Search results for: GEAR PUMP

• PULP & PAPER-CANADA

  Journals

  ISSN: 0316-4004 , eISSN: 1923-3515

• EAR AND HEARING

  Journals

  ISSN: 0196-0202 , eISSN: 1538-4667

• Rozwój konstrukcji pomp satelitowych

  Publication

  • L. Osiecki

  - Napędy i Sterowanie - Year 2018

  Artykuł prezentuje budowę i działanie hydraulicznej pompy satelitowej pompy. Zbudowane i przebadane prototypy nowej pompy wykazały się wysokimi parametrami pracy i zdolnością tłoczenia różnych cieczy: oleju, wody i emulsji HFAE. Mechanizm pompy tworzą dwie nieokrągłe uzębione bieżnie: zewnętrzna obwodnica i wewnętrzna planeta oraz umieszczone pomiędzy nimi koła zębate (satelity). Obecny kształt planety i obwodnicy powoduje szybkie...

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• Rozwój konstrukcji pomp satelitowych

  Publication

  • P. Śliwiński
  • R. Jasiński

  - Year 2012

  W artykule opisano budowę i zasadę działania pompy satelitowej. Przedstawiono również podstawowe charakterystyki pompy pracującej z wykorzystaniem wody i oleju jako cieczy roboczych.

• Volumetric and torque efficiency of pumps during start-up in low ambient temperatures

  Publication

  • R. Jasiński

  - Year 2021

  The volumetric, torque and total efficiency of hydraulic pumps change during start-up in low ambient temperatures, as well as in thermal shock conditions, un-til they reach the set conditions. The time to reach steady-state conditions de-pends on many parameters: ambient temperature, flow rate, fluid temperature, design of hydraulic units. The author carried out tests of hydraulic pumps in the Hydraulics Laboratory of the Faculty...

• Effect of the working liquid compressibility on the picture of volumetric and mechanical losses in a high pressure displacement pump used in a hydrostatic drive. Part I Energy losses in a drive system, volumetric losses in a pump

  Publication

  • Z. Paszota

  - Year 2012

  Ściśliwość cieczy roboczej może znacząco zmienić wartości i proporcje współczynników strat objętościowych i mechanicznych w pompie wyporowej zastosowanej w układzie napędu hydrostatycznego. Wpływ ten jest szczególnie widoczny w trakcie pracy pod wysokim ciśnieniem a także wówczas, gdy występuje zapowietrzenie cieczy roboczej. W części I przedstawiono wykres zaproponowany przez autora, wzrostu mocy w układzie napędu hydrostatycznego...

• Effect of the working liquid compressibility on the picture of volumetric and mechanical losses in a high pressure displacement pump used in a hydrostatic drive. Part I Energy losses in a drive system, volumetric losses in a pump

  Publication

  • Z. Paszota

  - Polish Maritime Research - Year 2012

  Ściśliwość cieczy roboczej może znacząco zmienić wartości i proporcje współczynników strat objętościowych i mechanicznych w pompie wyporowej zastosowanej w układzie napędu hydrostatycznego. Wpływ ten jest szczególnie widoczny w trakcie pracy pod wysokim ciśnieniem a także wówczas, gdy występuje zapowietrzenie cieczy roboczej. W części I przedstawiono wykres zaproponowany przez autora, wzrostu mocy w układzie napędu hydrostatycznego...

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• Bioarchaeology of the Near East

  Journals

  ISSN: 1898-9403 , eISSN: 1899-962X

• Near Surface Geophysics

  Journals

  ISSN: 1569-4445 , eISSN: 1873-0604

• RESEARCH OF HYDRAULIC PISTON PUMPS’ START-UP IN LOW AMBIENT TEMPERATURES

  Publication

  • R. Jasiński

  - Year 2017

  Starting hydraulic pumps in low ambient temperatures may cause: decreased hydraulic-mechanical efficiency, larger vibration of hydraulic installation, faster wear and more frequent damage to the elements of pumps, change of material properties of elements, increase of pressure drop. As a result of increase of resistance of cold oil flow in the suction pipe, large underpressure may be experienced, causing incomplete filling of pump...

