scholarly journals Modeling working processes of self-regenerating filters functioning in lubricating systems of ship diesels

2020 ◽  
Vol 2020 (2) ◽  
pp. 69-80
Author(s):  
Gennadiy Petrovich Kicha ◽  
Sergey Petrovich Boyko ◽  
Paul Petrovich Kicha
Keyword(s):  
Internal Combustion Engines ◽  
Filter Design ◽  
Operating Conditions ◽  
The Self ◽  
Coarse Grained ◽  
Engine Oil ◽  
Fuel Quality ◽  
Hydrodynamic Modes ◽  
Self Cleaning ◽  
Working Processes

The article highlights the urgency of the research of working processes of a self-cleaning filter designed to purify the engine oil in the internal combustion engines. There was carried out experimental modeling of countercurrent regeneration of self-cleaning filters used in fuel preparation and diesel lubrication systems on ships. The layout of the unit for modeling the working processes of self-regenerating filters includes a service tank, a hydraulic motor with a stirrer, a pump, a hydraulic cylinder, a receiver of compressed air, a waste tank, a filtering element, shut-off and pneumatic control equipment, a pollution gauge, a temperature sensor, and other elements. A planning matrix is formed, and the experiment results on evaluating the efficiency of the self-regenerating filters are illustrated. The main factors of the regeneration coefficient are considered. There are presented the dependencies of evaluating the process effectiveness and predicting the life of filters between dry cleanings. The methods of calculating the regeneration parameters of automated filters based on the SRF-60 and SRFD-120 modules have been presented, which allows choosing the hydrodynamic modes and backwash time of filter elements taking into account the operating conditions of oil filters. The influence of the filtering process regeneration efficiency identified by the specific intensity of the removal of the dispersed phase from the oil, hydrodynamics (Reynolds number) and the relative backwash time, the adhesive properties of sludge, the filter design, and dispersion of the pollution are analyzed. The evidence of the validation of the calculated experimental dependences obtained from the laboratory tests of the filter model and their compliance with the results of field tests of self-cleaning filters on ships are presented. The possibility of calculating and adjusting the off-line operation of the self-cleaning filter in the lubrication systems of marine diesel engines is presented subject to diesel forcing, fuel quality and lubricants used, oil aging, additives wear and contamination by coarse-grained mechanical impurities.

scholarly journals Расчет параметров регенерации самоочищающихся фильтров смазочных систем судовых дизелей

2020 ◽  
Author(s):  
G.P. Kicha ◽  
A.V. Nadezkin ◽  
S.P. Boiko
Keyword(s):  
Internal Combustion Engines ◽  
Oil Pollution ◽  
Internal Combustion ◽  
Coarse Grained ◽  
Engine Oil ◽  
Battery Life ◽  
Combustion Engines ◽  
Adhesive Properties ◽  
Efficient Operation ◽  
Self Cleaning

Обоснована актуальность исследований рабочих процессов самоочищающегося фильтра, предназначенного для очистки моторного масла в двигателях внутреннего сгорания. Приведена методика расчета параметров регенерации автоматизированных фильтров, сформированных на базе модулей СРФ-60 и СРФД-120, позволяющая осуществлять выбор гидродинамического режима и времени обратной промывки фильтрующих элементов с учетом условий функционирования маслоочистителей. Выделено влияние на эффективность регенерации фильтровального процесса, идентифицированного удельной интенсивностью удаления дисперсной фазы из масла, гидродинамики (числа Рейнольдса) и относительного времени обратной промывки, адгезионных свойств отложений, особенностей конструкции фильтра, дисперсности загрязнений. Представлены доказательства адекватности расчетно-экспериментальных зависимостей, полученных по результатам лабораторных испытаний модели фильтра, и соответствия их данным эксплуатационных натурных испытаний самоочищающихся фильтров на судах. Показана возможность расчета и корректировки срока автономной работы самоочищающегося фильтра в смазочных системах судовых дизелей с учетом форсирования дизеля, качества применяемых горюче-смазочных материалов, интенсивности старения масла, срабатывания входящих в него присадок и уровня загрязнения крупнозернистыми механическими примесями. Дано заключение, что комбинированная очистка масла в двигателях внутреннего сгорания с использованием байпасной схемы сепарирования и центрифугирования облегчает функционирование полнопоточно подключаемых в систему смазки автоматизированных фильтров и позволяет увеличить срок автономной работы их до 5 тыс. ч. При этом надежная и эффективная работа очистителей возможна в самых жестких условиях загрязнения и старения масла.The relevance of research on the working processes of a self-cleaning filter intended for cleaning engine oil in internal combustion engines is substantiated. A methodology for calculating the regeneration parameters of automated filters generated by the SRF-60 and SRFD-120 modules is presented. The influence on the efficiency of the regeneration of the filtering process, which is identified by the specific intensity of the removal of the dispersed phase from the oil, the hydrodynamics (Reynolds number) and the relative backwash time, the adhesive properties of the sediments, the design features of the filter, and the dispersion of contaminants are highlighted. The evidence of the adequacy of the calculated experimental dependencies obtained from laboratory tests of the filter model and their compliance with the data of field tests of self-cleaning filters on ships is presented. The possibility of calculating and adjusting the autonomous work of the self-cleaning filter in the lubrication systems of marine diesel engines is shown taking into account the forcing of the diesel engine, the quality of the fuels and lubricants used, the aging rate of the oil, the operation of its additives and the level of contamination with coarse-grained mechanical admixture. It is concluded that the combined cleaning of oil in internal combustion engines using a bypass separation and centrifugation scheme facilitates the functioning of fully automated filters in the lubrication system and allows them to increase their battery life up to five thousand hours. Reliable and efficient operation of the purifiers is possible in the harshest conditions of oil pollution and aging.

