Bibliografías temáticas / Catalyst warm-up

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Literatura académica sobre el tema "Catalyst warm-up"

Autor: Grafiati
Publicado: 1 de junio de 2024

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Artículos de revistas sobre el tema "Catalyst warm-up"

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Umehara, K. "HC reduction system for cold start and warm-up phases — Improvement of catalyst warm-up by retarded ignition." JSAE Review 18, no. 1 (1997): 67–68. http://dx.doi.org/10.1016/s0389-4304(96)00056-2.

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Khalilikhah, O., and M. Shalchian. "Modelling and Fuzzy-Threshold Control of SI Engine for Emission Reduction during Cold Start Phase." International Journal of Automotive and Mechanical Engineering 16, no. 4 (2019): 7225–42. http://dx.doi.org/10.15282/ijame.16.4.2019.05.0539.

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We present a controllable model of an internal combustion engine that captures the overlapping of the cylinder valves as a controllable parameter and its effect on engine efficiency and EGR rates. The model parameters have been calibrated for the EF7 engine and validated with experimental data. This model successfully estimates the performance and HC and NOx emissions concentration of the engine under cold start operating condition. A model-based fuzzy-threshold control strategy has been proposed in cold start operating condition. This strategy uses the overlapping angle of the cylinder inlet
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3

Benjamin, S. F., and C. A. Roberts. "Automotive catalyst warm-up to light-off by pulsating engine exhaust." International Journal of Engine Research 5, no. 2 (2004): 125–47. http://dx.doi.org/10.1243/146808704773564541.

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Benjamin, S. F., and C. A. Roberts. "Warm up of automotive catalyst substrates: Comparison of measurements with predictions." International Communications in Heat and Mass Transfer 25, no. 1 (1998): 19–32. http://dx.doi.org/10.1016/s0735-1933(97)00134-6.

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5

Jeong, S.-J., and W.-S. Kim. "A new strategy for improving the warm-up performance of a light-off auto-catalyst for reducing cold-start emissions." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 215, no. 11 (2001): 1179–96. http://dx.doi.org/10.1243/0954407011528725.

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Light-off catalysts are often used to minimize cold-start emissions. The improved coldstart performance of light-off catalysts (LOCs) needs the optimal design in terms of flow distribution, geometric surface areas (GSA), precious metal (PM) loading, cell density and space velocity (SV). In this study, these influential factors are numerically investigated using an integrated numerical technique by considering not only the three-dimensional fluid flow but also the heat and mass transfer with chemical reactions. The present results indicate that uneven catalyst loading by depositing highly activ
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6

Benjamin, S. F., and C. A. Roberts. "Catalyst warm-up to light-off by pulsating engine exhaust: Two-dimensional studies." International Journal of Engine Research 5, no. 3 (2004): 257–80. http://dx.doi.org/10.1243/1468087041549607.

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Benjamin, S. F., and C. A. Roberts. "Modelling warm-up of an automotive catalyst substrate using the equivalent continuum approach." International Journal of Vehicle Design 22, no. 3/4 (1999): 253. http://dx.doi.org/10.1504/ijvd.1999.001868.

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8

JungKim, Chan, Sank Wook-Han, Ki Hyun Kim, Moo Yeon Lee, and Gee Soo Lee. "Effects of the exhaust gas heat recovery system with a plate heat exchanger on the warm-up performance characteristics of the gasoline engine." International Journal of Engineering & Technology 7, no. 2.12 (2018): 136. http://dx.doi.org/10.14419/ijet.v7i2.12.11110.

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Background/Objectives: To meet the regulations for the fuel economy, an EHRS (Exhaust gas Heat Recovery System, which was installed within the vehicle exhaust system and recovered the heat from the exhaust gas, were needed. The EHRS enabled the engine to achieve the fast warm-up performance for reducing friction loss during the cold start.The objective of this paper was to investigate the effects of the design parameters of the EHRS with a plate heat exchanger on the warm-up performance of a gasoline engine.Methods/Statistical analysis: The EHRS with the plate heat exchanger was manufactured a
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Benjamin, S. F., and C. A. Roberts. "Warm up of an automotive catalyst substrate by pulsating flow: a single channel modelling approach." International Journal of Heat and Fluid Flow 21, no. 6 (2000): 717–26. http://dx.doi.org/10.1016/s0142-727x(00)00025-4.

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Merkisz, Jerzy, Jacek Pielecha, and Monika Andrych-Zalewska. "Influence of the Length of a Catalyst-Coated Glow Plug on Exhaust Emissions." Energies 13, no. 24 (2020): 6557. http://dx.doi.org/10.3390/en13246557.

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This paper discusses the application of an in-cylinder catalyst in reducing the exhaust emissions from a diesel engine. This is an additional method of exhaust gas aftertreatment; yet the placement of a catalyst in the combustion chamber (i.e., the closest location to the process of combustion) allows a reduction of the emissions ‘at source’ (the catalyst applied on the glow plugs). For the investigations, we used an engine dynamometer to reproduce the traffic conditions of a homologation test carried out on a chassis dynamometer. We carried out the investigations on a Euro 4 1.3 JTD MultiJet
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Tesis sobre el tema "Catalyst warm-up"

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Hambarek, Djamel Eddine. "Développement d'une méthodologie d'essais dynamiques appliquée à la mise au point moteur." Electronic Thesis or Diss., Ecole centrale de Nantes, 2023. http://www.theses.fr/2023ECDN0035.

