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    Wyświetlanie 1-15 z 15
    Tytuł:
    Conditions in exhaust pipe in CI engine in light of monitoring of catalytycal converter
    Autorzy:
    Rychter, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/242319.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    catalytic converter
    emission
    monitor
    pressure
    sensor
    temperature
    Opis:
    The paper presents main method of monitoring catalytically comerter in CI engines. In this paper presents modified test bedwitch used to testes of exhaust pipe in light of determination possibility of application measurement probę to determine of NOx concentration. Those investigation could help to evaluate of possibility catalytically converter monitoring within the framework on board diagnostic systems The OBD system is an integral part of the vehicle connected with the engine control system, Nowadays the investigation on the on board diagnostic systems in their different applications are one of the basic problems that the OBD method is concerned with. The implementation of the investigation method for the OBD system efficiency is one of the main questions of the matter in hand. Diagram of modification exhaust pipe with installed catalytically converter in test bed and present of measurement points, distribution of temperature in measurement point TO-T8 exhaust pipe of testing engine without catalytically converter during realization ESC test, distribution of temperature in measurement point TO-T8 exhaust pipe of testing engine with 200 cpsi catalytically converter during realization ESC test, distribution of pressure in measurement point pO-p8 exhaust pipe oftesting engine without catalytically converter during realization ESC test, distribution of temperature in measurement point pO-p8 exhaust pipe of testing engine with 200 cpsi catalytically converter during realization ESC test are presented in the paper.
    Źródło:
    Journal of KONES; 2009, 16, 2; 401-406
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diagnosing catalytic converters based on gas temperature measurement
    Diagnozowanie reaktorów katalitycznych spalin w oparciu o pomiary temperatury spalin
    Autorzy:
    Łączyński, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/133505.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    catalytic converter
    monitoring
    diagnostic
    reaktor katalityczny
    diagnostyka
    Opis:
    The article presents methodology of experimental, simulated catalytic converter deactivation tests and measurements of the temperature changes of the exhaust gases flowing through a tested catalytic converter mounted in the exhaust system of the Rover 1.4 engine and operating in steady conditions. The energy balance of the catalytic converter has been presented, based on the equation which allows to calculate the exhaust gas temperature change in this converter, depending on the intensity of the chemical reactions occurring in it, and its technical condition. This in turn allowed to assess the effectiveness of the catalytic converter and to formulate diagnostic evaluation criteria for the trifunctional catalytic converter.
    W artykule przedstawiono metodykę eksperymentalnych, symulacyjnych badań dezaktywacji reaktora katalitycznego oraz pomiary zmiany temperatury spalin przepływających przez badany reaktor katalityczny zamontowany w układzie wylotowym silnika Rover 1,4 pracującego w warunkach ustalonych. Przedstawiono energetyczny bilans reaktora katalitycznego, w oparciu o równanie którego wyznaczono zależność pozwalającą na obliczenie zmiany temperatury spalin w tym reaktorze w zależności od intensywności reakcji chemicznych w nim zachodzących i jego stanu technicznego, co pozwoliło dokonać oceny skuteczności działania reaktora katalitycznego i sformułować kryteria oceny diagnostycznej trójfunkcyjnego reaktora katalitycznego spalin.
