Increasing the wear resistance of plunger pairs of high-pressure fuel pumps using extreme pressure additives
DOI:
https://doi.org/10.31891/2079-1372-2024-114-4-24-31Keywords:
wear resistance, coefficient of friction, fuel pump, friction steam, diesel fuel, anti-seize additive, resource testsAbstract
The paper presents studies and substantiates extreme pressure additives that are in demand in almost all areas where heavy equipment and machines operate: in heavy industry, metallurgy and metalworking, machine tool manufacturing, aircraft and shipbuilding, automotive production, construction, and power engineering. At the same time, the development and use of this type of additives in energy facilities of the agro-industrial complex is very difficult due to their relative high cost, and the lack of a complete scientific study of the problem does not contribute to the widespread use of extreme pressure additives in agricultural tractor engines. Therefore, there was a need to conduct scientific research to assess the effect of extreme pressure additives on the performance of high-pressure fuel pumps and, based on the information obtained, to develop production recommendations. In the course of the research, a functional model of the plunger pair performance indicator was obtained, taking into account the performance properties of summer diesel fuel with extreme pressure additives. The results of experimental studies are presented, taking into account the performance properties of summer diesel fuel with extreme pressure additives. The results of production tests of plunger pairs of high-pressure fuel pumps using summer diesel fuel with an extreme pressure additive have been obtained. The use of summer diesel fuel with an extreme pressure additive allows increasing the service life of plunger pairs of high-pressure fuel pumps from 1230 to 2214 hours; recommendations for using fuel for 14 kN traction class engines have been developed. The friction coefficient decreases from 0.005 to 0.001 when plunger pairs operate on summer diesel fuel with an extreme pressure additive. The results have been obtained for selecting the component composition of the additive in diesel fuel and recommendations for using the extreme pressure additive in diesel fuel have been developed.
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