scholarly journals EFFECT OF WASTE ENGINE OIL ON AGEING INTENSITY IN A MARINE DIESEL ENGINE WITH HIGH BOOST

2019 ◽  
pp. 71-77
Author(s):  
Liudmila Anatolievna Semeniuk ◽  
Maxim Igorevich Tarasov
Keyword(s):  
Diesel Engine ◽  
Engine Oil ◽  
Experiment Planning ◽  
Specific Rate ◽  
Motor Oil ◽  
Waste Engine Oil ◽  
Piston Group ◽  
The Matrix ◽  
Marine Diesel ◽  
Cylinder Piston

The key directions of the oil aging process are closely interrelated with its fumes and this is once again confirmed by the motor experiment. The degree of oxidation of the engine oil subjected to identification by increasing the concentration of insoluble impurities identifies the thermo-oxidative destruction of the present hydrocarbons. The results of modeling the process of wear of parts of the cylinder-piston group of marine diesel are considered. Through the application of the theory of experiment planning, the range of minimum wear is revealed, the dependence is focused on the values of the quality indicators of the used fuels and lubricants, the engine boost and the amount of engine oil burn. The change in the values in the main directions of oil aging as a result of reducing its fumes was noted. There has been revealed engine oil burnout in which the operation of the diesel engine is accompanied by less carbon and varnish formation on its pistons and the wear rate of the elements of the cylinder-piston group, the engine oil being in excellent condition in terms of the composition of aging products. Oil aging rate is determined at each stage of trial, according to sample analysis. There is given the matrix of experiment planning, as well as results of its processing. There are established the equations usable in trunk diesel operation that help to analyze general and specific rate of motor oil ageing, the initial values being values of oil waste, properties of fuels and lubricants and engine forcing. Motor oil of М-14-Г2 grade (circulating system) has been recommended to use for efficient and durable operation of ship diesels with average and low boost. For high powered engines operating on deep refining fuels it is possible to use the following oil grades: М-14-Д2 (cl 20) и М-14-Д2 (cl 30) with high neutralizing and motor qualities.

scholarly journals Методика для трибодиагностики судовых крейцкопфных дизелей на основе имитационного моделирования

2020 ◽  
Author(s):  
A.V. Golenishev ◽  
A.V. Nadezkin ◽  
M.E. Starchenko
Keyword(s):  
Diesel Engine ◽  
Simulation Model ◽  
Technical Condition ◽  
Operating Conditions ◽  
Marine Diesel Engine ◽  
Threshold Values ◽  
Piston Group ◽  
Marine Diesel ◽  
Cylinder Piston ◽  
Wear Products

Рассматриваются подходы по определению пороговых значений концентрации продуктов износа в отработанном цилиндровом масле, характеризующие переход объекта диагностирования судового крейцкопфного дизеля из одного технического состояния в другое. Показано, что существующие методики не учитывают индивидуальные особенности и техническое состояние деталей цилиндропоршневой группы. Предложено для решения задачи их трибодиагностики использовать разработанную имитационную модель, позволяющую провести моделирование процесса изнашивания цилиндровой втулки и поршневых колец судового дизеля и на основании полученных расчетов определить концентрацию продуктов износа поступивших в отработанное цилиндровое масло при различной скорости изнашивания трущихся деталей. Данные о фактической концентрации продуктов износа в отработанном цилиндровом масле в дальнейшем соотносятся с результатами моделирования, что позволяет оценить техническое состояние деталей цилиндропоршневой группы двигателя. Представлены результаты моделирования по определению пороговых значений концентрации продуктов износа в отработанном цилиндровом масле, характеризующее переход судового дизеля из исправного в несправное техническое состояние. Даны практические рекомендации по выбору пороговых значений содержания продуктов износа в отработанном цилиндровом масле для различных типов судовых крейцкопфных дизелей и условий их эксплуатации.The article examines approaches to determine the threshold values of the concentration of wear debris in used cylinder oil that characterize the transition of a ship crosshead diesel engine unit under test from one technical condition to another. It is shown that the existing methods do not take into account the individual characteristics and technical condition of the parts of the cylinder-piston group. To solve the problem of tribodiagnostics, it is proposed to use the developed simulation model, which allows modeling the wear process of the cylinder bushing and piston rings of a marine diesel engine and, based on the obtained results, determining the concentration of wear products issued in the used cylinder oil at different wear rates of the moving parts. The data on the actual concentration of wear products in the used cylinder oil are subsequently correlated with the simulation model results, which makes it possible to evaluate the technical condition of the parts of the engine cylinder-piston group. The article presents the results of modeling of threshold values determination of the concentration of wear products in used cylinder oil, that measure the transition of a marine diesel engine from a working condition to a malfunctioning technical condition. Practical recommendations are given on choosing threshold values for the concentration of wear products in used cylinder oil for various types of marine crosshead diesel engines and their operating conditions.

scholarly journals Research and development of commercially viable lubricants to intensify working life of marine diesel engines and cylinder piston group in internal combustion engines

