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Tytuł:
Engine fuel characterisation through ultraviolet absorption spectra
Autorzy:
Baszanowska, E.
Otremba, Z.
Powiązania:
https://bibliotekanauki.pl/articles/245537.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
fuel
spectroscopy
absorptivity
diesel engine system
Opis:
In the article, light absorption properties of the fuel oil are considered with a view to create basis for establish optical indicator of the type and quality of this kind of crude oil derivative, in this case the Diesel fuel. The organic solvent – n-hexane – was chosen as a solvent to prepare samples of dilutions of Diesel fuel in several oil concentration. Spectrophotometer Aqualog Horiba were applied to record the absorbance spectra in the ultraviolet and visual range of the light (from 240 to 600 nm) for each previously prepared samples. Obtained results allow concluding that the changes of absorbance occur primarily in the wavelength range from 240 nm to 355 nm. Moreover, the absorbance spectra are characterized by the characteristic sharp peak located at 270 nm for excitation wavelength. Spectra of absorbance were converted to spectra of absorption coefficient based on Lambert-Beer law. Due to the independence the absorption coefficient from the fuel concentration, this parameter could be used as a potential indicator to access composition and quality Diesel fuel used in the diesel engine system. Therefore, preliminary tests allow concluding that absorption coefficient for selected wavelength located at 270 nm could be a sensitive indicator for quick access to fuel quality.
Źródło:
Journal of KONES; 2017, 24, 3; 15-19
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reliability and types of diagnosis in the process of diesel engine operation
Autorzy:
Girtler, J.
Powiązania:
https://bibliotekanauki.pl/articles/2073667.pdf
Data publikacji:
2018
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
diagnosis
marine engine
diesel engine
diagnosing system
diagnosed system
diagnosis reliability
Opis:
The article presents complexity of the problem concerning development of diagnosis with defined reliability by a diagnosing system (SDG) on technical condition of marine combustion engines, especially main engines. It was shown that development of the final diagnosis, the so-called initial operation diagnosis, on the operational usability (fDG on PEx) of a main engine in particular, is not possible without prior development of reliable diagnoses such as: diagnosis on correctness of diagnostic signals, diagnosis on correctness of values of the measured diagnostic parameters of an engine (DG on pWM), diagnosis on technical condition of an engine (DG on ST) and initial diagnosis on operational usability of an engine (wDG on PEx), the so-called initial operation diagnosis. Difficulties in development of the diagnoses were emphasized herein due to the fact that the process of acquisition of information needed to develop diagnoses with certain reliability or accuracy is a two-dimensional stochastic process with components: B(t) – being considered during operation (use) of SDG (at so-called long time - quasistatic) and C(ʋ) – being considered while measuring diagnostic parameters and diagnostic inference (at so-called short time - dynamic). The need to determine reliability or accuracy rate of each diagnosis in the form of conditional probability P(S/K) was also indicated, where S – technical state of the engine and K – vector of values of diagnostic parameters reflecting state S. Diagnostic status of marine engine as a diagnosed system (SDN) was characterized in general, on the example of an engine operation process with regards to input (X), output (Y), constant (C) and interference (Z) values. Also there was explained how to understand the terms: diagnostic test, signal inference, measurement inference, structure inference and operation inference, and how inductive inference can be used to verify, for example, the hypothesis H on engine state S when vector K of values of engine diagnostic parameters is observed.
Źródło:
Journal of Polish CIMEEAC; 2018, 13, 1; 20--29
1231-3998
Pojawia się w:
Journal of Polish CIMEEAC
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The concept of an integrated laboratory control system for a dual - fuel diesel engine
Autorzy:
Śmieja, M.
Wierzbicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/246809.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
biogas
diesel engine
dual-fuel feed system
microprocessor engine control system
Opis:
The need to limit greenhouse gases emissions and to increase the share of renewable fuels in the general energy balance forces people to look for new alternative energy sources. Methane or biogas, in which methane is the main combustible component, is one of such fuels, which is believed to be a promising diesel engine fuel. It is worth emphasizing that biogas might be believed to be one of the cleanest fuels due to the fact that it can be produced from waste, which in normal conditions decomposes releasing methane into the atmosphere. Methane (biogas) combustion in diesel engines requires a dual-fuel feed system, in which the liquid fuel initiating auto-ignition will be injected into the combustion chamber. It comes as a consequence of a relatively high spontaneous combustion temperature of methane, which is not able to self-ignite in the chamber without an external source of ignition. This article presents a concept of constructing an integrated laboratory control system, which will provide optimal feed control of complex composition gaseous fuel and of the injection of an appropriate pilot dose of a liquid fuel into the combustion chamber. The solution proposed to control a dual-fuel diesel engine, which was mounted on the test bed, enables performing comprehensive diesel engine research, ensuring not only stable working conditions for the engine, but also granting an opportunity to smoothly regulate the composition of the artificial biogas which feeds the engine and to control basic parameters of the liquid fuel pilot dose.
