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.

scholarly journals Verification Measurement of Laboratory Test Equipment for Evaluation of Technical Properties of Automotive Oil Filters

2021 ◽  
Vol 11 (18) ◽  
pp. 8435
Author(s):  
Ľubomír Hujo ◽  
Juraj Jablonický ◽  
Juraj Tulík ◽  
Ján Kosiba ◽  
Jerzy Kaszkowiak ◽  
...  
Keyword(s):  
Laboratory Test ◽  
Physicochemical Properties ◽  
Motor Vehicle ◽  
Operating Conditions ◽  
Test Equipment ◽  
Engine Oil ◽  
Oil Contamination ◽  
Testing Time ◽  
Test Circuit ◽  
Technical Properties

By simulating the operating conditions, it is possible to verify and evaluate the technical properties of motor vehicle oil filters and the functionality of the designed equipment. Contaminated engine oil from operation was used with MANN W950/26 oil filter and a CNH Industrial 2992242 oil filter in the test circuit. Before use, the level of engine oil contamination in the test circuit was determined by evaluating the physicochemical properties. The laboratory test equipment also allows monitoring the technical life of oil filters, with variously contaminated engine oil, with the possibility of extending engine oil change service intervals depending on changes in the physicochemical properties of engine oil and filter efficiency. These laboratory tests can be performed in parallel in two hydraulic circuits, which can significantly reduce the testing time of the filter capabilities of oil filters, without the risk of engine damage, provided that the tests were performed under operating conditions. The results of the evaluation of the filtration capacity of oil filters can be used in the design of new filter materials, but also with a suitably determined methodology of oil filter replacement and engine oil change interval, it is possible to extend replacement intervals, which has a significant benefit not only from an economic but also ecological point of view. The result of the measurements is the confirmation of the functionality of the device with the possibility of simulating the operating conditions, at different degrees of oil contamination, at different operating temperatures and using different oil filters.

scholarly journals Micro-Pitting and Wear Assessment of PAO vs Mineral-Based Engine Oil Operating under Mixed Lubrication Conditions: Effects of Lambda, Roughness Lay and Sliding Direction

Lubricants ◽  
2019 ◽  
Vol 7 (5) ◽  
pp. 42 ◽  
Author(s):  
Aleks Vrček ◽  
Tobias Hultqvist ◽  
Yannick Baubet ◽  
Marcus Björling ◽  
Pär Marklund ◽  
...  
Keyword(s):  
Bearing Steel ◽  
Mixed Lubrication ◽  
Operating Conditions ◽  
Engine Oil ◽  
Engine Oils ◽  
Rolling Contacts ◽  
Steel Surfaces ◽  
Wear Damage ◽  
Lubrication Conditions ◽  
Ball On Disc

Under certain operating conditions, rolling contacts have been shown to experience some challenges when lubricated with engine oils containing zinc dialkyldithophosphate (ZDDP) anti-wear additive. In order to better understand the main damage mechanisms during various operating conditions, further studies are needed. This article studies micro-pitting and wear damages of bearing steel surfaces under mixed lubrication conditions in a ball-on-disc setup, lubricated with different engine oils. Based on the results, micro-pitting and wear damage is shown to be highly case-dependent. In general, PAO-based engine oil tends to eliminate micro-pitting damage compared to mineral-based engine oil at less severe lubricating conditions. Moreover, a critical lambda was found for both oils, where the highest micro-pitting damage was observed.

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.

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 Determination of the Degree of Consumption (DoC) of Lube Engine Oils Using Fluorescence Spectroscopy

2018 ◽  
Vol 31 (1) ◽  
pp. 124
Author(s):  
Rawnaq Qahtan Abdul Kareem ◽  
Khalid W. Salih Al-Janabi
Keyword(s):  
Fluorescence Spectroscopy ◽  
Fluorescence Intensity ◽  
Oil Quality ◽  
Emission Spectra ◽  
Major Effect ◽  
Engine Oil ◽  
Local Market ◽  
Engine Oils ◽  
Used Oil ◽  
Motor Oils