    Źródło:
    Combustion Engines; 2013, 52, 3; 745-751
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analyses of temperature and pressure condition in CI engines exhaust pipe in light of application NOx sensor to determine of catalytic converter efficiency
    Autorzy:
    Rychter, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/243619.pdf
    Data publikacji:
    2008
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    transport
    internal combustion engine
    catalytic converter
    diagnostic system
    Opis:
    The development of a catalytic converter required an analysis of selected physical parameters of the supports. This resulted from the necessity to assume given parameters of the supports applied in the tests in exhaust gas environment in the CI engines. An analysis of ionic conductors, which constitutes the basic solution in voltage sensors providing signals through NOx electrocatalysis, is presented. The aim of this paper is to determine the basis for the monitoring of catalytic converters in compression ignition engines by the emission level of a selected exhaust gas component as a diagnostic signal. The emission of NOx has been taken as the basis. This required the development of a specialized system allowing the reduction of NOx and obtaining of a diagnostic signal reflecting the level of the said reduction. This paper includes same results of testing and possibilities monitoring of prototype catalytic converter on the test bed. On the basis of the performed examinations and obtained test results the following conclusions can be drawn: the analysis of the NOx concentrations in exhaust gas from the compression-ignition engine can be based on the indications of the voltage probes with the modified electrodes of the oxygen pump, the application of the reduction conditions in the voltage probes using the nitrogen oxides reduction by the electro-catalytic way depends on the exhaust gas parameters, the values of which change depending on the rotational crankshaft speed and engine load, and for this reason obtaining the diagnostic signal for the whole engine operation range is impossible, the control of the correctness of the catalyst operation regarding the nitrogen oxides reduction can be realised for the defined operating parameters of the tested engine, for phases VIII and X of the ESC test the reheating the test probe installed before the catalyst was unnecessary, owing to the high exhaust gas temperature (737-759°C).
    Źródło:
    Journal of KONES; 2008, 15, 3; 451-463
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of operating conditions and emissions of the selected components of exhaust gas during SI engine braking phase
    Autorzy:
    Ubysz, A.
    Łazarz, B.
    Flekiewicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/245339.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    toxic emissions
    engine braking phase
    catalytic converter
    non-driving phases
    Opis:
    This paper presents analysis of conditions of CO2, CO, HC and NOX emissions during engine braking phase invehicles with 1.6 SI engine, based on the results of investigations by Professor Romaniszyn. The analysis aimed to determine the effect of cooling of catalytic converter and engine chamber on emissions of toxins and fuel efficiency in next driving phase. Based on own investigations, the synthesis of fuel consumption under three non-driving conditions of engine operation (i.e. continuous drive, engine braking and drive in neutral) is also presented. Current research centres often carry out extensive investigations of fuel efficiency and emissions of toxic compounds during real use of vehicles. Their results, due to previous assumptions or limitations in the scope of investigations, rarely provide an overall view of the problem. These attempts are typically made in scientific papers and dissertations [1-3]. Selective approach to the problem can be justified by the complexity and varied impact of each phase of engine 's operation on fuel consumption under unsteady heat conditions. Fuel consumption map in speed-acceleration coordinates for vehicle and engine, characteristics of CH emissions, parameters of engine braking phase and temperature characteristics of exhaust gases before catalytic converter are presented in the paper.
    Źródło:
    Journal of KONES; 2009, 16, 4; 469-476
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Inverse aspects of the three-way catalytic converter operation in the spark ignition engine
    Autorzy:
    Żmudka, Z.
    Postrzednik, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/242021.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    catalytic converter
    conversion rate
    flow resistance
    local resistance number
    friction number
    Opis:
    There are two sides of the catalyst operation: favourable and adverse. The positive side can be expressed by a conversion rate of harmful substances which is the principal parameter of catalyst work in respect of ecology. However, resistance of exhaust gas flow through the catalytic converter is also an essential problem. This is just the negative, adverse side of the converter operation. The catalytic converter can be treated as a local or linear resistance element of exhaust system. The first model, in which flow resistance generated by a catalyst is treated as local resistance, is more simplified. It is especially useful in case, when detailed constructional data of converter are unknown and the analysis of flow resistances in exhaust system is necessary. The basic measured quantity of flow resistance is pressure drop of exhaust gas within the catalyst. Next, on the basis of taken measurements also resistance number for the tested catalyst is calculated and analysed. Resistance number of the converter is calculated using Darcy model. In the second case, exhaust gas flow resistance through catalyst is treated as linear resistance with energy dissipation (linear frictional resistance) distributed linearly along way of exhaust gas flow. Friction number for the tested converter is calculated and analysed. The problem has been illustrated by the results of experimental researches of the three-way catalytic converter installed in the exhaust system of the spark ignition engine.
