Bibliografie tematiche / Automobiles Catalytic converters

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Letteratura scientifica selezionata sul tema "Automobiles Catalytic converters"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 1 febbraio 2022

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Articoli di riviste sul tema "Automobiles Catalytic converters"

Helmers, Eckard. "Platinum emission rate of automobiles with catalytic converters." Environmental Science and Pollution Research 4, no. 2 (June 1997): 99–103. http://dx.doi.org/10.1007/bf02986288.

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Liu, Ping, and Jan Andersson. "Oxidation Mechanism of Ferritic Stainless Steel Used for Catalytic Converters in Automotive Exhaust Systems Studied by TEM." Microscopy and Microanalysis 3, S2 (August 1997): 775–76. http://dx.doi.org/10.1017/s143192760001076x.

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Emission of pollutants from automobiles is regarded as one of the major causes of air pollution in many cities around the world. However, the pollutants could be almost eliminated by using catalytic purification of exhaust gas, thus making a better environment. The metallic material for catalytic converters made of ferritic stainless steel, Sandvik 0C404 (20.0 Cr-5.0 Al-Fe balance in wt % plus the addition of rare earth elements), offers a number of advantages over a ceramic one: better thermal conductivity, higher mechanical strength and toughness, thinner walls, larger effective area, greate

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Ilie, Sorin, Adrian Miuţescu, Mircea Stoianovici, and Gabriela Mitran. "Recovery of Precious Metals from Catalytic Converters of Automobiles by Hydrometallurgical Solid-Liquid Extraction Processes." Advanced Materials Research 837 (November 2013): 105–9. http://dx.doi.org/10.4028/www.scientific.net/amr.837.105.

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Today, among the basic requirements to be fulfilled by an automobile, those relating to environmental protection and recyclability are of great importance. This paper aims to present a new technological solution to recover rare metals - Platinum, Palladium and Rhodium - from automotive used catalysts, based on hydrometallurgical method of solid-liquid extraction. Following the theoretical and experimental researches, were established the technological sequences which must be carried for recovering precious metals from used automotive catalysts, in the pilot phase. The proposed technology has b

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Generowicz, Natalia, Joanna Kulczycka, Monika Partyka, and Kamil Saługa. "Key Challenges and Opportunities for an Effective Supply Chain System in the Catalyst Recycling Market–A Case Study of Poland." Resources 10, no. 2 (February 9, 2021): 13. http://dx.doi.org/10.3390/resources10020013.

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Increasing public awareness about low emission and stricter standards has a significant impact on the industry. The use of catalytic converters provides one of the solutions to the problem of lowering the amount of exhaust fumes. As most catalytic converters contain a combination of the three metals Pt, Pd and Rh, the manufacture of catalysts for automobiles is the largest sector of demand for and consumption of PGMs (platinum group metals). In Poland, the recycling system for catalysts is still in the development stage, but there is a significant trend of increase mainly due to EU policy on t

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Chang, Yu-Hsien, and Cheng-hong Hong. "Some Applications of -Semigroups." Journal of Applied Mathematics 2012 (2012): 1–14. http://dx.doi.org/10.1155/2012/968760.

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This study is originally motivated by the thermal balance equations for the gas and solid interphase heat-transfer for the fast-igniting catalytic converter of automobiles. Instead of solving this problem directly, we proved some results concerning the existence and uniqueness for abstract semilinear initial value problem by means of -semigroup theories on locally convex topological space. The most enjoyable here is that these results not only can be applied to solve the interphase heat-transfer for the fast-igniting catalytic converter of automobile under the situation of preheating at the en

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Karthikeyan, A. "Emission Control in Two Wheelers Using Magnesium Nanoparticle as a Catalyst." Applied Mechanics and Materials 766-767 (June 2015): 343–47. http://dx.doi.org/10.4028/www.scientific.net/amm.766-767.343.

