Kolomoetz V. Increase of reliability of fuel systems of agricultural machonery working on methyl вiotuel

The object of research - the functional reliability of fuel systems operating on different fuels. The aim is to improve the reliability of the fuel system of modern agricultural machinery running on biofuel methyl, by improving its operation and reasonable replacement construction materials, which are made from elements of the fuel system. Theoretical and experimental studies were conducted by using the theory of multi-reliability theory and the destruction of the surface layers of material parts that were connected in the process of deterioration in the active medium. Laboratory studies were conducted in specially designed facilities for the accelerated tests using control and measuring high accuracy. Evaluation of reliability HPFP running on biofuel methyl, held in farms using agricultural tractors. Done selection of structural materials for manufacturing plunger, operating in an environment of methyl biofuels that provide resources not less regulation. Done selection of structural materials for sealing elements fuel system when working on methyl biofuel, which increased their average life of 960 moto - hours. 4000 Moto - h., and the probability of failure of the fuel system corresponds to the average resource where standardized routine maintenance. Recommendations to improve the rules of operation of fuel systems of agricultural machinery at work on methyl biofuels. The method of accelerated testing znosovyh plunger, to assess the reliability of fuel systems for their improvement and design.For the first time proved that the reliability of fuel systems of agricultural machinery, working on biofuels methyl lower than when running on petroleum diesel fuel. Established numerical values of these parameters. Identified the main factors affecting the reliability of individual elementiv.Otrymala further development of probabilistic reliability model that allows to identify "weak link" in the fuel system resources by predicting their elements. Yes, Lowest resource with all elements of the fuel system are still seals and plunger pair HPFP; Mathematical model of wear plunger HPFP taking into account the impact of fuel and modes of operation. The technique of determining wear items plunger using factor of wear.