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Journal articles on the topic 'Diesel exhaust oxidation catalyst'

Author: Grafiati

Published: 9 September 2021

Last updated: 29 July 2025

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1

Nakamura, Maki, Koji Yokota, and Masakuni Ozawa. "Numerical Calculation Optimization for Particulate Matter Trapping and Oxidation of Catalytic Diesel Particulate Filter." Applied Sciences 15, no. 5 (2025): 2356. https://doi.org/10.3390/app15052356.

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In recent years, the transition to electric vehicles has accelerated significantly. However, this shift does not imply the complete elimination of diesel engine vehicles, particularly in commercial and cargo transport, where diesel engines remain essential due to their high thermal efficiency and torque. Despite their advantages, diesel engines produce particulate matter (PM) in their exhaust, which poses environmental and health risks. To mitigate PM emissions, diesel particulate filters (DPFs) are integrated into exhaust systems. However, as PM accumulates in the DPF, pressure drops occur, i

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2

Schröder, Jörg, Franziska Hartmann, Robert Eschrich, et al. "Accelerated performance and durability test of the exhaust aftertreatment system by contaminated biodiesel." International Journal of Engine Research 18, no. 10 (2017): 1067–76. http://dx.doi.org/10.1177/1468087417700762.

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The consumption of fossil and especially alternative fuels from renewable sources is supposed to rise in the future. Biofuels as well as fossil fuels often contain alkali and alkaline earth metal impurities that are potential poisons for automotive exhaust catalysts. The impact of these contaminations on the long-time performance of the exhaust aftertreatment system is a major concern. However, engine test bench studies consume considerable amounts of fuel, manpower and time. The purpose of this research project was to examine whether accelerated engine tests can be achieved by a modified dies

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Goto, Yosuke, Naohiro Kato, Shota Kawashima, Yoshiyuki Hayashi, Hideki Goto, and Masao Hori. "Applicable Diesel Oxidation Catalyst for Multi-Diesel Exhaust System." SAE International Journal of Fuels and Lubricants 7, no. 2 (2014): 496–502. http://dx.doi.org/10.4271/2014-01-1511.

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4

Rümmele, Florian, Alexander Susdorf, Syed Muhammad Salman Haider, and Robert Szolak. "Light-off Investigation of Oxymethylene Ether (OME) Considering the Presence of the Exhaust Components Heptane, Carbon, and Nitrogen Monoxide." Emission Control Science and Technology 7, no. 4 (2021): 348–58. http://dx.doi.org/10.1007/s40825-021-00202-5.

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AbstractSynthetic fuels and fuel blends like OMEs can contribute to tank-to-wheel CO2 emission savings. At the same time, it is known that these fuels have a lower exhaust temperature compared to conventional diesel. This effect has major impact on the exhaust after-treatment system, particularly in cold start conditions. This paper investigates the light-off behavior of exhaust gases containing OMEs by temperature-programmed oxidation experiments using a state-of-the-art oxidation catalyst. The main side product of catalytic oxidation of OMEs between 100 °C and the oxidation temperature T50,

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Jabłońska, Magdalena, and Regina Palkovits. "It is no laughing matter: nitrous oxide formation in diesel engines and advances in its abatement over rhodium-based catalysts." Catalysis Science & Technology 6, no. 21 (2016): 7671–87. http://dx.doi.org/10.1039/c6cy01126h.

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N<sub>2</sub>O appears as one of the undesired by-products in exhaust gases emitted from diesel engine aftertreatment systems, such as diesel oxidation catalysts (DOC), lean NO<sub>x</sub> trap (LNT, also known as NO<sub>x</sub> storage and reduction (NSR)) or selective catalytic reduction (NH<sub>3</sub>-SCR and HC-SCR) and ammonia slip catalysts (ASC, AMOX, guard catalyst).

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Leonardi, Sabrina Antonela, Eduardo Ernesto Miró, and Viviana Guadalupe Milt. "Activity of Catalytic Ceramic Papers to Remove Soot Particles—A Study of Different Types of Soot." Catalysts 12, no. 8 (2022): 855. http://dx.doi.org/10.3390/catal12080855.