    Źródło:
    Journal of KONES; 2011, 18, 2; 509-516
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The analysis of heating process of catalytic converter using thermo-vision
    Analiza procesu nagrzewania reaktora katalitycznego przy użyciu termowizji
    Autorzy:
    Worsztynowicz, B.
    Uhryński, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/134003.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    internal combustion engine
    catalytic converter
    thermovision
    silnik spalinowy
    reaktor katalityczny
    termowizja
    Opis:
    The article tackles the issues related to a process of heating of three way catalytic converter during the cold start and the heating of the spark ignition engine. The measurements on the test bench were performed, taking into consideration how engine works directly after the start, on the idle speed and under the load, during which the temperature of the exhaust gases in the exhaust system and coolant on the cylinder head were measured. At the same time the track of the heat state of the catalytic converter was monitored using thermo-vision camera. The results of the measurements were presented as charts and selected thermo-grams, qualitatively representing the issue of heating of the catalytic converter.
    W artykule omówiono zagadnienia związane z procesem nagrzewania trójfunkcyjnego reaktora katalitycznego podczas zimnego rozruchu i nagrzewania silnika spalinowego ZI. Przeprowadzono pomiary na stanowisku hamowni, uwzględniając pracę silnika bezpośrednio po rozruchu, na biegu jałowym oraz obciążonego, w czasie których mierzono temperaturę spalin w układzie wylotowym i cieczy w głowicy silnika, równocześnie prowadząc zapis stanu cieplnego reaktora katalitycznego przy użyciu kamery termowizyjnej. Wyniki pomiarów przedstawiono w postaci wykresów oraz wybranych termogramów, obrazujących jakościowo zagadnienie nagrzewania się reaktora katalitycznego.
    Źródło:
    Combustion Engines; 2015, 54, 3; 41-51
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The analysis of thermal state of catalytic converter depending on fuel supply and engine load using thermo-vision
    Autorzy:
    Worsztynowicz, B.
    Uhryński, A.
    Borkowski, B.
    Pluta, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/132956.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    catalytic converter
    thermovision
    thermal state
    emissivity
    reaktor katalityczny
    termowizja
    stan termiczny
    emisyjność
    Opis:
    The paper discusses the problem of thermal state of three-way catalytic converter depending on engine load with spark ignition fueled with gasoline and natural gas. The measurements on the test bench were performed, during which the temperature of the exhaust gases in the exhaust system was measured with the help of thermocouples, and at the same time, the track of the thermal state of the catalytic converter was monitored using thermo-vision camera. The stable work of engine with different rotation speed and values of load was considered together with transient states. The results of the measurements were presented in forms of charts and selected thermograms, qualitatively presenting the issue of thermal state of the catalytic converter.
    Źródło:
    Combustion Engines; 2017, 56, 3; 30-36
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental analysis of flyash based, ion exchanged zeolite as catalyst for SI engine exhaust emission control
    Autorzy:
    Karthikeya, D.
    Saravanan, C. G.
    Powiązania:
    https://bibliotekanauki.pl/articles/247392.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    Synthesis of fly ash
    X-Zeolite
    catalytic converter
    emission control
    13 X Zeolite
    Opis:
    Lean Burn gasoline engines are receiving increasing application because of their potential of improved fuel economy. The conventional three-way converter used in gasoline engines controls effectively the levels of CO and HC, but it displays poor conversion in harmful NOx emission. This study has investigated the use of different materials with metal additives as support for effective NOx control in gasoline engines. In this work, flyash, which is relatively abundant and inexpensive, has been used as a replacement for expensive materials. Development of Catalysts from waste materials is an effective means to enhance the value of the waste. In the present work, X-Zeolite was synthesized from Coal Fly ash. 13-X zeolite was purchased from market. By the process of exchanging Na+ ions present in these zeolites with copper, Silver and Iron metal ions separately, six catalysts were prepared. Investigations were carried out on the 3 cylinder, 4-stroke, water cooled Maruthi Omni Gasoline Engine with a displacement volume of 796 cc and coupled with eddy current dynamometer. The packed catalyst bed was housed in a 100 mm diameter cylindrical pipe and is connected near to the exhaust manifold. AVL Di-gas analyser is used to measure the NOx, CO, HC, CO2, O2 emissions. Experiments were conducted at various loads from no load to maximum load without catalytic converter and then using the Ag-X, Ag-13X, Fe-X , Fe-13X, Ni -X and Ni -13X zeolite catalytic converters. The result reveals that in house made Ag-X , Fe-X and Ni -X Catalysts reduce emission at all levels of load conditions. Ag-X catalyst gives better conversion than Fe-X catalyst and Ni-X catalyst.