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Automobile emission is considered as the major source of pollution. Two wheelers are the main contributors in that due to its large number. For controlling the pollution the available methods of are pre-pollution control and post pollution control. This work is based on the post pollution control method in two-wheeler automobiles using magnesium as a catalyst. To achieve this objective, an innovative design of catalytic converter for two-wheeler automobiles is proposed using magnesium nanoparticle as a catalyst. This proposed method aims in the prevention of environmental pollution contributed

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Hirata, K., R. Oda, S. Tanaka, H. Tanigawa, and J. Funaki. "Pressure-loss reduction and velocity-profile improvement in a catalytic converter by a flow deflector." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 222, no. 3 (March 1, 2008): 455–67. http://dx.doi.org/10.1243/09544070jauto682.

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In automobile exhaust systems, catalytic converters have become essential in reducing environmental pollution. However, the main components of catalytic converters produce large pressure drops in exhaust systems, which decrease engine power and increase fuel consumption. In addition to the need to reduce pressure loss, the flow passing through the catalytic substrate strate should be as uniform as possible, which provides a uniform thermal distribution and high catalytic conversion efficiency. The goal of the present study is simultaneously to reduce the pressure loss and to improve the flow d

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Malm, Jan-Olle, and Jan-Olov Bovin. "High Resolution Transmission Electron Microscopy of an automobile catalytic converter." Proceedings, annual meeting, Electron Microscopy Society of America 48, no. 4 (August 1990): 242–43. http://dx.doi.org/10.1017/s0424820100174345.

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Understanding of catalytic processes requires detailed knowledge of the catalyst. As heterogeneous catalysis is a surface phenomena the understanding of the atomic surface structure of both the active material and the support material is of utmost importance. This work is a high resolution electron microscopy (HREM) study of different phases found in a used automobile catalytic converter.The high resolution micrographs were obtained with a JEM-4000EX working with a structural resolution better than 0.17 nm and equipped with a Gatan 622 TV-camera with an image intensifier. Some work (e.g. EDS-a

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Syed Bahari, Syed Najib, and Wan Ahmad Wan Yusoff. "Quality Improvement in Three-Way Catalytic Converter (TWC) System Using Failure Mode and Effect Analysis (FMEA) Methodology." Applied Mechanics and Materials 165 (April 2012): 290–94. http://dx.doi.org/10.4028/www.scientific.net/amm.165.290.

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This paper intends to present the application of FMEA method on Three-Way Catalytic Converter (TWC) system. Catalytic converter of auto-exhaust emission is one of the most successful applications of heterogeneous catalysis, both in commercial and environmental point of view. FMEA method will be applied to this system to quantitatively determine and evaluate its risk factors. This method is being employed effectively for identifying and addressing what potentially could go wrong with a product or process. It is expected to enhance the lifetime of the TWC by improving its resistance to deactivat

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Baba, Naoki, Katsuyuki Ohsawa, Kiyomi Iida, and Shinobu Ishida. "Analysis of Transient Thermal Characteristics of Automobile Catalytic Converters." Transactions of the Japan Society of Mechanical Engineers Series B 61, no. 590 (1995): 3622–28. http://dx.doi.org/10.1299/kikaib.61.3622.

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Tesi sul tema "Automobiles Catalytic converters"

Clarkson, Rory John. "A theoretical and experimental study of automotive catalytic converters." Thesis, Coventry University, 1995. http://curve.coventry.ac.uk/open/items/cb5d72be-4f37-c710-5e08-df9c44201b6f/1.

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In response to the increasingly widespread use of catalytic converters for meeting automotive exhaust emission regulations considerable attention is currently being directed towards improving their performance. Experimental analysis is costly and time consuming. A desirable alternative is computational modelling. This thesis describes the development of a fully integrated computational model for simulating monolith type automotive catalytic converters. Two commercial CFD codes, PHOENICS and STAR-CD, were utilised to implement established techniques for modelling the flow field in catalyst asse

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Quadri, Syed Saleem. "The effect of oblique entry into an automotive catalyst on the flow distribution within the monolith." Thesis, Coventry University, 2008. http://curve.coventry.ac.uk/open/items/bccfd1aa-e70b-7608-3d41-121b43630c1d/1.

