Wyniki wyszukiwania - BazTech

1

Fault diagnosis of me marine diesel engine fuel injector with novel IRCMDE method

Shi Qingguo, Hu Yihuai, Yan Guohua

Polish Maritime Research

|

2023

|

nr 3

96--110

EN

As an important component of the fuel injection system, the fuel injector is crucial for ensuring the power, economy, and emissions for a whole ME (machine electronically-controlled) marine diesel engine. However, injectors are most prone to failures such as reduced pressure at the opening valve, clogged spray holes and worn needle valves, because of the harsh working conditions. The failure characteristics are non-stationary and non-linear. Therefore, to efficiently extract fault features, an improved refined composite multi-scale dispersion entropy (IRCMDE) is proposed, which uses the energy distribution of sampling points as weights for coarse-grained calculation, then fast correlation-based filter (FCBF) and support vector machine (SVM) are used for feature selection and fault classification, respectively. The experimental results from a MAN B&W 6S35ME-B9 marine diesel engine show that the proposed algorithm can achieve 92.12% fault accuracy for injector faults, which is higher than multiscale dispersion entropy (MDE), refined composite multiscale dispersion entropy (RCMDE) and multiscale permutation entropy (MPE). Moreover, the experiment has also proved that, due to the double-walled structure of the high-pressure fuel pipe, the fuel injection pressure signal is more accurate than the vibration signal in reflecting the injector operating conditions.

2

The use of neural network algorithms for modeling injection doses of modern fuel injectors

Abramek Karol Franciszek, Osipowicz Tomasz, Mozga Łukasz

Combustion Engines

|

2021

|

R. 60, nr 2

10--14

EN

The article presents the possibilities of using artificial intelligence methods to model the injection doses of a modern Common Rail (CR) fuel injector. The presented neural network solution belongs to the experimental models known as black boxes in mechatronics. The backpropagation algorithm and its Levenberg-Marquardt expansion were used for the simulation. The analysis showed that there is a good match between the measurements and the computational model. The proposed solution can be used in the processes of diagnosing not only elements of the injection equipment, but also the internal combustion engine.

3

Use of Triz SU-Field Models in the Process of Improving the Injector of an Internal Combustion Engine

Chybowski L.

Multidisciplinary Aspects of Production Engineering

|

2018

|

Vol. 1, Iss. 1

257--268

EN

The article describes a method for analyzing and solving problem situations with the use of Su-Field models and 76 inventive standards. These tools are part of the “Theory of Inventive Problem Solving”. The author has presented the basic concepts of Su-Field models, including in the compilation of the most commonly used substances their fields and types of interactions in Su-Field models. The inventive standards have also been presented and grouped. Attempts have been made to solve two undesirable situations that occur during the operation of a complex technical system, which is the fuel injector of the self-ignition engine. Problem situations related to insufficient impact were modelled - too low tightening of the injector spring, and negative (harmful) interaction - erosive wear of the holes in the atomizer nozzle. Using the inventive standards of Class-1 and Class-2, general solutions to these problems have been found. After the transformation, exemplary detailed ways of solving the aforementioned problems have been presented in order to improve the design of the injector for these models. A summary and comments on the applicability of the presented methodology, regarding such complex technical systems, have also been presented.

4

Technical diagnostics fuel injection pump condition used of fuel with hydrogen containing admixtures

Balitskii A, Abramek K. F., Osipowicz T.

Badania Nieniszczące i Diagnostyka

|

2018

|

nr 2

3--5

EN

Article describes high pressure fuel pump CP1H Common Rail system which worked on fuel with hydrogen containing admixtures. It was presented how can high pressure injection pump diagnose. Research object was dismantled on spare parts and checked under microscope. Paper discusses construction and mechanism of action researched fuel pump. During the researches has been presented crucial elements of pump. It has been described the areas where are produced metal fillings in pressure pump and discussed the methods of prevents them.