• An experimental study of emission and combustion characteristics of marine diesel engine with fuel pump malfunctions

  Publication

  • J. Kowalski

  - APPLIED THERMAL ENGINEERING - Year 2014

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• THE INFLUENCE OF WATER AND MINERAL OIL ON MECHANICAL LOSSES IN THE DISPLACEMENT PUMP FOR OFFSHORE AND MARINE APPLICATIONS

  Publication

  • P. Śliwiński

  - Polish Maritime Research - Year 2018

  In this paper mechanical losses in a positive displacement pump supplied with water and mineral oil (two liquids having significantly different viscosity and lubricating properties) are described and compared. The experimental tests were conducted using a special design (prototype) of a satellite pump. The design of the satellite pump is presented in the article. The pump features a non-circular tooth working mechanism. This pump...

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• The influence of water and mineral oil on volumetric losses in the displacement pump for offshore and marine applications

  Publication

  • P. Śliwiński

  - Polish Maritime Research - Year 2019

  In this paper volumetric losses in a positive displacement pump supplied with water and mineral oil are described and compared. The experimental tests were conducted using a prototype of a satellite pump (with a non-circular tooth working mechanism). In this paper the sources of volumetric losses in this pump are characterised. On this basis, a mathematical model of these losses has been presented. The results of the calculation...

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• Simulation of fluid structure interaction in a novel design of high pressure axial piston pump

  Publication

  • L. Osiecki
  • P. Patrosz
  • J. Piechna
  • B. Landvogt
  • B. Żyliński
  • T. Zawistowski

  - Archive of Mechanical Engineering - Year 2013

  A novel type of an axial, piston-driven high pressure hydraulic pump with variable capacity marks a significant improvement in the area of the hydraulic machinery design. Total discharge from hydrostatic forces eliminates a need for a servomechanism, thus simplifying operation, reducing weight and introducing the possibility of the pump displacement control by computer. PWK-type pumps, invented in the Gdansk University of Technology,...

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• Energy Loss Coefficients ki in a Displacement Pump and Hydraulic Motor used in Hydrostatic Drives

  Publication

  • A. Maczyszyn

  - Polish Maritime Research - Year 2019

  The article aims at defining and analysing the energy loss coefficients in design solutions of rotating displacement machines, with a piston machine as an example. The energy losses observed in these machines include mechanical loss, volumetric loss, and pressure loss. The scale and relations between these losses in different machines depend on machine design and manufacturing quality, and on operating parameters. The operating...

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• Field tests on hydrodynamic and hybrid operation of a bi-directional thrust bearing of a pump-turbine

  Publication

  • L. Dąbrowski
  • M. Wasilczuk
  • M. Wodtke

  - Year 2017

  In vertical shaft pump turbines operating in pumped storage power plants an important role is played by a thrust bearing. Because of bi-directional character of operation, thrust bearing tilting pads have to be supported symmetrically, which is known to be unfavourable from the point of view of their performance. Large thrust bearings have to be carefully designed so as to minimise excessive thermo-elastic pad deformations. The...

• Application of decision–making parametric structures in the analysis of a compound planetary gear

  Publication

  • A. Deptula
  • J. Drewniak
  • W. Macek
  • W. Macek

  - IOP Conference Series: Materials Science and Engineering - Year 2019

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• NEW CONCEPT OF HYBRID PROPULSION WITH HYDROSTATIC GEAR FOR INLAND WATER TRANSPORT

  Publication

  • D. Piątek

  - Polish Maritime Research - Year 2019

  The article presents the development of author’s concept of a diesel/hydraulic propulsion system for inland watercraft. Due to specific nature of vessel navigation on rivers, classical propulsion systems with shaft lines can be effectively replaced by systems with hydraulic power transmission. A solution is also presented of a hybrid design with extra electric port having the form of a pumping system driven from a battery of accumulators....