    The accreditation of a fast, inexpensive, and simple way to discriminate between different kinds of oils and their efficacy “degree of consumption (DoC)” has been developed. The fluorescence spectroscopy provides a reliable method for oil inspection without resorting to tedious separation. Different new and used oil samples available in the local Iraqi market were investigated. While the challenge is to build a directory containing data of all the oils available in the local market. This method expected to control the falsified (forged) trademarks of motor oils and to discriminate between different oils. The excitation-emission spectra of oil samples were determined in the range of 200 – 600 nm. The effect of the presence of trace metals on the fluorescence intensity of oils was considered by adding few milligrams of (Cu, Al, Fe) to the diluted oil solution. No major effect noticed on fluorescence intensity. The research suggests installing a simple Spectrofluorometer into vehicles to check the DoC of the oil regularly and to notify the driver exactly when to replace the engine oil. The obtained results indicate the applicability to execute such gadget to be installed in the vehicles for routine detection of the engine oil quality and its degree of consumption DoC. As well as demonstrate the potential of the technique in oil identification and could be further developed.

scholarly journals Measurement of flow characteristics of a gear hydraulic pump by simulating the operating load of the tractor’s hydraulic system

2021 ◽  
Vol 338 ◽  
pp. 01010
Author(s):  
Ľubomír Hujo ◽  
Juraj Jablonický ◽  
Sylwester Borowski ◽  
Jerzy Kaszkowiak ◽  
Matej Michalides
Keyword(s):  
Laboratory Test ◽  
Physical Properties ◽  
Hydraulic System ◽  
Flow Characteristics ◽  
Operating Conditions ◽  
Test Equipment ◽  
Working Fluid ◽  
Maximum Pressure ◽  
Hydraulic Pump ◽  
Data Set

The results of the work include research on changes in flow characteristics of gear hydraulic pump QHD 17 by simulating operating conditions on laboratory test equipment with assessment of influence of transmission-hydraulic fluid MOL Farm NH Ultra on technical and operational properties of hydraulic pump QHD 17. The laboratory test equipment makes it possible to repeatedly simulate real conditions under which the hydraulic system of the agricultural tractor operates, or to simulate the load with maximum pressure. By monitoring the change in the flow of the hydraulic pump at precisely determined intervals, which were 0 and 125 hours worked, the influence of the physical properties of the working fluid on the flow properties of the hydraulic pump was assessed and the measured data set was evaluated by mathematical-statistical analysis. Based on the physical properties of the tested MOL Farm NH Ultra fluid, which were determined from the samples taken at precisely determined intervals, no negative effect of the fluid itself as well as its properties on the flow efficiency of hydraulic pump QHD 17 was found.

scholarly journals Assessment of the intensity of engine oil contamination during operation

2021 ◽  
Vol 2131 (3) ◽  
pp. 032061
Author(s):  
V Zhukov ◽  
O Melnik ◽  
E Khmelevskaya
Keyword(s):  
Internal Combustion Engines ◽  
Operating Time ◽  
Operating Conditions ◽  
Engine Oil ◽  
Oil Contamination ◽  
Engine Oils ◽  
Average Operating ◽  
Average Operating Time ◽  
Dispersing Ability ◽  
Physical And Chemical

Abstract The acceleration of internal combustion engines leads to an increase in thermal and mechanical loads on the most critical parts. To ensure the required resource indicators in conditions of increased loads, it is necessary to use high-quality lubricants, the requirements for the operational properties of which are also steadily increasing. In order to ensure the necessary physical and chemical characteristics of engine oils, additives are introduced into their composition, but during operation the quality of engine oil decreases, the reasons for this are both the destruction of additives, and the accumulation of dirt particles in the oil and the ingress of fuel and coolant into the oil. The conducted studies are devoted to determining the intensity of engine oil contamination under operating conditions in the Wärtsilä 6L20 engine lubrication system and the effectiveness of the dispersing additives contained in the oil. Samples of Petro Canada and TARO oils brands were used as prototypes at the beginning of the operational period, at the time of average operating time and at the time of oil change. The dispersing ability of the oil was determined by the method of assessing the oil stain. According to the results of the research, it is concluded that when the properties of the oil change as a result of contamination, their dispersing ability remains satisfactory. This result can serve as a justification for extending the service life of engine oil, provided that its properties are monitored during operation.