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Automotive catalytic converters are increasingly used to reduce emissions from internal combustion engines to comply with emission regulations. Maldistributed flow across the catalyst affects its warm up, light off time, ageing, and conversion efficiency. This thesis concerns flow distribution in automotive catalytic converters and methods to improve CFD predictions. Previous studies showed that modelling the monolith flow resistance using the Hagen- Poiseuille’s formulation under predicted flow maldistribution. The predictions were improved by incorporating an additional pressure loss term V2

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Manlee, Tamaryn. "The identification of factors that contribute to the competitive advantage of the catalytic converter industry cluster in the Eastern Cape." Thesis, Port Elizabeth Technikon, 2002. http://hdl.handle.net/10948/99.

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The research problem addressed in this study was to determine what the main factors are that contribute to the competitive advantage of the catalytic converter industry cluster in the Eastern Cape. To achieve this objective theoretical models of competitive advantage and literature of industry clustering were identified. For the models on competitive advantage, Porter’s diamond was used for national competitive advantage and Porter’s model on the competitive environment, which affects the competitive advantage of a region. Other theories on competitive advantage of cities and regions were iden

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Haimad, N. "A theoretical and experimental investigation of the flow performance of automotive catalytic converters." Thesis, Coventry University, 1997. http://curve.coventry.ac.uk/open/items/3f51aa95-571c-73d5-bee3-4b523cab0a1c/1.

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Considerable research is being carried out into the parameters that affect catalyst performance in order to meet the latest emission regulations. The conversion efficiency and the durability of automotive catalytic converters are significantly dependent on catalyst flow performance. Related investigations are commonly conducted using CFD techniques which represent an inexpensive and fast alternative to experimental methods. This thesis focuses on the flow performance of automotive catalytic converters using both experimental and computational techniques. The work describes the effects of inlet

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Kuczka, Allan Anthony. "Conceptual design analysis of a collection and processing system for scrapped catalytic converters." Master's thesis, This resource online, 1991. http://scholar.lib.vt.edu/theses/available/etd-01202010-020249/.

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Yamin, A. K. M. "Pulsating flow studies in a planar wide-angled diffuser upstream of automotive catalyst monoliths." Thesis, Coventry University, 2012. http://curve.coventry.ac.uk/open/items/e82aae35-8737-48e2-b73d-4758a88f5e1a/1.

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Automotive catalytic converters are used extensively in the automotive industry to reduce toxic pollutants from vehicle exhausts. The flow across automotive exhaust catalysts is distributed by a sudden expansion and has a significant effect on their conversion efficiency. The exhaust gas is pulsating and flow distribution is a function of engine operating condition, namely speed (frequency), load (flow rate) and pressure loss across the monolith. The aims of this study are to provide insight into the development of the pulsating flow field within the diffuser under isothermal conditions and to

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Crawford, Ian Stewart. "Catalytic reduction of nitric oxide by carbon monoxide or hydrogen over a Monel metal catalyst." Title page, contents and summary only, 1987. http://web4.library.adelaide.edu.au/theses/09EN/09enc899.pdf.

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Heather, Keith Buxmann. "The determination of a strategy for the implementation of learnerships in the catalytic converter canning industry in the Eastern Cape." Thesis, Port Elizabeth Technikon, 2002. http://hdl.handle.net/10948/117.

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The Eastern Cape Region, once had sufficient job seekers with automotive component manufacturing skills and experience. Indications are that this pool has been desiccated. The draining of skills out of the area is starting to affect growth potential and competitiveness in the industry in the area. In 1998, the Skills Development Act was passed to implement the National Skills Development Plan, and to encourage employers to train personnel. The strategy promotes a three faceted approach to encourage the development of skills; Workplace Skills Development Plans, Learnerships and Sector Specific

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Ludik, Henk. "An investigation into the impact of the substitution of platinum in auto catalysts on the South African economy." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/989.

