RESULTS OF EXPERIMENTAL RESEARCH PHYSICAL-CHEMICAL CHARACTERISTICS OIL FROM ENGINES OF VEHICLES

In the study of ways to reduce the friction losses of internal combustion (IC) engines, investigations of losses from elements in the piston assembly, the bearing system, and the valve train system are paramount. Mechanical and thermodynamic losses, wear and the emissions caused by lubricating oil combustion are principally influenced by the tribological behaviour of the piston assembly. The tribological performance of piston rings in reciprocating IC engines can only be fully understood when both lubrication and wear are considered in combination. This paper deals with physical-chemical tests that are part of the oil analysis and are used to access the condition of the system. Furthermore, the results of experimental research on the physical-chemical properties of the oil sampled from engines of the vehicles are shown.