    Źródło:
    Journal of KONES; 2013, 20, 3; 229-235
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badania przyrostu temperatur spalin w trójfunkcyjnym reaktorze katalitycznym na potrzeby OBD II
    Research of the exhaust temperature increase in three - way catalytic converter for OBD II needs
    Autorzy:
    Ambrozik, A.
    Kruczyński, S.W.
    Łączyński, J.
    Tomaszewski, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/328137.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    toksyczność
    spaliny
    reaktor katalityczny
    diagnostyka pokładowa
    exhaust
    toxicity
    catalytic converter
    on-board diagnostics
    Opis:
    W pracy przedstawiono wstępne wyniki badań diagnozowania reaktora katalitycznego oparte o przyrost temperatury spalin. Podano warunki badań oraz zdefiniowano sygnał diagnostyczny. Przedstawiono zależności konwersji CO, HC i NOx od aktywności reaktora katalitycznego. Wykresami zilustrowano wyniki pomiarów sygnału diagnostycznego w zależności od aktywności reaktora katalitycznego oraz w zależności od konwersji CO, HC i NOx. Pracę zakończono analizą wyników badań.
    The aim of this paper is to present the results of the catalytic reactor diagnosis, basis on exhaust temperature increase in catalyst. In this paper research conditions are introduced and diagnostic signal is defined. The dependence of the conversion of exhaust components CO, HC, NOx, on the catalytic converter activity is presented. The results of diagnostic signal measurement in the function of catalytic converter activity and in the function of exhaust components CO, HC, NOx are illustrated. The paper is finished by analysis of the research results.
    Źródło:
    Diagnostyka; 2002, 27; 17-20
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Pomiary stężeń tlenu w diagnozowaniu pokładowym trójfunkcyjnego reaktora katalitycznego spalin
    Research of the oxygen content for on-board diagnosis of three way catalytic converter
    Autorzy:
    Ambrozik, A.
    Kruczyński, S.W.
    Tomaszewski, D.
    Łączyński, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/328141.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    toksyczność
    spaliny
    reaktor katalityczny
    diagnostyka pokładowa
    exhaust
    toxicity
    catalytic converter
    on-board diagnostics
    Opis:
    W pracy oceniono możliwości diagnozowania trójfunkcyjnych reaktorów katalitycznych za pomocą sygnałów z czujników tlenu w ustalonych warunkach pracy silnika. Zaproponowano metodę symulacji procesu dezaktywacji polegającą na wymianie wkładów aktywnych reaktora na wkłady nieaktywne. Do potrzeb diagnostyki trójfunkcyjnego reaktora katalitycznego wybrano symptom diagnostyczny spowodowany zmianą stężenia tlenu i zjawiskiem spadku powierzchni jego magazynowania. Na podstawie uzyskanych wyników określono przydatność sygnałów wykorzystywanych do diagnozy reaktora katalitycznego ze względu na emisję składników toksycznych spalin.
