621.891

operation; vehicles; motor oils; transmission oils; fullerenes, fullerene compositions; volumetric fuel consumption; urban driving cycle.

The assessment of a car fuel efficiency during operation using lubricants (motor and transmission oils) with fullerene compositions in a urban driving cycle is executed. Fullerene compositions were added to the engine and transmission oil at a mass concentration 10%. The guiding document that defines the procedure for testing vehicles for fuel efficiency is GOST 20306-90. Urban driving cycle tests were carried out on a truck ZIL-5301 "Bull" at an outside air temperature of +20°С (summer operation period) and at an outside air temperature of -5°С (winter operation period). It is established that operating a car in the urban driving cycle using of fullerene composition in both engine and transmission oils reduces the fuel consumption of the car by 14.54 ... 17.45% in the summer period. The value of 17.45% corresponds to the mileage of the car without cargo (m = 0), and the value of 14.54% – to the mileage with a cargo (m = 3000 kg). The coefficient of variation of the measured value of fuel consumption was 0.039 ... 0.042. This allows us to conclude that the measurement error is in the range of 3.9 ... 4.2%. When operating the car in the urban driving cycle in the winter operation period, the use of fullerene composition (mass concentration 10%) Simultaneously in the engine oil and transmission oil reduces fuel consumption by 13.24 ... 15.15%. The value of 15.15% corresponds to the mileage of the car without cargo (m = 0), and the value of 13.24% – mileage with cargo (m = 3000 kg). The coefficient of variation of the measured value of fuel consumption was 0.039 ... 0.044. This allows us to conclude that the measurement error is in the range of 3.9 ... 4.4%.

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1. Polunkin E. V., Kameneva T. M., Piljavskij V. S., Zhila R. S., Gajdaj O. A., Troshin P.A. Antiokislitel'nye i protivozadirnye svojstva galogenirovannyh fullerenov [Antioxidant and Extreme Pressure Properties of Halogenated Fullerenes ]. Kataliz i neftehimija. 2012. No. 20. Р. 70–74.
2. Gindzburg B. M., Bajdakova M. V., Kireenko O. F. [et]. Vlijanie fullerenov S60, fullerenovyh sazh i drugih uglerodnyh materialov na granichnoe trenie skol'zhenie metallov [Effect of C60 fullerenes, fullerene soots and other carbon materials on the boundary sliding friction of metals ]. Zhurnal tehnicheskoj fiziki. 2000. No. 12. Р. 87–97.
3. Tochil'nikov D. G., Ginzburg B. M. Vlijanie C60-soderzhashhih prisadok k smazochnomu maslu na optimizaciju processov iznashivanija pri granichnom trenii metallov [Influence of C60-Containing Lubricating Oil Additives on Optimization of Wear Processes at Boundary Friction of Metals] Zhurnal tehnicheskoj fiziki. 1999. Vol. 69. Issue 6. Р. 102–105.
4. Gvozdev A. A., Smirnova A. I., Berezina E. V., Dunaev A. V., Tkachev A. G., Usol'ceva N.V. Issledovanie tribotehnicheskih harakteristik perspektivnyh smazochnyh materialov s uglerodnymi nanochasticami [Investigation of the tribological characteristics of promising lubricants with carbon nanoparticles]. Zhidk. krist. i ih praktich. ispol'z. Liq. Cryst. and their Appl. 2018. 18 (1). Р. 66–72.
5. Jah'jaev N. Ja., Begov Zh. B., Batyrmurzaev Sh.D. Novaja smazochnaja kompozicija dlja modifikacii poverhnostej tribosoprjazhenij sudovogo malorazmernogo dizelja [New lubricant composition for modification of surfaces of tribo-couplings of a small-sized marine diesel engine ]. Vestnik AGTU. Ser.: Morskaja tehnika i tehnologija. 2009. No. 1. Р. 47–52.
6. Ankit Kotia, Krishna Chowdary, Isha Srivastava, Subrata Kumar Ghosh, Mohamed Kamal Ahmed Ali. Carbon nanomaterials as friction modifiers in automotive engines: Recent progress and perspectives. Journal of Molecular Liquids. Volume 310. 15 July 2020. Р. 113–200. URL: https://doi.org/10.1016/ j.molliq.2020.113200.
7. Shahmohamadi H., Rahmani R., Rahnejat H., Garner C. P., Balodimos N. Thermohydrodynamics of lubricant flow with carbon nanoparticles in tribological contacts. Tribology International. Volume 113. September 2017. P. 50–57. URL: https://doi.org/10.1016/j.triboint.2016.12.048.
8. Vojtov V. A., Kravcov A. G., and Tsymbal B. M. Evaluation of Tribotechnical Characteristics of Tribosystems in the Presence of Fullerenes in the Lubricant. FRICTION AND WEAR. 2020. Vol. 41. No. 6. P. 704–710. DOI: 10.3103/S1068366620060197.
9. Kravcov A. G. Ocіnka efektivnostі zastosuvannja fulerenovih kompozicіj v motornih olivah pri ekspluatacії DVZ [Evaluation of the effectiveness of fullerene compositions in motor oils in the operation of internal combustion engines]. Tehnіchnij servіs agropromislovogo, lіsovogo ta transportnogo kompleksіv. 2020. No. 21. Р. 41–49. DOI 10.37700/ts.2020.21.41-49.