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    Wyświetlanie 1-8 z 8
    Tytuł:
    Experimental Research on the Influence of the Composition of the Fuel Mixture on the Operating Parameters of a Single-Cylinder Common Rail Diesel Engine
    Autorzy:
    Tucki, Karol
    Mruk, Remigiusz
    Powiązania:
    https://bibliotekanauki.pl/articles/2205041.pdf
    Data publikacji:
    2022
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    vehicle
    biofuel
    fuel
    common rail
    Opis:
    The article presents the laboratory tests results of the influence of the diesel oil content in a mixture with rapeseed oil on the operating parameters of a diesel engine with the CommonRail fuel supply system. Fuel mixtures with a rapeseed content of 0%, 50%, 70%, 100% were used. The article presents the results of tests carried out for various configurations of the object. The measurements included tests of exhaust gases: the content of carbon monoxide, carbon dioxide, hydrocarbons, nitrogen oxides as well as specific fuel consumption and exhaust gas temperature. As a result of the research, it was noticed that the use of rapeseed oil causes a significant increase in fuel consumption and an increase in emissions. At a crankshaft speed of 2500 rpm and a torque generated by the engine crankshaft of 12 Nm, the specific fuel consumption for a 0% rapeseed content is 310 g/kWh. For the same engine operating conditions and the same rapeseed content of the fuel, the fuel consumption for 100% rapeseed content is 330 g/kWh. For the same engine operating parameters, analysis of the carbon dioxide content in the exhaust gas yields a value of 7.8x104 ppm for a rapeseed content of 0%. For the same engine operating conditions and for the oilseed rape content in the fuel is 100% 8.4x104 ppm. The mathematical models describing the effects of engine operating parameters and rapeseed oil content in the mixture on the observed values were created with the Scilab program. The degree of agreement of the determined mathematical models was checked by calculating the coefficient of determination (R2). The results are shown in 3D figures.
    Źródło:
    Advances in Science and Technology. Research Journal; 2022, 16, 5; 100--109
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Environmental Aspects of a Common Rail Diesel Engine Fuelled with Biodiesel/Diesel Blends
    Autorzy:
    Lotko, Wincenty
    Smigins, Ruslans
    Tziourtzioumis, Dimitrios
    Górska, Milena
    Powiązania:
    https://bibliotekanauki.pl/articles/2204864.pdf
    Data publikacji:
    2022
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    common rail
    emissions
    diesel
    fuel injection
    combustion
    Opis:
    The purpose of the study was the research concerning the emissions of limited exhaust gas components of the AVL research engine equipped with Common Rail injection system, fuelled with different biodiesel blends and diesel fuel as reference. In details, the engine was powered with mixtures of rapeseed methyl esters (RME) with DF in the volumetric ratios of 10:90, 20:80, 30:70, 40:60 and 50:50. The tests were performed at: 1200, 1700 and 2200 rpm and the torque T = 5…35 Nm (step 5 Nm). The analysis of the obtained results showed that the emissions of hydrocarbons (HC) from the tested engine fuelled with biodiesel are lower than that of diesel fuel. Carbon monoxide (CO) emissions are also lower, except for low rotational speeds and low engine load T = 5…20 Nm. As for nitrogen oxides (NOx) emissions, it is also lower than that for the diesel fuel, except for high engine loads, in the range above 25 Nm, for each rotation speed of the engine load characteristics. Moreover, in this research it was confirmed that emission of particulate matter (PM) is also slightly reduced for the engine fuelled with tested blends.
    Źródło:
    Advances in Science and Technology. Research Journal; 2022, 16, 5; 192--201
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Damages to injectors in diesel engines
    Autorzy:
    Ignaciuk, P.
    Gil, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/102111.pdf
    Data publikacji:
    2014
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    tribological damage
    fuel injectors
    common rail
    compression ignition engine
    Opis:
    The article describes damages to high pressure injectors used in common rail injection systems. The conducted analysis of their causes includes the diagnosis of injectors on a test bench and the results of microscopic research of damaged components. The tribological damages of high pressure injectors are local and cavitations pitting. The place of cavitations pitting are mainly check valves, where the reduction in the quan¬tity of injected fuel is forming.