Self-Cleaning Oil Bath Engine Intake Filter for Locomotive Applications

1968 ◽  
Vol 90 (1) ◽  
pp. 49-53
Author(s):  
R. W. Sexton ◽  
J. K. Sparrow
Keyword(s):  
Diesel Engines ◽  
Performance Standards ◽  
Operating Conditions ◽  
The Self ◽  
Air Filters ◽  
Air Filter ◽  
Air Cleaning ◽  
The North ◽  
Locomotive Engine ◽  
Self Cleaning

The self-cleaning oil bath air filter has been used for over 30 years for filtering intake air for large, stationary diesel engines. It has proven successful under all types of operating conditions, from the hot, sandy climate of the Southwest to the subfreezing temperatures in the North. Only recently has it been adapted successfully to locomotive applications. Previous performance standards required of locomotive engine air filters did not require the high filtering performance of this type of filter. Only since the introduction of the high horsepower diesel locomotives, where air filter standards have been considerably increased beyond the abilities of conventional locomotive filters, has the self-cleaning principle of good oil bath filtration become feasible. The purpose of this paper is to show how, through design, testing, and applications, this type of oil bath principle can be adapted to meet the critical air-cleaning needs of today’s modern locomotive engines.

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.

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 STAND FOR RESEARCH PARAMETERS OF ELEMENTS OF LUBRICATION SYSTEMS OF HIGH-SPEED INTERNAL COMBUSTION ENGINES

2021 ◽  
pp. 73-79
Author(s):  
D.V. Kurnosenko ◽  
V.P. Savchuk ◽  
E.V. Belousov ◽  
А.К. Dzygar ◽  
A.I. Kotov
Keyword(s):  
High Speed ◽  
Internal Combustion Engines ◽  
Diagnostic System ◽  
Internal Combustion ◽  
Operating Conditions ◽  
Engine Oil ◽  
Operating Parameters ◽  
Combustion Engines ◽  
Lubrication System ◽  
Oil Pump

The issues of studying the operating parameters of the elements of lubrication systems for high-speed internal combustion engines preceded the creation of the stand. The engine lubrication system D-246.4 was chosen as a prototype. With the help of this stand it became possible to study the lubrication system for the following characteristics: change the performance of the engine oil pump D-246.4, change and control the engine oil temperature, control the pressure drop on the oil filter, control the engine oil flow, throttle oil at the inlet to the oil pump and on the conditional supply line to the friction units, measuring the vacuum of the system on the suction of the oil pump and recording the parameters of the pulsation of the oil pressure generated by the oil pump. To build mathematical models of the components in the lubrication systems of marine internal combustion engines there is a need to determine their operating parameters. In real operating conditions, such measurements cannot be obtained due to the lack of the necessary test equipment (TE) and the possibility of its installation. The authors describe in detail all the components of the stand for studying the parameters of the elements of lubrication systems of high-speed internal combustion engines, their technical characteristics, describes the diagnostic complex, which recorded the results of research, the results of measuring engine oil pressure pulsation. The stand is used to study the operating parameters of the oil pump and filter used for water. Signals are registered using the Autoscanner diagnostic system. The diagnostic complex is a 64-channel oscilloscope that is connected to a personal computer. This stand for studying the operating parameters of the elements of the lubrication system provides sufficient opportunities to simulate the operating conditions of the elements of the supply and purification of oil and register them both visually and with digital sensors and diagnostic system Autoscanner, digital oscilloscopes or other measuring instruments capable of recording and storing the received data.

Experimental Evaluation of Turbo-Matching Appropriateness of B60J67, B60J68, A58N70 and A58N72 Turbo-Chargers for a Commercial Vehicle Engine

2018 ◽  
Vol 6 (11) ◽  
pp. 71
Author(s):  
Badal Dev Roy ◽  
R. Saravanan
Keyword(s):  
Internal Combustion Engines ◽  
Perfect Match ◽  
Engine Performance ◽  
Operating Conditions ◽  
Data Logger ◽  
Negative Effects ◽  
Road Test ◽  
The Road ◽  
A Charge ◽  
All Speeds

The Turbocharger is a charge booster for internal combustion engines to ensure best engine performance at all speeds and road conditions especially at the higher load.  Random selection of turbocharger may lead to negative effects like surge and choke in the breathing of the engine. Appropriate selection or match of the turbocharger (Turbomatching) is a tedious task and expensive. But perfect match gives many distinguished advantages and it is a one time task per the engine kind. This study focuses to match the turbocharger to desired engine by simulation and on road test. The objective of work is to find the appropriateness of matching of turbochargers with trim 67 (B60J67), trim 68 (B60J68),  trim 70 (A58N70) and trim 72 (A58N72) for the TATA 497 TCIC -BS III engine. In the road-test (data-logger method) the road routes like highway and slope up were considered for evaluation. The operating conditions with respect various speeds, routes and simulated outputs were compared with the help of compressor map.

