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Przegląd modeli procesów spalania w cylindrze silnika tłokowego

Cuper-Przybylska D.

Autobusy : technika, eksploatacja, systemy transportowe

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2018

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R. 19, nr 4

48--52

PL

W artykule znajduje się analiza modeli wykorzystywanych do obliczania parametrów procesu spalania w silnikach tłokowych. Jedną ze stosowanych technik jest modelowanie oparte na opisie matematycznym zjawisk fizycznych. Poziom złożoności takiego opisu uzależniony jest jednak od celu modelu, efektywności obliczeń i możliwości uzyskania wiarygodnych danych pomiarowych. W pracy przedstawiono różne metody modelowania zjawisk zachodzących w cylindrze silnika tłokowego o zapłonie samoczynnym. Przedstawiono założenia i efekty modelowania z zastosowaniem modeli od 0-wymiarowych i jednostrefowych po złożone modele 3-wymiarowe, opisujące zjawiska turbulentnych ruchów mas z zastosowaniem komputerowej mechaniki płynów.

EN

The article presents an analysis of models used to calculate combustion process parameters in piston engines. One of the applied techniques is modeling based on the mathematical description of physical phenomena. The level of complexity of such a description depends, however, on the purpose of the model, the efficiency of calculations and the possibility of obtaining reliable measurement data. The paper presents various methods of modeling phenomena occurring in the cylinder of a Diesel engine. Presented are assumptions and effects of modeling using models from 0-dimensional and single-zone to complex 3-dimensional models, describing the phenomena of turbulent mass movements using computer fluid mechanics.

2

Research injection pressure with the Kistler 4067E pressure transmitter on Sulzer engine 3AL25/30

Cuper-Przybylska D., Wysocki J.

Journal of KONES

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2017

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Vol. 24, No. 3

29--36

EN

Commonly used in the shipbuilding are combustion piston diesel engines that serve as power generators and main propulsion engines. More stringent of environmental regulations, however, require a more detailed understanding of the processes involved in piston engine combustion to reduce emissions to the environment. Also, the main reason for interest in research in the injection system is also the desire to obtain the highest piston engine power at the lowest fuel consumption. The article presents a study of changes in fuel injection pressure, which allows the operator to analyse the thermodynamic processes taking place in the cylinder. The injection pressure measurement allows you to make proper operating, maintenance and even repair decisions on the object under test. The purpose of this article is to investigate the operation of the injection pressure sensor and to compare the pressure curves measured by the Kistler 4067E sensor in various piston engine-operating states and the simulated failures of the SULZER 3AL25/30 diesel engine. The study was conducted on the SULZER 3AL25/30 engine at the Marine Engine Laboratory at the Gdynia Maritime University. Tests carried out with a measuring instrument for sampling are equipped with a Kistler 4067E pressure transducer, a Kistler 4624A amplifier and a Unitest 2008 computer system serviced with a recorder, processing and signal recording. For a thorough analysis, research conducted at different loads and different simulated engine failure.

3

Analysis of the possibilities of using modern process working marine diesel engine

Cuper-Przybylska D.

Journal of KONES

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2016

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Vol. 23, No. 2

81--88

EN

Increasing public awareness of environmental protection, it has caused a lot of emphasis on the marine industry to create reciprocating diesel environmentally friendly. Conducting research on real objects in the laboratory gives us the solution to the problem. However, such studies generate large financial resources, especially for marine engines also take a lot of time. Creating a simulation on a computer allows for the limited financial resources and also speeding up work on the piston marine engine. Computer simulations allow the creation of more complex physical models, which can describe the process of operating a marine diesel engine. However, the complication models cause a problem of the future understanding of the model and the possibility of subsequent use of it, for example for control of the engine. The more it established the need to simplify complex models of engines for better understand the processes occurring in the engine. The article is a description of the Mean Value Engine Model (MVEM), which were analysed individual blocks of the model together with the modifications related to the environment in which the engine will run. Modular model allows better modifying it and adding new blocks. This model is based mainly designed for application control. Because of the simple structure easy to adjust for different types of engines. This is particularly good for use in motor drivers. It allows better matching engine operating parameters to reduce emissions of harmful substances into the environment and also achieve better efficiency of marine engine.

4

Symulatory siłowni okrętowych w procesie podnoszenia kwalifikacji oficerów mechaników na współczesnych statkach morskich

Cuper-Przybylska D., Krefft J.

Autobusy : technika, eksploatacja, systemy transportowe

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2016

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R. 17, nr 4

44--48

PL

W artykule przedstawiono celowość kształcenia na symulatorach siłowni okrętowych oraz odniesiono się do przepisów regulujących kształcenie na symulatorach siłowni okrętowych. Przedstawiono bazę dydaktyczną symulatorów siłowni okrętowych Akademii Morskiej w Gdyni i dokonano tabelarycznego zestawienia symulatorów z wizualizacją typu 3D.

EN

The article presents the desirability of training based on the engine room simulators. National and international regulations regarding the education based on the simulators have been discused. Also the engine room simulators’ facilities installed in Gdynia Maritime University have been presented and tabularized based on the 3D simulators.

5

Koncepcja tłokowego silnika o spalaniu wewnętrznym z regeneracją ciepła

Łutowicz M., Cuper-Przybylska D.

Zeszyty Naukowe Akademii Marynarki Wojennej

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2013

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R. 54 nr 3 (194)

119--128

PL

W artykule omówiono koncepcję silnika, który będzie realizował obieg zbliżony do obiegu silnika Stirlinga w układzie β, w którym dostarczenie ciepła nastąpi poprzez spalanie wewnętrzne. Umożliwi to uzyskanie w impulsie temperatury do 2500 K, podczas gdy w silniku Stirlinga czynnik roboczy ogrzewa się tylko do temperatury ścianek wymiennika ciepła i rzadko przekracza temperaturę 1000 K. Wyższa temperatura czynnika roboczego zapewni wyższą sprawność silnika. Spaliny po oddaniu ciepła do ścianek komory spalania i regeneratora zostaną zastąpione zimnym powietrzem. Zmagazynowane ciepło zostanie wykorzystane do podgrzania sprężonego powietrza w następnym cyklu. Zapewni to wyższą sprawność niż w silniku Diesla.

EN

The paper discusses the concept of an engine that will perform circuit similar to the Stirling engine cycle in the system β, which will provide heat by burning inside. This will allow reaching temperature up to 2500 K in impulse, while in a Stirling engine the working medium is heated only to the temperature of the walls of the heat exchanger and rarely exceeds the temperature of 1000 K. The higher temperature of the working medium will provide higher efficiency. After transferring the heat to the walls of the combustion chamber and regenerator the exhaust gases will be replaced by cold air. The stored heat is used to heat the compressed air in the next cycle. This will ensure higher efficiency than the Diesel engine.