Rejection indicators of motor oils – fresh one, and the one recovered in RUMS-1 unit

Abstract

The results of comparative tests of fresh and waste engine oils recovered by regeneration in RUMS-1 unit in the vessel’s forced diesel engine are presented. The used engine oil was restored to its original level of properties by regeneration and addition of the respective additives. As a result of tests and data processing, mathematical models of changes depending on the operating time of the following indicators were obtained: colloidal contamination, tar formation, content of insoluble impurities, top basic number, acid number, hydrogen index pH, and viscosity. The same change in the operational properties of commercial and regenerated oil is shown in terms of their effect on the condition of engine parts and overall operation of the lubrication system units. The obtained mathematical models of changes in rejection parameters of engine oil can be used to predict the service life of engine oil.