    Źródło:
    Advances in Science and Technology. Research Journal; 2014, 8, 21; 58-61
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of the possibility of applying ceramic materials in common rail injection systems
    Autorzy:
    Bor, Mateusz
    Borowczyk, Tomasz
    Karpiuk, Wojciech
    Krakowiak, Mikołaj
    Smolec, Rafał
    Powiązania:
    https://bibliotekanauki.pl/articles/102945.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    ceramic materials
    common rail
    injection systems
    materiały ceramiczne
    systemy wtryskowe
    szyny
    Opis:
    Ceramic materials are currently interesting as substitutes for the metals traditionally used for engineering applications. This paper focuses on a comparison of ceramic materials: corundum (alumina, Al2O3) and silicon carbide (solid-state sintered) – SSiC with bearing alloy steel 100Cr6, i.e. the material used to make pistons and cylinders of pumps in common rail injection systems. The article is divided into two parts. In the first part, the aforementioned materials are characterized and their properties compared from the perspective of their application in piston-cylinder assemblies of injection pumps. The second part concerns analysis conduct by means of the finite element method and a specialized simulation environment, based on comparing ceramic materials and bearing steel. This comparison was conducted by using a CAD strength model of a piston in a specific application, being a pump with CP3 design. Simulation results confirmed the beneficial qualities of ceramic materials – the level of material deformation is lower for ceramics in comparison to steel.
    Źródło:
    Advances in Science and Technology. Research Journal; 2018, 12, 1; 312-321
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelling of Dynamic Interactions in the Fuel Rail for the Aircraft Diesel Engine
    Autorzy:
    Sochaczewski, Rafał
    Magryta, Paweł
    Powiązania:
    https://bibliotekanauki.pl/articles/103039.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    diesel engine
    two-stroke
    common rail
    modeling
    silnik wysokoprężny
    dwusuwowy
    modelowanie
    Opis:
    The paper reports a computer model for simulating dynamic responses in fuel rail of aircraft diesel engine. The fuel system was designed for use in a two-stroke compression-ignition engine with opposite pistons. The methodology of building a fuel system model in the AVL Hydsim program and the results of simulation studies were presented. Determination of dynamic phenomena in the fuel rail required the construction of a model of the entire supply system. It is a common rail system with a three-section positive displacement pump and electromagnetic fuel injectors. The system is also equipped with a PID regulator to maintain the present pressure in the fuel rail. For the purposes of the research, two structures of the fuel rail were developed. They differ in dimensions, spacing of the outlet ports and location of the high-pressure connection. The research allowed determining the interactions between the geometry of the fuel rail and the supply method with the fuel pressure and injector mass flow rate. This will optimise the design of the fuel rail for the three-cylinder engine power supply system.
    Źródło:
    Advances in Science and Technology. Research Journal; 2020, 14, 4; 168-176
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modeling of selected design characteristics of cam and hypocycloidal drives of high-pressure fuel pumps
    Autorzy:
    Bor, Mateusz
    Borowczyk, Tomasz
    Karpiuk, Wojciech
    Smolec, Rafał
    Powiązania:
    https://bibliotekanauki.pl/articles/102486.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    common rail
    hypocycloidal drives
    high-pressure fuel pump
    napędy hipocykloidalne
    wysokociśnieniowa pompa paliwa
    Opis:
    The advancement of diesel fuel injection systems is forced by the increasingly stringent exhaust emissions limits. Modern injection systems must generate fuel pressure in excess of 200 MPa, which very often leads to premature wear of the mating components. Generating high pressures results in much force load acting on the pumps. In the case of frequently applied cam-driven pumps, high loads result in significant forces caused by friction. The friction force loads the piston perpendicularly to its axis, which rules out the application of super hard but fragile materials such as ceramics. One of the possible solutions of this problem is the application of unconventional drive systems, the example of which is the hypocycloidal drive. The paper presents the results of simulations comparing selected parameters of the piston motion of the cam-driven pumps and the pumps fitted with hypocycloidal drive. The use of the CAD software also enabled identification of the force acting on the piston (force perpendicular to the piston axis) in the cam-driven pump and its lack in the pump fitted with hypocycloidal drive.
