Studying truck transmission oils using the method of thermal-oxidative stability during vehicle operation

Аулин, Виктор; Hrynkiv, Andrii; Лысенко, С. В.; Rogovskii, I. L.; Chernovol, M.; Lyashuk, Оleg; Zamota, Taras

doi:10.15587/1729-4061.2019.156150

Cited by 22 publications

(14 citation statements)

References 9 publications

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“…Responses or resulting features during the experiment were: Y1 -magnitude of wear (mm) → min; Y2 -critical load (N) →max; Y3 -welding load (N) →max. Table 1 Formation of factors and their levels for the experiment The preliminary choice of factors' levels was made based on the formalization of a priori information of the series of experiments [1,2,6,23]. The values of the lower factor were determined according to their impact on the corresponding response function or the possibility of manifestation of the negative processes in the junction during of the friction process.…”

Section: Materials and Methods For The Formation And Research Into Chmentioning

confidence: 99%

“…Working oils with tribopreparations significantly affect the friction surface. The composition of tribological preparations most often includes the following additives: surface-active; chemically active; inactive; metal-melting and plastic-deforming additives [6] and others. At that time, the technology of their formation was not developed and constituents according to tribological conditions were not selected.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

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Determining the rational composition of tribologically active additive to oil to improve characteristics of tribosystems

Аулин

Hrynkiv

Лысенко

et al. 2019

EEJET

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Проведеними дослідженнями формування раціонального складу трибологічно активної добавки до базової оливи показана можливість покращення характеристик трибосистем. Виявлено, що дана трибологічно активна добавка дає можливість формувати трибологічні властивості, що забезпечують нормальні умови експлуатації спряжень деталей трибосистеми. На основі оптимізації технічного стану трибологічно активної добавки отримано раціональні значення кожного з її складових. Оптимізацію проведено за умов, що величина зношування повинна прямувати до мінімуму, а критичне навантаження та навантажування зварювання-до максимуму. На основі експериментальної бази даних на чотирикульковій машині тертя отримано рівняння для кожної з функцій відгуку результуючих ознак. Отриманні регресійні рівняння та значення функції бажаності порядку 0,698 дали можливість визначити склад трибологічно активної добавки: метакаолін, дисперсійний порошок глини з Катеринівського родовища, олеат натрію, гідрооксид літію та сірки. Встановлено, що при використанні отриманої трибологічної активної добавки в лабораторних умовах зафіксовано зменшення зношування зразків на 26,8 %, збільшення критичного навантаження на 17,2 %, збільшення навантажування зварювання на 4,89 %. Аналіз експериментальних даних свідчить, що пропоновану трибологічно активну добавку можливо експлуатувати при локальному контактному навантажуванні в контакті до 1078 Н та при піковому перенавантажуванні до 2372 Н. Результати досліджень дають підстави стверджувати, що пропонована трибологічно активна добавка дає можливість покращити характеристики трибосистем. Вона може бути корисною сервісним та автотранспортним підприємствам при проведені технічного сервісу та для виготовлення композиційної оливи Ключові слова: трибологічно активна добавка, геомодифікатор, зношування, сірка, літієві мила, натрієві мила, метакаолін, навантаження зварювання UDC 629.

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Section: Materials and Methods For The Formation And Research Into Chmentioning

confidence: 99%

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Determining the rational composition of tribologically active additive to oil to improve characteristics of tribosystems

Аулин

Hrynkiv

Лысенко

et al. 2019

EEJET

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“…The non-stable processes in the operation of friction nodes in automotive equipment in the presence of motor lubricants were considered in papers [6][7][8][9]. The experimental studies have established the effect of various additives to oils on the stabilization of friction forces and reducing the wear of rubbing surfaces.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Exchange interaction and models of contact generation of disturbances in tribosystems

Zaspa

Dykha

Marchenko

et al. 2020

EEJET

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The physical mechanisms have been investigated that form and transform the corpuscular-vortex-wave thermal complexes of disturbances in contact tribosystems based on the quantum-mechanical exchange interaction. The presence of a contact gap determines the generation of pairs of quasi-particles-disturbances stabilized by wavelength and frequency. Internal instability and collapse processes in such a system of disturbances lead to the formation of defects in a tribopair's material and underlie the emergency friction regimes. This paper gives specific technical examples of the generation of thermal complexes at fretting, during the friction of sliding and rolling, and at cutting. It has been established that the destructive nature of the process of fretting at low values of reverse sliding speeds is caused by the generation and collapse of the corpuscular-vortex-wave thermal complexes. An example of acoustic friction emission in the ultrasonic region of the spectrum has been used to show the quantum nature of the disturbances generated by friction. The high-frequency spectrum of acoustic emission corresponds to the unbalanced composition of the disturbances and leads to the formation of wear particles. The exchange interaction in a tribosystem involving rolling on the plane has been considered. The results of statistical analysis of such rolling showed the existence of the effect of negative friction caused by the quantum generation of longwave disturbances. It has been demonstrated that the collapsed component of the generation of disturbances is significantly increased under the modes of materials destruction, including when cutting the materials. The corpuscular-vortex-wave mechanism of selective transfer and hydrogen wear in tribosystems has been described. It is shown that the properties of a servovite film under the mode of selective transfer are provided by the collapse processes in the system of disturbances. Similar processes at the vortex-wave transfer of hydrogen atoms in metals lead to the wear and destruction of the surface layer of friction

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“…However, the authors did not consider the characteristic of relative abrasive resistance of the examined elements of tribojunctions. A series of studies [7] were conducted to explore the possible connection between dimensional effects in clean polymers and polymeric composites. The dimensional effects in composites should be considered based on a tribological point of view, which makes it possible to select materials for mating under specific operating conditions.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Analysis of tribological efficiency of movable junctions "polymericcomposite materials ‒ steel"

Аулин

Derkach

Makarenko

et al. 2019

EEJET

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Studying truck transmission oils using the method of thermal-oxidative stability during vehicle operation

Cited by 22 publications

References 9 publications

Determining the rational composition of tribologically active additive to oil to improve characteristics of tribosystems

Determining the rational composition of tribologically active additive to oil to improve characteristics of tribosystems

Exchange interaction and models of contact generation of disturbances in tribosystems

Analysis of tribological efficiency of movable junctions "polymericcomposite materials ‒ steel"

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Studying truck transmission oils using the method of thermal-oxidative stability during vehicle operation

Cited by 22 publications

References 9 publications

Determining the rational composition of tribologically active additive to oil to improve characteristics of tribosystems

Determining the rational composition of tribologically active additive to oil to improve characteristics of tribosystems

Exchange interaction and models of contact generation of disturbances in tribosystems

Analysis of tribological efficiency of movable junctions "polymeric­composite materials ‒ steel"

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Product

Resources

About

Analysis of tribological efficiency of movable junctions "polymericcomposite materials ‒ steel"