Temat: cylinder pressure - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Unsteady angular speed of diesel engine crankshaft preliminary examination
Autorzy:: Łutowicz, M.
Powiązania:: https://bibliotekanauki.pl/articles/241845.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: cylinder pressure measurement
piston engine
indicating
Opis:: The paper discusses issues related to measurement of unsteady angular speed of diesel engine crankshaft. The focus is on the selection and optimization of the measuring method to obtain high accuracy, eliminating errors resulting from the unsteady angular speed of markers on diesel engine crankshaft. A method that uses a counter markers placed on the engine flywheel had been worked out. Markers location has been read out by two slit optical sensors. Number of markers and the distance between the sensors were chosen so as to counter tooth during the transition between the sensors count the more than 10,000 pulses at rated speed of the shaft. This provided a measurement method resolution at 0.01 %. Initial studies were performed on one-cylinder diesel engine with the greatest unsteady of angular speed. Additionally analysis which treated the measured unsteady angular speed of diesel engine crankshaft as a deforming pressure mapping as a function of the calculated piston movement was performed. This deformation is caused by the assumption that a constant rotation speed is proportional to time, and measurements are made at a constant rate. In the case of synchronized measurements of PLL circuits duplicating markers on the shaft against the expectations the deformations due to the activity of the follow-up mode of such systems are increased. The influence of these deformations on the designation of an average error of cylinder indicated pressure and other parameters obtained from the analysis of the pressure and vibration envelope has been examined.
Źródło:: Journal of KONES; 2012, 19, 4; 393-399
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The lean mixture combustion of simulated producer gas in SI engine
Autorzy:: Przybyła, G.
Szlęk, A.
Ziółkowski, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/244387.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: micro CHP
combustion engine
in-cylinder pressure
Opis:: In this paper the experimental results of spark ignited (SI) engine fuelled with lean mixture of simulated producer gas compared with chosen gaseous fuels are presented. The SI engine test fuelled with simulated producer gas, natural gas and simulated biogas with variable value of excess air ratio has been done. The experiments were carried out on the petrol engine with a low engine displacement. Typical SI engine was selected in order to evaluate the potential application of gaseous fuel (i.e. producer gas, natural gas or biogas). These types of engines are available on a wide scale and commonly used in automotive sector because of the low purchase price and operating costs. It is expected that after minor modifications, the engine can easily operate in micro CHP system. The main goal of this work is to determine the performance of the engine and its impact on the environment during the combustion of the lean producer gas mixtures. The study shows the impact of both the excess air ratio and the type of fuel used for engine performance and emission index. Combustion of lean mixtures of producer gas leads to an increase of carbon monoxide in the exhaust. Increasing the value of excess air ratio affects the growth of indicated efficiency of the engine
Źródło:: Journal of KONES; 2013, 20, 3; 331-338
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Theoretical and real working cycle of four stroke piston engine
Autorzy:: Ambrozik, A.
Jankowski, A.
Slezak, M.
Powiązania:: https://bibliotekanauki.pl/articles/243165.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engine
thermodynamics
working cycle
cylinder pressure
Opis:: The most important problems concerning analyses of generalized computational thermodynamical working cycle of the four-stroke combustion engine are result of the identification of real indicating diagram. The analysis of working cycle of the four-stroke combustion engine is realized from point of view heat efficiency, the average theoretical cycle pressure, as well as of the influence of the organization working cycle on the value of the maximum pressure in the cylinder of a combustion engine. A novel mathematical model reflecting elementary processes occurring in the cylinder of a combustion engine and connected with it intake and exhaust systems of engine were proposed. Thermodynamical working cycles of four-stroke piston engines, theoretical working cycle of a four-stroke piston engine, thermal efficiency of the theoretical thermodynamic generalised engine work cycle, mean theoretical pressure of the generalised thermodynamic work cycle of a combustion engine, maximum pressure of the theoretical thermodynamic work cycle of a combustion engine, comparative working cycles of piston engines, real working cycle of four-stroke piston engines are presented In het paper. The methods of analyses and calculations referring these engines work cycles were presented. These method show advisability and needs of using them to theoretical calculations and analyses of real work cycles. Generalized engine work cycle was proposed.
