Development of tire pressure control system that can be automatically adjusted according to working conditions for tractors

In this study automatic tyre pressure control system has been developed for he tractors that had produced in our country, also have the similar in other countries, to keep slipping at a regular interval. This study aims to increase the efficiency of draft force at the field operations of the tractors that has maximum using phases by the tire control system that is being developed by operating, reduce the fuel consumption and decrease the negative traffic effects to the soil. The system consists of an electronic control unit, pneumatic control unit, user interface and a central control unit. It was integrated in a way compatible with each other during the operation of these subsystems and operation of overall system was made possible by this improved software. The system was designed according to operation types of the tractors with different agricultural tools and machines in the field. The tests of the tractors pneumatic control were performed in laboratories. In addition, in the first part the test is performed without usage of the equipments in the open road and after words the results are evaluate and improvement studies had been performed. Finally, field tests were carried out on the tractor by attaching the plow, subsoiling ploughs and disc harrow. After evaluating the results, it is found in the trials that operating of a tractor with more than %15 slipping causes increasement of losses and excessive power consumption. The system maintains the set valve of the slipping by evaluating the data received from each of the power wheel spin and increasing or decreasing the tire pressure according to this value during the field mode. The pressure control adopted by using a software developed by operating with accordance of the speed sensors, the tire pressure control sensors and pneumatic unit that have integrated in the system. At the end of the study, it is found that the average fuel saving is %7.6 for the plow usage, %6.3 for disc harrow usage and %5 for subsoil ploughs. In addition to these, %5 decrease in the fuel usage have been observed during the pulling of the agricultural equipments.