PL

W artykule przedstawiono pompę wtryskową układu Common Rail typu CP1H, która pracowała na zanieczyszczonym dodatkami zawierającymi wodór paliwie. Pokazano, w jaki sposób można zdiagnozować pompę wtryskową, rozmontowaną na części składowe oraz poddano badaniom mikroskopowym. W referacie została omówiona budowa badanej pompy oraz zasada działania. Podczas badań zostały przedstawione najbardziej newralgiczne elementy pompy. Przedstawiono również miejsca pompy, w których tworzą się niebezpieczne metaliczne opiłki oraz omówiono metody im zapobiegania.

5

Analysis of possibilities to improve environmental operating parameters of modern compression – ignition engines

Osipowicz Tomasz, Abramek Karol Franciszek, Barta Dalibor, Droździel Paweł, Lisowski Maciej

Advances in Science and Technology. Research Journal

|

2018

|

Vol. 12, no 2

206--213

EN

The aim of this study was to analyse the possibilities of improving the ecological parameters of compression – ignition CI engines. During the analysis of exhaust gas, attention was mainly paid to the emission of nitrogen oxides and carbon black soot. A method was proposed to reduce the above chemical elements in CI – engine exhaust fumes by using the annular channels on the non-working part of the fuel injector needle and applying a platinum catalyst on them. The task of these annular channels is to mix and agitate the fuel before injection to the combustion chamber and to enlarge the contact surface area of catalyst. The task of catalytic coating is to initiate the reaction of dehydrogenation of paraffinic hydrocarbons to olefinic ones with a free hydrogen molecule. Hydrogen, owing to its properties, can shorten the period of delay of spontaneous ignition of combustible mixture in the engine combustion chamber, which affects the entire combustion process and improves the ecological parameters of a CI engine.

6

Possibilities of research electromagnetic fuel injectors

Osipowicz T., Prajwowski K.

Journal of KONES

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2017

|

Vol. 24, No. 2

167--175

EN

Article discusses issues concerning researching electromagnetic fuel injectors. These fuel system is using in automobiles all the time. Bosch Company declined piezoelectric fuel injectors and reverted to electromagnetic. There are known Denso, Delphi and Bosch electromagnetic fuel injectors. Article describes how to diagnose and repair it. Denso and Bosch fuel injectors have almost the same construction. These objects have very similar repair technology. Despite Denso fuel injectors has not manufacturer official repair technology it is possibility to regenerate it because there are tools and many spare parts available on the market. Article discusses construction and operation presented fuel injectors. There has been shown diagnostic parameters and how to analysis it. Researches have been made in laboratory handle; to research and repair Diesel injection systems. Article describes construction, operating testing and repairing of electromagnetic fuel injectors. The aim of the article is to present the possibilities of researching and repairing electromagnetic fuel injectors. The fuel unit injector testing and repair process is carried out. The tests were conducted in a specialist laboratory where fuel injectors, fuel unit injectors and fuel injection pumps are being regenerated. The setting of the opening pressure of fuel unit injector is a very important stage because it affects the volume of injection doses. The opening pressure of fuel unit injector should amount to 28 MPa. F

7

Reduction of the Common Rail fuel injectors repair costs

Osipowicz T.

ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes

|

2017

|

Vol. 6, No 1

63--70

EN

This paper presents the analysis of costs reduction of Common Rail fuel injectors repairs. The task of fuel injectors is to spray and distribute fuel very precisely in combustion chamber. It has to be reliable to accomplish this task. The requirements for CI engines are low emission of toxic substances in fumes and low fuel consumption. In order to meet the rigorous standards, the Common Rail fuel injection system has been implemented, which increased fuel injection pressure and introduced multi – stage dosage. The cost of this ‘s repair is very high due to sophisticated spare parts and technology. This article describes how to lower the cost of modern fuel injectors repair.

8

The influence of corrosion phenomena on operational parameters of modern fuel injectors CI-engines

Osipowicz T., Lisowski M.

