The research goal is working liquid losses decreasing through the radial clearance in the way of measuring the rational radial clearance between gear teeth and gear pump body. In this research was considered the radial clearance value influences the body and gears of gear pump hydraulic systems of auto and tractor machinery. Given research results of working liquid loses dependency through the radial clearance between teeth and gear pump body. Offered a new way for condition determination in which working liquid losses through radial clearance are minimal. Received terms for working liquid losses measuring, which include the presence of pressurized and friction (viscous) part of losses. Determined main parameters, which allow for management of working liquid losses through radial clearance, such as gear teeth top wideness, gear rotational speed, and gear outer radius. The research of rational radial clearance measuring results allows increasing gear pump manufactory technology efficiency due to optimization of pump details manufactory. Determined main parameters, which influence on losses value and rational radial clearance value and due of which they will be minimal. Offered to increase the durability of gear pump hydraulic systems of auto and tractor machinery work in the next ways: decreasing of starting body deterioration, exclusion further deterioration of radial details connection by using friction part of working liquid movement in radial clearance effect.
A turbocharger is a unit of modern internal combustion engines designed to boost it. Since a drive of the turbocharger is most often carried out from the energy of the exhaust gases, the conditions of its operation can not be called favorable: the temperature of the exhaust gases sometimes reaches 7000C, high chemical activity of the exhaust gases, high speed of rotation of the turbine. The consequence of difficult operating conditions is the wear of its elements. One of the main causes of wear of the active elements of the turbocharger is abrasive wear. Various methods of restoration and strengthening can be used to restore machine parts. However, not all methods can provide the necessary resource for the restoration and strengthening of parts working in abrasive and corrosive environments. One of the modern directions of increasing the wear resistance and other properties of reducing coatings is the use of composite materials. This article presents the results of research on the development of a new method for restoring and strengthening parts with composite materials based on the use of chemical vapor deposition of metals CVD - method (Chemicikal Vapor Deposition) by decomposition of organometallic compounds. It is shown that the developed composite material obtained by the CVD-method of decomposition of organometallic compounds provides an increase in wear resistance of at least 2.0...2.2 times in comparison with new parts composite material. Vapor-phase deposition of metals, Chemicikal Vapor Deposition-method, decomposition of organometallic compounds.
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