RATIONAL LEVELS OF DEAD WEIGHT LOADING OF WHEELED 4K4A TRACTORS MADE IN CHINA

The research goal is to substantiate rational levels of dead weight loading of 4k4a wheeled tractors Lovol and Agroapollo on tillage operations of different energy intensity. The practice of operation of Chinese tractors of the specified models with a nominal power of 60–102 kW with an operating weight adjustable in the range of 18–24% representing the basis (59%) for updating the fleet of agricultural commodity producers in the Krasnoyarsk Region shows that the lack of specific recommendations from official dealers on their adaptation to operating tillage technologies of different energy intensity leads to a significant decrease in the level of realization of potential opportunities and increase in fuel costs due to improper dead weight loading. The main adapter parameters of the tractor for the technological process were as following: the reference specific mass referred to a unit of realized engine power in the nominal traction-speed mode and the abscissa of the center of mass. To assess the degree to which the potential capabilities of the tractor are realized, a complex index of the technological level was used. According to the conditions for realizing potential opportunities, the specified models of tractors of different series of basic configuration and on dual rear wheels presented on the regional market should be used: with full dead load corresponding to the operating mass at moldboard plowing and deep soil loosening with mounted plows in the speed range of 7.3–10.0 km h; with minimal dead weight loading at non-moldboard and surface combined tillage in the interval 10.0–13.0 km h. Failure to comply with these conditions reduces the level of realization of potential opportunities.