Combustion Engines

|

2017

|

R. 56, nr 4

17--23

EN

The article describes the influence of corrosion phenomena on operational parameters of common fuel injectors. Paper has been presented and describes Common Rail fuel injectors, their structure and work principles. Main fuel injectors parameters, like injection dosage, back leakage and injection delay are discussed. It has been presented the elements of injectors which have influence on dosages magnitude and how the corrosion phenomena influences on its. The elements of injectors, which have an influence on dosages magnitudes, are presented and the effect of their corrosion is discussed.

9

Modeling a fuel injector for a two-stroke diesel engine

Sochaczewski R., Czyż Z., Siadkowska K.

Combustion Engines

|

2017

|

R. 56, nr 3

147--153

EN

This paper discusses the modeling of a fuel injector to be applied in a two-stroke diesel engine. A one-dimensional model of a diesel injector was modeled in the AVL Hydsim. The research assumption is that the combustion chamber will be supplied with one or two spray injectors with a defined number of nozzle holes. The diameter of the nozzle holes was calculated for the defined options to provide a correct fuel amount for idling and the maximum load. There was examined the fuel mass per injection and efficient flow area. The studies enabled us to optimize the injector nozzle, given the option of fuel injection into the combustion chamber to be followed.

10

Diagnosing methods common rail fuel injectors

Osipowicz T., Abramek K. F.

Combustion Engines

|

2017

|

R. 56, nr 1

56--61

EN

Article describes diagnose and research methods Common Rail system fuel injectors. Professional diagnose modern fuel injectors is very difficult procedure. Basic theirs work parameter influencing on correctly work parameters are magnitude injection and return dosages by definite pressures prevailing in system and injection times. Sometimes dosages during diagnose by coordinate task and actual fuel injector are correct but engine work is not proper. So that during diagnose should extend tests procedure in range varie work conditions. Fuel injectors work characteristics are one of method researching in whole range work. During researches has been used Continental fuel injector.

11

Wpływ naniesienia powłoki DLC na trwałość wybranego elementu układu wtryskowego typu Common Rail w silniku o zapłonie samoczynnym

Jasiok M.

Autobusy : technika, eksploatacja, systemy transportowe

|

2017

|

R. 18, nr 12

923--927, CD

PL

W artykule omówiony został problem trwałości pary precyzyjnej wtryskiwacza paliwa w układzie Common Rail. Przeprowadzono badania zużycia pary precyzyjnej iglicy i rozpylacza stanowiących integralną część wtryskiwacza elektromagnetycznego w układzie zasilania typu Common Rail silnika o zapłonie samoczynnym. Do oceny właściwości tribologicznych wykorzystano badania na tribotesterze T-05 w skojarzeniu rolka-klocek. Wyznaczono najważniejsze parametry eksploatacyjne, niezbędne do odzwierciedlenia rzeczywistych warunków eksploatacji. Na podstawie ww. wytycznych przeprowadzono badania wstępne umożliwiające określenie głównych mechanizmów zużywania i momentu zatarcia co pozwoliło na prognozowanie trwałości badanego węzła tarcia. Do badań wykorzystano rzeczywiste materiały, które są przeznaczane do współpracy w danym skojarzeniu, tj. szybkotnąca stal narzędziowa (HS 6-5-2) oraz stal narzędziowa 100Cr6 po obróbce cieplnej. W celu walidacji uzyskanych wyników badań, powinno się zestawić otrzymane rezultaty badań na stanowisku tribologicznym do wyników uzyskanych na obiekcie rzeczywistym.

