An energy-saving modular tiller including duckfoot tines and rollers that provide multidirectional impact on the soil are proposed.
Diagnostic methods of turbocharger systems and their main disadvantages associated with the low accuracy and high probability of failure are analyzed. Main problems of general approach to the turbocharger systems diagnostics and ways of their solution are given.
Construction of a complex for the assessment of technical condition and faults of diesel turbocharger systems are presented. The diagnostic procedure is described.
Justification of construction of a semi-automatic adjuster of the approach angle of disk header’s tools is presented. It significantly reduces the regulation time and energy consumption for soil tillage in compliance with agricultural requirements.
Different ways to increase the durability of restored fixed joints of bearing assemblies’ parts with polymer composites are analyzed.
Basic theoretical background of obtaining the prolonged life of round gear hydraulic pumps during the repair is given. Physical-mechanical properties of coatings formed with the use of combined method are investigated. A mathematical model of relationship between the gaps in conjunctions with internal leakage in a hydraulic unit is obtained. The possibility of round pump repair with the use of combined method is confirmed.
The use of universal means of measurement of machine-tractor unit operation parameters in modern world technical inspection systems is analyzed. A scheme of a complex for the remote control of machine-tractor unit operation parameters is presented.
Results of multivariate experiment on the impact of technological regimes of cold gas-dynamic spraying (CGDS) on the powder material utilization are given. Presented mathematical model of the process is the basis for the choice of rational regimes of CGDS in restoring of worn surfaces of parts.
Construction and results of testing of a battery stabilizer of fuel injection installed on the high pressure fuel pump are described.
A new resource-saving process of restoring the worn mounting holes of body parts with multi-layer metal-polymer coatings is presented. Results of study of the physical-mechanical, rheological and technological properties of polymeric materials are given. Recommendations for their use are considered.
Necessity of use of tillers with active tools for broadcast placement of mineral fertilizers on the slope is grounded. A mode of the unit operation on the slope and prerequisites for its construction by quality factor are described.
A method of optimization of wind energy generator operation, based on a mathematical model and allowing to reach the maximum utilization factor of wind energy is proposed.
The theory of dynamical systems and such catastrophe theory models as «fold» and «assembly» are considered. Divergence properties of the «assembly» catastrophe are illustrated. An alternative hypothesis is found under the analysis of the «assembly» model: the number of defective and failure machines reflects the level of their technical operation and is related to the quality of machines’ production, their maintenance and repair, as well as to the specific load on machine.
A method of network quality planning is considered. It takes into account the functional interdependence of research and development at different network layers. This method fully explores the dynamics of movement of machine and tractor units.
Main features of development of the world agriculture in modern conditions and its status in Russia are briefly considered. Prospects of development of agricultural production in Russia are shown on the basis of machine technologies. Proposals for innovative development of domestic production of potato machines with the assessment of effectiveness of their implementation are given as an example.
A brief overview of kinematic characteristics of test benches for the research of rotary cultivators is carried out. Comparative analysis of experimental test benches’ constructions and systems of kinematic characteristics control is given.
An original technique and results of experimental evaluation of the relationship between «external» and «internal» wears of used seals of hydraulic power cylinders’ movable joints are presented.
Efficiency of a local adiabatic air cooler was considered when the outside temperature was over 28°C. The cooler is equipped with an intensified attachment irrigated with water containing dissolved active additives Na 2CO 3 and RMnO 4. Parameters of the apparatus needed for the thermal equilibrium between operator’s body and air flow are presented.
Results of studies of belts compression by pulleys with cylindrical protrusions in flax harvesting machines are given. A method for calculation of cylindrical protrusions deepening into the rubber layer of belts is developed.
Basic causes of resource failure of the ГСТ-90 volumetric fluid power drive are established and some ways to improve the reliability of hydrostatic transmissions are revealed.
Problems of training of students specializing in agroengineering for the innovative activities are considered. The developed method is based on immersion into the innovation environment during a student competition in agricultural mechanization.
The basics of parts surfaces’ hardening are given. Basic dependences of hardening are presented. Sequential determination of surface quality is given, metallurgical studies of hardened samples are carried out.
Necessity of use of combined tools for small-sized tillers is grounded. Essential and sufficient terms of their combining are formulated.