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The aim of this dessertation work was reaserch which included monitoring and evaluation of kits unable for collection and processing off vineyard cuttings for energy purposes. Based on the basic objective data entry were performed model calculations of operating cost of two different sets. One consisting of a tractor and the other being a cutting the wood catcher. At the same time , closely monitoring the performance of palletising lines , that have been experimentally used for the production of pallets from waste vine cuttings materials and two other materials such as raw pine saw dust and straw . The produced paletts were determinate by their main mechanical -physical properties including calorific value . The conclusion is that at the moment, as current model analysis shows ,the cost of pallet production is at the level of 1837,38kč.t-1.

The Diploma thesis is focused on the formation of commodity chain rapeseed on the common EU market. It reports the development of the supply side of rapeseed, rapeseed oil and biofuels on the world and european market. It identifies the main world and european production centers within those commodities. The development of prices in selected stages of commodity chain is analyzed by using the agricultural producer prices and stock prices. The analyses are based on the evaluation of statistical data. The results confirmed the growing significance of rapeseed and growing presence of biofuels.

Diploma thesis describes current fuels for gasoline engines in theoretical part. It de-scribes conventional fuels: gasoline, gaseous biofuels and liquid biofuels. This section talks about: familiarization with manufacturing, raw materials for production with their pros and cons. Fuels are comparing with one another in the tables. In a separate chapter is more about biofuel ethanol, which were measured in the practical part. The practical part describes the motor testing, dynamometer and engine on which measurements were made. On the engine we compared the effects of fuel (N95, E70 and E32) to power and torque, fuel consumption, exhaust gas temperature, engine effi-ciency and the energy supplied in the fuel. The results of monitored parameters are listed in tables and compared in graphs. The results show that ethanol has a positive effect on performance and engine torque. The negative impact of ethanol in the fuel is increased fuel consumption.

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The diploma thesis deals with the problematics of biofuels as a renewable source of energy in transportation, which has recently gotten under social spotlight. The theoretical part is focused on an explanation of basic terminology, historical development and especially reasons for the need to replace current fosil fuels with respect to an increasing volume of CO2 and shortening oil reserves. The practical part compares characteristics, use, pros and cons of the biofuels of the first and second generation and tries to estimate benefits of the biofuels of the second generation in both economic and environmental area.

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.

Diploma thesis: Analysis of the output parameters of the engine when running on biofu-el and diesel is based on the thesis: The issue of the use of biofuels in internal combus-tion engines. Alternative fuels are still in development and maintain about them much discussion, depending on the output parameters of the engine in terms of performance parameters and the effects of emission components of the exhaust gas for environmental protection. The content of the thesis is to develop research on the current state of the use of liquid biofuels. In the experimental part were analyzed variations in the measured parameters of a diesel engine at rated speed- characteristic in its entirety, emission char-acteristics and maximum measured motor parameters when running on fossil fuels and biofuels. Monitoring output parameters are power (Pe), torque (Mt) and specific fuel consumption (mp,e). Other monitored parameters emission components: hydrocarbons (HC), carbon dioxide (CO) and carbon monoxide (CO2).

The work deals with optimizing the operation of spark ignition internal combustion engine on fuel E85. The theoretical part is devoted to the issue of biofuels in terms of production, distribution and use in internal combustion engines. The experimental part is devoted to the design and verification of the additional control unit (ADU) which solves the optimisation of operation unmodified engine on E85. The first part of the experiment is dedicated to the design and construction of ADU with aim to faultless operation of the engine on E85. The second part of the experiment was devoted to optimisation of engine operation in terms of fuel consumption using dynamic changes of the injectors opening time. Part of the experiments was an evaluation of emissions production and impact on the performance parameters of the engine. The final part of the experiment evaluates the achieved results at the various settings strategy of ADU and compares them with results during engine operation on prescribed fuel N95. By the dynamic change of the injector opening time were reached decrease in fuel consumption by about 5%, reduction in CO production by around 70%, approximately fourfold increase in the production of NOx emissions and about 50% decrease in production of particulate matters.

The marketing research was made because firm Leitiger wanted to entry to the czech market. They need a complete research of wood pellets. There is made a political situation, analysis of the houses, analysis of the gas, analysis of the coal. Then there is a comperation of the fuels. The main part of this research is analysis of the competitors.