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Les travaux de cette thèse de doctorat s’inscrivent dans le contexte d’évolution desnormes de dépollution des moteurs thermiquescouplée aux exigences de baisse de la consommation des véhicules. La méthodologie développée tente de répondre avec un processus industriel efficace aux exigences d’émissions en roulage réel, dites RDE (Real Driving Emissions). La méthode proposée est basée sur la technique des plans d’expériences dynamiques utilisant les suites à faible discrépance : les résultats d’essais sont utilisés afin d’entraîner un modèle de réseau de neurones type LSTM capable de prédire l’h
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2

Cedeño, Alejandro. "Sintering of a Pt/Al₂O₃ automotive exhaust oxidation catalyst effect on converter "warm-up" performance /." 1989. http://catalog.hathitrust.org/api/volumes/oclc/20051839.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 1989.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 183-192).
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Actas de conferencias sobre el tema "Catalyst warm-up"

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Ball, Douglas J. "Distribution of Warm-Up and Underfloor Catalyst Volumes." In International Fuels & Lubricants Meeting & Exposition. SAE International, 1992. http://dx.doi.org/10.4271/922338.

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Lepreux, Olivier, Yann Creff, and Nicolas Petit. "Warm-up strategy for a Diesel Oxidation Catalyst." In 2009 European Control Conference (ECC). IEEE, 2009. http://dx.doi.org/10.23919/ecc.2009.7074995.

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3

Cedrone, Kevin, and Wai K. Cheng. "Using Valve Timing and Exhaust Back Pressure to Improve Catalyst Warm-Up Time." In SAE/KSAE 2013 International Powertrains, Fuels & Lubricants Meeting. SAE International, 2013. http://dx.doi.org/10.4271/2013-01-2656.

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Ball, Douglas J. "A Warm-Up - Underfloor Converter Parametric Study: Effects of Catalyst Technology on Emission Performance." In 1996 SAE International Fall Fuels and Lubricants Meeting and Exhibition. SAE International, 1996. http://dx.doi.org/10.4271/961905.

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5

Salehi, Rasoul, and Anna G. Stefanopoulou. "Optimal Exhaust Valve Opening Control for Fast Aftertreatment Warm Up in Diesel Engines." In ASME 2018 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/dscc2018-9178.

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This paper proposes to optimally adjust the exhaust valve opening (EVO) timing for faster selective catalytic reduction (SCR) aftertreatment system warm-up during the cold start phase of the federal test procedure (FTP). Early termination of the power stroke by EVO timing advance increases the engine exhaust gas temperature. It, on the other hand, causes exhaust flow rate reduction that decreases the coefficient of the heat transfer from the exhaust gas to the catalyst. The competing effects along with the fuel consumption increase associated with early EVO need careful consideration and the o
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6

Jeong, Soo-Jin, and Woo-Seung Kim. "Three-Dimensional Numerical Study on the Use of Warm-up Catalyst to Improve Light-Off Performance." In SAE 2000 World Congress. SAE International, 2000. http://dx.doi.org/10.4271/2000-01-0207.

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7

Karkanis, Anastasios N., Pantelis N. Botsaris, and Panagiotis D. Sparis. "A Catalyst Surface Control Automation System for Emission Reduction During Cold Start." In ASME 2004 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/icef2004-0865.

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This paper presents and discusses experimental data obtained during test simulating the test cycle ECE-15 for a relatively simple method for the reduction of pollutant emissions during a cold start. During a cold start the volume of the exhaust gases is considerably smaller than the ones under full load. Therefore, only a small portion of the catalyst active surface is used to process the gases at the cold start phase. After the light-off at the initial surface the exhaust gases pass from the total catalytic surface which is already pre-heated from the first phase. The experimental results pre
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8

Ravikumar, Avinash, Ankur Bhatt, Brian Gainey, and Benjamin Lawler. "GT-Suite Modeling of Thermal Barrier Coatings in a Multi-Cylinder Turbocharged DISI Engine for Catalyst Light-Off Delay Improvement." In Energy & Propulsion Conference & Exhibition. SAE International, 2023. http://dx.doi.org/10.4271/2023-01-1602.

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&lt;div class="section abstract"&gt;&lt;div class="htmlview paragraph"&gt;Catalytic converters, which are commonly used for after-treatment in SI engines, exhibit poor performance at lower temperatures. This is one of the main reasons that tailpipe emissions drastically increase during cold-start periods. Thermal inertia of turbocharger casing prolongs the catalyst warm-up time. Exhaust enthalpy management becomes crucial for a turbocharged direct injection spark ignition (DISI) engine during cold-start periods to quickly heat the catalyst and minimize cold-start emissions. Thermal barrier coa
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9

Sanketi, Pannag R., J. Karl Hedrick, and Tomoyuki Kaga. "A Simplified Catalytic Converter Model for Automotive Coldstart Control Applications." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-80696.

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More than three-fourths of the unburned hydrocarbon (HC) emissions in a typical drive cycle of an automotive engine are produced in the initial 2 minutes of operation, commonly known as the coldstart period. Catalyst light-off plays a very important role in reducing these emissions. Model-based paradigm is used to develop a control-oriented, thermodynamics based simple catalyst model for coldstart purposes. It is a modified version of an available model consisting of thermal dynamics and static efficiency maps, the critical modification being in the thermal sub-model. Oxygen storage phenomenon
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10

HAMBAREK, Djamel Eddine, Jean-François PETIOT, Pascal Chesse, and Eric WATEL. "Towards a Complete Engine Calibration Methodology: Dynamic Design of Experiments (DDoE), Application to Catalyst Warm-Up Phase." In 15th International Conference on Engines & Vehicles. SAE International, 2021. http://dx.doi.org/10.4271/2021-24-0028.

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