2021 ◽  
Vol 2021 (4) ◽  
pp. 62-74
Author(s):  
Vasiliy Aleksandrovich Chanchikov ◽  
Ivan Nikolaevich Guzhvenko ◽  
Alexandr Ivanovich Andreev ◽  
Marina Aleksandrovna Shulimova ◽  
Sergey Aleksandrovich Svekolnykov
Keyword(s):  
Diesel Engines ◽  
Engine Oil ◽  
Lubricating Oil ◽  
Mechanical Mixing ◽  
Friction Modifier ◽  
Marine Engine ◽  
Piston Group ◽  
Molybdenum Diselenide ◽  
Marine Diesel ◽  
Cylinder Piston

The paper presents the results of studying the influence of variable characteristics of lubricating oils for marine diesel engines (concentration of layered friction modifier in lubricating oil, viscosity of lubricating oil, contact pressure in the friction zone) on the tribological parameters of parts of the cylinder-piston group of marine diesel engines. There are considered the aspects of increasing the reliability and wear resistance of the cylinder-piston group of marine diesel engines when a layered friction modifier is added to the base lubricating oil in a concentration of 1.5 vol.%. There have been carried out the comparative tribological studies of M-16G2CS lubricating oil including an additive based on molybdenum diselenide. Dependences of the wear of parts of the cylinder-piston group of a marine engine on different parameters of the studied lubricants are shown. The wear rate of experimental samples in conditions of variable characteristics of lubricants has been studied. According to the tribological studies of lubricants and structural materials, the tribological rating of lubricating compositions containing M16G2CS marine engine oil as a base and a layered friction modifier - molybdenum diselenide as a tribologically active additive was built. The test tool for the antiwear ability of lubricants is a friction machine of an original design with abraded samples according to the “ball-cylinder” contact scheme. Mechanical mixing of the lubricating medium of “oil + additive” type on the RPU-0.8-55A rotary-pulsating unit was one of the variable parameters in the tests. The tribological efficiency of the studied antiwear additive varies depending on the type of mixing of the additive solution before adding to the base lubricating oil and makes 13-54% (the difference in the diameter of the wear spot of the sample) for mechanical mixing, and for rotary-pulsation mixing - 45-56%.

scholarly journals Исследование расхода масла автотракторными двигателями

2020 ◽  
Author(s):  
B.S. Antropov ◽  
V.V. Gumenniy ◽  
V.V. Kapralov ◽  
V.A. Generalov
Keyword(s):  
Free Market ◽  
Engine Oil ◽  
Motor Oil ◽  
Oil Consumption ◽  
Piston Cylinder ◽  
Piston Group ◽  
Crankcase Oil ◽  
Cylinder Piston ◽  
Tractor Equipment ◽  
Factory Standard

В условиях рыночной экономики автотранспорт является основным по перевозке грузов. К нему предъявляются серьёзные требования как по надёжности, так и по экономичности, в частности по расходу топлива и картерного масла двигателей. Рассмотрены вопросы по определению расхода масла двигателя. Установлено, что под расходом масла автотранспортных двигателей понимается его долив от замены до замены. Долив масла до нормы связан с угаром в процессе эксплуатации автотракторной техники. Установлено, что расход масла является величиной переменной, возрастающей по мере увеличения пробега двигателя, вследствие износа деталей цилиндропоршневой группы ДВС. Определено также, что при предельном расходе масла, составляющим тройное увеличение заводского норматива для новых двигателей (перед запуском их в эксплуатацию), эксплуатация должна быть прекращена по экономическим соображениям. Как правило, в данном случае на двигателях заменяются детали цилиндропоршневой группы (поршни, гильзы и поршневые кольца). Расход масла на долив используется и для диагностирования двигателей, а именно по его значению можно определить состояние деталей цилиндропоршневой группы. Авторами приведены методы углублённого диагностирования с целью определения цилиндров, имеющих неисправности.Under free market conditions motor transport is the main transport of goods. Serious requirements are applied to it both in terms of reliability and efficiency in particular for fuel consumption and crankcase oil for engines. The issues of determining the engine oil consumption are considered. It was also established that the consumption of motor oil is understood as topping it up from replacement to replacement. Topping up the oil to normal is associated with burning while in operation of motor-and-tractor equipment. It has been established that oil consumption is a variable increasing as the engine mileage increases due to the wear of parts of the cylinder-piston ICE group. It is determined that with a maximum oil consumption amounting to a triple increase in the factory standard for new engines (before putting them into operation) operating should be stopped for economic reasons. As a rule in this case parts of the cylinder-piston group (pistons, sleeves and piston rings) are replaced on the engines. Oil consumption for topping up is also used to diagnose engines, namely by its value it is possible to determine the condition of parts of the piston-cylinder group. The methods of in-depth diagnosis in order to identify cylinders with malfunctions are presented by the authors.

scholarly journals Assessment of the impact of the technical condition of the cylinder-piston group parts on nitrogen oxide emissions