Źródło:
Journal of KONES; 2012, 19, 3; 451-458
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of modern diesel engine fuel injectors
Diagnozowanie współczesnych wtryskiwaczy paliwa w silnikach z zapłonem samoczynnym
Autorzy:
Osipowicz, T.
Kowalek, S.
Powiązania:
https://bibliotekanauki.pl/articles/792939.pdf
Data publikacji:
2014
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
diesel engine
fuel injector
Common Rail system
injection system
combustion engine
working parameter
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2014, 14, 3
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biogas as a fuel for diesel engines
Autorzy:
Wierzbicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/246845.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
biogas
methane
diesel engine
dual-fuel supply system
Opis:
The pursuit of reduced greenhouse gas emissions, as well as the increased share of renewable fuels in the overall energy balance has led to a search for alternative energy sources. One of the fuels on which great hopes are set as fuel for engines is biomethane or biogas, whose main component is methane. Biogas can be obtained from different products by using different technologies, so that it has potential as a widelyavailable fuel, which is quite easy to produce. The percentage of methane in biogas depends on the technology for obtaining biogas and ranges from 35% to around 75%. The largest biogas sources can be animal farms, where it is obtained from animal excrement. Another source is sewage treatment plants and rubbish dumps, where substantial quantities of biogas are obtained as a result of natural processes occurring in waste dumping sites or sewage. Biogas can also be acquired from waste obtained from fruit and vegetable processing as well as waste from meat plants. This paper examines the possibility of using biogas as a fuel for diesel engines. In these engines, the combustion of biogas (methane) requires the application of a dual-fuel supply system in which liquid fuel initiating gas fuel selfignition will be injected into the combustion chamber along with methane. The paper also contains example results showing the effect of the methane dose on the course of the combustion process in diesel engines.
Źródło:
Journal of KONES; 2012, 19, 3; 477-482
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Knowledge management system for marine diesel engine diagnosis
Autorzy:
Charchalis, A.
Pawletko, R.
Powiązania:
https://bibliotekanauki.pl/articles/242163.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
knowledge management system
diagnostic expert system
marine diesel engine diagnosis
Opis:
The paper presents the conception of knowledge management system for a diagnostic expert system. Development of knowledge management system is necessary during the construction of the expert system. The most important reason is that knowledge in this system is not a static whole, but is subject to dynamic growth, is modified and updated. Advantages afforded by the creation of diagnostic systems based on knowledge, such as expert systems, compared to traditional diagnostic systems based on closed algorithms were characterized. The conception of knowledge management system established in the diagnostic work associated with the development of expert system for marine diesel engine diagnosis. The main elements of the developed management system are: dictionary editor, rule editor, knowledge assessment module and import and export module. Knowledge management system is also equipped with an electronic form that is used to obtain knowledge from experts, specialists in diesel engines operation. The article presents the tasks and the performance of individual components of the system. The knowledge management system enables integration within a single frame of both information collected from experts and automatically collected one. A doubtless advantage of expert system is the opportunity of updating and developing the content recorded in the database. Due to this feature, the effectiveness of the system may grow during engine operation and facilitate gaining new experience.
Źródło:
Journal of KONES; 2011, 18, 2; 77-83
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study on optimization simulation of SCR denitration system for marine diesel engine
Autorzy:
Du, J.
Li, R. N.
Wu, X.
Zhang, Y.
Powiązania:
https://bibliotekanauki.pl/articles/259646.pdf
Data publikacji:
2018
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
marine diesel engine
SCR system
flue gas
flow deflector
Opis:
With the rapid development of shipbuilding industry exhaust world is also very harmful one kind of environmental issues, and the ship marine diesel engine exhaust gas is mainly produced, so in recent years it has developed a diesel engine SCR system. SCR system can control emissions of nitrogen oxides in the exhaust of vessel, furthermore air pollution can be reduced. The main goal of article was using fluent software to correct SCR system selection and flue gas flow under different size best deflector arrangement is simulated. Next goal is further optimize the structure of the SCR system.