    In this paper the possibility of three - way catalytic converter diagnosis by means of oxygen sensors signals in fixed engine working conditions is estimated. Method of the deactivation process depending on the exchange reactor active bricks of converter on disactive ones is suggested. For needs of three - way catalytic converter diagnosis it choosed diagnostic symptom caused by oxygen loss and decrease of Oxygen Storage Capacity (OSC). On the basis of the forthcoming results, diagnostic signals usefulness for converter diagnosis in view of harmful gases emission is evaluated.
    Źródło:
    Diagnostyka; 2002, 27; 21-25
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Catalytic reactor as a resistance element of ICE exhaust system
    Autorzy:
    Postrzednik, S.
    Żmudka, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/242786.pdf
    Data publikacji:
    2007
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    internal combustion engine
    catalytic converter
    pressure drop
    local and linear flow resistance
    resistance number
    Opis:
    Selected problems connected with operation of catalytic reactors are presented. Conversion rate of harmful substances is the principal parameter of catalyst work in respect of ecology. However, resistance of exhaust gas flow through the catalytic converter is also essential problem, apart from its chemical efficiency because fitting the catalyst in exhaust system alters flow characteristic of this system significantly. Catalytic converter can be treated as local or linear resistance element of exhaust system. The first model, in which flow resistance generated by a catalyst is treated as local resistance, is more simplified. Resistance number of the converter was calculated using Darcy model. In the second case, exhaust gas flow resistance through catalyst is treated as linear resistance with energy dissipation (linear frictional resistance) distributed linearly along way of exhaust gas flow. Friction number for the tested converter was calculated and analysed. The problem has been illustrated by results of experimental researches of three-way catalytic converter installed in exhaust system of spark ignition engine and its basic analysis.
    Źródło:
    Journal of KONES; 2007, 14, 4; 351-356
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelling study of flue gas flow pattern with pressure, amount and shape variation catalytic converter
    Autorzy:
    Ghofur, A.
    Isworo, H.
    Subagyo, R.
    Tamjidillah, M.
    Siswanto, R.
    Ma’ruf, -
    Purwanto, H.
    Muchsin, -
    Powiązania:
    https://bibliotekanauki.pl/articles/1818507.pdf
    Data publikacji:
    2020
    Wydawca:
    Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
    Tematy:
    shape effect
    absorption effectiveness
    ANSYS
    catalytic converter
    filter-not- cut
    filter-cut
    efekt kształtu
    skuteczność wchłaniania
    katalizator
    Opis:
    Purpose: The purpose of this study is to analyse the modelling of exhaust gas flow patterns with variations in pressure, number, and shape of filters on the catalytic converter. Design/methodology/approach: The research method used is a simulation using ANSYS, which starts by creating a converter catalytic model with pressure variations: (0.5-1.5 atm), number of filters: (2-5), and the form of filter-cut/filter-not-cut. Findings: The decrease in velocity is caused by non-uniform velocity in the exhaust gas flow that occurs when passing through a bend in the filter-cut that serves as a directional flow to create turbulence. Filter-cut type tends to have fluctuating pressure, turbulence flow pattern shape so that contact between filter and exhaust gas is more effective. Based on the analysis of flow patterns, the speed and pressure of the 5 filter-not-cut design at a pressure of 0.5 are the best, while at pressure (1-1.5 atm) the type 5 filter-cut is the best. Research limitations/implications: This study is limited to filter-not-cut and filter-cut types with variations in the number of filters: 2, 3, 4, and 5, and the inlet pressure between 0.5-1 atm. Practical implications: The practical implications of this study are to find a catalytic converter design that has advantages in the effectiveness of exhaust gas absorption. Originality/value: The results show that the filter-not-cut and filter-cut types have the best effectiveness in the number of 5 filters. Filter-not-cut at the pressure of 0.5 atm and filter-cut at pressure (1-1.5 atm).
