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Study on Estimation Method of Anti-oxidation Performance for Engine Oil Deterioration Monitoring System

Article of Honda R&D Technical Review Vol.19 No.2


The research discussed in this paper demonstrated the existence of a strong correlation between the anti-oxidation performance of engine oil and the production of sludge. Analysis of the deterioration mode of anti-oxidation performance in component tests and engine bench tests of engine oil indicated that the reaction mechanisms causing engine oil deterioration could be approximated by the superpositioning of zero- and first-order reactions. The results of these tests also demonstrated that heat, air, NOx and unburnt fuel are major factors in the deterioration of anti-oxidation performance. Detailed analysis resulted in the proposal of a general equation for the deterioration of oil anti-oxidation performance, which enabled the degree of deterioration to be estimated.
Actual vehicle tests showed that the use of the equation enabled accurate estimation of the deterioration rate of anti-oxidation performance, indicating that the method has potential for onboard use.


(1) Suzuki, K.: Trends in Used Lubricating Oil Recycling, Triborogists, Vol. 51, No. 4, p. 282-287 (2006)
(2) Igarashi, J.: Enjinyuno chyoujyumyouka nitaisururirontekitorikumi, Nisseki Mitsubishi Review, Vol. 41, No. 2, p. 20-30 (1999) (in Japanese)
(3) Tanaka, M.: Jidousyayou enjinyunorekkato oirukoukanjiki, PETEROTECH, Vol. 12, No. 12, p. 992-997 (1989) (in Japanese)
(4) Moritani, K., Kawamura, M.: Development and Application of Simulator for Engine Oil Sludge Formation, R&D Review of Toyota CRDL, Vol. 28, No. 1, p. 35-41 (1993)
(5) Schwartz, S. E., Smolenski, D. J.: Development of an Automatic Engine Oil-Change Indicator System, SAE Paper, 870403 (1987)
(6) Mahoney, L. R., Korcek, S.: The Effect of Fuel Combustion Products on Antioxidant Consumption in a Synthetic Engine Oil, Ind. Eng. Chem. Prod. Res. Vol. 19, p. 11 (1980)
(7) Korcek, S., Mahoney, L. R.: Mechanism of Anti oxidant Decay in Gasoline Engines: Investigation of Zinc Dialkyldithiophosphate Additives, SAE Paper, 810014 (1981)
(8) Aikawa, K., Maruyama, M.: Development of an Oil Deterioration Monitoring System by Estimating Base Number, Honda R&D Technical Review, Vol. 18, No. 2, p. 176-181
(9) Sakurai, T.: Sekiyuseihintenkazai, Saiwai Shobo, p. 509 (1973) (in Japanese)
(10) Okabe, H., Okatsu, Y.: Sekiyuseihintenkazainokaihatsu, CMC Syuppan, p. 174 (1998) (in Japanese)
(11) Method to evaluate oxidation life of used engine oils, Research Disclosure Journal, Research Disclosure Database Number 510074
(12) Sagawa, T., Nakamura, K.: Study of Fuel Dilution Direct-Injection and Multipoint Injection Gasoline Engines, SAE Paper, 2002-01-1647 (2002)

Author (organization or company)

Yosuke OKUYAMA(Automobile R&D Center)、Koichiro AIKAWA(Automobile R&D Center)、Wataru HOSHIKAWA(Automobile R&D Center)、Masashi MARUYAMA(Automobile R&D Center)

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