The i̇nfluence of water on the change i̇n engi̇ne oi̇l quali̇ty i̇ndi̇cators

Introduction. One of the main types of deposits in an internal combustion engine is an emulsion or sludge formed by water, decomposition of fuel residues and solid residues. The sludge usually settles on the colder surfaces of the engine, such as the bottom of the crankcase pan, valve chambers and upper boards. The main problem is that this type of deposits can be collected by the engine oil and transferred to areas such as the oil pump, intake valve or oil channels, where the sludge can interfere with the flow of oil and cause a failure of the lubrication mode. In addition to the disruption in the operation of the above-mentioned systems, the engine oil quality indicators are also undergoing changes for the worse.
Materials and methods. To monitor the condition of the engine oil, it is necessary to determine the characteristics of its performance, such as: kinematic viscosity at 40 oC and at 100 oC, acid number, base number and determine the number of elements – indicators of additives and wear products contained in the engine oil. The viscosity was determined using a Stabinger SVM 3000 viscometer. It measures the dynamic viscosity and density of oils and fuels in accordance with ASTM D7042 and automatically calculates the kinematic viscosity, viscosity index and outputs the measurement results. The acid and base numbers were determined using an automatic titrator TitroLine alpha plus, and the presence of indicator elements in engine oil using an inductively coupled plasma optical emission spectrometer of the iCAP 7000 series, designed for analysis and determination of the number of indicator elements in liquid and solid samples.
Results. The dynamics of changes in the performance characteristics of the Gazpromneft Diesel Ultra 10W-40 engine oil with an extended replacement interval, which is applicable for equipment operating in severe conditions, depending on the water content in the samples of this lubricant, was analyzed.
Conclusion. The consequences that may occur due to water entering the engine oil are indicated.

1. Heredia-Cancino J. A., Ramezani M., Álvarez-Ramos M. E. Effect of degradation on tribological performance of engine lubricants at elevated temperatures. Tribology International, 2018, 124: 230–237. https://doi.org/10.1016/j.triboint.2018.04.015

2. Notay R. S., Priest M., Fox M. F. The influence of lubricant degradation on measured piston ring film thickness in a fired gasoline reciprocating engine. Tribology International, 2019, 129:112–123. https://doi.org/10.1016/j.triboint.2018.07.002

3. Raposo H, Farinha JT, Fonseca I, Galar D (2019) Predicting condition based on oil analysis - A case study. Tribology International, 2019, 135: 65-74. https://doi.org/10.1016/j.triboint.2019.01.041

4. Zzeyani S., Mikou M., Naja J., Elachhab A. Spectroscopic analysis of synthetic lubricating oil. Tribology International, 2017. 114: 27–32. https://doi.org/10.1016/j.triboint.2017.04.011

5. Machekhin N.Yu., Shirlin I.I., Pashukevich S.V. Osobennosti ekspluatacii tekhniki pri ispol’zovanii vysokokachestvennyh motornyh masel s uvelichennymi intervalami zameny [Features of the operation of equipment when using high-quality engine oils with extended drain intervals]. The Russian Automobile and Highway Industry Journal, 2019, 4: 446-454. https://doi.org/10.26518/2071-7296-2019-4-446-454 (In Russian)

6. Pimenov Yu.M., Ulitko A.V., Sereda V.A. Metod upravleniya trebovaniyami k ekspluatacionnym svojstvam goryuche-smazochnyh materialov [Method for managing the requirements for the performance properties of fuels and lubricants]. Himiya i tekhnologiya topliv i masel, 2021, 2: 16-24. (In Russian)

7. Zolotov V.A. Global’nye trebovaniya k svojstvam i metodam ispytanij motornyh masel dlya novyh dvigatelej [Global requirements for the properties and test methods of motor oils for new engines]. The world of petroleum products. Bulletin of oil companies, 2020, 3: 42-45. (In Russian)

8. Tormos B., Pla B., Bastidas S., Ramírez L., Pérez T. (2019). Fuel economy optimization from the interaction between engine oil and driving conditions. Tribology International, 2019, 138: 263-270. https://doi.org/10.1016/j.triboint.2019.05.042