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Thesis (MBA (Business Management))--University of Stellenbosch, 2010. ENGLISH ABSTRACT: South Africa has historically benefited from its mineral wealth, building one of the leading mining industries in the world. South Africa holds the worlds largest known PGM (or precious group metals) resource base (in a geological formation known as the Bushveld Igneous Complex), with an estimated life of 230 years (at current mining rates). This precious commodity is a precious source of both the direct as well as indirect contributions into the South African economy, as well as a leading source of

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MORCELLI, CLAUDIA P. R. "Elementos do grupo da platina (Pt, Pd e Rh) emitidos por conversores cataliticos de automoveis: um estudo realizado em solos localizados as margens da Rodovia dos Bandeirantes no Estado de Sao Paulo." reponame:Repositório Institucional do IPEN, 2004. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11222.

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Made available in DSpace on 2014-10-09T12:49:39Z (GMT). No. of bitstreams: 0 Made available in DSpace on 2014-10-09T14:03:11Z (GMT). No. of bitstreams: 1 09987.pdf: 6803672 bytes, checksum: c070bf0956c20ddeb4d6cb89d8d1535c (MD5) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Tese (Doutoramento) IPEN/T Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP FAPESP:00/02118-9

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Libri sul tema "Automobiles Catalytic converters"

CAPOC (3rd 1994 Brussels, Belgium). Catalysis and automotive pollution control III: Proceedings of the Third International Symposium (CAPoC 3), Brussels, Belgium, April 20-22, 1994. Edited by Frennet A. 1930- and Bastin J. M. Amsterdam: Elsevier, 1995.

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CAPOC (1st 1986 Brussels, Belgium). Catalysis and automotive pollution control: Proceedings of the First International Symposium (CAPOC I), Brussels, September 8-11, 1986. Edited by Crucq A. 1933- and Frennet A. 1930-. Amsterdam: Elsevier, 1987.

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1941-, Farrauto Robert J., and Gulati Suresh T, eds. Catalytic air pollution control: Commercial technology. 3rd ed. Hoboken, N.J: Wiley, 2009.

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Heck, Ronald M. Catalytic air pollution control: Commercial technology. New York: Van Nostrand Reinhold, 1995.

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CAPOC, (4th 1997 Brussels Belgium). Catalysis and automotive pollution control IV: Proceedings of the Fourth International Symposium (CAPoC4), Brussels, Belgium, April 9-11, 1997. Amsterdam: Elsevier, 1998.

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CAPOC (2nd 1990 Brussels, Belgium). Catalysis and automotive pollution control II: Proceedings of the Second International Symposium (CAPoC 2), Brussels, Belgium, September 10-13, 1990. Edited by Crucq A. 1933-. Amsterdam: Elsevier, 1991.

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Sideris, Marios. Methods for monitoring and diagnosing the efficiency of catalytic converters: A patent-oriented survey. New York: Elsevier, 1998.

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Holzinger, Katharina. Politik des kleinsten gemeinsamen Nenners?: Umweltpoltitische Entscheidungsprozesse in der EG am Beispiel der Einführung des Katalysatorautos. Berlin: Edition Sigma, 1994.

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Mines, United States Bureau of. High-temperature cyanide leaching of platinum-group metals from automobile catalysts--laboratory tests. Pittsburgh, PA: U.S. Dept. of the Interior, Bureau of Mines, 1991.

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Kuczynski, R. J. High-temperature cyanide leaching of platinum-group metals from automobile catalysts--pilot plant study. [Washington, D.C.?]: U.S. Dept. of Interior, Bureau of Mines, 1995.

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Capitoli di libri sul tema "Automobiles Catalytic converters"

Makinde, O. D. "Modelling the Thermal Operation in a Catalytic Converter of an Automobile's Exhaust." In Mathematical Modeling, Simulation, Visualization and e-Learning, 51–61. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-74339-2_4.

