scholarly journals THE PRODUCTION OF PLASTIC LUBRICANTS BASED ON REGENERATED SYNTHETIC MOTOR OILS USED IN UZBEKISTAN

2021 ◽  
pp. 39-43
Keyword(s):  
Dispersion Medium ◽  
Strength Properties ◽  
Engine Oils ◽  
Base Oils ◽  
Synthetic Motor ◽  
Basic Characteristics ◽  
Plastic Lubricants ◽  
Motor Oils

The purpose of the study is to increase the efficiency of using used engine oils as a dispersion medium for plastic lubricants. It has been established that the removal of resins, carbenes, carbides and asphaltenes from used synthetic motor oils makes it possible to obtain an oil base close to commercial base oils in terms of basic characteristics; refined oils also have a high margin of operational properties. The composition of lubricants for analogues of Lithol-24 and Solidol-Z based on refined used engine oils has been determined. Anticorrosive, adhesive and strength properties of lubricant compositions are considered.

scholarly journals RTIES OF ENGINE OILS AND THE WEAR OF ENGINE FRICTION UNITS WHEN ULTRASONIC OIL TREATMENT

2021 ◽  
pp. 155-161
Author(s):  
А.А. СИМДЯНКИН ◽  
И.А. УСПЕНСКИЙ ◽  
М.Н. СЛЮСАРЕВ
Keyword(s):  
Surface Tension ◽  
Ultrasonic Treatment ◽  
Engine Oil ◽  
Motor Oil ◽  
Frequency Range ◽  
Engine Oils ◽  
Ultrasound Frequency ◽  
Friction Units ◽  
Synthetic Motor ◽  
Motor Oils

Проблема и цель. Целью настоящего исследования является оценка влияния частоты ультразвука на смазочные свойства моторных масел и износ узлов трения двигателей при ультразвуковой обработке масел. Методология. Предметом исследований является ультразвуковая обработка моторных масел и вызываемые ею изменения износа узлов трения. Были проведены следующие эксперименты: оценка влияния частоты ультразвука на изменение коэффициента поверхностного натяжения моторных масел при их ультразвуковой обработке; оценка влияния частоты ультразвуковой обработки смазки на износ образцов пар трения при износных испытаниях образцов на машине трения 2070 СМТ 1М. Обработка моторного масла ультразвуком проводилась с помощью экспериментального устройства для генерации ультразвука переменной частоты. Обработке подвергались моторные масла: масло моторное «LukoilDIESELOIL» 10W-40 минеральное; масло моторное «SHELL Helix HX7 Diesel» 10W-40 полусинтетическое; масло моторное «ZIC X7 Diesel» 10W-40 синтетическое. Результаты. Были получены расчетно-экспериментальные зависимости коэффициента поверхностного натяжения от частоты ультразвукового сигнала для минерального, полусинтетического и синтетического моторных масел, а также зависимости фактора износа образцов пар трения от частоты ультразвука длясинтетического моторного масла.Определен диапазон частот ультразвука (17-44 кГц), при котором ультразвуковая обработка синтетического моторного масла дает наибольшее снижение износа пар трения Заключение. На основании проведенных исследований рекомендуется проводить обработку моторного масла ультразвуком в диапазоне частот от 17 до 44 кГц. Рекомендуется также продолжение работ по доработке устройства для генерации ультразвука оптимальной частоты и адаптации его в систему смазки реальных дизельных автотракторных двигателей. Problem and purpose. The purpose of this study was to assess the efect of ultrasound frequency on lubricating properties of engine oils and the wear of friction units of engines when ultrasonic treatment of oils. Methodology. The subject of the research was the ultrasonic treatment of engine oils and the changes in the wear of friction units caused by it. The following experiments were carried out: evaluation of the efect of the ultrasound frequency on the change in the surface tension coefcient of motor oils when their ultrasonic treatment; evaluation of the efect of the frequency of ultrasonic treatment of the lubricant on the wear of samples of friction pairs during wear tests of samples on a 2070 SMT 1M friction machine. Ultrasonic treatment of engine oil was carried out using an experimental device for generating ultrasound of variable frequency. The following engine oils were processed: motor oil "Lukoil DIESEL OIL" 10W-40 mineral; motor oil "SHELL Helix HX7 Diesel" 10W-40 semi-synthetic and motor oil "ZIC X7 Diesel" 10W-40 synthetic. Results. Authors got calculated and experimental dependences of the surface tension coefcient on the frequency of an ultrasonic signal for mineral, semi-synthetic and synthetic motor oils, as well as the dependence of the wear factor of samples of friction pairs on the frequency of ultrasound for synthetic engine oil. The frequency range of ultrasound (17-44 kHz) was determined, in which the ultrasonic treatment of synthetic motor oil gave the greatest reduction in the wear of friction pairs. Conclusion. Based on the studies carried out, it is recommended to treat engine oil with ultrasound in the frequency range from 17 to 44 kHz. It is also recommended to continue work on improving the device for generating ultrasound of the optimal frequency and adapting it to the lubrication system of real diesel automotive engines.

