Influence of waste of lubricating oil on the intensity of its aging in a marine trunk diesel engine

2021 ◽  
pp. 56-65
Author(s):  
М.И. Тарасов ◽  
Г.П. Кича ◽  
А.В. Надежкин
Keyword(s):  
Diesel Engine ◽  
Internal Combustion Engines ◽  
Fuel Oil ◽  
Engine Oil ◽  
Lubricating Oil ◽  
Engine Fuel ◽  
Operating Life ◽  
Resource Saving ◽  
Aging Model ◽  
Operating Modes

Представлены результаты моделирования старения моторного масла в судовом тронковом дизеле при разном его угаре с идентификацией влияния на степень окисления, срабатывание присадок (по щелочности), накопление нерастворимых продуктов, рост кислотности и смолообразования форсировки двигателя и качества применяемых горюче-смазочных материалов. Показана рациональность исследования процесса старения смазочного масла в циркуляционной системе смазки одноцилиндрового отсека дизеля в лабораторных условиях, что позволяет выдерживать контролируемые параметры комплекса «дизель – топливо – масло» (ДТМ) и снизить затраты на моторные испытания. По результатам расчетно-эксперементального исследования получена модель старения смазочного масла по удельным, приходящимся на единицу мощности двигателя показателям, которая позволяет прогнозировать его состояние в зависимости от срока службы и своевременно отбраковывать. Показана адекватность модели старения по экспериментальным данным использования моторного масла в судовом полноразмерном тронковом дизеле повышенной форсировки. Разработанная модель по указанным направлениям старения позволяет определить состав и режимы функционирования комплекса ДТМ, при которых обеспечивается ресурсосберегающее маслоиспользование в двигателях внутреннего сгорания. This paper presents the results of an engine oil aging model in a marine trunk diesel engine under different combustion conditions with characterization of the effect on the oxidation rate, the actuation of additives (by alkalinity), the accumulation of non-soluble products, an increase in acidity and gumming of the engine boost and the quality of the utilized fuels and lubricants. The efficiency of the lubricating oil aging process study in the circulating lubrication system of a single-cylinder diesel compartment in laboratory conditions is also shown in the article, this allows to maintain the controlled parameters of the «diesel – fuel – oil» system and to reduce the cost of motor tests. Based on the results of a computational-experimental study a lubricating oil aging model was obtained in terms of specific indicators per unit of engine power, which allows to predict its condition depending on the operating life and to promptly discard it. The adequacy of the aging model is based on experimental data of the engine oil use in a ship's full-size trunk diesel engine with increased boost. The developed model of the indicated directions of aging makes it possible to determine the composition and operating modes of the «engine-fuel-oil» system, which ensures resource-saving oil use in internal combustion engines.

scholarly journals METHODS OF INCREASING EFFICIENCY OF THIN CLEARING ENGINE OIL BY IMPROVING FILTERING NONWOVENS IN OIL PURIFIERS OF MARINE DIESEL ENGINS

2018 ◽  
pp. 31-41
Author(s):  
Andrei Veniaminovich Nadezkin ◽  
Gennadiy Petrovich Kicha ◽  
Liudmila Anatolievna Semeniuk
Keyword(s):  
Service Life ◽  
Diesel Engines ◽  
Internal Combustion Engines ◽  
Specific Capacity ◽  
Engine Oil ◽  
Lubricating Oil ◽  
Resource Saving ◽  
Marine Diesel ◽  
Oil Purification ◽  
Filtering Element

The article presents the results of motor tests of mass production filtering elements and new ones with improved performance in marine diesel engines. The filtering elements help to increase the efficiency of cleaning the engine oil and to lessen the engine wear and carbonation. The extended diesel service life is directly connected to the quality of oil purification. There has been carried out the analysis of developing filter technology regarding to engine oil cleaning in lubrication systems of ship medium-speed internal combustion engines equipped with different oil cleaners on the vessels of the Far Eastern basin. There have been presented the methods of increasing the throughput, dirt capacity and service life, as well as the fineness and completeness of sifting filtering elements due to the use of new filter materials. The dependence of the oil filtration rate on the efficiency of its purification is shown. Oil purification process can be intensified by means of decreasing the rate of oil filtering. To obtain the optimal filtering rate it is necessary to choose the appropriate size of a filtering element. Nowadays, the production technology of filtering elements is constantly improving, parameters of filtering materials are being upgraded, such as porosity, specific capacity, etc. There have been proposed measures to improve the hydraulic and filtering characteristics of nonwovens from cellulose and synthetic fibers of different thicknesses with different fillers and binders, which increases the permeability of papers, the number of pores per unit surface and a narrower distribution in diameter. New scientific and technical solutions are presented, which increase the efficiency of oil use in diesel engines. The ways of reducing the wear rate of the main parts in the engine due to full-flow fine cleaning of lubricating oil providing economical resource-saving operation of the trunk diesel engines are shown. The Russian industry manufactures the full-flow filtering elements and filtering materials relevant to the best international analogues.

