transmission oil
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2021 ◽  
Vol 2131 (4) ◽  
pp. 042031
Author(s):  
M V Boiko ◽  
A V Sidashov ◽  
T G Boiko ◽  
A A Bicherov

Abstract The tasks of the development of the Far North, the Arctic and the Antarctic require ensuring the operability of equipment units in low temperatures. To solve this problem, it is necessary to develop lubricants using new synthetic oils, a distinctive feature of which are low pour points. On the basis of polyethylsiloxane fluid and petroleum oil, we have developed a gear oil for the Arctic latitudes, which is efficient at temperatures down to -75 ° C (TMarktic). It is shown TMarktic’s antifriction properties are better than those of TSgip helicopter tail gear oil. The combined use of XPS and IR-Fourier methods for the analysis of the friction surface made it possible to conclude that the formation of the boundary film involves both antiwear additive molecules, which are part of the modified oil, due to the P-O, P=O, S=O bonds, so and molecules of polyethylsiloxane liquid due to C-O and Si-O bonds. Secondary surface structures are formed by TMarctic oil on the surface of iron oxide and include hydrocarbon and siloxane fragments. The high antiwear and extreme pressure properties of TMarktic are due to free sulfur and bound in iron sulfide.


Author(s):  
Mikhail Nikolaevich Pokusaev ◽  
Konstantin Evgenievich Khmelnitsky ◽  
Anastasia Aleksandrovna Khmelnitskaya ◽  
Maxim Michailovich Gorbachev ◽  
Alexei Alekseevich Kadin ◽  
...  

The most effective assessment of the quality of transmission and motor lubricating oils for marine engines in general and of outboard motors in particular can be given by practical tests on real engines. An important factor for improving the technical characteristics of outboard motors by reducing friction in the movable joints of the internal combustion engine and gearbox is the right choice of a lubricating oil. The stability of the engine crankshaft rotating speed, reducing noise and vibration during the outboard motor operation indicate good lubricating properties of the engine and transmission oil used. There are shown the results of comparative tests of outboard motors SEA-PRO T2.5 (two-stroke) and YAMAHA F4B (four-stroke) using the most common on the market lubricating oil and the oil produced by KUPPER, LLC (Russia). There are presented the illustrations of outboard motors SEA-PRO T2.5 and YAMAHA F4B. The tests were carried out in the laboratory conditions in a small experimental pool by specialists from the Outboard Motors Research and Production Laboratory of Astrakhan State Technical University. The control and measuring devices used were: a tachometer SEA-PRO TSP-02, a gas analyzer “Infrakar-A-02” with a built-in tachometer. It has been inferred that there is a direct dependence of the crankshaft rotation speed during long-term operation of the outboard motor on the quality and characteristics of the lubricating oil. The probability of the research on stationary propulsion systems in water transport is indicated.


2021 ◽  
Author(s):  
Larisa Belchinskaya ◽  
Konstantin Zhuzhukin ◽  
A. Bushueva ◽  
Nikolai Jujukin

This paper shows the stages of developing an eco-friendly composite composition (PKS) for impregnating railway sleepers made of birch wood, which has high water and moisture resistance. Used oils were selected for the study: mineral engine oil, transmission oil, sunflower oil, corn oil. The used oils were compared with the oil liquid ZHTK-2, which is widely used for impregnating railway sleepers, according to the following indicators: the content of the impregnating composition; water absorption and swelling of the impregnated wood after 30 days of standing in water in the radial and tangential directions. According to the sum of the obtained indicators, the spent mineral engine oil (OMM) was chosen as the basis of the PKS, flour of various types of wood (coniferous or deciduous), flour of oak, birch or pine bark was proposed as a filler. The greatest effect was obtained when introducing coniferous wood flour (MDH) in the amount of 1% of the mass of the OMM into the OMM. At the same time, the content of the impregnating composition in the wood increases from 43 to 70%, water absorption decreases (by 63.8%) and the swelling of the wood in the tangential and radial directions. When comparing the target values for the oil composition (OMM+MDX) and the oil liquid ZHTK-2, it was found that the content of the impregnating composition is 10.6% higher than for ZHTK-2, water absorption is reduced by 6.8%.


2021 ◽  
Vol 101 (3) ◽  
pp. 70-80
Author(s):  
I. Mykytiy ◽  

The work is aimed at solving the problem of reducing energy losses in transmission units of hoisting machines for repairing wells. Method of rapid heating and maintaining the optimal temperature in the transmission units of lifting units by using the heat of the exhaust gases was proposed. Analysis of features of a design of transmissions of lifting installations for repair of wells is carried out. Studies of viscosity-temperature characteristics of modern transmission oils and temperature regime in transmission units have been performed. A mathematical model of energy release in transmission units during the operation of lifting units is proposed. Installed energy consumption for friction in the gears of the transmission units. Friction energy losses in bearings of transmission mechanisms of lifting units are determined. A method for reducing energy losses in transmission units of hoisting installations for well repair is proposed. Experimental studies of the implementation of the proposed method of reducing energy losses in transmission units. Dependence of power losses in the gearbox of lifting units depending on the temperature and grade of transmission oil is established. The dependence of power losses in the gearbox of the lifting unit of the UPA 60 / 80 A model depending on the temperature and grade of transmission oil is obtained. The results of calculations of fuel consumption in the gearbox of the lifting unit of the UPA 60 / 80A model with different power drives and at different temperatures of transmission oil are given


2021 ◽  
Vol 99 (1) ◽  
pp. 51-58
Author(s):  
V. Aulin ◽  
◽  
S. Lysenko ◽  
A. Hrinkiv ◽  
V. Slon ◽  
...  

The bases for creation of theoretical bases of tribotechnologies of running-in and restoration of conjugations of details of systems and units of motor transport and mobile agricultural machinery are defined. The specifics of selective transfer on the surface of contacting parts of machines and creation of servito films, formation of coatings during running-in and restoration from antifriction materials, which are a part of additives in motor and transmission oil, are considered. A number of tribophysicochemical processes that occur in the conjugations of parts materials and how they affect the creation of tribotechnologies of running-in and restoration are clarified. The creation of tribotechnologies using geomodifiers is considered. It is proposed to build a single theory of tribotechnologies of running-in and recovery on the basis of the mechanism of triboplasm formation in the conjugations of parts of systems and units of machines. It is also proposed to add to this the thermofluctuation theory of S.M. Zhurkova taking into account the change of dilaton and compression bonds of atoms of materials of tribocouples of details with creation of local areas of deformations of compression and tension and zones of thermoplastic deformation.


2021 ◽  
pp. 44-46
Author(s):  
G.Z. Huseynov ◽  
◽  
Sh.N. Salmanova ◽  
T.A. Aliyev ◽  
M.M. Seyidov ◽  
...  

In the presence of KU-2 as a catalyst the reactions of carboxymetyl-amethylalkylphenol with isoamyl and octyl alcohols were studied, as a result of which alkoxycarbonyl-methylaminometyl-alkylphenol has been obtained. The effect of obtained compounds on antiwear, antiscuffing and anticorrosion properties of ТС-14.5 transmission oil has been researched. It was revealed that alkoxycarbonyl-methylaminomethylalkylphenols show high antiwear, antiscuffing and anticorrosion performance. These compounds almost eliminate ТС-14.5 oil corrosivity in the 5 % concentration and improve its antiwear and antiscuffing properties as well.


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