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Effect of engine load on the output parameters of the tractor kits
Paulmichl, Roman ; Svída, David (referee) ; Bauer, František (advisor)
The thesis deals with the current situation in the construction of tractors, particularly engines and accessories. The work includes a methodology for measuring tractor rigs in traffic as well as methodology for plough/plow kits measuring. The measured values were tabulated, graphically presented and analysed. The thesis provides an overview of the issue of the combustion engine load placed on the engine by working conditions in transport, during primary soil tillage with different modes of operation of the tractor set. The thesis aim is to find out the practical effect of the engine load on the monitored parameters and to indicate possibilities for achieving higher efficiency in tractor units with minimum fuel performance
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Vliv zatížení motoru JOHN DEERE 8320R na výstupní parametry strojů na zpracování půdy
Liška, Martin
This thesis deals with construction of higher output tractors. The theoretic part is di-vided into three main parts. The first part of this thesis is about emissions of internal combustion engine and element of construction as are compression ignition engine and Common rail fuel injection. The second part is about constructions of undercarriage primarily about front axle of tractor. The last part deals with tractor hydraulic system and its control systems. The practical part of this thesis is about John Deere 8320 R. All measurements have been provided in agriculture operations with machines of Köckerling and Lemken in Zeas Polešovice a. s. The field measurements are divided into two parts of engine work. In the first part of work, the engine has the revolution 1500-1800 min-1, in the second part of work, the engine has the revolution 1800-2100 min-1. Fuel Consumption, total time, revolution, time for rotation, width and depth of the harrow were included. The measured values were calculated effective fuel consumption, opera-tional consumption, efficient performance, operational efficiency and working speed trains.
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Vliv konstrukce na užitné vlastnosti traktorů
Liška, Martin
The bachelor thesis deals with the tractor construction, namely with emissions of com-bustion engine, manual and hydromechanical transmissions and regulatory hydraulics. The first part of the bachelor thesis contains the introduction of engines, combustion engine's emissions, emission's regulations and standards and equipment for emission reduction. The second part describes hydromechanical transmissions and hydromecha-nical and tractor regulatory hydraulics. The third part contains the comparisons of group of tractors from 100 to 120 kW and the evaluation of particular groups.
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Effect of engine load on the output parameters of the tractor kits
Paulmichl, Roman ; Svída, David (referee) ; Bauer, František (advisor)
The thesis deals with the current situation in the construction of tractors, particularly engines and accessories. The work includes a methodology for measuring tractor rigs in traffic as well as methodology for plough/plow kits measuring. The measured values were tabulated, graphically presented and analysed. The thesis provides an overview of the issue of the combustion engine load placed on the engine by working conditions in transport, during primary soil tillage with different modes of operation of the tractor set. The thesis aim is to find out the practical effect of the engine load on the monitored parameters and to indicate possibilities for achieving higher efficiency in tractor units with minimum fuel performance
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Regulatory hydraulics of tractors and its practical use
DOLEŽAL, Jan
The work deals with the regulation hydraulics for tractors and its practical use. The theoretical part includes the construction of three-point hinges, variants of regulatory systems and the impact of regulatory systems on the use and transfer of power. The practical part deals with the use of hydraulic control in practical operation.
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Vliv připojení nesených strojů v tříbodovém závěsu na výstupní parametry traktorových souprav
Kopecký, Petr
In the literary part of the diploma thesis, a brief overview of the current state in the tractor design has been done, concentrating onto such elements that lead to lowering of fuel consumption. The practical part is based on the realized solution. The target of the measurement was to prove the influence of adjusting of the three-point hitch onto the output parameters of ploughing sets, consisting of the Zetor Forterra 140 HSX tractor and Kverneland 150 B mounted plough or Kverneland PN 100 semi-mounted plough. The essence of the measurement was gradual shortening of the upper linkage of the three-point hitch, whereas simultaneously with shortening of the linkage, the force on the linkage was rising. The force was measured by means of strain gauge Hotinger U2A. In case of the mounted plough it has been proved that shortening of the upper linkage causes rising of the force. That shifts part of the plough weight onto the rear wheels of the tractor, resulting in lower wheel slipping and lower fuel consumption.
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