It is found that service life of Russian-manufactured ploughshares is determined by ray-shaped wear and abrasion of a deepening part of plough-point, but service life of imported components is determined by wear of cutting-blade parts of the frame. Some kinds of one-sided chisels wear can be repaired and do not cause their rejection.

Typically independent power take-off shafts are used in tractors. In order to increase economical efficiency of aggregates when engines are underloaded, stabilized power take-off shaft and low-energy one are proposed for Belarus tractors of 1,4 and 5,0 categories. The prototype models passed the factory test.

Indicator diagrams of 2Ч 10,5/12,0 diesel have been analyzed in accordance with the method of Central Research and Development Institute of Diesel Engines. Diagrams of heat generation in thermally forced diesel are obtained for two regimes, namely for nominal and maximal driving moments. It was found theoretically that thermal forcing shortens preliminary stage of the burning and decreases the operating severity. It opens a prospect for forcing of diesel on mean effective pressure.

Structural diagrams and theoretical background for substantiation of parameters of energy-saving undermining working organ are given.

The method allowing to estimate of utilization level of grain combines’ performance is proposed. Efficiency of the method is demonstrated by the specific example.

The new preparation method for vitaminic grass flour from leaf part of grass plant is proposed, constructive and technological scheme of separator of small leaf part of grass plant is substantiated. As a result of theoretical researches equations of equivalent forces affecting plants’ stems in each quarter of circle of eccentric rotation are obtained, conditions for stems moving towards pitch of separator screen are determined.

Short information concerning the Moscow Economic Forum-2014 is given. Basic problems of national agricultural machinery industry and production of agricultural machinery are highlighted. An experience of establishment and effective operation of the Kolnag plant is considered as an example. General trends and development prospects for national agricultural machinery industry in the modern conditions are presented.

Results of investigations related to improvement of effective indicators of 2Ч 10,5/12,0 diesel by the use of ethanol and rape oil with binary system of fuel supply are presented.

Special procedure for assessment of efficiency of energy use of exhaust gases from turbocharged engines in a wide range of loading modes and ambient air temperatures, based on the exergy method, is proposed. Reliability of the proposed procedure is confirmed experimentally. Ways of improvement of turbocharged diesel engines operational efficiency are outlined.

Belarus-921 horticultural wheeled tractor of drawbar category 1,4 having all driving wheels and power engine of 66 kW (90 h.p.) is intended for mechanization of agricultural works in horticulture, fruit growing, viticulture and other branches. It has necessary equipment for aggregating with a system of agricultural machines. Main part of units and elements (about 82%) is unified with Belarus wheeled tractors of 900 family.

Current trends of improvement of technologies and engineering means for grain crops harvesting are considered. Design features of proposed engineering solutions are described.

Based on the new equation of a wheeled vehicle motion, calculation formulas for determination of normal response of bearing surface on wheels of a moving machine and coefficients of their redistribution on axles are obtained.

Basic soil cultivation technology combining moldboard and subsoil plowing into one technical process is developed. Ploughs of ПСБ-family suitable for tractors of various drawbar categories have been developed for implementation the new technology.