ovanstående målsättningar har en litteraturstudie, inventering i form av faktainsamling och intervjuer samt en åtgärdsanalys genomförts. Det som framkom i studien var att Scania Tekniskt Centrum är lokaliserat inom en mycket begränsad yta som är uppdelad till olika användningsområden i verksamheten. Detta resulterar i en blandning av trafikslag från tunga fordon till gångtrafikanter som korsar varandra och skapar konfliktpunkter och riskkällor i området. Efter genomförda studier har följande resultat kunnat dras. Det visade sig att ett av de största problemen som orsakar konflikter i området är otillåtna gångtrafikanter som vistas inom området där de inte har att göra. Därför har olika åtgärder förslagits för att lösa detta problem. Åtgärdsanalysen grundades på Trafikverkets fyrstegprincip och Mobility Management som är de allmänna tillvägagångssätt för hållbara åtgärder inom transportsystem. Examensarbetet ska använda som stöd och underlag mot långsiktigt planering för att uppnå en säker och hållbar trafikmiljö inom Scania Tekniskt Centrum och liknande område.  För fortsatta studier behövs en avvägning av olika åtgärd avseende på tillgängliga resurser och målkonflikter i verksamheten. / An efficient transportation system is a fundamental condition for all in a society. Planning the transport system and its development must take into account of needs and demands to decision makers. It is a challenge to produce improvement in an efficient and sustainable way. To have an efficient transport system in a fenced industrial area is no exception. It is important to follow the general traffic rules for everybody that move in the work area to perform their daily work under safe traffic conditions. This thesis is conducted as a traffic study of Scania Technical Centre's industrial area. The aims of the present work are: Identify traffic situation in Scania Technical Centre's industrial area for increasing the understanding of the area's character and problems that exist. Emphasizing the impact on transportation that future expansions can imply. Identify possible actions that could improve the current traffic situation with regard to the safe and sustainable traffic environment. Literature study, research inventory, interviews and analysis of measure were done to achieve the above objectives. The results show that Scania Technical Centre is located in a very limited area that is divided into different uses in its operations. This results to a combination of transport types from heavy vehicles to pedestrians who are crossing each other, creating conflict points and dangers in the area. After studies the following results have been gained. It turned out that one of the biggest problems that cause conflicts in the area is prohibited pedestrians within the place where they do not belong. Therefore, various measures have been proposed to solve this problem. Solution analysis was based on the Swedish Transport Administration’s four stage principle and Mobility Management which are the general method for sustainable actions in transportation system. The thesis will be used as support material to achieve a sustainable and safe traffic environment in Scania Technical Centre and similar area. A balance of action in terms of available resources and conflicting goals of the business is needed to be done for further studies.

Title: Comparison of Special Breathing Exercises versus Specialized Physiotherapeutic Interventions for Static Apnea Objectives: The aim of this diploma thesis is to look deeper into the issue of improving performance in static apnea, one of the competitive disciplines of freediving and compare its training with 1) special breathing exercises for divers (Mana, 2018) and 2) physiotherapeutic intevrentions based on working with the diaphragm and deep stabilization system of the spine (Kolář, 2009). The aim was to find out which group achieved a more effective result and what is the overall diference between the training result of both groups in terms of posture quality and performance in static apnea. Methods: The experiment involved 14 healthy people, men and women, aged 19-23 years old. The experiment consisted of three parts: 1) Initial measurement of static apnea and examination of four tests to determine the quality of one's postural muscles, 2) four-week lasting training according to the division into groups (breathing exercises for divers or training based on physiotherapy intervention), 3) final measurement of static apnea and re-examination of posture tests. The obtained data were recorded and processed. Results: It appeared that due to the small amount of statistically signifiant data and...