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• Dynamical processes in a multi-motor gear drive of heavy slabbing mill

  Publication

  • P. Krot

  - Journal of Vibroengineering - Year 2019

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• Uwarunkowania ekonomicznej efektywności pomp ciepła

  Publication

  • Z. Kusto

  - Year 2006

  Wzrastające zainteresowanie wykorzystaniem pomp ciepła w gospodarce komunalno-bytowej wymaga dokładnego rozeznania różnego rodzaju uwarunkowań technicznych i ekonomicznych. w książce podjęto próbę usystematyzowania tej tematyki. Omówiono sposób obliczania bilansu energetycznego ogrzewanych budynków, źródeł ciepła - wśród nich bilans energetyczny pompy ciepła. Zaproponowano możliwie najprostsze metody obliczania - dostępne dla...

• Displacement control in PWK-type pumps

  Publication

  • L. Osiecki
  • P. Śliwiński

  - Year 2009

  W referacie zaprezentowano konstrukcję mechanizmu sterowania wydajnością zastosowanego w pompach z rozrządem krzywkowym typu PWK. Przedstawiono wyniki wstępnych badań prototypu PWKZ-78 oraz komputerową analizę zjawisk zachodzących w komorze cylindrowej pompy.

• Displacement control in PWK-type pumps

  Publication

  • P. Śliwiński
  • L. Osiecki

  - Year 2010

  The most important, strategic goal however is creation of the variable displacement version of the new pump PWK. Thanks to full discharge of it's commutation mechanism from hydrostatic forces the variable pump can be directly controlled by low-energy actuator like proportional electromagnet or stepping motor. It means that costly and complicated hydraulic servomechanism (applied in all present variable displacement pumps) is no...

• Selection of drive engines for dredge pumps

  Publication

  • D. Bocheński

  - Journal of Polish CIMEEAC - Year 2012

  This paper presents the principles of selecting drive engines for dredge pumps, formulated by this author. In order to formulate them influence of drive engines on dredge pump characteristics and dredger effectiveness, have been analyzed. Also, an analysis of results of the author's operational investigations concerning energy consumption and parameters of excavated soil transport on board dredgers has been performed.

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• New generation of the satellite hydraulic pumps

  Publication

  • L. Osiecki

  - Journal of Mechanical and Energy Engineering - Year 2019

  Hydraulic satellite machines are known and produced in many versions, recognizable by the number of humps on their inner rotor and external gear, and therefore by the number of cooperating gears (satellites). All known shapes were however designed on the base of preliminary assumption that rotor’s and external gear’s pitch lines are formed by merging arcs, tangent to each other in the. This assumption makes calculations easier,...

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• Mathematical model defining volumetric losses of hydraulic oil compression in a variable capacity displacement pump

  Publication

  • Z. Paszota

  - Polish Maritime Research - Year 2014

  The objective of the work is to develop the capability of evaluating the volumetric losses of hydraulic oil compression in the working chambers of high pressure variable capacity displacement pump. Volumetric losses of oil compression must be determined as functions of the same parameters, which the volumetric losses due to leakage, resulting from the quality of design solution of the pump, are evaluated as dependent on and also...

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• The operating field of a hydrostatic drive system. Parameters of the energy efficiency investigations of pump and hydraulic motors

  Publication

  • Z. Paszota

  - Polish Maritime Research - Year 2009

  Przedstawiono pole pracy układu napędu hydrostatycznego. Uzasadniono podział parametrów pracy silnika hydraulicznego i pompy na parametry niezależne i zależne od pracy tych maszyn wyporowych i układu z nich utworzonego. Zaproponowano podjęcie tematu badawczego mającego na celu opracowanie metod wyznaczania charakterystyk energetycznych pomp i silników hydraulicznych obrotowych oraz zmodyfikowanych metod wyznaczania charakterystyk...