    Źródło:
    Advances in Science and Technology. Research Journal; 2018, 12, 2; 128-136
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Impact of Rapeseed Oil Methyl Esters on Fuel Injection Parameters in a Diesel Engine Equipped with the Common Rail Injection System
    Autorzy:
    Lotko, Wincenty
    Powiązania:
    https://bibliotekanauki.pl/articles/2123285.pdf
    Data publikacji:
    2021
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    self-ignition engines
    vegetable fuels
    rapeseed oil methyl esters
    Common Rail injection system
    fuel stream
    Opis:
    In the global fuel economy, new challenges concerning the use of alternative (vegetable) fuels in the internal combustion engines are starting to arise. The important issue is to meet the new limits on four main pollutant emissions from a diesel engines: CO (carbon monoxide), NOx (nitrogen oxides), HC (hydrocarbons) and PM (particulate matter). The design of a modern engine must be characterized by high efficiency, its dynamics of movement and durability. Dynamic development of plant fuels is forced by the new strategy of the global fight against the global warming. For these reasons, it is necessary to do research concerning the effects of the use of biofuels, including methyl esters, higher fatty acids of rapeseed oil for self- ignition engines. The current tests must concern the engines equipped with the latest Common Rail fuel injection systems. In the publication, the above-mentioned issues have been analyzed, and the results of tests of the basic injection process parameters have been presented. The AVL5402 engine was fueled with mixtures of diesel oil with RME ester of rapeseed oil produced by ORLEN Południe S.A. in Trzebinia. The impact of the fuel (v/v) RME content in the mixture with diesel oil on the injection process parameters such as: initial velocity of the injected fuel, critical speed of secondary fuel breakup, critical droplet diameter, microstructure of the fuel stream, droplet Sauter mean diameter, vertical angle of the fuel stream, have been justified. The impact of the fuel (v/v) RME content in the mixture with diesel oil on the above-mentioned parameters has been proved. During the tests, the engine worked on the load characteristics.
    Źródło:
    Advances in Science and Technology. Research Journal; 2021, 15, 3; 76--87
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Unrepeatability of the Fuel Injection and Combustion Processes in the Diesel Engine Fuelled with Renewable Fuel
    Autorzy:
    Lotko, Wincenty
    Powiązania:
    https://bibliotekanauki.pl/articles/102694.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    diesel engine
    common rail
    fuel injection
    unrepeatability
    alternative fuels
    silnik wysokoprężny
    wtrysk paliwa
    niepowtarzalność
    paliwa alternatywne
    Opis:
    Despite the fact that more than a hundred years have passed since the first design of the compression ignition (CI) engine appeared, its optimal design has not yet been achieved. It is still the subject of constant modernisation in order to meet the new expectations of users in terms of its dynamics, economy, and, in recent months, also ecology. The most effective fulfillment of these requirements is achieved through new solutions of the fuel supply system and electronic control of injection and combustion processes. The publication includes the test results obtained on the basis of two engines. One of them is the single-cylinder CI engine AVL5402, and the other one – a threecylinder CI engine AD3.152. The first one is equipped with the Common Rail fuel supply system, electronically controlled with the selenoid injector. The second engine has a CAV distributor fuel injection pump and traditional, mechanical controlled injectors. The paper demonstrates how these two different structural systems for supplying and controlling engine parameters affect the selected indicators of the injection and combustion process. The influence of diesel fuel (DF) and rapeseed oil (RO) feeding the engine in both different injection and control systems on the unrepeatibility of the injection pressure on the maximum combustion pressures in the engine cylinder and, consequently, non-uniformity of the crankshaft rotational movement of the engine were also pointed out. The continuation of the research in this area seems to be expedient. They can be supplemented with statistical models of these phenomena. The results obtained in this way could be helpful in optimising the design of power supply systems and engine combustion chambers.
    Źródło:
    Advances in Science and Technology. Research Journal; 2020, 14, 4; 68-77
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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