scholarly journals A Study on Nearly Non-oxidation Characteristics of Lubricating Oil and No Waste Oil in Marine Diesel Engines.

2001 ◽  
Vol 36 (4) ◽  
pp. 240-248
Author(s):  
Tadanori Azuma ◽  
Morio Sumimoto ◽  
Isao Kimura
Keyword(s):  
Diesel Engines ◽  
Lubricating Oil ◽  
Waste Oil ◽  
Oxidation Characteristics ◽  
Marine Diesel

scholarly journals Semi-permanent Use of Lubricating Oil and No Waste Oil in Marine Diesel Engines

2000 ◽  
Vol 35 (3) ◽  
pp. 178-189 ◽  
Author(s):  
Tadanori AZUMA ◽  
Morio SUMIMOTO ◽  
Isao KIMURA
Keyword(s):  
Diesel Engines ◽  
Lubricating Oil ◽  
Waste Oil ◽  
Marine Diesel

scholarly journals Influence of lubricating oil centrifugal separation intensity in combined cleaning systems on marine diesel engine

2020 ◽  
Vol 2020 (3) ◽  
pp. 23-32
Author(s):  
Nikolai Sergeevich Molokov ◽  
Gennadiy Petrovich Kicha ◽  
Andrei Veniaminovich Nadezkin
Keyword(s):  
Diesel Engines ◽  
Experimental Simulation ◽  
Lubricating Oil ◽  
Centrifugal Separation ◽  
Fuel Quality ◽  
Resource Saving ◽  
Minimum Value ◽  
Marine Diesel ◽  
Engine Wear ◽  
Capacity Index

The article considers the rationality of combined lubricating oil cleaning system in the automatically operated marine diesel engines. The system includes a self-recovering filter and a self-cleaning centrifugal purifier. This combination is found to obtain resource-saving oil using coupled with minimum engine wear and increased reliability. The full-flow filtration of oil in a die-sel engine lubricating system is necessary to protect its friction couples (bearings) from abrasive wear. Centrifugal separation contributes deep oil purification i.e. removal of insoluble impurities reducing lubricating oil service life. By means of experimental simulation there has been found a minimum value of centrifugal purifier capacity index, when engine wear reaches the lowest level and keeps stable. The dependence of engine wear on the fuel quality and centrifugal purification intensity represented by centrifugal purifier capacity index is displayed. The adequacy variance was calculated, the adequacy of the found model being checked by using Fisher criterion. The experimental design and processing of the results have been carried out using orthogonal central composite plan of the second order. Specificity of polynomial when all the points of extremum show the minimum value of engine wear was presented. The model is designed to select the proper oil purifier for forced marine diesel engines with average and increased revolutions.

Waste oil-based alternative fuels for marine diesel engines

2016 ◽  
Vol 153 ◽  
pp. 28-36 ◽  
Author(s):  
Gorka Gabiña ◽  
Leopoldo Martin ◽  
Oihane C. Basurko ◽  
Manuel Clemente ◽  
Sendoa Aldekoa ◽  
...  
Keyword(s):  
Diesel Engines ◽  
Alternative Fuels ◽  
Waste Oil ◽  
Marine Diesel

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 Выбор индекса производительности центробежного сепаратора для комбинированных маслоочистительных комплексов судовых тронковых дизелей

2020 ◽  
Vol 45 (4) ◽  
Author(s):  
Keyword(s):  
Diesel Engines ◽  
Performance Index ◽  
High Speed ◽  
Engine Oil ◽  
Lubricating Oil ◽  
Lubrication System ◽  
Centrifugal Separator ◽  
Resource Saving ◽  
Marine Diesel ◽  
Engine Wear