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Diesel soot particles are of concern for both the environment and health. To catalytically remove them, it is important to know their structure and composition. There is little described in the literature on how catalysts favor the combustion of different soot fractions. In this work, programmed temperature oxidation (TPO) experiments were carried out using Co,Ce or Co,Ba,K catalysts supported on ceramic papers. Soot particles were obtained by burning diesel fuel in a vessel (LabSoot) or by filtering exhaust gases from a turbo diesel engine in a DPF filter (BenchSoot), and compared with a comm

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Yashnik, S. A. "Catalytic systems for neutralization of exhaust gases from diesel engines: modern challenges and technological solutions to improve a diesel oxidation catalyst." Kataliz v promyshlennosti 22, no. 2 (2022): 25–41. http://dx.doi.org/10.18412/1816-0387-2022-2-25-41.

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Diesel vehicles are responsible for the emission of not only soot and NОx to the environment, but also various organic and inorganic toxic compounds. The review provides a detailed discussion of the place of oxidation catalyst in the modern system for purification of exhaust gases from diesel engines, the ways to improve and optimize the oxidation catalysts intended for the neutralization of carbon monoxide and hydrocarbons according to the accepted standards, and the methods for decreasing the content of Pt group metals in the indicated catalytic systems.

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8

Wu, Gang, Guoda Feng, Yuelin Li, et al. "A Review of Thermal Energy Management of Diesel Exhaust after-Treatment Systems Technology and Efficiency Enhancement Approaches." Energies 17, no. 3 (2024): 584. http://dx.doi.org/10.3390/en17030584.

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The DOC (diesel oxidation catalyst), DPF (diesel particulate filter), SCR (selective catalytic reduction), and ASC (ammonia slip catalyst) are widely used in diesel exhaust after-treatment systems. The thermal management of after-treatment systems using DOC, DPF, SCR, and ASC were investigated to improve the efficiency of these devices. This paper aims to identify the challenges of this topic and seek novel methods to control the temperature. Insulation methods and catalysts decrease the energy required for thermal management, which improves the efficiency of thermal management. Thermal insula

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9

Su, Changsheng, Yujun Wang, Ashok Kumar, and Paul McGinn. "Simulating Real World Soot-Catalyst Contact Conditions for Lab-Scale Catalytic Soot Oxidation Studies." Catalysts 8, no. 6 (2018): 247. http://dx.doi.org/10.3390/catal8060247.

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In diesel soot oxidation studies, both well-defined model soot and a reliable means to simulate realistic contact conditions with catalysts are crucial. This study is the first attempt in the field to establish a lab-scale continuous flame soot deposition method in simulating the “contact condition” of soot and a structured diesel particulate filter (DPF) catalyst. The properties of this flame soot were examined by means of X-ray diffraction (XRD) and transmission electron microscopy (TEM) for structure analysis, Brunauer-Emmett-Teller (BET) for surface area analysis, and thermogravimetric ana

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Promhuad, Punya, and Boonlue Sawatmongkhon. "Soot Oxidation in Diesel Exhaust on Silver Catalyst Supported by Alumina, Titanium and Zirconium." E3S Web of Conferences 302 (2021): 01008. http://dx.doi.org/10.1051/e3sconf/202130201008.

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Diesel Particulate Filter (DPF) is used to limit the emission of particulate matter (PM). The operation of DPF has two consecutive functions which are filtration of PM and regeneration. Performance of DPF is reduced by clogging of the filter. This problem is improved by soot oxidation in the regeneration process. The soot is completely oxidized by oxygen when temperature is higher than 600 °C. However, the exhaust gas temperature in normal operating of the diesel engine is lower than the temperature of soot complete oxidation. The problem of low temperature in soot oxidation is improved by oxi

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11

Twigg, Martyn V. "Controlling automotive exhaust emissions: successes and underlying science." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 363, no. 1829 (2005): 1013–33. http://dx.doi.org/10.1098/rsta.2005.1547.