Źródło:: Journal of KONES; 2007, 14, 2; 9-18
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Multiterminal cylinder pressure monitoring-diagnostic system of natural gas motor compressors of GMVH type in Krio Odolanów
Autorzy:: Kłos, M.
Łutowicz, M.
Polanowski, S.
Powiązania:: https://bibliotekanauki.pl/articles/246934.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: cylinder pressure monitoring system
natural gas motor compressors
Opis:: The paper characterises the current state of development and use of equipment and monitoring-diagnostic systems of engine cylinders and reciprocating compressors. It has presented a prototype system for monitoring and diagnostics of motor compressors of GMVH type natural gas installed in the Krio Company in Odolanów. The system monitors on-line 5 stands of motor compressors. Simultaneously 12 engine cylinders and 6 compressor cylinders of each motor compressor are indicated - a total of 90 cylinders. Driven by the need to reduce the number of monitors in the control room, aprinciple to operate the system through one monitor with the capability of immediate switching-off of a monitored motor compressor has been adopted. A charts menu provides for simultaneous on-line observation of the work of all the cylinders of a selected motor compressor. For each cylinder of both engine and compressor, against the background of the average from 16 runs and average for the cylinder's unit there are presented a few indicator diagrams, which allows for observation of the variability of a cylinder 's work, which in a spark-ignition engines can be significant. Values of main parameters ofthe cylinder's work are presented in tables and bar charts. These include: the maximum pressure of combustion and compression as well as average indicated pressures. The indicated powers are determined for the engine and compressors and a mechanical efficiency of the unit. The fiber-optic "Optrand" sensors have been used for indication, mainly to meet the need of spark-safety requirements. For the measurement of pressure, 12-bit converter cards ofown construction have been applied. Values of pressure have been sampled with angle axis pulses 0.5° crankshaft rotation. Ethernet connections were applied to transfer data between the pumping station and control room. The study characterises the main conclusions arising from past experience of system use.
Źródło:: Journal of KONES; 2010, 17, 2; 195-202
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: The heat transfer coefficient calculation in the ice cylinder based on in-cylinder pressure data
Autorzy:: Przybyła, G.
Postrzednik, S.
Żmudka, Z.
Powiązania:: https://bibliotekanauki.pl/articles/247975.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: heat transfer coefficient
combustion engines
in-cylinder pressure
Opis:: In this paper the calculations algorithm of heat-transfer coefficient in the combustion chamber of the internal combustion engine is presented. Developed algorithm is based on the in cylinder pressure data. The proposed algorithm can be helpful to determine the average values of heat-transfer coefficient from working medium to the combustion chamber walls (crown of a cylinder head, cylinder walls and piston head) during combustion process. The calculation method includes modified one zone heat release model in combustion chamber of SI engine. Proposed method consists in closing the energy balance equation by the coefficient which expresses the heat losses to the walls of the combustion chamber. The average value of the heat losses during combustion process is calculated by two steps. Firstly, the integration of the energy balance equation (without specifying the heat losses) leads to designation of the so-called net value of heat released in cylinder. In the next step the amount of the total energy supplied to the cylinder is determined taking into account the chemical energy of the supplied fuel. The difference between the supplied value of chemical energy and heat released net value allows to determine the heat losses average value. In last stage, the heat flow equation leads to calculate the mean value of heat transfer coefficient during combustion process.
Źródło:: Journal of KONES; 2013, 20, 4; 382-388
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Combustion pressure appraisal in marine diesel engine
Autorzy:: Borkowski, T.
Kowalak, P.
Marcinek, M.
Bonisławski, M.