ABOUT THE QUESTION OF CHEMMOTOLOGY OF MOTOR OILS AND THEIR APPLICATION FOR GAS ENGINE

2015 ◽  
Vol 2 (2) ◽  
pp. 522-527
Author(s):  
Толмачев ◽  
D. Tolmachev ◽  
Голубенко ◽  
Natalya Golubenko
Keyword(s):  
Internal Combustion Engine ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Quantitative Description ◽  
Internal Combustion ◽  
Engine Oil ◽  
Combustion Engines ◽  
Gas Engine ◽  
Engine Oils ◽  
Motor Oils

The article describes some of chemmotology processes in systems: engine oil – elements of internal combustion engines. Motor oil is regarded as an important element in the construction of an internal combustion engine, and it is necessary to make quantitative description of its condition which changing over time for its operability forecasting. In connection with the increasing number of vehicles with gas engines, the topics of necessity of special engine oils use for the gas internal combustion engine and of monitoring of their quality indicators are mentioned

Features of the modern process of evaluation of motor oils References

2021 ◽  
Vol 05 ◽  
pp. 12-14
Author(s):  
A.L. Chudinovskikh ◽  
◽  
D.V. Boykov ◽  
Keyword(s):  
Internal Combustion Engine ◽  
Internal Combustion Engines ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Point Of View ◽  
Operating Conditions ◽  
Engine Oil ◽  
Engine Part ◽  
General Aspects ◽  
Motor Oils

Changes in the design and parameters of modern internal combustion engines in order to achieve high economic, environmental, and other indicators lead to a tightening of the operating conditions of engine oil. Engine oil is an integral part of the internal combustion engine and from the point of view of modern views is positioned as an engine part. Currently, all internal combustion engine oils are generally tested, classified and evaluated according to generally accepted criteria and parameters. Without specifying and analyzing a whole layer of materials related to research, testing, evaluation of motor oils accumulated over more than a century, the article briefly discusses some general aspects of the classification and evaluation of oils for automotive equipment in leading foreign countries and the Russian Federation.

scholarly journals Design of Laboratory Test Equipment for Testing the Hydrostatic Transducers

2021 ◽  
Vol 24 (1) ◽  
pp. 35-40
Author(s):  
Jozef Nosian ◽  
Ľubomír Hujo ◽  
Marcin Zastempowski ◽  
Romana Janoušková
Keyword(s):  
Laboratory Test ◽  
Flow Rate ◽  
Operating Conditions ◽  
Test Equipment ◽  
Testing Time ◽  
Economic Costs ◽  
Simultaneous Observation ◽  
Hydraulic Fluids ◽  
Different Types ◽  
Basic Parameters

AbstractThe article presented describes a new design of measuring chains in laboratory test equipment, which are used for testing the hydrostatic transducers and hydraulic fluids. Laboratory test equipment allows simultaneous observation of parameters of hydrostatic transducers and hydraulic fluids by simulating the operating conditions under laboratory conditions, what can significantly reduce the testing time and economic costs. The new design functionality was verified via measurement of the basic parameters of hydrostatic transducers and changing the load of hydraulic fluids. Based on the results measured, the flow efficiency of tested hydrostatic transducer UD-25R was calculated and compared with the transducer parameters specified by the manufacturer using different types of operating hydraulic fluids. Verification measurements of the unloaded hydrostatic transducer were performed at various rotation speeds: Q250 = 5.694 dm3·rpm at speed of n1 = 250 rpm; Q500 = 12.286 dm3·rpm at speed of n2 = 500 rpm; Q750 = 18.747 dm3·rpm at speed of n3 = 750 rpm. Based on the hydrostatic transducer flow rate, the UD-25R transducer flow efficiency was determined: at n1 = 250 rpm, the flow efficiency was η250 = 0.8946; at n2 = 500 rpm, the efficiency was η500 = 0.9651; at n3 = 750 rpm, the flow efficiency was η750 = 0.9812.

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