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1 Journal of Polish CIMAC

1 2008

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Researches Of Friction Force Of Injector Needle In Injector Bodies Of Marine Diesel Engines In The Presence Of Lubricating Compound

Monieta J., Lorek Ł.

Journal of Polish CIMAC

2008

Vol. 3, no 1

9-13

In article have been presented the results of researches of friction force between injection needle and body of marine diesel engines. There were injector nozzles of piston engines, which were feeding diesel oils or residual fuels. For investigations injector nozzles were chosen amongst sprayers operated in natural conditions, in which excess resistances of the spire were stated at the movement of needles in injector nozzles. There were disabilities, which importantly disturbed performance. There has been used, so passive experiment. The investigations have been carried on two stands for measurement of friction forces in dependence on its largeness. First of they have been raised in personal range for maximum friction force appointment witch utilization of weighting of gravity forces. For investigated of course of friction forces in injector nozzles about greatest resistances to motion, has been utilisation of stand for investigations of samples of tensile strength. An influence of angle putting the injector needle was being examined with regard to the body of the sprayer and kind of the greasing middle. They were greasing factors: fuel, applied oil it of conservation and oil applied for attempts at the stage of the production. There has been measurement of diameter clearance between frictional couple precise and researched him influence on the values of maximum friction force. To value of the maximum friction force among the body and needle of the injector nozzle has influence the amount and the quality of the lubricating compound, the state cooperating surfaces and their mutual location.