Powiązania:: https://bibliotekanauki.pl/articles/247275.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: marine diesel engine
in-cylinder pressure analysis
combustion pressure measurement
Opis:: The practical design of the marine engine multi in-cylinder pressure acquisition system has been presented. The system operational properties and measurement methodology is aimed the online marine diesel engine applications. The design of engine combustion pressure recording system is based on piezoelectric sensors set that comprises quartz pressure element and charge amplifier, mounted on the indicator pipes, equipped with valves. The required crank degree signal is obtained from shaft encoder that is installed on the test bed engine shaft-line (free end of the hydraulic break). The encoder's TDC dedicated reference pulse is able generate simultaneously at the cylinder 1 and 6 in TDC position. The accuracy of the static crankshaft position calibration was evaluated. Additionally, a complex timing system was developed for individual cylinder TDC and crankshaft positioning definition. Before real time data acquisition starts, the number of engine cycles is defined for recording and the first pulse of each crankshaft revolution is used as trigger signal, so that all instantaneous pressure and crank angle signals acquisition can be started at the identical crankshaft position. The method provides required numbers of combustion cycles to be measured for time domain averaging and off line processing.
Źródło:: Journal of KONES; 2011, 18, 4; 25-32
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: In cylinder pressure assessment from marine diesel engine
Autorzy:: Borkowski, T.
Kowalak, P.
Powiązania:: https://bibliotekanauki.pl/articles/242200.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: marine diesel engine
in-cylinder pressure analysis
combustion pressure measurement
Opis:: This paper explores the feasibility ofusing in-cylinderpressure-based variables in terms of certain class of errors, caused by indirect pressure measurement. Experimental direct in-cylinder measurement pressure setup was constructed, to make comparisons with standard indicator channel and indicator valve design. Zero-dimensional model was used for particular combustion system design. Subsequently, paper describes the application of a zero-dimensional combustion model for pressure signal analysis in cylinder head indicating passage of medium speed marine diesel engine. Recording of engine cylinder pressure development and its qualified evaluation is common aid for maintenance. Especially the outline of experimental test-bed, the injector nozzle equipped with piezoelectric pressure transducer, measurement system specification, B type uncertainty -mean angular speed characteristic, wavelet "denoising" setting and signals comparison, engine cylinder indicator model channel, cylinder pressure traces influenced by engine speed and load, cylinder pressure traces influenced by engine load and speed with two different indicator channel lengths, Indicated engine cylinder power in motoredmode of operation are presented in the paper.
Źródło:: Journal of KONES; 2009, 16, 3; 39-46
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Conception of cylinder pressure based diesel injection control system
Autorzy:: Bieniek, A.
Powiązania:: https://bibliotekanauki.pl/articles/245444.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diesel injection
cylinder pressure
control system
emission
heat release
Opis:: Control of diesel fuel injection is very important and has influence not only at engine operating conditions but also at emission of toxic gases as NOx, HC, and Particulate Matter (PM) are effect of combustion process. Directly observing of combustion process is very difficult, but implementation to injection control algorithm procedures based on additional sensors as knock sensor, cylinder pressure sensor and observing of rotational speed course could give enough information to optimize control algorithm. In traditional diffusion-burn diesel combustion start of combustion occurs a cetane-number based time delay after the start of the fuel injection. To fulfill of new emission standards is need to observing not only start of combustion but also whole combustion process. In the paper conception of injection control system applied with combustion process observer based on additional sensors. Closed-loop feedback control of cylinder pressure sensor and advanced control algorithm with high-resolution rotational speed sensor offers the potential to improve controllability of combustion process. Advanced control system based on heat release estimated from cylinder pressure and rotational speed fluctuations enabling improving engine exhaust emissions, engine performance and reduced noise emission. Introducing into control system a low cost glow plug integrated cylinder pressure sensor allow to achieve complete injection control system with advanced functions which could be very effective also in aspect of fuel consumption reduction.
Źródło:: Journal of KONES; 2011, 18, 3; 27-35
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Variable valve timing scheduling in a 4-stroke internal combustion cylinder utilizing artificial neural networks
Autorzy:: Bapiri, S.
Chaghaneh, O.
Ghomashi, H.
