METHOD AND SYSTEM FOR DETERMINING OIL QUALITY

摘要

A method for determining quality of lubricating oil using electrodes (17) in contact with the oil (12) includes applying a potential having a first amplitude to the electrodes (17), wherein the first amplitude is sufficiently low such that substantially no solution current will flow; determining a first voltage phase lag (104) with respect to the potential when the potential has the first amplitude; increasing amplitude (106) of the potential to a second amplitude at which solution current flows; determining a second voltage phase lag with respect to the potential when the potential has the second amplitude (108); and determining (110) the quality of the oil (12) based on the voltage phase lags. A system (10) for practicing the method is also provided.