Показана перспективность комбинированной очистки моторного масла в судовых тронковых дизелях с использованием саморегенерирующихся фильтров и сепараторов. Этот метод очистки особенно эффективен для форсированных высокоавтоматизированных двигателей с низким угаром масла, работающих на высоковязких остаточных топливах. Обосновывается важность надежной защиты подшипников двигателя от абразивного изнашивания полнопоточным фильтрованием масла. Центробежный сепаратор, работающий по байпасной схеме, эффективно удаляет из системы смазки мелкодисперсную фазу нерастворимых загрязнений, что обеспечивает функционирование и повышает автономность саморегенерирующегося фильтра, а также замедляет старение смазочного масла. Доказывается необходимость подбора сепаратора по удельному индексу производительности, обеспечивающему ресурсосберегающее маслоиспользование в системе «дизель–топливо–масло– очистка». Новизна экспериментального моделирования эффективности этой системы состоит в оценке с помощью лабораторной моторной установки трибологических показателей отработавшего в судовом дизеле смазочного масла, отражающих взаимодействие звеньев рассматриваемой системы, и установлении их связи с изнашиванием двигателя. Эффективность системы идентифицирована по критерию изнашивания дизеля, что позволяет использовать ее расчетно-экспериментальную модель для определения параметров центробежного сепаратора – с тем, чтобы он удовлетворял требованиям рассматриваемых взаимодействующих звеньев. Модель трансформирована в выражение для расчета удельного, приходящегося на единицу мощности двигателя индекса производительности сепаратора, обеспечивающего минимальное изнашивание двигателя, бессменную работу смазочного масла и автономный срок службы саморегенерирующегося фильтра не менее 3 тыс. ч. Полученные рекомендации по подбору сепаратора в системе смазки двигателя с полной реализацией достоинств автоматизированной тонкой очистки моторного масла комбинированием фильтрования и центрифугирования применимы для судовых дизелей средней и повышенной частоты вращения мощностью до 20 тыс. кВт. Ключевые слова: ресурсосберегающее маслоиспользование, саморегенерирующийся фильтр, центробежный сепаратор, изнашивание дизеля, комбинированная очистка масла, смазочная система, индекс производительности сепаратора, оптимизация сепарирования масла The prospects of combined cleaning of engine oil in ship trunk diesel engines using self-regenerating filters and separators are shown. This cleaning method is especially effective for high-powered, highly automated engines with low oil waste, operating on high-viscosity residual fuels. The importance of reliable protection of engine bearings from abrasive wear by full-flow oil filtration is substantiated. The centrifugal separator, operating according to the bypass scheme, effectively removes the finely dispersed phase of insoluble contaminants from the lubrication system, which ensures the functioning and increases the autonomy of the self-regenerating filter, and also slows down the aging of the lubricating oil. The necessity of selecting a separator according to the specific performance index, which ensures resource-saving oil use in the “dieselfuel-oil-cleaning” system, is proved. The novelty of the experimental modeling of the efficiency of this system consists in evaluating the tribological indicators of the lubricating oil used in a marine diesel engine, reflecting the interaction of the links under consideration, on a laboratory motor unit, and establishing their connection with engine wear. The efficiency of the presented system is identified by the criterion of diesel wear, which makes it possible to use its computational and experimental model to determine the parameters of a centrifugal separator so that it meets the requirements of the considered interacting links. The model has been transformed into an expression for calculating the specific index of the separator performance per unit of engine power, which ensures minimum engine wear, permanent operation of the lubricating oil and an autonomous service life of a self-regenerating filter of at least 3 thousand hours. Full realization of the advantages of automated fine cleaning of engine oil by combining filtration and centrifugation, are applicable for marine diesel engines of medium and high speed with a capacity of up to 20 thousand kW. Keywords: resource-saving oil use, self-regenerating filter, centrifugal separator, diesel wear, combined oil purification, lubrication system, separator performance index, optimization of oil separation

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.

Reliability Analysis of Great Lakes Marine Diesels: State of the Art and Current Modeling

1990 ◽  
Vol 27 (04) ◽  
pp. 237-249
Author(s):  
Anastassios N. Perakis ◽  
Bahadir Inozu
Keyword(s):  
Great Lakes ◽  
Diesel Engines ◽  
Failure Modes ◽  
State Of The Art ◽  
Relevant Literature ◽  
Fault Tree Analysis ◽  
Reliability Engineering ◽  
Marine Industry ◽  
Marine Diesel ◽  
Basic Concepts

Some essential steps for the application of reliability, availability, and maintainability (RAM) techniques to marine diesel engines are presented. The paper begins with a summary of the basic concepts of reliability engineering, followed by a survey of the relevant literature on RAM applications to the marine industry and to marine diesel engines in particular. Next, the results of an informal survey of the reliability, maintenance, and replacement practices of Great Lakes operators are presented. Finally, the first two steps for a RAM application, failure modes and effects analysis and fault tree analysis, are introduced and applied for a prototype Colt-Pielstick marine diesel engine.

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