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• Selected aspects of determining the reliability of the pump subsystems with redundancy, used in main engine auxiliary systems

  Publication

  • R. Liberacki

  - Journal of Polish CIMEEAC - Year 2010

  The rules of classification societies require the use of redundancy in the systems essential for the safety of the ship. Duplication of pumps in the main engine auxiliary systems like cooling water system, lubricating oil system, fuel oil system is a good example here. Therefore, in the author's opinion, some attention should be paid to this issue. Two important questions arise here. Does duplication of pumps in marine systems...

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• Simulation of fluid structure interaction in a novel design of high pressure axial piston hydraulic pump

  Publication

  • L. Osiecki
  • P. Patrosz
  • B. Landvogt
  • J. Piechna
  • T. Zawistowski
  • B. Żyliński

  - Archive of Mechanical Engineering - Year 2013

  A novel type of an axial, piston-driven high pressure hydraulic pump with variable capacity marks a significant improvement in the area of the hydraulic machinery design. Total discharge from hydrostatic forces eliminates a need for a servomechanism, thus simplifying operation, reducing weight and introducing the possibility of the pump displacement control by computer. PWK-type pumps, invented in the Gdansk University of Technology,...

  Full text available to download

• Heat transfer enhancement of modular thermal energy storage unit for reversible heat pump cooperation

  Publication

  • R. Andrzejczyk
  • T. Muszyński
  • M. Fabrykiewicz
  • M. Rogowski

  - INTERNATIONAL JOURNAL OF THERMAL SCIENCES - Year 2023

  The following article presents experimental comparison research on a hexagonal shelland-tube latent thermal energy storage (TES). Such shape of a shell was deliberately chosen instead of a cylindrical one due to its high modularity and with intent for future applications in automobiles (EV and PHEV) air conditioning systems (HVAC). Two geometries of helical coils, acting as tubes, were studied in this article. One was a simple...

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• On the Consumption of Multimedia Content Using Mobile Devices: a Year to Year User Case Study

  Publication

  • P. Falkowski-Gilski

  - Archives of Acoustics - Year 2020

  In the early days, consumption of multimedia content related with audio signals was only possible in a stationary manner. The music player was located at home, with a necessary physical drive. An alternative way for an individual was to attend a live performance at a concert hall or host a private concert at home. To sum up, audio-visual effects were only reserved for a narrow group of recipients. Today, thanks to portable players,...

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• Correlations between the wear of car brake friction materials and airborne wear particle emissions

  Publication

  • W. Tarasiuk
  • K. Golak
  • Y. Tsybrii
  • O. Nosko

  - WEAR - Year 2020

  Airborne wear particles emitted from transport vehicle brakes are one of the main sources of toxic metals in inhalable particulate matter. Prediction of wear particle emissions may become more accurate if the relationship between the wear and particle emission characteristics is known. An experimental study was performed to investigate proportional correlations between the mass wear, 0.01–0.42 μm particle emission measured by a NanoScan...

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• Ship course control system taking into account the steering gear dynamic properties

  Publication

  • A. Witkowska
  • R. Śmierzchalski

  - Zeszyty Naukowe Akademii Morskiej w Szczecinie - Year 2012

  W artykule zostały przedstawione różne konfiguracje regulatorów nieliniowych do sterowania kursem statku. Zaprojektowane regulatory oparto na metodzie backstepping, regulatorze PD oraz sterowaniu ślizgowym. Algorytmy uwzględniają na etapie projektowania liniowe własności dynamiczne urządzenia wykonawczo - sterującego maszyny sterowej. Dokonano analizy porównawczej jakości pracy rozpatrywanych struktur sterowania podczas badań symulacyjnych...

