Modeling of agricultural tractors maintenance for innovative forecasting of technological effectiveness at the stage of designing

At the stage of design, technological effectiveness of tractor during maintenance predicted based on its operating parameters, taking into account the effective power of engine, the mass of the tractor, the productivity of tractor and other indicators. However, this method does not allow fully predict the operation and maintenance effectiveness of domestic agricultural tractors at the design stage. According to the outline drawings, the number of maintenance operations of the designed new tractor is determined. For example, the washing and cleaning operations must be 30. In this case, the time-consumption for their implementation at TM-1, TM-2 and TM-3, using the above-developed mathematical calculations will be 0.16, 0.47 and 0.73 man per hour respectively. Thus, it is possible to calculate the time-consumption of all types of work during the maintenance, and by summarizing their indicators, we can obtain the time-consumption of full cycle. Dividing this value by the number of the cycles of the new designed tractor (usually this number is 1000 moto-hours), we can find the specific value of total time-consumption for maintenance work.