METHOD OF DETERMINATION OF REMAINING SERVICE LIFE OF LUBRICATING OIL AND DEVICE INTENDED FOR ITS REALIZATION Russian patent published in 1998 - IPC

FIELD: examination and analysis of materials. SUBSTANCE: at first induction period τ_o of fresh oil chemiluminescent radiation is determined. To this end, oil is heated up to t=(0.6-1.2) t_f, where t_f is oil flash temperature in open crucible. As soon as temperature t is attained, recording of chemiluminescent radiation intensity is started. Recording is continued till the moment chemiluminescent radiation intensity is n=4-10 times as high as in the first 1-3 min of recording, after which recording is stopped. Time period from starting of recording to its end is taken for induction period τ_o of fresh oil chemiluminescent radiation intensity. This done, induction period τ_o.t of oil with preceding operating time T_o.t is determined. Remaining service life T_r.s of oil is also determined. Devices intended for method realization has light-proof chamber with test vessel for oil positioned in container comprising the low-melting alloy. Device also includes heating element, thermal regulator, thermocouple, temperature indicating device connected to thermocouple, light guide, light proof chamber with photoelectronic multiplier, its power supply unit, photoelectronic multiplier current amplifier, indication unit, and data processing unit. EFFECT: more accurate determination of oil service life. 2 cl, 2 dwg, 2 tbl