Źródło:
Polish Maritime Research; 2018, S 3; 13-21
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An algorithm for diagnosing injection systems of marine engines
Autorzy:
Bejger, Artur
Drzewieniecki, Jan
Powiązania:
https://bibliotekanauki.pl/articles/27315912.pdf
Data publikacji:
2018
Wydawca:
STE GROUP
Tematy:
diesel engine
injection system
diagnosis
acoustic emission
elastic waves
Opis:
The article presents the developed methods for diagnosing and analysing signals from injection systems of marine engines. As a source signal, the authors use elastic waves of acoustic emission. The essential fact in the case here considered is that the high frequency of signal from working elements of the injection system comes from a close source directly related to the change of the working parameters of the element (system). Characteristically for elastic waves of acoustic emission, low frequencies (e.g. those from other sources, such as machines in the engine room) are in this case attenuated. Therefore, the proper selection of the method for the analysis allows us accurately diagnose the injection system of a working engine.
Źródło:
New Trends in Production Engineering; 2018, 1, 1; 227--233
2545-2843
Pojawia się w:
New Trends in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of defective turbocharging system on the safety and reliability of large marine diesel engine
Autorzy:
Anantharaman, M.
Islam, R.
Sardar, A.
Garaniya, V.
Khan, F.
Powiązania:
https://bibliotekanauki.pl/articles/1841550.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
marine power plant
diesel engine
large marine diesel engine
turbocharging system
safety and reliability
Fault Tree Analysis
main engine
maximum continuous rating
Opis:
Today huge capacity sea-going vessels are propelled by mega high-powered marine diesel engines, referred to as Main Engine. Turbocharging system is an integral part of large marine diesel engine plant, contributing to their safety, reliability, and efficiency. Defects in the turbocharging system could result in higher fuel consumption, erratic running of the Main Engine, and in the worst scenario may result in the stoppage of the Main Engine at sea. An inefficient turbocharging system may also cause major damage to turbochargers, resulting in undesirable accidents out at sea. To avoid such undesirable accidents and ensure smooth operations of the Main Engine, it is required to address this concern. The aim of this research is to study the turbocharging system for a large Main Engine using a Kongsberg engine simulator. Various malfunction of the Turbocharging system is considered, relevant data is collected and analysed. Moreover, a Fault Tree Analysis, (FTA) is considered to identify the top undesirable event which is the failure of the Main Engine. Based on the results of this study, various steps are suggested to avoid failure of the Main Engine due to the defective turbocharging system.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 1; 189-198
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zużycie i możliwość diagnozowania wybranych elementów układu wtryskowego silników okrętowych
The wear and the possibility of condition monitoring of selected elements of injection system of marine diesel engines
Autorzy:
Bejger, A.
Powiązania:
https://bibliotekanauki.pl/articles/327678.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
emisja akustyczna
układ wtryskowy
zużycie
silnik wysokoprężny
silnik okrętowy
acoustic emission
injection system
wear
diesel engine
marine diesel engine
Opis:
W artykule przedstawiono typowe rodzaje zużycia układu wtryskowego na tle innych układów funkcjonalnych silników okrętowych. Przedstawiono możliwość zastosowania sygnałów emisji akustycznej (EA) do diagnozowania procesu wtrysku. Wykazano, że w częstotliwości około 12 - 16 kHz można wyodrębnić "czyste" sygnały odzwierciedlające pracę wtryskiwacza i układu przepłukania. Częstotliwość rzędu 8 - 16 kHz bardzo dobrze uwidacznia procesy tribologiczne zachodzące w pompie wtryskowej.
Typical wear cases of fuel injection system, in confrontation with other main functional systems of the marine diesel engine are presented in the paper. The possibility of apply the acoustic emission signals for condition monitoring of injection process and the operation of injection pump and injector are presented. There is shown, that in the frequency of 12 - 16 kHz is possibility to separate signals depended from operation and condition of injector and scavenge. The frequency of 8 - 16 kHz superbly reflect the tribological processes of fuel injection pump.
Źródło:
Diagnostyka; 2006, 4(40); 47-50
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of the degree of deterioration of trunk piston engine oil used in the engine 6AL20/24
Autorzy:
Malinowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/245610.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
engine oil
lubrication system
marine diesel engine
trunk piston engine oil
viscosity
flash point
oil contamination
Opis:
The problem of engine oils and lubrication systems of marine diesel engines is an important issue in operation of engines. When considering the problems of exploitation of machines and devices, the lubricating oils are treated as one of the part of engine design, which should perform the functions: control friction between load-bearing surfaces, limit the temperature by carrying away heat from fluid fraction and fuel combustion, reduce corrosion etc. – general protect engine parts. The knowledge of the properties lubricating oils allows for proper selection them for the engine and correct use. During operation, the oil subjects' irreversible process of oil deterioration and it cannot properly fulfil their functions. Therefore important are frequent periodic checks of oil, it means monitoring. The state of the lubricating oil can be characterized by parameters such as viscosity, total base number, acid value, lubricating ability, flash point etc. Changes on these parameters of engine oil during exploitation, cause problems in fulfilling the primary functions of the oil. The target of the paper was the analysis and estimate of properties of trunk piston engine oil – Marinol RG 1240 after various times overwork on the sailing vessel “Dar Młodzieży” on the engine Cegielski-Sulzer 6AL20/24. The results were compared with the values critical and preventive limits and proposed several corrective actions for users the engine 6AL20/24.