EN

Paper presents the results of the study of the precision steam wear of the needle and the nozzle forming an integral part of the electromagnetic injector in the common rail feed system of the compression ignition engine. T-05 tribotester tests were used to evaluate the tribological properties of the roller-block system. The most important operational parameters have been identified, necessary to reflect the actual operating conditions. Based on the above. The guideline was a preliminary study to determine the main wear mechanisms and the moment of seizure, which allowed us to predict the durability of the examined friction node. The actual materials used in contact, ie high-speed tool steel (HS 6-5-2) and tool steel 100Cr6, were used for the study. In order to validate the obtained results, the results obtained at the tribological site should compared with the results obtained on the actual site.

12

Możliwości regulacyjne wtryskiwaczy paliwa firmy Denso

Osipowicz T.

Autobusy : technika, eksploatacja, systemy transportowe

|

2017

|

R. 18, nr 7-8

199--202

PL

Celem artykułu było przedstawienie możliwości regulacyjnych elektromagnetycznych wtryskiwaczy paliwa firmy Denso. Firma Denso jest producentem elektromagnetycznych i piezoelektrycznych wtryskiwaczy paliwa.W artykule opisano możliwości diagnozowania współczesnych wtryskiwaczy paliwa. Scharakteryzowano zdolności regulacyjne oraz ewentualnej naprawy elektromagnetycznych wtryskiwaczy Denso. Opisano budowę, działanie oraz parametry diagnostyczne badanych wtryskiwaczy paliwa.

EN

The aim of the article was presenting the possibilities of adjustment electromagnetic Denso fuel injectors. Denso is producer of electromagnetic and piezoelectric fuel injectors. Article describes diagnosing possibilities of common fuel injectors. There have been put forward adjustments and repair abilities of electromagnetic Denso fuel injectors. There have been described construction, operation and diagnostic parameters researched fuel injectors.

13

Analysis of the costs and cost-efficiency of regeneration of modern fuel injection systems in CI engines

Osipowicz T.

ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes

|

2016

|

Vol. 5, No 2

45--50

EN

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.

14

Przyczyny tworzenia się osadów we wtryskiwaczach Common Rail

Stoeck T., Osipowicz T.

Autobusy : technika, eksploatacja, systemy transportowe

|

2016

|

R. 17, nr 8

139--141

PL

W artykule przedstawiono przyczyny oraz skutki tworzenia się zewnętrznych i wewnętrznych osadów w wysokociśnieniowych układach wtrysku paliwa Common Rail (CR) silników o zapłonie samoczynnym. Analizie poddano wybrane części składowe wtryskiwaczy, wskazując na elementy najczęściej ulegające procesom niszczącym.

EN

The paper presents on the state of affairs so far in the scope of external and internal diesel injection deposits issue affecting modern diesel high pressure Common Rail (CR) systems. The analysis included selected components, pointing to the elements and assemblies being most frequently subject to destructive processes.

15

Analiza uszkodzeń wtryskiwaczy układów zasilania common rail

Kurczyński D., Adrian A.

Autobusy : technika, eksploatacja, systemy transportowe

|

2016

|

R. 17, nr 12

1097--1105

PL

Układ zasilania tłokowego silnika spalinowego w ostatnich kilkunastu latach ulegał intensywnemu rozwojowi. Rozwój ten był wynikiem rygorystycznych wymagań stawianych silnikom, związanych z dążeniem do ograniczenia ich szkodliwego oddziaływania na środowisko. W celu zmniejszenia zużycia paliwa oraz emisji szkodliwych składników spalin wprowadzono nowe rozwiązania konstrukcyjne układów zasilania. Prawidłowa i długotrwała ich praca, a tym samym spełnienie wymagań stawianych silnikom w istotny sposób zależy od prawidłowej ich eksploatacji oraz jakości stosowanego paliwa. W artykule krótko scharakteryzowano układy zasilania Common Rail powszechnie stosowane we współczesnych silnikach o zapłonie samoczynnym. Przedstawiono w postaci dokumentacji fotograficznej uszkodzenia elementów wtryskiwaczy stosowanych w układach zasilania Common Rail. Określono przyczyny tych uszkodzeń. Największy wpływ na długotrwałą i bezawaryjną eksploatację wtryskiwaczy ma jakość paliwa stosowanego do zasilania silników o zapłonie samoczynnym wyposażonych w układ zasilania Common Rail.