Anodic voltammetry of pyrazolone derivatives with the help of the self-cleaning rotating electrode

1987 ◽  
Vol 52 (1) ◽  
pp. 66-71 ◽  
Author(s):  
Vesselin C. Noninski ◽  
Emanuel B. Sobowale
Keyword(s):  
Electrochemical Oxidation ◽  
The Self ◽  
Good Reproducibility ◽  
Rotating Electrode ◽  
Pyrazolone Derivatives ◽  
Self Cleaning ◽  
Anodic Voltammetry

Nine pyrazolone derivatives have been studied by anodic voltammetry using gold self-cleaning rotating electrode (SRE). Voltamograms of good reproducibility are presented. On the basis of voltammetric data a mechanism is proposed for the electrochemical oxidation of sodium 1-phenyl-2,3-dimethyl-4-(N-methylamino)pyrazol-5-one-N-methansulphonate and 1-phenyl-2,3-dimethyl-4-(dimethylamino)pyrazol-5-one in protic medium.

scholarly journals Study on the self-cleaning and thermal reducing abilities of TiO2 coated clay roof tile

2021 ◽  
Author(s):  
Maulida Rahayu ◽  
Sujito ◽  
Edy Wibowo ◽  
S. Sutisna
Keyword(s):  
The Self ◽  
Roof Tile ◽  
Self Cleaning

scholarly journals Self-Cleaning Polyester Fabric Prepared with TiOF2 and Hexadecyltrimethoxysilane

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 387
Author(s):  
Euigyung Jeong ◽  
Heeju Woo ◽  
Yejin Moon ◽  
Dong Yun Lee ◽  
Minjung Jung ◽  
...  
Keyword(s):  
Methylene Blue ◽  
Contact Angle ◽  
Treatment Method ◽  
Polyester Fabric ◽  
Anatase Tio2 ◽  
The Self ◽  
Water Contact ◽  
Direct Fluorination ◽  
Tomato Ketchup ◽  
Self Cleaning

In this study, self-cleaning polyester (PET) fabrics were prepared using TiOF2 and hexadecyltrimethoxysilane(HDS) treatment. TiOF2 was synthesized via direct fluorination of a precursor TiO2 at various reaction temperatures. The prepared PET fabrics had superior photocatalytic self-cleaning properties compared with anatase TiO2/HDS-treated PET fabrics under UV and sunlight with 98% decomposition of methylene blue. TiOF2/HDS-treated PET fabrics also had superior superhydrophobic self-cleaning properties compared with anatase TiO2/HDS-treated PET fabrics with a 161° water contact angle and 6° roll-off angle. After the self-cleaning tests of the non-dyed TiOF2/HDS-treated PET fabrics, we prepared dyed TiOF2/HDS-treated PET fabrics to test practical aspects of the treatment method. These PET fabrics were barely stained by tomato ketchup; even when stained, they could be self-cleaned within 4 h. These results suggest that practical self-cleaning PET fabrics with superhydrophobicity and photocatalytic degradation could be prepared using TiOF2/HDS-treatment.

The effects of DLC-coated journal on improving seizure limit and reducing friction under engine oil lubrication

2021 ◽  
pp. 146808742110129
Author(s):  
Hidemi Ogihara ◽  
Takumi Iwata ◽  
Yuji Mihara ◽  
Makoto Kano
Keyword(s):  
Internal Combustion Engines ◽  
Fuel Efficiency ◽  
Internal Combustion ◽  
Engine Oil ◽  
Combustion Engines ◽  
Main Bearing ◽  
Dlc Coating ◽  
Lubrication Regime ◽  
Mixed Lubrication Regime ◽  
Reduce Emissions

Internal combustion engines have been improved markedly in recent years through efforts to conserve resources, reduce emissions and improve fuel efficiency. In this regard, the authors have been working to reduce friction and improve the seizure properties of the crankshaft main journal and main bearing. These mechanical components of internal combustion engines incur large friction losses. In order to reduce friction, journals have been coated with a diamond-like carbon (DLC) coating, which has been reported to reduce friction in the fluid lubrication regime in recent years. Another current issue of journals and bearings is the need to improve seizure resistance. Therefore, these properties were evaluated for material combinations of aluminium alloy bearings and DLC-coated journals, which have low affinity. The results revealed that friction was reduced under a fluid lubrication regime and seizure resistance was improved under a mixed lubrication regime.

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