Study of Dielectric and Physicochemical Parameters Dependencies in Engine Oils during Exploitation

2016 ◽  
Vol 838 ◽  
pp. 71-77
Author(s):  
Nikolay Sugatov ◽  
Anvar Ashatovich Khaziev
Keyword(s):  
Correlation Analysis ◽  
Physicochemical Properties ◽  
Physicochemical Parameters ◽  
Dielectric Parameters ◽  
Engine Oils ◽  
Motor Oils

This paper gives a study of working oil with the dielectric parameters determining device. The correlation analysis of the dielectric and the physicochemical properties of motor oils was carried out.

Improving the Performance of Gas Engine Oils: A New Generation of Geo-Specific Additive Systems

2003 ◽  
Author(s):  
Laurent Chambard ◽  
John Smythe
Keyword(s):  
High Performance ◽  
Additive Technologies ◽  
Performance Limits ◽  
Base Oil ◽  
Gas Engine ◽  
Engine Oils ◽  
Base Oils ◽  
Beaten Track ◽  
Excellent Control ◽  
New Generation

Additive technologies able to successfully lubricate gas engines have been available for many years, but in recent years the acceleration of both commercial and technical demands placed on gas engine lubricants has highlighted the performance limits of traditional additive solutions. One of these limits is the ability to reach long and very long oil drains, required by an increasing number of operators. Since traditional additive chemistries on conventional base oil systems have reached their limits in that respect, focus has been increasingly placed on using higher performance base oils so that longer oil drains can be reached. However, traditional additive chemistries have often proved to struggle in these higher performance base oils, particularly in the aspect of deposit control — demonstrating that a new generation of additive systems for the formulation of gas engine oils is needed. The authors present one such generation of additive systems, developed around off-the-beaten-track detergent technology; providing superior control of oxidation and deposits. Such additive systems can be used either in conventional base oil systems with improved drain interval, or in high performance base oil systems with very long drain interval and excellent control of deposits. Besides the description of the chemistry involved, the authors also present a methodology of performance evaluation in the laboratory, and compare this methodology with the performance perceived in the field.

The effect of the polarity of the dispersion medium on the structure and properties of plastic lubricants

1972 ◽  
Vol 8 (6) ◽  
pp. 432-436
Author(s):  
I. G. Fuks ◽  
Yu. N. Shekhter ◽  
T. V. Fedorova ◽  
B. N. Kartinin
Keyword(s):  
Dispersion Medium ◽  
Structure And Properties ◽  
Plastic Lubricants

An Experimental Study on Basic Characteristics of a Magneto-Rheological Grease Damper

2015 ◽  
Author(s):  
Yusuke Sato ◽  
Hiroshi Sodeyama ◽  
Makoto Hayama ◽  
Shin Morishita
Keyword(s):  
Vibration Control ◽  
Dispersion Medium ◽  
Fine Particles ◽  
Active Vibration Control ◽  
Test Results ◽  
Active Vibration ◽  
Derived Design ◽  
Basic Characteristics ◽  
Fluid Dampers ◽  
Magneto Rheological

As one of the semi-active vibration control devices for mechanical or civil structures, magneto-rheological fluid dampers have been enthusiastically studied and developed since the 1990s. A new magneto-rheological material for such dampers has been developed to provide a practical solution to the significant common drawback of sedimentation of ferromagnetic fine particles in the fluid. Industrial grease is used as the dispersion medium in this material. The thickener to be added in the grease to control the rheological properties seems to prevent separation of the particles from the dispersion medium. Several performance tests were carried out with a proto-type of the damper with the newly developed magneto-rheological grease, namely, the magneto-rheological grease damper. Based on the test results, the energy dissipation capabilities of the damper and the basic characteristics of the magneto-rheological grease were verified to provide semi-active vibration control. Moreover, the analytically-derived design formulae for the damper were improved on the basis of the test results.

