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Wyszukujesz frazę "piston combustion engine" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
The analysis of energy and emission indicators of a piston engine supplied by a mixture of biogas
Autorzy:
Stępniak, D.
Surwiło, J.
Lampart, P.
Szymaniak, M.
Powiązania:
https://bibliotekanauki.pl/articles/175362.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
piston combustion engine
low caloric fuels
biogas
CO
CO₂
NOx emission
Opis:
The paper presents the methodology and results of research focused on experimental investigation of combustion of biogas fuels in a combustion piston engine. The study highlights the variability of exhaust gases parameters produced by the engine running in an idle mode and in a generation mode. The experimental analysis includes research about variability of temperature in the cylinders, depending on the composition of fuel used to supply the engine. The qualitative and quantitative analysis of exhaust gases extends on biogas substitutes with different proportions of CH₄ and CO₂. Characteristics of a piston combustion engine were created, including CO, CO₂, NOx emission indicators, for a range of engine load and fuel composition.
Źródło:
Transactions of the Institute of Fluid-Flow Machinery; 2016, 134; 109-120
0079-3205
Pojawia się w:
Transactions of the Institute of Fluid-Flow Machinery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Advantages of using composite alloys for internal combustion engine pistons
Autorzy:
Kowalski, Mirosław
Jankowski, Antoni
Powiązania:
https://bibliotekanauki.pl/articles/1833668.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
combustion engine piston
silumins
composite materials
tłoki silników spalinowych
siluminy
materiały kompozytowe
Opis:
Combustion engine pistons are subject to variable mechanical and thermal loads, and to variable deformations. The article presents the possibilities of using novel composite alloys for the construction of pistons for combustion engines. The novel alloys make it possible to meet high demands, especially for highly load designs, which practically cannot be met by conventional alloys used so far. These high requirements relate to the weight of the pistons, high temperature strength, alloy crystalline structure, abrasive wear resistance, dimensional stability. The requirements for pistons have an impact on the durability of the engine's operation, the level of noise emissions; exhaust gas blow-by into the crankcase, the level of emitted toxic exhaust components, mainly hydrocarbons. The research covered metallography (chemical composition, microstructure), material strength, abrasive wear, and thermal expansion. Investigations of the alloy crystallization process during casting were carried out using the Differential Thermal Analysis (DTA) method. The castings were used for metallographic tests. The strength of the samples was tested at room temperature (20°C) and elevated temperature (up to 350°C) on a testing machine equipped with a special climatic chamber. In particular, the article presents Thermal Derivative Analysis curves and representative microstructures of conventional AlSi12 alloy and the novel composite alloy; dependence of the tensile strength versus temperature for the samples of the novel alloy with various nickel content 2% and 4 %; comparison of the tensile strength for conventional alloy and the novel alloy at ambient and 250°C temperature; comparison of abrasive wear of samples, made of novel aluminium alloy and different cast iron; course of the linear expansion coefficient versus temperature for the conventional AlSi12 alloy with incorrect heat treatment; course of the linear expansion coefficient versus temperature for one of tested silumin alloy which expansion coefficient during sample cooling is smaller than during sample heating; course of the linear expansion coefficient versus temperature for the novel composite silumin alloy, after correct heat treatment. The great benefits of using this novel alloy and the introduction of novel alloying elements (in-Situ) have been confirmed in engine research.
Źródło:
Archives of Transport; 2020, 55, 3; 85-94
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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