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Photochemical reactions of vehicle exhaust pollutants were responsible for photochemical smog in many cities during the 1960s and 1970s. Engine improvements helped, but additional measures were needed to achieve legislated emissions levels. First oxidation catalysts lowered hydrocarbon and carbon monoxide, and later nitrogen oxides were reduced to nitrogen in a two-stage process. By the 1980s, exhaust gas could be kept stoichiometric and hydrocarbons, carbon monoxide and nitrogen oxides were simultaneously converted over a single ‘three-way catalyst’. Today, advanced three-way catalyst systems

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12

Jirawongnuson, Sirichai, Worathep Wachirapan, Tul Suthiprasert, and Ekathai Wirojsakunchai. "A Parametric Study of Diesel Oxidation Catalyst Performance on CO Reduction in Diesel Dual Fuel Engine Exhaust." Key Engineering Materials 656-657 (July 2015): 538–43. http://dx.doi.org/10.4028/www.scientific.net/kem.656-657.538.

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In this research study, a synthetic exhaust gas system is employed to simulate various exhaust conditions similar to those from conventional diesel and Dual Fuel-Premixed Charge Compression Ignition (DF-PCCI) combustion. OEM DOC is tested to compare the effectiveness of reducing CO from both exhaust characteristics. Variations of the temperature and the concentration of CO, THC, and O2 are done to investigate DOC performance on CO reductions according to Design of Experiment (DOE) concept. The results showed that in DF-PCCI exhaust conditions, DOC requires higher exhaust gas temperature as wel

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Promhuad, Punya, Boonlue Sawatmongkhon, Nuwong Chollacoop, Kampanart Theinnoi, Thawatchai Wongchang, and Ekachai Juntasaro. "Activity for Diesel Particulate Matter Oxidation of Silver Supported on Al₂O₃, TiO₂, ZnO, and CeO₂: The Effect of Oxygen Concentration." E3S Web of Conferences 428 (2023): 01001. http://dx.doi.org/10.1051/e3sconf/202342801001.

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Particulate matter (PM) is a problem for human health the major producer of PM are diesel engines. The diesel particulate filters (DPFs) are used for the limitation of the PM. The DPF operation consists of two sequential functions: PM filtering and regeneration. One of the main contributing factors affecting the regeneration of DPF is the oxygen concentration in the exhaust gas. This study investigates the impact of different oxygen concentrations (99.99%, 10%, and 5%) on (PM) oxidation when using silver catalysts supported on CeO2, ZnO, TiO2, and Al2O3. The synthesized catalysts were characte

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14

Panchishnyi, V. I., and I. Yu Vorobiev. "Role of oxidation catalysis in after-treatment of exhaust gases of diesel engines." Trudy NAMI, no. 2 (July 12, 2023): 18–30. http://dx.doi.org/10.51187/0135-3152-2023-2-18-30.

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Introduction (problem statement and relevance). The oxidation catalysis provides the necessary efficiency and performance of diesel filters for trapping dispersed particles and systems for selective treatment of nitrogen oxides. In addition, oxidation catalysts can be a tool for neutralizing emissions of methane and some non-regulated but very hazardous polycyclic and partially oxidized hydrocarbons. There are also poorly studied theoretical issues of oxidation catalysis associated with mutual influence of toxic components contained in exhaust gases of diesel engines.The purpose of the study i

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15

Gao, Ying, and Hongqi Liu. "Control-oriented modeling of diesel oxidation catalyst." E3S Web of Conferences 268 (2021): 01027. http://dx.doi.org/10.1051/e3sconf/202126801027.

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Diesel oxidation catalyst outlet temperature control is crucial for heat management to realize diesel particulate filter active regenerative control. In order to control the temperature of the active regeneration process in the filter, the temperature response process of the semi-physical oxidation catalyst model structure is proposed as a multi-stage inertia plus delay, and the equivalent inlet temperature step of the fuel oxidation reaction of the exhaust pipe. Combined with the test test, the control oriented oxidation catalyst model is established.A control-oriented oxidation catalyst mode

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Quiles-Díaz, Susana, Javier Giménez-Mañogil, and Avelina García-García. "Catalytic performance of CuO/Ce0.8Zr0.2O2 loaded onto SiC-DPF in NOx-assisted combustion of diesel soot." RSC Advances 5, no. 22 (2015): 17018–29. http://dx.doi.org/10.1039/c4ra15595e.