scholarly journals Plant for cleaning oils from oxidation products

2021 ◽  
Vol 264 ◽  
pp. 04043
Author(s):  
Nargiza Kholikova ◽  
Bakhodir Khakimov ◽  
Saydilla Alikulov ◽  
Nargiza Ravshanova ◽  
Ajargul Mambetsheripova
Keyword(s):  
Operating Mode ◽  
Research Process ◽  
Oxidation Products ◽  
Oil Composition ◽  
Cleaning Efficiency ◽  
Friction Process ◽  
Engine Oils ◽  
Agricultural Work ◽  
Oil Purification ◽  
Motor Oils

The study aims to substantiate the parameters and operating mode of the oil purification device from oxidation products to improve the efficiency of the use of lubricants. The methods of mathematical analysis and mathematical statistics, comparative comparison, generalization, and testing methods of agricultural machinery are used in the research process. It is established that engine oils are intensively polluted by oxidation products during processing, thereby accelerating the friction process due to the overload of tractor engines. During the performance of agricultural work in the oil composition, the content of oxidation products in the form of carbon, carbon dioxide, and asphalt products increases by 1.2%. Analytical coupling dependences for the process of cleaning motor oils from oxidizing products are obtained, and the dependence of the cleaning efficiency on the device parameters is established. The developed device consists of a container for collecting oils, a steam generator, a container for a sump mixer, a separate container for pure and sedimentary oils, and a vessel for re-collecting acetone. An installation has been developed to implement the technology of collecting and renewing oils in the conditions of the farm. In this case, the amount of contamination and the composition of oils is determined, and the operating mode of the device is selected for their resumption.

scholarly journals Rheological profiles of blends of the new and used motor oils

2013 ◽  
Vol 61 (1) ◽  
pp. 115-121 ◽  
Author(s):  
Vojtěch Kumbár ◽  
Adam Polcar ◽  
Jiří Čupera
Keyword(s):  
Mathematical Model ◽  
Temperature Dependence ◽  
Dynamic Viscosity ◽  
Rheological Behaviour ◽  
Engine Oil ◽  
Engine Oils ◽  
Used Engine Oil ◽  
And Performance ◽  
Increasing Temperature ◽  
Motor Oils

The objective of this paper is to find changes of a rheological profile of the new engine oil if the used engine oil will be add. And also find changes of a rheological profile of the used engine oil if the new engine oil will be add. For these experiments has been created the blends of the new and the used engine oil. The temperature dependence of the density [kg.m−3] has been measured in the range of −10 °C and +60 °C. The instrument Densito 30PX with the scale for measuring engine oils has been used. The dynamic viscosity [mPa.s] has been measured in the range of −10 °C and +100 °C. The Anton Paar digital viscometer with the concentric cylinders geometry has been used. In the accordance with the expected behaviour, the density and the kinematic viscosity of all oils was decreasing with the increasing temperature. To the physical properties has been the mathematical models created. For the temperature dependence of the density has been used the linearly mathematical model and the exponentially mathematical model. For the temperature dependence of the dynamic viscosity has been used the polynomial 6th degree. The knowledge of density and viscosity behaviour of an engine oil as a function of its temperature is of great importance, especially when considering running efficiency and performance of combustion engines. Proposed models can be used for description and prediction of rheological behaviour of engine oils.

scholarly journals Design of Laboratory Test Equipment for Automotive Oil Filters to Evaluate the Technical Life of Engine Oil

2021 ◽  
Vol 11 (2) ◽  
pp. 483
Author(s):  
Hujo Ľubomír ◽  
Jablonický Juraj ◽  
Markovič Jaromír ◽  
Tulík Juraj ◽  
Simikić Mirko ◽  
...  
Keyword(s):  
Laboratory Test ◽  
Operating Conditions ◽  
Test Equipment ◽  
Engine Oil ◽  
Laboratory Measurements ◽  
Laboratory Equipment ◽  
Engine Oils ◽  
Simultaneous Testing ◽  
Motor Oils ◽  
Filtration Capacity

The main aim of the article is to present the design of laboratory test equipment, which is appropriate for monitoring the efficiency of oil filters and the system for evaluating the technical life of engine oils in terms of possible extension of service intervals. The functionality of the designed laboratory test equipment for the filtration of motor oils was verified by a practical experiment with a verification measurement and assessment of the suitability of the hydraulic circuit elements and the designed sensing equipment. The laboratory equipment enables the testing of oil filters with different filtration capacity during simultaneous testing in two separate hydraulic circuits with differently contaminated engine oil, while it enables laboratory measurements to be performed while simulating operating conditions.

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