Źródło:
Journal of KONES; 2016, 23, 4; 319-326
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of super/turbochager system for helicopter diesel engine
Autorzy:
Prokhorenko, Andriy
Vrublevskyi, Oleksandr
Grytsyuk, Oleksandr
Kuzmenko, Anatolii
Kravchenko, Sergii
Powiązania:
https://bibliotekanauki.pl/articles/1840878.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
helicopter diesel engine
supercharging system
compressor drive
engine power
cruising altitude
śmigłowiec
silnik wysokoprężny
system doładowania
moc silnika
Opis:
The article demonstrates a rational scheme of the supercharging system in a helicopter diesel engine with a power of 100 kW, regardless of the flight altitude, and proposes a method for assessing the power losses for a diesel engine depending on the flight altitude using a mathematical model. There are three variants of an engine supercharger scheme with a single-stage turbocharger, a two-stage one with parallel or sequential compressor drive and a turbo-blower. As a result of the computational analysis according to the original method, it was shown that from the point of view of the least energy consumption two-stage scheme with a compressor and a sequential drive is the most rational. To reduce energy losses in the drive with two-stage supercharging, a concept for controlling the pressure system was proposed, which includes changing the rotational speed of the compressor drive and adjusting the throttles. Simulation of the engines running during the climb/descent of the helicopter showed that the proposed pressure scheme and control concept is effective. In order to improve the quality of regulation, the possibility to use an electric drive with the first stage compressor is being considered.
Źródło:
Diagnostyka; 2021, 22, 3; 25-34
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conceptual Design and Performance Analysis of an Exhaust Gas Waste Heat Recovery System for a 10000TEU Container Ship
Autorzy:
Ma, Zheshu
Yang, Dong
Guo, Qiang
Powiązania:
https://bibliotekanauki.pl/articles/259008.pdf
Data publikacji:
2012
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
exergy efficiency
marine diesel engine
thermal efficiency
waste heat recovery system
Opis:
According to operation characteristics of the main engine 9K98ME-C7, a combined turbines-exhaust gas waste heat recovery system is proposed to recover waste heat and increase system energy efficiency. Thermodynamic models based on the first thermodynamic law and the second thermodynamic law are formulated. The superheated steam yield, the total electric power yield, the first thermodynamic law efficiency, the exergy efficiency at different exhaust gas boiler working pressure, and the variation of the exergy efficiency under different feed water temperature and different steam turbine back pressure are analyzed. Thermodynamic results indicate that the most appropriate exhaust gas boiler pressure is 0.8MPa for studied main engine and the total thermal efficiency with combined turbines arrangement has climbed up to 53.8% from 48.5%.
Źródło:
Polish Maritime Research; 2012, 2; 31-38
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of super/turbochager system for helicopter diesel engine
Autorzy:
Prokhorenko, Andriy
Vrublevskyi, Oleksandr
Grytsyuk, Oleksandr
Kuzmenko, Anatolii
Kravchenko, Sergii
Powiązania:
https://bibliotekanauki.pl/articles/1840851.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
helicopter diesel engine
supercharging system
compressor drive
engine power
cruising altitude
śmigłowiec
silnik wysokoprężny
system doładowania
moc silnika
Opis:
The article demonstrates a rational scheme of the supercharging system in a helicopter diesel engine with a power of 100 kW, regardless of the flight altitude, and proposes a method for assessing the power losses for a diesel engine depending on the flight altitude using a mathematical model. There are three variants of an engine supercharger scheme with a single-stage turbocharger, a two-stage one with parallel or sequential compressor drive and a turbo-blower. As a result of the computational analysis according to the original method, it was shown that from the point of view of the least energy consumption two-stage scheme with a compressor and a sequential drive is the most rational. To reduce energy losses in the drive with two-stage supercharging, a concept for controlling the pressure system was proposed, which includes changing the rotational speed of the compressor drive and adjusting the throttles. Simulation of the engines running during the climb/descent of the helicopter showed that the proposed pressure scheme and control concept is effective. In order to improve the quality of regulation, the possibility to use an electric drive with the first stage compressor is being considered.