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Verma, Rajesh P., Ayush Kumar, P. K. Chauhan, and Ankit Dimri. "Fuzzy Logic Modeling of Explanatory Variables of Catalytic Convertor of an Automobile for Prediction of CO2 Emission." In Lecture Notes in Mechanical Engineering, 97–105. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-6577-5_11.

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Morton-Bermea, Ofelia, Elizabeth Hernández-Álvarez, Sara Ordóñez-Godínez, Laura E. Beramendi-Orosco, Josué Vega-Rodríguez, and Omar Amador-Muñoz. "Increase of the Environmental Pt Concentration in the Metropolitan Area of Mexico City Associated to the Use of Automobile Catalytic Converters." In Environmental Science and Engineering, 257–64. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-44559-4_16.

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Taylor, K. C. "Automobile Catalytic Converters." In Catalysis and Automotive Pollution Control, Proceedings of the First International Symposium (CAPOC I), 97–116. Elsevier, 1987. http://dx.doi.org/10.1016/s0167-2991(09)60416-x.

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Martin, Andreas, Venkata Narayana Kalevaru, and Jörg Radnik. "Palladium in Heterogeneous Oxidation Catalysis." In Petrochemical Catalyst Materials, Processes, and Emerging Technologies, 53–81. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-4666-9975-5.ch003.

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Palladium is one of the precious group metals mainly used in automobile catalytic converters. Besides, it has an importance in various catalytic processes. Although it is well known for hydrogenation reactions, various oxidations can also be catalyzed by palladium. This chapter gives an overview on the most common application of palladium catalysts in heterogeneously catalyzed acetoxylation, i.e. the acetoxylation of ethylene to vinyl acetate. Derived from this knowledge, the authors summarize in detail recently accumulated research results in acetoxylation of toluene to benzyl acetate that can be easily converted to benzyl alcohol. The chapter includes a detailed description of catalyst syntheses, gas phase oxidation runs, comprehensive characterizations and a deep understanding in catalyst-feed interaction. This development can turn away the manufacture of important petrochemicals from chlorine chemistry to oxidations using molecular oxygen.

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Nievergeld, A. J. L., J. H. B. J. Hoebink, and G. B. Marin. "The performance of a monolithic catalytic converter of automobile exhaust gas with oscillatory feeding of Co, No, and O2: A modelling study." In Catalysis and Automotive Pollution Control III, Proceedings of the Third International Symposium CAPoC 3, 909–18. Elsevier, 1995. http://dx.doi.org/10.1016/s0167-2991(06)81484-9.

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Atti di convegni sul tema "Automobiles Catalytic converters"

Warner, Brent L., Ayele A. Tegegne, and Muhammad K. Akbar. "Design of an Efficient Catalytic Converter Using CFD Techniques." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-67181.

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This study presents the design of an efficient catalytic converter with increased flow rate and minimum pressure drop using Computational Fluid Dynamics (CFD) techniques. Automobile engines produce undesirable emissions during the combustion process, such as NOx, CO, and unburned hydrocarbons. In addition to these harmful gases, particulate matter, such as lead and soot, is created. As a countermeasure, automobiles are equipped with catalytic converters, which are designed to play a vital role in eradicating emissions. However, due to the catalyst and filler materials found inside the converte

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Pukalskas, Saugirdas, Rytis Zautra, Saulius Nagurnas, Jonas Matijošius, Virginijus Švelnia, Ričardas Vėgneris, Vidas Žuraulis, and Romualdas Juknelevičius. "Research Of Efficiency Of Catalytic Converters In Automobiles With An Otto Engine." In The 8th International Conference "Transbaltica ‘2013". Vilnius, Lithuania: Vilnius Gediminas Technical University Publishing House Technika, 2013. http://dx.doi.org/10.3846/transbaltica2013.037.

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Parekh, K., R. Mourhatch, and P. B. Aswath. "ZDDP-Additive-Catalyst Interactions in Engine Oil." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-64075.