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• Diagnostics of commutation unit in satellite pumps and motors

  Publication

  • P. Patrosz
  • P. Śliwiński

  - Hydraulika a pneumatika - Year 2013

  The article describes a part of the research on the development of satellite pumps and motors, conducted on Gdansk University of Technology as a part of grant "New elaborate of hydraulic satellite machines for drives with vegetable liquids and non-flammable liquids" (LIDER/35/102/L-2/10/NCBiR/2011) funded by the National Centre for Research and Development in Poland. The presented area includes the diagnostics of commutation units...

• Diagnostics of commutation unit in satellite pumps and motors

  Publication

  • P. Patrosz
  • P. Śliwiński

  - Year 2013

  The article describes a part of the research on the development of satellite pumps and motors, conducted on Gdansk University of Technology as a part of grant "New elaborate of hydraulic satellite machines for drives with vegetable liquids and non-flammable liquids" (LIDER/35/102/L-2/10/NCBiR/2011) funded by the National Centre for Research and Development in Poland. The presented area includes the diagnostics of commutation units...

• Axial piston pumps with camdriven commutation unit

  Publication

  • L. Osiecki

  - Year 2003

  Przedstawiono wyniki badań prototypów pomp wielotłoczkowych osiowych wyposażonych w rozrząd krzywkowy oraz ich porównanie z rezultatami osiąganymi przez produkowane obecnie jednostki z rozrządem czołowym. Podano dane techniczne pomp nowego typu wchodzących do produkcji.

• Hygienic design of pumps, homogenisers and dampening devices.

  Publication

  • C. Cobian
  • J. Friedssch
  • T. Gilmore
  • H. Johl
  • T. Matuszek
  • A. Maule
  • K. Renzelmann
  • R. Stahlkopf
  • T. Tuuslev

  - Year 2004

  Przedstawiono wymagania dotyczące materiałów oraz ich przygotowania, a także dla powierzchni wewnętrznych i zewnętrznych urządzeń takich jak pompy, homogenizatory i nawilżacze oraz ich elementów, zwłaszcza wielu typów uszczelnień, ze względu na ich zastosowanie do produkcji żywności w warunkach sanitarno-higienicznych i maksymalne wyeliminowanie zagożeń dla jakości podczas jej wytwarzania w różnorodnych procesach technologicznych.

• Two dimensional inverse solution for diagonal pumps

  Publication

  • R. Puzyrewski
  • P. Flaszyński
  • K. Żochowski

  - Year 2005

  W pracy przedstawiono rozwiązanie zadania odwrotnego dla wirnika i kierownicy pompy diagonalnej. Dla założonego kształtu powierzchni prądu wyznaczono kształt łopatek obu palisad. Geometria kanałów łopatkowych została wyznaczona w wyniku rozwiązania układu równań zapisanych w krzywoliniowym układzie współrzędnych. W pracy przedstawiono fotografie wirnika wykonanego techniką Rapid Prototyping.

• Influence of the low ambient temperature on the start-up process of hydraulic pumps

  Publication

  • R. Jasiński

  - Year 2019

  Starting hydraulic pumps in low ambient temperatures may cause: decreased hydraulic-mechanical efficiency, larger vibration of hydraulic installation, faster wear and more frequent damage to the elements of pumps, change of material properties of elements, increase of pressure drop. As a result of pressure drop in the suction pipe, large underpressure may be experienced, causing incomplete filling of pump working chambers with...

• CFD analysis of a flow in commutation window in PWK pump

  Open Research Data

  open access

  • P. Patrosz
  • L. Osiecki

  The included data is a result of CFD analysis of a flow in a commutation window in PWK pump. The results were obtained for different pressures, viscosities and geometrical parameters of the gap.  All the rows and columns have descriptions similar as in PhD Thesis: "Kompensacja skoków ciśnienia w pompie tłoczkowej o zmiennej wydajności z rozrządem krzywkowym",...

