Efficiency of cleaning and the life cycle of the modernized filter for rough cleaning of diesel fuel

The paper considers the problem of the reliability of the fuel equipment of tractor diesel engines at low temperatures. The main problem of the operation of such engines is the deterioration of fuel pumpability through the fuel lines, waxing and clogging of fine filters. The authors propose a new design of the coarse filter (CF), where the filter element is a filter tape made of nonwoven needle-punched material with variable compression, which has increased filtration efficiency with the possibility of simultaneous heating of the fuel. The advantage of the proposed changes is the use of a standard coarse filter housing. Performance tests are presented. According to the results of operational tests of the upgraded coarse filter, it was found that, unlike the standard element, the mass concentration of contaminants is reduced by about half, and the probability of dropping out particles larger than 30 microns is 90 %. The particle size distribution curves of contaminants after a standard and upgraded filter and a resource characteristic are built. The results of comparative operational tests of filters for pollution are presented. The pressure drop across the filter at the onset of maintenance is estimated, and an increase in scheduled filter replacement is suggested. The degree of compression of the filtering material was determined to exclude the appearance of particles larger than 35 μm after the CF.

diesel fuel, cleaning efficiency, filtration, heating, increased life cycle