Źródło:
Diagnostyka; 2021, 22, 3; 25-34
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the costs and cost-efficiency of regeneration of modern fuel injection systems in CI engines
Autorzy:
Osipowicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/410899.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
Common Rail system
injection pump
fuel injector
high pressure system
low pressure system
diesel engine
Opis:
This paper presents the analysis of costs and cost-efficiency of the repair of modern fuel injection systems in compression-ignition engines. The requirements for modern Diesel engines are low emission of toxic substances into the atmosphere and low fuel consumption. In order to meet the rigorous standards, the Common Rail fuel injection system has been implemented. By increasing fuel injection pressure to 200 MPa and introducing multi-stage dosing, engine designers have improved the process of air-fuel mixture combustion and engine ecological and economic parameters. The price for these changes is an accelerated wear of fuel injection equipment in modern CI engines. Regular fuel filter replacement and periodical cleaning of the systems would minimise the risk of damage. Unfortunately, most users do not comply with vehicle servicing times, and come to car repair shops only when a failure occurs, but then it is too late and the repair costs are high.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2016, 5, 2; 45-50
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi-criteria fuel system optimization with an electronic control unit
Autorzy:
Wróblewski, A.
Powiązania:
https://bibliotekanauki.pl/articles/133240.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
diesel engine
fuel system
solenoid injection
optimization
silnik spalinowy
system paliwowy
wtrysk elektromagnetyczny
optymizacja
Opis:
This paper presents the results of the multi-criteria synthesis of a diesel engine fuel system using the optimization method. The optimization criteria, functional restrictions and quality criteria have been selected. The efficiency of the proposed method was demonstrated using the example of a diesel engine with the Common Rail system.
Źródło:
Combustion Engines; 2017, 56, 1; 51-55
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The correct selection of diagnostic parameters of marine diesel engine and their minimization of as a necessary action in the formation of diagnostic algorithm
Autorzy:
Witkowski, K
Powiązania:
https://bibliotekanauki.pl/articles/247369.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
ship diesel engine
diagnostic parameters
diagnostics programs
experimental data
Fault Isolation System
Opis:
This article describes the methodology of creating algorithms and diagnostic programs. Still in the construction of such algorithms and diagnostic creating programs mostly is used classical approach, the methodological basis can be reduced to the several basic tasks. One of them is the proper selection and minimization of diagnostic parameters. The article shows the importance of proper selection and minimization of diagnostic parameters on the example of the diagnostics of the injection system of a marine diesel engine. It was indicated to practical usefulness for this purpose calculated the values sensitivity of a given parameter. The stronger the diagnostic parameter responds to a change in the structural parameter, the greater its diagnostic sensitivity is and thus the early development of a given fault can be detected based on deviation analysis of this parameter from its reference value. Based on experimental data, FIS (Fault Isolation System) matrix was built after selecting and minimizing diagnostic parameters. Triple-valued evaluation of residues (–1, 0, +1) was used. The research was carried out on a real object – a four-stroke, mediumspeed marine engine from Sulzer. The impact of selected fault in the injection system on the diagnostic parameters was researched and a FIS (Fault Isolation System) matrix was built on this basis.
Źródło:
Journal of KONES; 2017, 24, 2; 287-292
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on influence of condition elements the supercharger system on the parameters of the marine diesel engine
Autorzy:
Witkowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/244429.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
ship diesel engine
turbocharger system
active experiment
air filter
compressor
air cooler
Opis:
This paper presents the issues related to the impact of the technical condition elements of the turbocharger system on the parameters of marine diesel engine. Turbocharger system, in addition to the injection system has a significant impact on the quality of the working process, the economics and reliability of the engine. Contamination of elements of the turbocharger system are the most common faults (24.7% of all damage to marine engines). Contamination the following relates to elements: air filters, compressor, air cooler, scavenging system elements and turbine. The detailed data follows that the contamination are usually in: flow channels supercharger – 56%, turbine flow channels – 22%, air cooler – 11%, air filter – 6%, scavenging system elements – 4%, other elements – 1%. The technical condition influence of air filter, compressor and air cooler was analyzed. The analysis was supported by the results of their own research, carried out in the laboratory on the marine diesel engine, four– stroke 3AL25/30 SULZER, supercharged turbocharger VTR160N Brown Boveri. The research was performed in the form of an active experiment to simulate contamination of particular elements of the turbocharging system. Technical condition change of the air filter, the air compressor and the air cooler have been investigated.