• Parametric study of fluid flow and heat transfer over louvered fins of air heat pump evaporator

  Publication

  • T. Muszyński
  • S. Kozieł

  - Archives of Thermodynamics - Year 2016

  Two-dimensional numerical investigations of the fluid flow and heat transfer have been carried out for the laminar flow of the louvered fin-plate heat exchanger, designed to work as an air-source heat pump evap- orator. The transferred heat and the pressure drop predicted by simulation have been compared with the corresponding experimental data taken from the literature. Two dimensional analyses of the louvered fins with varying...

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• Design and Thermodynamic Analysis of a Steam Ejector Refrigeration/Heat Pump System for Naval Surface Ship Applications

  Publication

  • c. ezgi
  • I. Girgin

  - ENTROPY - Year 2015

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• New Design of Axial Piston Pump with Displaced Swash Plate Axis of Rotation for Hydro-Mechanical Transmissions

  Publication

  • P. Załuski
  • P. Patrosz
  • M. Bąk

  - Year 2023

  This paper presents a prototype design of an axial piston pump with displaced swash plate axis of rotation in two directions of discharge with electronic control intended for installation on a hydraulic-mechanical gearbox dedicated to working machines. The effect of displacement of the swash plate rotation axis on dead space volume and volumetric efficiency is presented. The construction and principle of operation of the capacity...

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• Revista de Psicologia PUCP

  Journals

  ISSN: 0254-9247 , eISSN: 1609-7564

• JOURNAL OF PULP AND PAPER SCIENCE

  Journals

  ISSN: 0826-6220

• Geam-Geoingegneria Ambientale e Mineraria-Geam-Geoengineering Environment and Mining

  Journals

  ISSN: 1121-9041

• The Effect of a Gear Oil on Abrasion, Scuffing, and Pitting of the DLC-Coated 18CrNiMo7-6 Steel

  Publication

  • R. Michalczewski
  • M. Kalbarczyk
  • A. Mańkowska-Snopczyńska
  • E. Osuch-Słomka
  • W. Piekoszewski
  • A. Snarski-Adamski
  • M. Szczerek
  • W. Tuszyński
  • J. Wulczyński
  • A. Wieczorek

  - Coatings - Year 2018

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• A design concept of main propulsion system with hydrostatic transmission gear for inland waterways ship

  Publication

  • C. Dymarski
  • G. Skorek

  - Polish Maritime Research - Year 2006

  Celem analizy jest przedstawienie koncepcji napędu głównego statku oraz określenie jego sprawności całkowitej. Zrealizowanie zamierzenia przedstawionego powyżej wymaga spojrzenia na opis strat i sprawności energetycznej przekładni hydrostatycznej, uwzględniający jak najdalej idącą jego prostotę. Obraz wzajemnego wpływu strat we wszystkich elementach układu hydraulicznego okazuje się bardzo złożony. Przy założeniu koniecznych uproszczeń...

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• EVALUATION OF SURFACE ROUGHNESS PARAMETERS OF TURNED GEAR WHEELS HOLES MACHINED BY BALL BURNISHING

  Publication

  • M. Dobrzyński
  • W. Przybylski
  • P. Waszczur

  - TRIBOLOGIA - Year 2011

  W artykule zaprezentowano wyniki z badań eksperymentalnych dotyczących przygotowania powierzchni do obróbki wykończeniowej nagniataniem. Badania dotyczyły obróbki materiałów w stanie utwardzonym po hartowaniu. analizowano wpływ parametrów toczenia na twardo na uzyskiwane wartości parametrów chropowatości powierzchni jako wejściowych przed procesem nagniatania.

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• Ancient Near Eastern Studies

  Journals

  ISSN: 1378-4641 , eISSN: 1783-1326

• Journal of Near Eastern Studies

  Journals

  ISSN: 0022-2968 , eISSN: 1545-6978