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This diploma thesis consists of an overview of biofuel for diesel engines For each of biofuels is a detailed description of their specific characteristics, manufacturing process and the characteristics of their combustion or diesel engine modification. The experi-mental part focuses on the basic parameters of engines operating on diesel fuel mixed with diesel fuel and RME. Tested by internal combustion engines were two tractor tur-bo-charged diesel engines that were designed to run on diesel. Results achieved in the engine combustion of the fuels were then compared with each other and evaluated. As evaluated from experimental measurement results, it occurs when using as mixed fuel, and so as RME to contribute to the negative torque reduction, performance and increa-sed fuel consumption.

The dissertation is dedicated to the utilization of alternative propellants in transport with concentration in biofuel. Firstly, the theoretical part is focused on the technical aspects of their utilization. In addition, fuel characteristics, conditions and options of their applications in diesel-powered vehicle engines are there characterized. The influence on production of exhaust emission is also mentioned and legislation is briefly summed up there. Secondly, the practical part contents the measurement of basic parameters to the classic-powered engine and the biofuel-powered engine in a tractor Zetor Forterra 9641. The whole measurement is carried out in vehicle laboratories in the Department of Technology and Automobile Transport of Mendel University in Brno. Moreover a detailed elaboration and the final evaluation of the measurement results are included in the second part of the dissertation.

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This master work deals with different fuels for trucks Scania and it is divided into theoretical and practical parts. The theoretical part describes the basic concepts related to the topic. The most important are associated with transport and transportation, categorization and types of vehicles, greening road transport or financing. Depending on the practical part it is also place great emphasis on selected types of fuels, their production and also their advantages and disadvantages. In the practical part is introduced Scania company and the products and services that the company offers. Furthermore, this section generally analyzes Scania offer of engines for different types of fuels, including technical recommendations. At the end of the practical part are described specific vehicles, which are compared from financial aspect, in terms of environmental impact and operational limitations. The aim of the study is to compare Scania trucks using diesel, biodiesel and CNG.

This diploma thesis is engaged in considering of suitable technology for biodiesel production from used cooking oils. For the main parts of technology were made some mathematical models in a Chemcad programme. There was made a laboratory analysis of various samples of used cooking oil.

Thesis is concentrated on two biotechnologies: biofuels and genetically modified crops. Defines technical and economical characteristics, lists international agreements and czech and european legislation regarding both biotechnologies. Introduces opinions and analyses positions of selected political subjects as UNO, WTO, OECD, EU, catholic church and main czech political parties.

The objectives of this thesis is an overview of the available aviation fuel and possible alternatives. Evaluation of the applicability of alternative fuels in aviation. Furthermore, to assess the overall readiness of each technology across the aviation, from general aviation through public air transportation to transport helicopters. Evaluate the economic situation in each sector and determine the best alternative fuel option.

This thesis studies the relationship between the first generation biofuels and selected commodities and assets in the USA, Europe, and Brazil. It is the first attempt to combine the taxonomy and wavelet analyses in a single research application. Our unique dataset comprises 32 weekly price series covering the 2003--2015 time period. First, we employ a method of minimum spanning trees and hierarchical trees to model a biofuel-related price network. We demonstrate a development phase shift between Brazilian and the US/EU biofuel industries. We reveal a strong and stable connection between Brazilian ethanol and its main production factor, local sugarcane. We further find that US ethanol is closely linked to corn. In the contrary, European biodiesel exhibits only moderate ties to its production factors. Subsequent wavelet analysis scrutinizes the identified price connections both in time and frequency domains. Both Brazilian and US ethanols are found to be positively related to their respective feedstock commodities. In particular, feedstock proves to lead the price of the biofuel and not vice versa. Moreover, the dynamics remains qualitatively unchanged when controlled for the influence of crude oil.

The thesis discusses the use of biomass for electricity island operation. The first chapter explains the concept of biomass and its distribution. It also shows the potential and availability of biomass. The second chapter describes the transformation of biomass into a suitable fuel form. The third to fifth chapter describes the conversion of biomass as a fuel into electrical energy through combustion, Stirling and steam engine. In these chapters there are brought the following parameters and prices of these motors and single-phase and three-phase alternators that can be connected to these engines. Other chapters describe the production of electricity in line with consumption, where the cost per hour to run engines for the various types of fuel and price of the electricity produced in kilowatt hours is calculated. In the last chapter of the thesis there is described the possibility of accumulation of electrical energy.