Simulation of lubricating oil centrifugal separator performance index influence on marine diesel engine wear

2021 ◽  
pp. 79-85
Author(s):  
Н.С. Молоков ◽  
Г.П. Кича ◽  
М.И. Тарасов
Keyword(s):  
Diesel Engine ◽  
Performance Index ◽  
Internal Combustion Engines ◽  
Oil Quality ◽  
Lubricating Oil ◽  
Centrifugal Separator ◽  
Resource Saving ◽  
Autonomous Operation ◽  
High Purification ◽  
Engine Wear

Представлена методика подбора центробежного сепаратора для комбинированных систем тонкой очистки моторного масла в двигателях внутреннего сгорания. Предложен показатель (индекс производительности сепаратора), который характеризует интенсивность разделения гетерогенных систем центрифугированием. Показана зависимость скорости изнашивания основных деталей дизеля от качества используемых горюче-смазочных материалов и интенсивности очистки масла (индекса производительности сепаратора). Рассмотрены преимущества комбинированной системы очистки смазочного масла, включающие в себя центробежный сепаратор, обеспечивающий очистку масла от нерастворимых загрязнений мелкодисперсной фазы работающий совместно с саморегенерирующимся фильтром. Благодаря такому сочетанию обеспечивается минимальной изнашивание пар трения дизеля. Преимущество данного метода очистки также заключается в возможности обеспечения автономной работы механизмов смазочной системы при сохранении высокой эффективности очистки. С помощью экспериментального моделирования определено минимальное значение индекса производительности центробежного сепаратора, необходимое для стабилизации изнашивания деталей дизеля и достижения ресурсосберегающего маслоиспользования. Проиллюстрировано сравнение результатов моделирования с экспериментальными данными. Methods of centrifugal separator selection for lubricating oil combined purification systems of internal combustion engines are represented. Purification intensity parameter (performance index) for description of heterogeneous medium separation is offered. The relation between separation intensity (separator performance index) and engine wear is shown as well as its dependence on fuel and lubricating oil quality. Advantages of lubricating oil combined cleaning method by means of centrifugal purifier, used for insoluble particles removal together with the self-regenerating filter are represented. Due to their combination the minimum wear of diesel engine friction coupling can be achieved. Benefits of the method lie in autonomous operation of lubricating system for a long period of time together with high purification efficiency. Minimum value of separator performance index, required to stabilize engine parts wear and achieve resource-saving oil use has been determined by means of experimental design. Simulation results have been compared with experimental data and effect of comparison has been represented.

DIESEL ENGINE OPERATION IN USE OF FUEL WITH ADDITIVES

2018 ◽  
pp. 18-24
Author(s):  
Petar Kazakov ◽  
Atanas Iliev ◽  
Emil Marinov
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Diesel Fuel ◽  
Internal Combustion Engines ◽  
Experimental Studies ◽  
Combustion Engines ◽  
Engine Operation ◽  
Factors Affecting ◽  
Operating Modes ◽  
Positive Effects

Over the decades, more attention has been paid to emissions from the means of transport and the use of different fuels and combustion fuels for the operation of internal combustion engines than on fuel consumption. This, in turn, enables research into products that are said to reduce fuel consumption. The report summarizes four studies of fuel-related innovation products. The studies covered by this report are conducted with diesel fuel and usually contain diesel fuel and three additives for it. Manufacturers of additives are based on already existing studies showing a 10-30% reduction in fuel consumption. Comparative experimental studies related to the use of commercially available diesel fuel with and without the use of additives have been performed in laboratory conditions. The studies were carried out on a stationary diesel engine СМД-17КН equipped with brake КИ1368В. Repeated results were recorded, but they did not confirm the significant positive effect of additives on specific fuel consumption. In some cases, the factors affecting errors in this type of research on the effectiveness of fuel additives for commercial purposes are considered. The reasons for the positive effects of such use of additives in certain engine operating modes are also clarified.