Powiązania:: https://bibliotekanauki.pl/articles/103166.pdf
Data publikacji:: 2017
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: variable valve timing
cylinder pressure
independent valve operation
artificial neural network
Opis:: The apparently simple structure of a four-stroke internal combustion cylinder belies the complicated problem of optimizing valve operation in response to a change in crankshaft rotation speed. The objective of this study was to determine the cylinder pressure for valve event angles in order to determine the optimal strategy for the timing of valve events when independently-actuated valves are available. In this work, an artificial neural network is applied to create a prediction matrix to anticipate the best variable valve timing approach according to rotation speed.
Źródło:: Advances in Science and Technology. Research Journal; 2017, 11, 3; 114-121
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Experimental manners of a interference reduction of chosen measuring signals of a generating set in conditions of a marine power plants
Eksperymentalne sposoby redukcji zakłóceń wybranych sygnałów pomiarowych zespołu prądotwórczego w warunkach laboratorium siłowni okrętowych
Autorzy:: Monieta, J.
Nowicki, M.
Powiązania:: https://bibliotekanauki.pl/articles/329148.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:: marine power plants
generating sets
in-cylinder pressure course
interference
siłownia okrętowa
zespół prądotwórczy
przebieg ciśnienia cylindrowego
zakłócenia
Opis:: The article presents problems occurring during the signals processing of the parameters of working processes of internal combustion engines in tests, while powering the measuring apparatus from the electric network of the marine power plant laboratory. Various experimental methods of separation were used to identify and then eliminate interference. On the basis of analyses carried out in the domain of time and frequency of the in-cylinders pressure signals of internal combustion engines and their wavelet decomposition, attempts were made to determine and eliminate the sources of interference. It has been shown that interference was penetrating the measuring equipment through the supply network. The developed methods of reducing interference in the laboratory conditions can be applied on the marine vessels. On the basis of the conducted tests, it can be concluded that the reduction of interference of pressure measurement signals in the engine cylinder is most effective when the computer is powered only from the battery while the measuring circuit is powered directly from the power network.
W artykule przedstawiono problemy występujące w czasie przetwarzania sygnałów parametrów procesów roboczych w badaniach silników spalinowych, przy zasilaniu aparatury pomiarowej z sieci elektrycznej laboratorium siłowni okrętowej. Dla identyfikacji i następnie eliminacji zakłóceń zastosowano różne eksperymentalne metody ich separacji. Na podstawie wykonanych analiz w dziedzinie czasu i częstotliwości sygnałów ciśnienia w cylindrach silników spalinowych oraz ich dekompozycji falkowych próbowano ustalić źródła zakłóceń oraz je eliminować. Wykazano, że zakłócenia przedostają się do aparatury pomiarowej przez sieć zasilającą. Wypracowane sposoby redukcji zakłóceń w warunkach laboratoryjnych mogą być zastosowane na statkach morskich. Na podstawie przeprowadzonych badań można stwierdzić, że redukcja zakłóceń sygnałów pomiarowych ciśnienia w cylindrze silnika jest najskuteczniejsza, gdy komputer zasilany jest tylko z baterii, a tor pomiarowy bezpośrednio z sieci elektroenergetycznej.
Źródło:: Diagnostyka; 2018, 19, 1; 93-102
1641-6414
2449-5220
Pojawia się w:: Diagnostyka
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Fuel recognition in compression ignition engine in the real time
Rozpoznawanie spalanego paliwa w silniku o zapłonie samoczynnym w czasie rzeczywistym
Autorzy:: Kekez, M.
Radziszewski, L.
Powiązania:: https://bibliotekanauki.pl/articles/158513.pdf
Data publikacji:: 2013
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: diesel engines
cylinder pressure
type of fuel
artificial intelligence
silniki o zapłonie samoczynnym
ciśnienie w cylindrze
rodzaj paliwa
sztuczna inteligencja
Opis:: Contemporary engines allow controlling the fuel injection process, which should be adjusted to a given fuel. On test bench the engine was fuelled by diesel oil, RME or its blends with diesel oil. In this paper selected artificial intelligence methods are used to build classifiers which recognize type of fuel using cylinder pressure curves recorded and averaged for 20, 30, 40, or 50 consecutive engine working cycles. The accuracy of these methods is compared. There is presented the estimation of the minimum number of consecutive engine cycles during which the pressure curves are recorded, required for recognition of type of fuel by a classifier.
