Wyniki wyszukiwania - BazTech

1

Investigation of novel ceramic materials (Al2O3 and SSiC) for high-pressure pumps delivery sections

Idzior Marek, Karpiuk Wojciech, Smolec Rafał

Combustion Engines

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2024

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R. 63, nr 1

153--160

EN

In this paper, a comparative analysis of structural materials used in the construction of high-pressure pumps delivery sections was carried out. The focus was on a comparison of the ceramic materials such as corundum (alumina, Al2O3) and silicon carbide (solid-state sintered) - SSiC with bearing alloy steel 100Cr6, that is the most common material used to make pistons and cylinders of the delivery section of common rail injection pumps. Simulations performed using the finite element method have proven that ceramic materials have a number of advantages and could therefore be an interesting substitute for materials traditionally used in this area.

2

FEM numerical simulation of contact stresses between driving shaft and hub impeller of fuel pump

Wiater M., Chladek G., Żmudzki J.

Journal of Achievements in Materials and Manufacturing Engineering

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2022

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Vol. 113, nr 1

13--21

EN

Purpose: The aim of the work was to test the contact stresses in the model system of the turbine hub cooperating with the fuel pump drive shaft. The hypothesis of the work was that, by means of FEA, it is possible to assess the contact stresses in the materials of the turbine hub and the fuel pump shaft during torque transmission. Design/methodology/approach: A turbine with fibre-reinforced polyphenylene sulphide (PPS) composite cooperating with a stainless steel shaft (X46Cr13/1.4034) in a commonly used D-flat shape joint was selected for the experimental research. To assess contact stresses, the CAD model (NX, Siemens) of the entire turbine was limited to the hub area. The drive shaft is supported in accordance with the bearing in the fuel pump, and the possibility of rotation about the axis along the length of the torque-producing magnet is taken away. The system was loaded with a torque of 200 Nmm on the turbine. The turbine hub and shaft were calculated, taking into account the phenomenon of contact detachment or slip at the value of the friction coefficient of 0.1. Findings: The pressure transmission area was found in the area at the edge of the flat surface D-flat and on the opposite side of the D-convexity. The contact stresses on the D-flat side reached values close to the composite strength. Research limitations/implications: The studies did not take into account the technological inaccuracies, thermal deformation, local material properties, and wear. The value of the friction coefficient was not measured in realistic conditions with fuel lubrication. Practical implications: FEA has been achieved, which allows to reduce the cost of experimental research. Originality/value: The proposed model allows for further studies of the influence of elasticity of various materials and structures on contact stresses in order to assess wear resistance.

3

Analysis of the applicability of a common rail pump for an aircraft engine

Sochaczewski Rafał, Szlachetka Marcin, Wendeker Mirosław, Karpiński Paweł

Combustion Engines

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2019

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R. 58, nr 4

192--197

EN

The paper presents an analysis of the possibility of using a common rail pump to supply an aircraft compression-ignition engine. It is an engine with a two-stroke cycle, three cylinders, opposing pistons and 100 kW power. Its each combustion chamber is supply by one or two injectors controlled by electromagnetic valves. In order to assess the possibility of using a common rail pump, four high-pressure pumps were tested on a bench. They are piston pumps differing in the number and geometry of their pumping sections. The analysis included the pumping output, the torque on the pump drive shaft and the power needed to drive the pump. The weight and overall dimensions of the pump were also considered, including the arrangement of the pumping sections and the way the drive is transmitted. The research allowed to optimize the engine power supply system depending on fuel demand and the way the pump is mounted on the engine.

4

Wpływ biopaliw na działanie układów Common Rail

Osipowicz T.

Autobusy : technika, eksploatacja, systemy transportowe

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2014

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R. 15, nr 6

210-213

PL

Celem artykułu była analiza stanu technicznego systemu Common Rail pracującego na biopaliwie. Głównym obiektem badawczym były wtryskiwacze paliwa. Silnik pracował na estrze metylowym oleju rzepakowego (B100). Pojazd przejechał około 5000 km i zasilany był paliwem B100. Następnie zdemontowano i rozebrano na elementy składowe wtryskiwacze paliwa, które zostały poddane weryfikacji i analizie.

EN

The aim of article was analysis technical condition Common Rail system working on biodiesel. Main researches object was fuel injector. Engine worked on rape methyl ester (B100). Vehicle traveled 5000 km and was powered by B100 fuel. Next fuel injectors were dismount and dismantled. Spare parts were verified and researched.

5

Modeling of Control Circuit of Aircraft fuel system

Breda R., Beno V.

Przegląd Elektrotechniczny

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2013

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R. 89, nr 4

172-175

EN

The proposal of fuel system for a particular airliner is a highly complex process, where all design requirements for the entire fuel system as well as individual components contained therein must be satisfied. And, it is also to show compliance with standards and regulations that determine the size parameters of the system. Nowadays at the design of these systems are increasingly being used tools of simulation software. With these tools it is possible to verify the properties a highly-complex nonlinear systems such as that aircraft fuel system.

PL

W artykule przedstawiono projekt system paliwowego dla samolotu pasażerskiego, w którego modelowaniu wykorzystano oprogramowanie Matlab-Simulink. Założenia teoretyczne i badania symulacyjne obejmował wszelkie przepisy dotyczące jakości i wymiarów poszczególnych elementów, jak i całego systemu.

6

Diagnostyka wysokociśnieniowej pompy paliwa w silnikach FSI

Lotko W., Lechowski M.

TTS Technika Transportu Szynowego

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2012

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R. 19, nr 9

315--322, CD

PL

W artykule przedstawiono metodę diagnozowania wysokociśnieniowej pompy paliwa w silnikach FSI z bezpośrednim wtryskiem benzyny za pomocą interpretacji przebiegów ciśnienia w obwodzie niskociśnieniowym. Ta metoda umożliwia wykrywanie usterek mechanicznych wysokociśnieniowej pompy paliwa oraz usterek elektrycznych zaworu regulacji ciśnienia paliwa bez konieczności wykonywania demontażu tych podzespołów. Dodatkowo został przedstawiony sposób regulacji układu wysokiego ciśnienia paliwa z uwzględnieniem jego pracy w trybie awaryjnym.

EN

This paper presents a method of diagnosing high pressure fuel pump In FSI engines with direct injection by interpreting trends of pressure in the low-pressure circuit. This method enables detection of mechanical failures of high pressure fuel pump and electrical faults of fuel pressure regulator valve without dismantling these components. Additionally this paper contains a description of a regulation method of high-pressure fuel system including its operation in limp-in mode.

7

Silnik magnetoelektryczny do pompy paliwa rakietowego kriogenicznego systemu napędowego o małej sile ciagu

Długiewicz L., Kołowrotkiewicz J., Szeląg W., Ślusarek B.

Maszyny Elektryczne : zeszyty problemowe

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2012

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Nr 2(95)

51-56

EN

The paper presents problems investigated by Mikroma in the project "In Space Propulsion", re-alized within 7' Framework Programme of the European Union. The investigation concerns elaboration of an electric motor to propulsion of a fuel pump in the new concept of cryogenic rocket propulsion with smali thrust force. The problems connected with elaboration of the motor suited to work in cryogenic conditions arę discussed. Chosen results of investigations of the influence of cryogenic temperaturę on the properties of motor manufacturing materials arę shown. Moreover, results of laboratory tests of built prototype motors arę presented.