The goal of the work is to substantiate rational trac- tion modes and parameters of Versatile 2375 tractor for zonal tillage technologies. The analysis of the state of the Russian and regional markets for high-capacity agri- cultural tractors, made on the model series of mobile power tools of 4k4b wheel formula of domestic produc- tion is carried out. In the structure of the renewal of the tractor fleet of rural commodity producers in the Krasno- yarsk Territory, the K-744R tractors of the Petersburg Tractor Plant CJSC and Versatile 2375 Rostselmash LLC amounted to 35 and 7 %, respectively. The Models and algorithm of stage-by-stage optimization of mass energetic parameters taking into account established constructional features and restrictions on traction and high-speed operating modes are developed for increase of efficiency of use of Versatile 2375 tractor in technolo- gies of tillage According to the results of simulation and experiment, optimal values of the specific gravity of the tractor for tillage operations of different groups were substantiated.. To a rational traction-speed range limited by the thrust of the thruster 0.081-0.121 and the nomi- nal speed of 3.30-2.20 m/s, corresponds to the values of the regulation of the operating mass from == 14.82 t to = 17.85 t with distribution on the front axle 56.8-58.1 %, which makes it possible to use the tractor on the tillage operations of the second and third groups in the sixth, and on the operations of the first group in the eighth traction classes. With a mini-mum operating mass of the tractor of the basic configu- ration = 12.42 t with the abscissa of the center of mass = 0.65 m, the required mass of ballast from2.4 to 5.3 t provides for the installation of intermediate, main and additional rear loads, regulation of the mass of the front load from 0.13 up to 1.30t with the addition of water at the rear wheels of 0.28 t for the operations of the first group. According to the net performance in the operations of the second and third groups, the tractor should be used with a root length of 600-1000 m.
algorithm, ballasting, tillage, productivity, tractor, specific gravity
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