Silniki o zapłonie samoczynnym mogą być zasilane różnymi paliwami. Współczesne silniki pozwalają na sterowanie procesem zasilania, który powinien być przystosowany do danego paliwa. Na stanowisku badawczym, silnik był zasilany olejem napędowym, paliwem RME (estry metylowe kwasów tłuszczowych oleju rzepakowego) oraz mieszankami tych paliw. W artykule zastosowano wybrane metody sztucznej inteligencji w celu zbudowania klasyfikatora, który rozpoznaje typ paliwa na podstawie przebiegów ciśnienia w cylindrze zarejestrowanych i uśrednionych dla 20, 30, 40 oraz 50 kolejnych cykli roboczych silnika. Przedstawiono porównanie dokładności zastosowanych metod (sztuczne sieci neuronowe oraz drzewa decyzyjne CART i CHAID, zaimplementowane w pakiecie Statistica Data Mining, a także drzewo decyzyjne See5). Przedstawiono oszacowanie minimalnej liczby kolejnych cykli pracy silnika, podczas których rejestrowane są przebiegi ciśnienia, niezbędnej do rozpoznania typu paliwa przez klasyfikator. Zaproponowano również implementację klasyfikatora na mikrokontrolerze, pozwalającą na rozpoznawanie typu paliwa w czasie rzeczywistym.
Źródło:: Pomiary Automatyka Kontrola; 2013, R. 59, nr 5, 5; 470-472
0032-4140
Pojawia się w:: Pomiary Automatyka Kontrola
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Investigations of diesel engine in the road test
Badanie silnika o ZS w teście drogowym
Autorzy:: Grytsyuk, O.
Vrublevskyi, O.
Powiązania:: https://bibliotekanauki.pl/articles/327378.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:: vehicle
diesel engine
measuring equipment
fuel consumption
cylinder pressure
pojazd
silnik o zapłonie samoczynnym
aparatura pomiarowa
zużycie paliwa
ciśnienie w cylindrze
Opis:: This article describes the details of the method designed to determine parameters of vehicle’s internal combustion engine with compression ignition (CI) during road tests. The method requires simultaneous measurements for the crankshaft rotation frequency, fuel pressure in the injector, pressure in the combustion chamber, air pressure and temperature in the intake system. More, this method utilizes possibilities of the GPS navigation - all the received data is being synchronized with navigation data and saved to the database. Fuel consumption was calculated using the original method based on processing the pressure data from inside the cylinder alongside with the fuel injection parameters, previously received from the injection system and engine tests in the laboratory. Obtained characteristics allow to perform detailed analysis for the engine’s single work cycle in the transient processes, which are the biggest part of engine’s common work conditions. Measurements results received with help of the created experimental gear were used to determine CI engine parameters. Those parameters may help in simulation of the engine work inside the vehicle, and could be used in engine parameters optimization tasks.
W artykule przedstawiono szczegóły metody wyznaczenia parametrów oraz charakterystyk silnika o zapłonie samoczynnym (ZS) pojazdu podczas badań drogowych. Metoda ta polega na jednoczesnym pomiarze obrotów wału korbowego, ciśnienia paliwa we wtryskiwaczu, ciśnienia w komorze spalania, ciśnienia i temperatury powietrza w układzie dolotowym. Metoda łączy również system nawigacji GPS, z którego informacja jest synchronizowana z pozostałymi danymi z pomiarów i wpisana do wspólnej bazy danych. Zużycie paliwa zostało określone oryginalną metodą na podstawie przetwarzania wartości ciśnienia w cylindrze i wtrysku paliwa, wykorzystania rzeczywistych charakterystyk wtryskiwacza uzyskanych podczas badań laboratoryjnych układu paliwowego i silnika. Uzyskane charakterystyki wtrysku pozwalają szczegółowo analizować pojedynczy cykl pracy silnika w procesach przejściowych, z których prawie całkowicie składa się praca silnika samochodowego. Wyniki pomiarów za pomocą opracowanej aparatury badawczej zostały wykorzystane do wyznaczenia parametrów silnika ZS. Wyznaczone parametry pozwoliły odtworzyć działanie silnika podczas eksploatacji w pojeździe na hamowni silnikowej, dzięki czemu można zoptymalizować jego działanie jako jednostki napędowej w samochodzie.