EN

During the recent several years, the fuel feeding systems of piston combustion engines have been undergoing an intensive development. It is directly linked to strict requirements to be met by engines, aimed at reducing their negative impact upon the natural environment. New constructional solutions in fuel feeding systems have been introduced in order to decrease the fuel consumption and emission of harmful components of exhaust gases. Failure-free and long operation of supply systems, and thereby meeting the requirements for engines, is strictly linked to their correct use and high quality of fuel. The paper contains a short characteristics of the Common Rail fuel feeding system, broadly used in modern Diesel engines. It also presents photographic documentation of damaged elements of the injectors, used in the Common Rail systems and it identifies the causes of damages. The major factor contributing to a faultless and long operation of Diesel engines with Common Rail injectors is the quality of fuel.

16

Influence of fuel pollutants on operating parameters of contemporary fuel injector

Osipowicz T., Stoeck T., Gołębiewski W.

Journal of KONES

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2015

|

Vol. 22, No. 3

169--174

EN

Article describes the operation issues of contemporary injection systems of Diesel engines. Common-rail system has been used since 1997, and since then there has been a significant evolution in its construction. In this aspect, there are changes in generations of high-pressure injection pumps and fuel injectors as well as methods of steering them, but exploitation problems are the same. The most prone to malfunction elements of the system are the fuel injectors. Their task is to distribute and to spray of the fuel in the combustion chamber of engine. Common Rail fuel injectors generate few injection dosages in the one work cycle. The rate of injection is depended on the design of the steering valve. One very important parameter of fuel injector is fuel injection delay time. If the time from control start of fuel injector to begin injection is shorter then it causes generation of greater number of injection dosages. Pollutants in fuel in the form of various amorphous solids of the size an even few microns cause the decrease of operating parameters of injector, which adversely affects the operation of the engine. Article shows contemporary fuel injectors, the methods of their examination, the types of fuel pollutants and their impact on fuel injector work.

17

Testing of modern common rail fuel injectors

Osipowicz T., Abramek K. F., Stoeck T.

Combustion Engines

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2015

|

R. 54, nr 3

688--694

EN

This paper presents an analysis of the operation of modern Bosch Common Rail solenoid-controlled fuel injector of generation 2.5. This generation is the latest type of Bosch solenoid-controlled fuel injectors. The paper describes the operation of tested fuel injector, methods of its testing, verification of components and possible defects which may occur during operation. During the tests, the volume of fuel injection doses and return fuel doses was measured and the fuel injector was disassembled into individual components which were then tested using a specialist microscope.

PL

Artykuł przedstawia analizę pracy współczesnego elektromagnetycznego wtryskiwacza Common Rail Bosch generacji 2,5. Generacja ta jest najnowszym typem wtryskiwaczy elektromagnetycznych firmy Bosch. Referat opisuje działanie badanego wtryskiwacza, sposoby jego testowania, weryfikację podzespołów oraz ewentualne usterki jakie mogą występować podczas eksploatacji. Podczas badań zmierzono wielkości dawek wtrysku oraz powrotnych, parametr opóźnienia wtrysku paliwa oraz dokonano rozłożenia wtryskiwacza na elementy składowe, które zostały przebadane przy użyciu specjalistycznego mikroskopu.

18

Badanie wybranych układów zasilania paliwem silników o zapłonie samoczynnym

Osipowicz T., Lisowski M.

Autobusy : technika, eksploatacja, systemy transportowe

|

2015

|

R. 16, nr 6

176-177

PL

Artykuł przedstawia możliwości badania wybranych układów zasilania silników o zapłonie samoczynnym. Obiektem badawczym był wtryskiwacz paliwa o nr 0445 110 036. Wtryskiwacz został zbadany na urządzeniu badawczym do diagnostyki komputerowej silnika, która wykazała niewłaściwa kompensacje dawek wtrysku.