Źródło:
Journal of KONES; 2013, 20, 1; 375-380
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Systemy dwupaliwowe silników wysokoprężnych lokomotyw spalinowych - Gazodiesel
CNG/LNG dual fuel system for diesel lokomotives
Autorzy:
Dumenko, Piotr
Babeł, Marek
Powiązania:
https://bibliotekanauki.pl/articles/250955.pdf
Data publikacji:
2019
Wydawca:
Instytut Naukowo-Wydawniczy TTS
Tematy:
silnik Diesla
lokomotywa spalinowa
system dwupaliwowy
olej napędowy
gaz ziemny
diesel engine
diesel locomotive
dual fuel
diesel fuel
natural gas
Opis:
Wdrożenie w silnikach Diesla lokomotyw spalinowych systemów dwupaliwowych – olej napędowy / gaz ziemny, prowadzi do obniżenia emisji substancji szkodliwych w spalinach oraz oszczędności w związku z konkurencyjnymi cenami gazu ziemnego. Przedstawiono opis zespołów i urządzeń systemu dwupaliwowego wdrożonego na lokomotywie spalinowej serii S200 wraz z rysunkami ich zabudowy w pojeżdzie. Omówiono zagadnienia dotyczące układu sterowania, prób i badań lokomotywy, certyfikacji, infrastruktury tankowania gazu. Zaprezentowano wyniki badań stacjonarnych i ruchowych lokomotywy oraz uzyskane efekty.
With 70% of all locomotives still being powered by diesel and most of the locomotives being older than 30 years, the railway industry must urgently seek environmentally friendlier and economically more attractive alternatives to diesel fuel. Dual-fuel systems once installed on diesel locomotives, allow substituting most diesel fuel with much cheaper and cleaner gas fuels – biogas, natural gas, and syngas – without the necessity for large capital investments. This article describes a case of dual-fuel conversion of a S200/CHME3 series diesel locomotive, introducing to the system specifics, certification procedure, gas refueling infrastructure, as well as outlining the main economic and technical results. The article concludes by outlining the dual-fuel perspectives in the Polish railway industry and estimates the economic and ecological benefits its implementation can bring.
Źródło:
TTS Technika Transportu Szynowego; 2019, 11-12; 62-66
1232-3829
2543-5728
Pojawia się w:
TTS Technika Transportu Szynowego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The increase of operational safety of ships by improving diagnostic methods for marine diesel engine
Autorzy:
Witkowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/117520.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
diagnostic methods
marine diesel engine
main engine
ship propulsion
operational safety
injection system
damage
fuel oil
Opis:
This article shows the importance of the diagnostic improvement methods of marine engines to boost the economy and safety of operation of marine cargo ships. The need to implement effective diagnostic methods is justified by presenting statistical data of marine diesel engines failure and the cost of their operation. Based on the own research has been proven, for the chosen example, that indicator diagrams and analysis of indicated parameters have limited utility in the diagnosis of damages of marine engine, although this is a method commonly used in operational practice. To achieve greater diagnostic effectiveness, when, based on indicator diagrams, are calculated and then the characteristics of heat release is analyzed - net of heat release characteristics and the intensity of the heat release, it was demonstrated. This procedure is particularly effective in the diagnosis of damage of injection system components marine diesel engine.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2017, 11, 2; 317-321
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ zastosowania detergentowych dodatków paliwowych na pracę elektromagnetycznych wtryskiwaczy paliwa
The influence of detergent additives to diesel engines fuel on the operation of diesel engine injection system
Autorzy:
Szczypiński-Sala, W.
Powiązania:
https://bibliotekanauki.pl/articles/313640.pdf
Data publikacji:
2016
Wydawca:
Instytut Naukowo-Wydawniczy "SPATIUM"
Tematy:
olej napędowy
silnik spalinowy
wtryskiwacz paliwa
diesel
internal combustion engine
injection system
Opis:
W artykule opisano wyniki badań wykonanych dla oceny wpływu dodatków paliwowych do oleju napędowego na działanie elektromagnetycznych wtryskiwaczach paliwa. Dodatki tego typu stosowane są w celu ograniczenia powstawania osadów oraz usuwania już powstałych z precyzyjnie pasowanych elementów aparatury wtryskowej. Pomiary zostały wykonane na stanowisku badawczym z zasobnikowym układem wtryskowym. Przeprowadzono analizę dawkowania paliwa w różnych warunkach pracy układu, to znaczy wartości ciśnienia zasilania i czasu trwania wtrysku. Ocenie poddano również zmianę własności fizycznych paliwa po dodaniu modyfikatora. Wprowadzane są coraz bardziej rygorystyczne normy związane z emisja zanieczyszczeń przez silniki spalinowe, w tym związane z emisją cząstek stałych. Najszersze możliwości zmniejszania emisji szkodliwych składników spalin i tym samym spełnienia nakładanych norm dają zasobnikowe systemy wtrysku. Możliwości te wynikają z dużego zakresu możliwości sterowania czasem wtrysku i momentem początku wtrysku. Duże znaczenie ma również wartość ciśnienia rozpylania paliwa uzyskiwana w tego typu układach. Uzyskanie precyzyjnego dawkowania paliwa wpływającego na przebieg jego spalania w dużej mierze uzależnione jest od szybkości i poprawności działania wtryskiwaczy. Od ich hydraulicznej charakterystyki uzależniona jest wrażliwość na zmiany właściwości paliwa wynikające z wprowadzenia modyfikatora.