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A copper/ceria-zirconia catalyst was incorporated onto a DPF following an environmentally-friendly impregnation procedure. Its catalytic activity was studied for diesel exhaust NO oxidation and soot combustion reactions.

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17

Serrano, José R., Francisco J. Arnau, Jaime Martín, and Ángel Auñón. "Development of a Variable Valve Actuation Control to Improve Diesel Oxidation Catalyst Efficiency and Emissions in a Light Duty Diesel Engine." Energies 13, no. 17 (2020): 4561. http://dx.doi.org/10.3390/en13174561.

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Growing interest has arisen to adopt Variable Valve Timing (VVT) technology for automotive engines due to the need to fulfill the pollutant emission regulations. Several VVT strategies, such as the exhaust re-opening and the late exhaust closing, can be used to achieve an increment in the after-treatment upstream temperature by increasing the residual gas amount. In this study, a one-dimensional gas dynamics engine model has been used to simulate several VVT strategies and develop a control system to actuate over the valves timing in order to increase diesel oxidation catalyst efficiency and r

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M., Nawdali* I. Zarguili J. Toyir H. Zaitan S. Tahiri H. Ahlafi. "TECHNOLOGY PROGRESSES IN DIESEL EXHAUST PARTICLES CONTROL." Global Journal of Engineering Science and Research Management 3, no. 9 (2016): 54–68. https://doi.org/10.5281/zenodo.159027.

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Implementation of straight and stringent legislation of the pollutant emissions from diesel-engine vehicles and exhaust after-treatment technologies requires the new technological development for diesel particulate matter (DPM) abatement. This article summarizes the current status of DPM control strategy. The main focus is put forward diesel particles composition, particulates formation mechanisms, the particle emissions standards, combustion control strategies and exhaust after-treatment systems for state-of-the-art DPF technologies. Also, the paper covers the DPF regeneration control methodo

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Andrych-Zalewska, Monika, Jerzy Merkisz, and Jacek Pielecha. "The influence of the heating time of a catalyst-covered glow plug on the exhaust emissions from a diesel engine." Combustion Engines 184, no. 1 (2021): 52–56. http://dx.doi.org/10.19206/ce-134738.

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The paper discusses the application of an in-cylinder catalyst allowing a reduction of the exhaust emissions from a diesel engine. Its placement in the combustion chamber, the area where the process of combustion takes place, allows reducing the emissions (carbon monoxide, hydrocarbons, particulate matter) ‘at source’. The paper presents the possibilities of boosting the efficiency of catalysts in diesel engines by extending the time of heating of a glow plug (the catalyst applied on the glow plug). The tests were performed for the following conditions: no heating (marked 0+0), glow plug heati

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20

Sun, Ke, Gecheng Zhang, Zhengyong Wang, et al. "Thermal Management of Diesel Engine Aftertreatment System Based on Ultra-Low Nitrogen Oxides Emission." Applied Sciences 14, no. 1 (2023): 237. http://dx.doi.org/10.3390/app14010237.

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To achieve diesel engine ultra-low nitrogen oxide emission, light-off selective catalyst reduction (LO-SCR) has been suggested for better performance with lower exhaust temperature. An electric heater upstream of the exhaust aftertreatment system was applied to significantly decrease the NOx emission at a low exhaust temperature. With a 7.2 kW electric heater coupled with LO-SCR, the NOx emission during 200~500 s of the world harmonized transient cycle (WHTC) decreased from 282.6 ppm to 61.5 ppm, which is a decrease of 45%. Application of an upstream diesel oxidation catalyst (DOC) decreased t

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Guardiola, Carlos, Benjamin Pla, Pau Bares, and Javier Mora. "An on-board method to estimate the light-off temperature of diesel oxidation catalysts." International Journal of Engine Research 21, no. 8 (2018): 1480–92. http://dx.doi.org/10.1177/1468087418817965.