    Źródło:
    Archives of Materials Science and Engineering; 2020, 103, 1; 5--17
    1897-2764
    Pojawia się w:
    Archives of Materials Science and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of selected elements in catalytic converters using ICP-MS and microwave digestion
    Autorzy:
    Kieres, Weronika
    Palka, Grzegorz
    Łuczak-Zelek, Karolina
    Partyka, Monika
    Powiązania:
    https://bibliotekanauki.pl/articles/1429828.pdf
    Data publikacji:
    2021
    Wydawca:
    Centrum Badań i Innowacji Pro-Akademia
    Tematy:
    ICP-MS
    car catalyst
    catalytic converter
    microwave digestion
    circular economy
    katalizator samochodowy
    katalizator
    gospodarka o obiegu zamkniętym
    Opis:
    Fuels combustion, polluting the atmosphere is a side effect of an engines’ work. Increasing ecological awareness has led to constant pursuit of disposing harmful substances properly. Catalytic converters (car catalysts), containing precious metals from the platinum group, including palladium, platinum and rhodium, have been commonly adopted for this purpose. These critical elements can be found in many raw materials used frequently throughout the economy. Therefore, it is economically viable to retrieve these elements from, among the others, spent catalysts, so they can be reused to manufacture new converters. In order to determine a possible cost of spent car catalyst, it is essential to use the analytical techniques to determine elemental content in any given sample. X-ray fluorescence spectroscopy (XRF) is an example of such a technique. It is nevertheless advisable to use a complementary procedure to confirm any results obtained. A cross-verification technique was developed using inductively coupled plasma mass spectrometry (ICP-MS). This procedure was verified using comparative studies, which confirmed its usefulness and correctness.
    Źródło:
    Acta Innovations; 2021, 38; 5-11
    2300-5599
    Pojawia się w:
    Acta Innovations
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis and activity evaluation of Ce-Mn-Cu mixed oxide catalyst for selective oxidation of co in automobile engine exhaust: effect of Ce/Mn loading content on catalytic activity
    Autorzy:
    Bilal, Yasir
    Nasir, Muhammad Ali
    Nasreen, Sadia
    Akhter, Niaz Ahmed
    Pasha, Riffat Asim
    Noor, Muhammad Farhan
    Powiązania:
    https://bibliotekanauki.pl/articles/101992.pdf
    Data publikacji:
    2018
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    base metal oxide catalyst
    catalytic converter
    CO sensor
    CO-precipitation
    catalytic activity
    katalizator tlenku metalu zasadowego
    katalizator
    czujnik CO
    strącanie CO
    aktywność katalityczna
    Opis:
    A series of Mn-doped CeO2-CuO catalyst (CeO2-MnOx-CuO) (Ce/Mn molar ratio of 0.5, 1.0 2.0 and 3.0) were prepared using co-precipitation method for the selective oxidation of CO in automobile engine exhaust. The content of copper was 5.0 wt. % in each sample. Catalysts were installed on the automobile engine exhaust and CO amount was recorded with help of CO sensor, with and without the catalyst. The catalytic converter efficiency was estimated for each catalyst through efficiency formula. It was observed that Ce/Mn catalyst with a molar ratio of 2.0 shows the maximum efficiency (88.35%). Stability of conversion process was analyzed by plotting the CO amount with respect to time. The catalyst with Ce/Mn molar ratio of 2.0 performed the most streamline conversion process with least deviations.
    Źródło:
    Advances in Science and Technology. Research Journal; 2018, 12, 1; 260-266
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The role and tasks of the support mats in construction of catalytic converters
    Autorzy:
    Kozioł-Jarosz, M.
    Brzeżański, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/134118.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    support mat
    exhaust system
    catalytic converter
    amorphous fibre
    polycrystalline fibre
    układ odprowadzania spalin
    reaktor katalityczny
    włókno bezpostaciowe
    włókno polikrystaliczne
    Opis:
    The purpose of support mats used in catalytic converters as connecting element between the ceramic core and the metallic converter housing has been presented in article. The functional requirements and operating conditions have been discussed as well as support mat types and manufacturing methods. The support mat choice and basic design features have been also presented.
    Źródło:
    Combustion Engines; 2017, 56, 3; 96-99
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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