9. Bagi, S., Sharma, V., & Aswath, P. B. Role of dispersant on soot-induced wear in Cummins ISB engine test. Carbon, 2018, 136: 395–408. https://doi.org/10.1016/j.carbon.2018.04.066

10. Li D., Kong N., Zhang Boyang, Zhang Bo, Li R., Zhang Q. Comparative study on the effects of oil viscosity on typical coatings for automotive engine components under simulated lubrication conditions. Diamond and Related Materials, 2021, 112: 108226. https://doi.org/10.1016/j.diamond.2020.108226.

11. Rossegger B., Eder M., Vareka M., Engelmayer M., Wimmer A. A novel method for lubrication oil consumption measurement for wholistic tribological assessments of internal combustion engines.Tribology International, 2021, 162: 107141. https://doi.org/10.1016/j.triboint.2021.107141

12. Baskov V., Ignatov A., Polotnyanschikov V. Assessing the influence of operating factors on the properties of engine oil and the environmental safety of internal combustion engine, Transportation Research Procedia, 2020, 50: 37-43. https://doi.org/10.1016/j.trpro.2020.10.005

13. Wang Y., Chen Y., Liang X., Tan P., Deng S. Impacts of lubricating oil and its formulations on diesel engine particle characteristics. Combustion and Flame, 2021, 225: 48–56. https://doi.org/10.1016/j.combustflame.2020.10.047

14. Tormos B., Garcia-Oliver J. M., Bastidas S., Domínguez B., Oliva, F., Cárdenas D. Investigation on low-speed pre-ignition from the quantification and identification of engine oil droplets release under ambient pressure conditions. Measurement. 2020, 163: 107961. https://doi.org/10.1016/j.measurement.2020.107961

15. Tormos B., Novella R., Gomez-Soriano J., García-Barberá A., Tsuji N., Uehara I., Alonso M. Study of the influence of emission control strategies on the soot content and fuel dilution in engine oil. Tribology International, 2019, 136: 285–298. https://doi.org/10.1016/j.triboint.2019.03.066

16. Petukhov S.A., Muratov A.V., Kurmanova L.S. Optimizaciya sistemy smazki dizel’nyh dvigatelej [Optimization of the diesel engine lubrication system]. Zheleznodorozhnyj transport, 2018, 5: 67-69.

17. Barykin A.Yu., Nuretdinov D.I., Frolov A.M., Kuchev S.M. Issledovanie vzaimosvyazi ekspluatacionnyh parametrov i resursa avtomobil’nogo dvigatelya [Investigation of the relationship between operational parameters and the resource of an automobile engine], Nauchno-tekhnicheskij vestnik Povolzh’ya, 2019, 3: 43-45.

18. Antropov B.S., Gumennyj V.V., Generalov V.A. Issledovanie periodichnosti zameny motornogo masla na dizel’nyh avtomobilyah [Investigation of the frequency of replacement of engine oil on diesel vehicles], Vestnik APK Verhnevolzh’ya, 2019, 2: 79-82.

19. Prokopcova M.D., Uhanov D.A., Glazunov I.D. Sklonnost’ motornogo masla m-10g2k k obrazovaniyu nizkotemperaturnyh otlozhenij v dizelyah [The tendency of m-10g2k engine oil to form low-temperature deposits in diesel engines], Trudy 25 GosNII MO RF, 2020, 59: 272-280.

20. Korolev A.E. Trenie i iznos dvigatelej pri obkatke [Engine friction and wear during running-in], Transportnoe, gornoe i stroitel’noe mashinostroenie: nauka i proizvodstvo, 2020, 9: 7-10.

21. Korneev S.V., Permyakov V.B., Bakulina V.D., Yarmovich Y.V., Pashukevich S.V. Influence of high temperatures on changes in the performance characteristics of motor oils when diluted with fuel. AIP Conference Proceedings: “Oil and Gas Engineering, OGE 2020” 2020. p. 020010. https://doi.org/10.1063/5.0026994