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The thesis on the theme-Possibilities of reduction costs by tractors kit for treatment of soil-is giving us in the theoretic part basic information about construction of nowadays tractors, possibilities its traction and effectiveness of use. It deals with economy of treatment of soil primarily with energy demands and effectiveness tillage. In the practical part of this thesis is processed field measurements, which was made for purpose to evaluate usage of traction hydraulic cylinder plough. It was investigated how the features of traction cylinder are influencing fuel consumption, traction of wheel and efficiency of tractors kit.

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The dissertation thesis "Design of the Information System of Tractor with Interactive Control by HMI" focuses on the theory of ergonomics of the agricultural tractor cab in the context of the coexistence of standard tactile controls and innovative solutions with touch screen support. The thesis illustratively presents on model examples how an extensive set of information from different disciplines is necessary to meet the goal of synergy of anthropometric or biomechanical properties of the operator and working environment and conditions. This chapter introduces the next section, which details the integration of HMI in the tractor cab. Again, type solutions are demonstrated and there is created a knowledge base on the individual conceptual approaches of the manufacturers. The synthesis of information from the theoretical part of the thesis is projected into its experimental part, whose nature is mainly developmental and purpose-built within the project for the producers of Zetor Tractors, a.s. At first, there are defined solution attributes from various points of view, from which the design and implementation of hardware and software parts is coming out. The physical design of the terminal was carried out in a prototype solution by printing from a thermoplastic polymer. The chapter about terminal software also describes a solution that considers the chosen concept of the information system that is a part of mentioned project. Terminal will run Linux operating system and will work as a web services client. This chapter contains source code fragments to illustrate the selected concept. Due to the scope of the project and the focus of the work, certain parts of the technical solution are only outlined, but the description clearly shows the close connection between the development of the terminal and the central tractor system. It follows from the foregoing that simply verifying the functionality of the terminal is not sufficient for the experiment itself, therefore the whole prototype solution was tested for a specific task in the field of the hydraulic system of the tractor. In contrast to a conventional hydraulic regulator solution, attention was paid to the fuzzy regulator in this study, and the results of the experiment are listed in the relevant chapter. The conclusion of the thesis then focuses on the development of the system and its capabilities in the concept of Agriculture 4.0.

The thesis titled Factors influencing the energy and performance parameters of machine lines for soil cultivation in the theoretical part contains a research about current situation in the construction tractors. The research focuses on the structurally most important parts of tractors (motors and gearboxes) and further discusses the selected components. In the practical part there is described a measurement under field conditions with selected machine line for soil cultivation. Field measurement were carried out on the estates of Cooperative Farm Hodíškov, ploughing machine line consisted of Case Puma 210 tractor with a Lemken Diamant plough. During the measurements tractor was working in two modes of engine load (from 1700 to 1900 rpm and from 1900 to 2100 rpm), the energy and performance parameters were examined for each measurement. The lowest fuel consumption and highest efficiency was achieved while working in the economic speed range from 1700 to 1900 rpm.

The thesis deals with the appropriateness of using two different combinations of harvester´s system for stand tending. The aim was to quantify differences using harvester´s system and found out which is more appropriate for intervention. The difference in the number of felling trees is using as key parameter. According to results is better for future development of stand using harvester´s which will create closer segmenting lines. The rest of trees in stand mean greater possibility of selection for subsequent thinning and higher possibility of yield in other interventions due to greater volume.

The agricultural sector is currently highly dependent on fossil fuels, with diesel being most prominent. There are however both historical and modern alternatives that have not been subject to enough evaluation to disregard them as suitable alternative. This report aims to theoretically investigate the feasibility of converting a conventional diesel driven tractor to run on electricity, delivered via a cable connected to either the main power grid or on-site electric production, such as photovoltaic. Delivering electricity to the machine via a cable is a method with historical roots in the early 20th century and in the present day mining industry. The economic and technological potential of the technique are evaluated, along with the examination of several different motor powers, voltages, losses and construction ideas. The report finds the technique to be both possible as well as long term economically and environmentally beneficial. To realise this method however, some deviations from the present methods of agricultural farming must be made, considering the more advanced driving patterns, the limited mobility and the requirement for extra driver awareness. Furthermore, this study finds further research in this field necessary, and the construction of a functional prototype highly desirable.

This work aims to analyse tractors operational data related to works they performed. Grass silage harvest and potato planting were analysed in detail. Evaluation was based on information acquired from the telematics systems, which were installed in the machines. The systems functions were also introduced, its potentials were described and they were compared to each other. Telematics systems marketing communication strategy was also prepared.

The thesis deals with the analysis and comparison of the braking distance and the braking deceleration of the tractor Zetor Forterra 12441 and the towed trailer BSS 10 in relation to its load. For a complex analysis, the measurement of air pressure in front of and behind the load air pressure regulator of the trailer was performed during the brake tests as well. The work also includes a description of the current vehicle braking systems, methods of performing brake testing and legislative requirements on brake testing. There is also the methodology of comparative tests themselves and their specifications described in the thesis. The values achieved by the measurement are confronted both with the legislative regulations valid until the end of 2015 and the regulation newly valid from 1st January 2016. The analysis of the measured values shows that the braking distance of the set is lengthening with increasing the weight of the trailer load.

The aim of the thesis was to prepare a list of structures, used in tractors, with a focus on the chassis and axle types.Another point was to characterize the methodology for measuring the tensile properties of the concrete surface, which carries out the state testing laboratory in Nebraska.Further develop methodologies terrain measurement of tensile properties.After this, tabular and graphical data obtained from the state testing laboratory, which concerned wheeled and caterpillar tractor Challenger, where the issue of tensile properties was solved, have been processed. The terrain measurements on the stubble were chosen two tractors John Deere 8320R wheeled and caterpillar 8320RT. The measurement was focused on differences in tensile properties depending on the kind of the tractor chassis. From the analysis of the measured values shows that the caterpillar tractor has higher values of tensile properties in the measurement of on the concrete surface and on the stubble. The difference is caused by different contact surface of the chassis unit. On soft stubble there are differences in tensile properties pronounced because of deformation of the base. It is proven that we can achieve higher efficiencies of work with tracked tractor and with the fact lower fuel consumption because of better transmission of engine power.