Selection of the main parameters of tractors for direct sowing of grain crops according to various optimization criteria

The article discusses the questions of optimization parameters and operating modes tractor as a part arable unit by various criteria optimization. following have been chosen for consideration. These are minimum total energy costs, taking into account lost crop; emission carbon dioxide atmosphere; fuel consumption per 1 ha crops; maximum performance; traction efficiency tractor. optimal weight tractor, power its engine, width sowing working speed were determined carrying out computational experiments with change in resistivity complex. It was revealed that do not coincide according to all an increase specific resistance soil bodies seeder, value engine grow. should be 120 kN possibility loading up 150 kN, it is desirable two-level 500 600 hp. seeder must able from 14 18 m.