Źródło:: Diagnostyka; 2018, 19, 2; 89-94
1641-6414
2449-5220
Pojawia się w:: Diagnostyka
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Marine diesels working cycle monitoring on the base of IMES GmbH pressure sensors data
Autorzy:: Neumann, Stefan
Varbanets, Roman
Kyrylash, Olena
Maulevych, Vladyslav
Yeryganov, Oleksiy
Powiązania:: https://bibliotekanauki.pl/articles/327592.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:: diesel engine
cylinder pressure monitoring
top dead center
gas pressure sensor
Butterworth low-pass filter
mean indicated pressure
indicator valve channel
silnik spalinowy
czujnik ciśnienia
monitorowanie
wydajność
Opis:: The paper presents algorithms for marine diesel engines’ working process monitoring designed by analyzing data obtained with IMES pressure sensors. Main features and properties of IMES sensors, used for 2- and 4-stroke modern marine diesel engines, are presented here. The pressure-time diagrams were taken as a basis for creating algorithms for marine diesel engines’ working process monitoring. The task of preliminary calculation of top dead center position (TDC) of a cylinder was solved using polytropic compression equation. TDC position was calculated using the equation P' = 0. Then algorithm for calculating the average indicator pressure and the indicator power of the cylinder has been determined. The CFD methods show how indicator valve channel influences the results of marine diesel engines’ working process monitoring. With the example of compression curves in a cylinder, it’s shown amplitude and phase distortions introduced into pressure measurements by the indicator valve channel. Such research work is important and actual in time due to the use of marine diesel portable performance analysis systems.
Źródło:: Diagnostyka; 2019, 20, 2; 21-26
1641-6414
2449-5220
Pojawia się w:: Diagnostyka
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Two-tier low pressure cylinders for condensing steam turbines
Autorzy:: Zaryankin, A.
Powiązania:: https://bibliotekanauki.pl/articles/175404.pdf
Data publikacji:: 2014
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: two-tier stage
two-tier low pressure cylinder
fork-shaped blade
Opis:: The paper deals with new construction of low pressure cylinder (LPC) for condensing steam turbines. The flow path of these cylinders is formed on the base of new two-tier stages. As opposed to well known Baumann’s stages newer two-tier stages is a combination of two independent stages with own blades set. Such construction allows to decrease the number of LPC in the existing turbines or to ensure their operation with very high vacuum in the condenser or increases in 1.5 times power capacity of new turbines without increasing of the last stage blade length and LPC number.
Źródło:: Transactions of the Institute of Fluid-Flow Machinery; 2014, 126; 123-130
0079-3205
Pojawia się w:: Transactions of the Institute of Fluid-Flow Machinery
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Technical solution for improve the efficiency of the steam turbines
Autorzy:: Bilyk, Y.
Martsinkovsky, V. S.
Nosowa, O.
Tarelnik, V.
Yurko, V.
Powiązania:: https://bibliotekanauki.pl/articles/175480.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: two-tier stage
two-tier low pressure cylinder
fork-shaped blade
Opis:: This paper presents effective ways to increase the carrying and reliability of thrust bearings. Technical solutions implemented by TRIZ Ltd have been considered. In comparative characteristics of the bearing took into account such factors as: capacity, peripheral speed at the average radius, speed at the periphery, specific pressure, specific lubricant consumption. Comprehensive analysis of the working conditions of bearing was aimed to protect against electroerosion.
Źródło:: Transactions of the Institute of Fluid-Flow Machinery; 2015, 130; 31-55
0079-3205
Pojawia się w:: Transactions of the Institute of Fluid-Flow Machinery
Dostawca treści:: Biblioteka Nauki

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