Effect of hexagonal boron nitride nanoparticles as an additive on the extreme pressure properties of engine oil

2016 ◽  
Vol 68 (4) ◽  
pp. 441-445 ◽  
Author(s):  
Muhammad Ilman Hakimi Chua Abdullah ◽  
Mohd Fadzli Bin Abdollah ◽  
Noreffendy Tamaldin ◽  
Hilmi Amiruddin ◽  
Nur Rashid Mat Nuri
Keyword(s):  
Diesel Engine ◽  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Experimental Studies ◽  
Engine Oil ◽  
Lubricating Oil ◽  
Extreme Pressure ◽  
Content Type ◽  
Load Carrying ◽  
Sonication Technique

Purpose This paper aims to investigate the effect of hexagonal boron nitride (hBN) nanoparticles on extreme pressure (EP) properties when used as an additive in lubricating oil. Design/methodology/approach The nano-oil was prepared by dispersing an optimal composition of 0.5 vol. per cent of 70 nm hBN in SAE 15W-40 diesel engine oil using a sonication technique. The tribological testing was performed using a four-ball tribometer according to the ASTM standard. Findings It was found that the nano-oil has a potential to decelerate the seizure point on the contact surfaces, where higher EP can be obtained. More adhesive wear was observed on the worn surfaces of ball bearing lubricated with SAE 15W-40 diesel engine oil as compared with the nano-oil lubrication. Originality/value The results of the experimental studies demonstrated the potential of hBN as an additive for improving the load-carrying ability of lubricating oil.

Developing of High Power Density Diesel Engine Oil

2011 ◽  
Vol 233-235 ◽  
pp. 171-174
Author(s):  
Fu Chuan Huang ◽  
Yun Guo Xie ◽  
Mao Li Yang ◽  
Hui Juan Luo ◽  
Pan Tong ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Power Density ◽  
High Power ◽  
Chemical Properties ◽  
Engine Oil ◽  
Lubricating Oil ◽  
High Power Density ◽  
Operating Characteristics ◽  
Compact Structure ◽  
Base Oil

For high power density diesel engine operating characteristics and its unique compact structure, the development of new high power density diesel engine oil referred to the latest diesel engine oil standard GB 11122-2006. Through the comprehensive assessment of physical and chemical properties, the composite of poly a-olefin (PAO) and polymer esters was determined as base oil,and added high-performance additives. This oil developed has clean dispersion, antioxidation, anti-wear , anti-corrosion and other properties. the lubricating oil can well satisfy the performance requirements of high power density diesel engine.

scholarly journals OPTIMIZATION OF WASTE MOTOR OIL IN SHIP DIESEL WITH HIGH BOOST BY WEAR CRITERION

2018 ◽  
pp. 78-86
Author(s):  
Maxim Igorevich Tarasov ◽  
Georgy Alexandrovich Gauk ◽  
Liudmila Anatolievna Semeniuk
Keyword(s):  
Diesel Engine ◽  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Optimal Level ◽  
Engine Oil ◽  
Resource Saving ◽  
Engine Wear ◽  
The Impact

The results of modeling the impact of oil burning on the condition of the ship forced trunk piston diesel engine when using lubricants with different operating properties. The dependence of wear rate on oil fume, the quality of used lubricants and marine diesel forcing is obtained by modeling wear using the theory of planning experiments. The area of minimal wear has been determined. There has been detected the most efficient waste oil providing favorable conditions for resource-saving operation of the internal combustion engine. It is inferred that reduction of engine oil fume changes the main parameters of its aging. At the same time, the intensity of oil aging in main directions and of engine wear reduce from 0.75 to 2.25 g/(kW∙h), whereas the fume increases. Its further increase is accompanied by an increase in the rate of oil aging and engine wear. The detected "fracture" depending on И( g y) after passing the border g yopt = 2.25-2.5 g/(kW∙h) is stipulated by different ratio of oil exchange in the lubrication system and the ingress of gases into the crankcase. There has been determined the degree of oil burning, at which sludging and lacquer formation of the internal combustion engine is least intense. The smallest carbon deposits on pistons and in the crankcase of the engine can be observed when the diesel engine is operating in the zone of optimal carbonation. Experimentally, the dependence of tribotechnical properties, in particular, wear of insoluble products of oil aging has been detected at different degrees of oil burning. It is revealed that these characteristics also depend on the quality of the used fuels and lubricants and the conditions of formation and turnover of the oil film on the mirror of the cylinder, the thermal effect on it of the engine workflow. The result of simulation is the prediction of resource-saving operation of marine trunk diesel engines by maintaining oil fume at the optimal level.

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