The article describes the results of the research carried out in order to evaluate the influence of detergent additives to diesel engines fuel on the operation of diesel engines injection systems. This type of additives is applied in order to restrict the formation of deposits and to remove those already formed from the elements of fuel injectors. The measurements were carried out on the test stand for solenoid controlled high pressure common-rail fuel injection systems. The analysis of fuel dosing was conducted in various conditions of the work of the system, ie. the value of fuel outflow pressure from the injection nozzle and injection duration. Change of fuel physical properties after adding modifier was also evaluated. There are introduced more and more rigorous norms in relation to the emission of fumes by diesel engines, including those associated with the emission of particles. Solenoid controlled common-rail fuel injection systems give the broadest possibilities of reducing the emission of detrimental fume concentrations and all the same fulfilling the imposed norms. The possibilities result from a wide range of the capability of steering the time of injection and the moment it begins. Value of pressure of spraying fuel, obtained in this type of systems is also very significant. The obtainment of precise fuel dosing, having the influence on the course of burning, depends to a large extent on the velocity and correctness of the operation of the injection systems. The proneness to the changes of fuel properties resulting from the introduction of a modifier depends on their hydraulic characteristics. In other side due to clearances 1 to 2 microns even minimal internal diesel injector deposits on the injector pintal or other components can lead to sticking and even seizure.
Źródło:
Autobusy : technika, eksploatacja, systemy transportowe; 2016, 17, 6; 1166-1170
1509-5878
2450-7725
Pojawia się w:
Autobusy : technika, eksploatacja, systemy transportowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Utilization of waste heat energy of the exhaust gases in a diesel engine using the ORC system
Utylizacja odpadowej energii cieplnej spalin w silniku ZS za pomocą układu ORC
Autorzy:
Buczek, Łukasz
Samoilenko, Dmytro
Powiązania:
https://bibliotekanauki.pl/articles/2175382.pdf
Data publikacji:
2022
Wydawca:
Instytut Transportu Samochodowego
Tematy:
diesel engine
ORC system
test stand
silnik ZS
układ ORC
stanowisko badawcze
Opis:
Waste heat recovery systems using the organic Rankine cycle (ORC systems) can be a way to increase the overall efficiency of internal combustion engines (ICE) and way to reduce the emission to the environment. The main two advantages of ORC systems are: the use of thermal energy, which is dissipated into the environment in the form of heat - fuel energy, which is not used by the ICE and the lack of interference in the operation of the ICE. Additionally, high efficiency, low construction costs and high compatibility and flexibility of ORC systems mean that their installation on ICE exhaust systems is economically justified and simple. The article below proves the legitimacy of considering the above-mentioned solution, proposes an ORC system concept for a laboratory ICE, presents a diagram of the procedure during the design/construction of the system and presents the initial energy balance of the solution.
Układy utylizacji energii cieplnej wykorzystujące organiczny obieg Rankine’a (układu ORC) mogą być sposobem na zwiększanie ogólnej sprawności silników spalinowych (SS), a więc jednocześnie na zmniejszanie emisji związków szkodliwych do środowiska. Głównymi dwiema zaletami układów ORC są: wykorzystywanie energii cieplnej, która jest rozpraszana do środowiska w postaci ciepła, a więc energii paliwa, która nie jest wykorzystywana przez SS oraz brak ingerencji w pracę SS. Dodatkowo, wysoka sprawność, niskie koszty budowy oraz wysoka kompatybilność i elastyczność układów ORC powodują, iż ich zabudowa na układach wylotowych SS jest ekonomicznie uzasadniona i prosta. W poniższym artykule dowiedziono zasadności podjęcia rozważań dot. w/w rozwiązania, zaproponowano koncepcję układu ORC dla laboratoryjnego SS, przedstawiono schemat postępowania podczas projektowania/budowy układu oraz przedstawiono wstępny bilans energetyczny rozwiązania.
