Lubricating Oil Performance Assessment Using Signed Digraph and Matrix Approach

In this paper, a new approach for lubricating oil performance is assessed as an index by considering its pertinent properties and their interaction, modeled in terms of lubricating oil performance signed digraph (LOPSD). Its equivalent matrix is defined to obtain lubricating oil performance function. Numerical value of the function is called lubricating oil performance index (LOPI) and is a measure of lubricating oil performance and its residual life at a given time. This is obtained by substituting results of the identified oil tests.