EN

Article presents possibilities of research chosen injection systems Diesel engines. Research object was Diesel injector with number 0445110036. Injector has been researched by using tester, because of faulty injection dosage compensation computer diagnostic.

19

Badanie i analiza pracy nienaprawialnych wtryskiwaczy paliwa

Osipowicz T.

Autobusy : technika, eksploatacja, systemy transportowe

|

2015

|

R. 16, nr 6

172-175

PL

Artykuł przedstawia możliwości badania piezoelektrycznych wtryskiwaczy firmy Continental Siemens. Piezoelektryczne wtryskiwacze ze względu na brak technologii oraz oryginalnych części zamiennych należą do grupy nienaprawialnych. Referat opisuje w jaki sposób diagnozuje się tego typu wtryskiwacze paliwa oraz przedstawia możliwości ich naprawy. Obiektem badawczym jest piezoelektryczny wtryskiwacz firmy Continental Siemens o numerze katalogowym 9674973080.

EN

Article presents possibilities of research piezoelectric Diesel injectors Continental Siemens company. Piezoelectric Diesel injectors belong to not repair group because of lack technology and original spare parts. Paper describes how to diagnose these injectors and shows the possibilities of their repair. Research object is piezoelectric Diesel injector Continental – Siemens with catalogue number 9674973080.

20

Wpływ dodatku oleju rzepakowego do paliwa na charakterystykę pracy wtryskiwaczy elektromagnetycznych

Szczypiński-Sala W.

Logistyka

|

2014

|

nr 5

1521-1526

PL

W artykule zaprezentowano wyniki pomiarów przeprowadzonych dla oceny wpływu dodatku oleju rzepakowego do mineralnego oleju napędowego na pracę elektromagnetycznych wtryskiwaczy paliwa. Zgodnie z zaleceniami zawartymi w przepisach wprowadzane są bio-dodatki do paliw silnikowych. Rozwiązanie takie ma na celu ograniczenie wpływu wykorzystania paliw kopalnych na środowisko naturalne. Oleje roślinne znacznie szybciej ulęgają biodegradacji, co zmniejsza również ryzyko skażenia gleby i wód gruntowych w przypadku niekontrolowanych wycieków awaryjnych. Zastosowanie bio dodatków ma jednak wpływ na pracę układu zasilania i przebieg spalania paliwa w silniku. W artykule przestawiono porównanie własności fizycznych paliwa będącego mieszanką oleju rzepakowego i mineralnego oleju napędowego, w odniesieniu do oleju probierczego stosowanego przy sprawdzaniu i regulacji aparatury paliwowej silnika. Opisano wyniki pomiarów dawkowania paliwa przy zachowaniu parametrów wysterowania wtrysku paliwa i zastosowaniu cieczy o różnych własnościach. Omówiono wyniki prób stanowiskowych wykonanych dla zakresu ciśnień i czasów otwarcia wtryskiwaczy odpowiadających warunkom pracy silnika.

EN

The paper presents the results of experiments carried out to investigate influence of rape oil addition to mineral diesel fuel on the work of electromagnetic fuel injectors. In accordance with requirements of EU regulations the bio fuel additives are introduced to the fuels used in combustion engines. Use of bio components is one solution to reduction influence of engine fuels on environment. Vegetable oils are biodegradable and its use reduce risk of contaminate soil and subsurface water in cause of uncontrolled leak. However, the addition of bio component to the diesel fuel influences the combustion process as well as the exploitation of a diesel engine. The physical parameters of mixture rape oil and diesel fuel have been compared with calibration fluid used in test stands. Comparative analysis of the changes in the injection fuel dose as a result of different fuel properties was carried out. The analysis of the test results has been performed in relation to the pressure of fuel outflow from the injector nozzle, and injection duration.