Źródło:
Transport Samochodowy; 2022, 2; 3--9
1731-2795
Pojawia się w:
Transport Samochodowy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The use of Newton’s method for interpolation in the bench testing of compression-ignition engine unit injector systems
Wykorzystanie interpolacyjnej metody Newtona w badaniach stanowiskowych pompowtryskiwaczy silnika o zapłonie samoczynnym
Autorzy:
Stoeck, T.
Osipowicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/133965.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
diesel engine
polynomial interpolation
unit injector system
silnik wysokoprężny
interpolacja wielomianowa
pompowtryskiwacz
Opis:
The paper presents the methodology for calculations based on the Newton’s method which was used to determine the characteristics of test unit injector systems. It allowed simplification of the research process by preserving a minimum number of measuring points and estimation of other data analytically. Results were compared with the real experimental results obtaining satisfactory accuracy of approximations. The proposed methodology was adapted to a standard spreadsheet so that changes in pre-set parameters and required computations could be made on a regular basis, which in addition shortened the time of their performance.
W artykule przedstawiono metodykę obliczeń opartą na metodzie Newtona, którą zastosowano do wyznaczenia charakterystyk probierczych pompowtryskiwaczy. Umożliwiła ona uproszczenie procesu badawczego przez zachowanie minimalnej liczby punktów pomiarowych i oszacowanie pozostałych danych w sposób analityczny. Rezultaty odniesiono do rzeczywistych wyników doświadczalnych, uzyskując zadowalającą dokładność przybliżeń. Proponowaną metodykę zaadaptowano do standardowego arkusza kalkulacyjnego, dzięki czemu zmianę parametrów zadanych i wymagane obliczenia prowadzono na bieżąco, co dodatkowo skróciło czas ich realizacji.
Źródło:
Combustion Engines; 2014, 53, 4; 32-39
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stanowisko do badań diagnostycznych układu łożyskowania tłokowego silnika spalinowego
A Test Stand for Diagnostic Examination of a Diesel Engine Bearing System
Autorzy:
Korczewski, Z.
Wontka, L.
Powiązania:
https://bibliotekanauki.pl/articles/359749.pdf
Data publikacji:
2004
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
tłokowy silnik spalinowy
łożyskowanie silnika
diagnostyka
moc strat mechanicznych
EXPLO-SHIP 2004
diesel engine
bearing system
diesel engine diagnosis
power of mechanical losses
Opis:
Przedstawiono możliwości wykorzystania stanowiska laboratoryjnego silnika S312C do badań diagnostycznych układu łożyskowania. Wnioskowanie o stanie technicznym jest oparte na pomiarach ciśnień wewnątrzcylindrowych w zakresie biegu jałowego silnika. Daje to w rezultacie możliwość wyznaczenia mocy strat mechanicznych jako parametru charakteryzującego dysypację energii wnoszonej z powietrza i paliwa zasilającego.
A laboratory test stand of S312C diesel engine can be used for diagnosing the engine bearing system. Conclusions on the technical state are drawn from indicated pressure measurements at the engine running idle. They are subsequently converted into the power of mechanical losses as a parameter characterising dissipation of energy carried into the engine from feeding air and fuel.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2004, 1 (73); 369-380
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie zbiorów przybliżonych do diagnostyki aparatury paliwowej silników o zapłonie samoczynnym
Application of rough sets in diagnostics of diesel fuel injection systems
Autorzy:
Klimkiewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/290597.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
aparatura paliwowa
diagnostyka
zbiory przybliżone
silnik o zapłonie samoczynnym
diagnostics
diesel engine
diesel fuel injection system
rough sets
Opis:
Wykorzystano właściwości zbiorów przybliżonych do wykrywania usterek układów paliwowych silników o zapłonie samoczynnym. Zbudowano model, w którym zmiennymi wejściowymi są symptomy zaobserwowane przez użytkownika wskazujące na niewłaściwą pracę silnika oraz kontrolne pomiary wykonane przez mechanika. Zmienną wyjściową jest wykryta usterka. Wygenerowano reguły pewne oraz reguły przybliżone pozwalające na wykonanie diagnozy. Przeprowadzono ocenę jakości zbudowanego modelu regułowego oraz jego weryfikację za pomocą walidacji krzyżowej.
The rough sets were used to fault diagnostics of fuel systems diesel engine. A model was developed in which input variables are the symptoms observed by the users of engines and also the checks and measurements executed by a technician. An output variable is the fault which has to be repaired. On the base of rough sets certain and approximate rules were inducted to made diagnosis possible. Quality of developed rule model was estimated and verified by cross classification.
Źródło:
Inżynieria Rolnicza; 2005, R. 9, nr 14, 14; 177-183
1429-7264
Pojawia się w:
Inżynieria Rolnicza
Dostawca treści:
Biblioteka Nauki
Artykuł
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