2021 ◽  
Vol 2131 (5) ◽  
pp. 052058
Author(s):  
O Roslyakova ◽  
V Zaitsev ◽  
D Panov
Keyword(s):  
Diesel Engine ◽  
Diesel Engines ◽  
Technical Condition ◽  
Working Process ◽  
Mixture Formation ◽  
Special Equipment ◽  
Harmful Emissions ◽  
Marine Diesel ◽  
Cylinder Piston ◽  
The Impact

Abstract Nowadays, a lot is paid to environmental protection issues, including those related to reducing emissions from ships of the sea and river fleet, which is reflected in many works. Constant control over the content of harmful emissions in the environment forces us to deal with the issues of reducing emissions from diesel engines at the design stages and during operation. The solution to this problem allows us to consider 2 directions: constructional and the use of special equipment for capture and neutralization. In the best case, a combined method can be used, i.e. constructional with the use of capturing equipment for harmful components in diesel exhaust gases. This paper presents an analysis of the influence of various factors that reduce the load on the atmospheric air from nitrogen oxides of marine diesel engines, namely, from the operating settings of the diesel engine and its wear. On the ships of the river fleet, diesel engines are used with various mixture formation with volumetric, volumetric-film, vortex mixture formation. The leader in the listed group is the volumetric mixture engines. The paper provides an assessment of the research carried out to analyze various methods of influencing the working process of a diesel engine - the type of mixture formation, wear of the cylinder sleeve in order to determine their influence on the formation of NOx emissions.

Assessment of pyrolysis waste engine oil as an alternative fuel source for diesel engine

2020 ◽  
Vol 141 (6) ◽  
pp. 2277-2293 ◽  
Author(s):  
A. Zahir Hussain ◽  
A. Santhoshkumar ◽  
Anand Ramanathan
Keyword(s):  
Diesel Engine ◽  
Alternative Fuel ◽  
Engine Oil ◽  
Waste Engine Oil ◽  
Fuel Source

scholarly journals Oil Spill Removal from Water Surfaces using Zinc Ferrite Magnetic Nanoparticles as A Sorbent Material

2021 ◽  
pp. 718-728
Author(s):  
Ibrahim Ali Amar ◽  
Sawsan Faraj ◽  
Mabroukah Abdulqadir ◽  
Ihssin Abdalsamed ◽  
Fatima Altohami ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Diesel Engine ◽  
Oil Spill ◽  
Zinc Ferrite ◽  
Magnetic Force ◽  
Gasoline Engine ◽  
Engine Oil ◽  
Motor Oil ◽  
Used Motor Oil ◽  
Water Surfaces

In this study, zinc ferrite magnetic nanoparticles (ZnFe2O4, ZFO MNPs) were employed as a sorbent for the removal of oil spill from water surfaces. ZFO MNPs were synthesized via a sol-gel process and characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray powder diffraction (XRD). Both the apparent density and magnetic force were determined. ZFO MNPs presented a considerable magnetic force (40.22 mN) and an adequate density (0.5287 g/cm3), which are important for the magnetic separation and flotation. Four oil samples (gasoline engine oil, crude oil, used motor oil and diesel engine oil) were used to investigate the gravimetric oil removal capability of ZFO MNPs. The oil sorption capacities were found to be 23.00-6.13, 27.65-7.42, 22.62-7.01 and 30.54-9.93 g/g for crude, diesel engine, gasoline engine, and used motor oil, respectively. The current findings demonstrate that ZFO MNPs exhibit good properties (e.g., magnetic and density) and can be used as a sorbent for oil spill cleaning-up from water surfaces.

scholarly journals Application to Diesel Engine of Mixed Fuel Comprising DME and A-Heavy Oil (Marine Diesel Engine Oil)

2005 ◽  
Vol 40 (6) ◽  
pp. 820-826
Author(s):  
Tomohisa Dan ◽  
Masataka Hashimoto ◽  
Ichiro Asano ◽  
Takurou Nakamura
Keyword(s):  
Diesel Engine ◽  
Heavy Oil ◽  
Engine Oil ◽  
Marine Diesel Engine ◽  
Mixed Fuel ◽  
Marine Diesel

Influence of cavitation on the working surfaces of the cylinder&piston group of a diesel engine during maintenance

2021 ◽  
pp. 30-34
Author(s):  
Keyword(s):  
Diesel Engine ◽  
Fuel Consumption ◽  
Evaporation Rate ◽  
Gaseous Medium ◽  
Carbon Deposits ◽  
Fuel Droplets ◽  
Emulsified Fuel ◽  
Piston Group ◽  
Cylinder Piston ◽  
Engine Power

It is established, that the destruction of carbon deposits when the engine is running on a water-fuel emulsion occurs due to the phenomenon of micro-impact of emulsified fuel droplets, the evaporation rate of which depends on their diameter, pressure and amplitude of the gaseous medium. As a result of the removal of carbon deposits in the engines, there is an increase in the average compression value for the engine cylinders by 8 % and the engine power by 11 %, as well as a decrease in the specific fuel consumption by 10 % and the smoke of the exhaust gases by 16 %. Keywords: engine, water-fuel emulsion, micro-impact, emulsified fuel, compression. [email protected]

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