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The phosphorous content in engine oil is found to be the major cause of the poisoning of Catalytic converters in automobiles, hence environmental regulations limiting the phosphorous level in GF4 and GF5 oils have been introduced. Zinc dialkyl dithiophosphate (ZDDP) being the only major source of phosphorous in current engine oils, is also an indispensable component of the additive package in these oils for it has been the primary anti wear — as well as anti oxidant — additive for over fifty years. Efforts are made to replace the ZDDP with other materials with the same properties which would n

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Parise, Ronald. "Electrical Energy Production in an Automobile Catalytic Converter." In 2nd International Energy Conversion Engineering Conference. Reston, Virigina: American Institute of Aeronautics and Astronautics, 2004. http://dx.doi.org/10.2514/6.2004-5587.

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Aradi, Allen A., Joseph W. Roos, Ben F. Fort, Thomas E. Lee, and Robert I. Davidson. "The Physical and Chemical Effect of Manganese Oxides on Automobile Catalytic Converters." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1994. http://dx.doi.org/10.4271/940747.

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Roeb, Martin, Christian Sattler, Ruth Klu¨ser, Nathalie Monnerie, Lamark de Oliveira, Athanasios G. Konstandopoulos, Christos Agrafiotis, et al. "Solar Hydrogen Production by a Two-Step Cycle Based on Mixed Iron Oxides." In ASME 2005 International Solar Energy Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/isec2005-76126.

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A very promising method for the conversion and storage of solar energy into a fuel is the dissociation of water to oxygen and hydrogen, carried out via a two-step process using metal oxide redox systems such as mixed iron oxides, coated upon multi-channeled honeycomb ceramic supports capable of absorbing solar irradiation, in a configuration similar to that encountered in automobile exhaust catalytic converters. With this configuration, the whole process can be carried out in a single solar energy converter, the process temperature can be significantly lowered compared to other thermo-chemical

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Murphy, Oliver J., Rajesh T. Kukreja, and Craig C. Andrews. "Electrically Initiated Chemically Heated Catalytic Converter to Reduce Cold-Start Emissions from Automobiles." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1999. http://dx.doi.org/10.4271/1999-01-1233.

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Rajendran, Rajasekar, U. Logesh, N. S. Praveen, and Ganesan Subbiah. "Optimum design of catalytic converter to reduce carbon monoxide emissions on diesel engine." In 3RD INTERNATIONAL CONFERENCE ON FRONTIERS IN AUTOMOBILE AND MECHANICAL ENGINEERING (FAME 2020). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0034427.

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Menon, Shruti Mohandas, and Navid Goudarzi. "Exhaust Systems: CO2 Emission Reduction Using Zeolite Catalyst." In ASME 2017 11th International Conference on Energy Sustainability collocated with the ASME 2017 Power Conference Joint With ICOPE-17, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/es2017-3389.

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Air pollution is a leading public health concern that needs to be tackled. About 30% of the total greenhouse gas emissions, such as CO, HC and NOx are due to automobiles. By 2030, the US Department of Transportation aims to reduce light duty vehicle emissions by 18%. This can be achieved by public policy approaches such as implementing emission control norms and performance improvements such as exhaust system design. In this work, the implementation of a pure Zeolite catalyst to reduce the exhaust CO2 emission of a SI engine is studied theoretically and experimentally. The complete exhaust sys

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Jayapalan, Senthilkumar, B. R. Ramesh Bapu, Kalaiyarasan, P. Hemanthkumar, Jayaprakash Venugopal, Anish Mariadhas, and S. Sivasaravanan. "Experimental investigation on emission reduction in diesel engine by using biodiesel with catalytic converter." In 3RD INTERNATIONAL CONFERENCE ON FRONTIERS IN AUTOMOBILE AND MECHANICAL ENGINEERING (FAME 2020). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0034645.

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Rapporti di organizzazioni sul tema "Automobiles Catalytic converters"

Zaera, F., and M. T. Paffett. Kinetic studies of competitive adsorption processes related to automobile catalytic converters. Office of Scientific and Technical Information (OSTI), December 1998. http://dx.doi.org/10.2172/562575.

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