发明名称 |
PROCESS EVALUATING SEDIMENTATION STABILITY OF MOTOR OILS |
摘要 |
FIELD: testing of lubricating oils in petroleum refining and other branches of industry while predicting storage life of motor oils. SUBSTANCE: alkaline number and kinematic viscosity are taken as informative indices. Centrifugation is carried out in the course of 8 (<EMI ID=0.512 HE=3 WI=3 TI=CHI>) h with separation factor of 20000<EMI ID=0.513 HE=3 WI=3 TI=CHI>100 units. After it specimens are taken out of all test tubes. Specimens are mixed, alkaline number and kinematic viscosity of this mixture is found. Sedimentation stability is evaluated by generalized index determined as square root from product of relative rates of change of alkaline number and kinematic viscosity during centrifugation time. EFFECT: timely and authentic evaluation of sedimentation stability of motor oils and low cost of process. 5 tbl |
申请公布号 |
RU2138047(C1) |
申请公布日期 |
1999.09.20 |
申请号 |
RU19980106682 |
申请日期 |
1998.04.13 |
申请人 |
25-J GOSUDARSTVENNYJ NAUCHNO-ISSLEDOVATEL'SKIJ INS |
发明人 |
ZOLOTOV V.A.;CHULKOV I.P.;FEDOROV M.I. |
分类号 |
G01N33/30 |
主分类号 |
G01N33/30 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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