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Current diesel engine regulations include on-board diagnostic requirements so that after-treatment systems need on-board methods to detect their aging state through the available measurements. In a state-of-the-art diesel exhaust line, two temperature and [Formula: see text] measurements can be found upstream and downstream of the diesel oxidation catalyst. Thus, the strategy presented in this article makes use of these measurements to estimate the light-off temperature, which has been widely studied as a characteristic of diesel oxidation catalyst aging. The light-off temperature estimation p

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22

Fino, Debora, Nunzio Russo, Emanuele Cauda, et al. "Novel Approches in Oxidative Catalysis for Diesel Particulate Abatement." Advances in Science and Technology 45 (October 2006): 2083–88. http://dx.doi.org/10.4028/www.scientific.net/ast.45.2083.

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Next 2008 European legislation on diesel engines will impose the use of specific traps, placed in the car exhaust line, so as to meet very stringent particulate emission limits (0.005 g/km). This paper provides a survey of the advancement status of R&D in the field of diesel particulate traps. Special emphasis is given to the combined use of traps and catalysts for regeneration purposes via catalytic combustion of the collected soot in the traps. Issues like trap materials selection, catalyst development, catalytic vs. non-catalytic trap performance are addressed. Specific highlights of th

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Li, T., and H. Ogawa. "Regulated emissions and speciated hydrocarbons from smokeless low-temperature combustion diesel engines with ultra-high exhaust gas recirculation and exhaust oxidation catalyst." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 223, no. 5 (2009): 673–83. http://dx.doi.org/10.1243/09544070jauto1047.

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With ultra-high exhaust gas recirculation (EGR) suppressing the in-cylinder soot and nitrogen oxides (NO x) formation as well as with the exhaust oxidation catalyst removing the engine-out total unburned hydrocarbon (THC) and carbon monoxide (CO) emissions, clean diesel combustion in terms of low regulated emissions (NO x, particulate matter, THC, and CO) can be established in an operating range up to 50 per cent load. However, unregulated emissions such as aldehydes, aromatics, and 1,3-butadiene, which are seen as a severe threat to human health, are concerned when operating the engine with u

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Lee, Kyoungbok, Jongin Lee, Sangho Lee, Kwangchul Oh, and Sungwook Jang. "Fuel Consumption and Emission Reduction for Non-Road Diesel Engines with Electrically Heated Catalysts." Catalysts 13, no. 6 (2023): 950. http://dx.doi.org/10.3390/catal13060950.

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In this study, an exhaust system compliant with future regulations was developed for a non-road 110PS engine with a Tier-4f aftertreatment system, and the emission characteristics of the engine were investigated in the non-road transient mode (NRTC). For the system to comply with future exhaust regulations, a DPF was installed, and an electrical heated catalyst (EHC) device was installed to manage exhaust gas temperature. The emission characteristics of exhaust gas were examined according to the power and applied duration of EHC, and the effects of catalyst coating and the urea water solution

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Jang, Jaehwan, Seongyool Ahn, Sangkyung Na, Jinhee Koo, Heehwan Roh, and Gyungmin Choi. "Effect of a Plasma Burner on NOx Reduction and Catalyst Regeneration in a Marine SCR System." Energies 15, no. 12 (2022): 4306. http://dx.doi.org/10.3390/en15124306.

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The problem of environmental pollution by the combustion of fossil fuels in diesel engines, to which NOx emission is a dominant culprit, has accelerated global environmental pollution and global and local health problems such as lung disease, cancer, and acid rain. Among various De-NOx technologies, SCR (Selective Catalytic Reduction) systems are known to be the most effective technology for actively responding to environmental regulations set by the IMO (International Maritime Organization) in marine diesel applications. The ammonia mixes with the exhaust gas and reacts with the NOx molecules

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Wang, Ning, Yao Sun, Yunfeng Hu, Jinghua Zhao, and Xun Gong. "Design of Diesel Oxidation Catalyst Temperature Control System Based on Fuzzy Adaptive PID." Journal of Physics: Conference Series 2203, no. 1 (2022): 012041. http://dx.doi.org/10.1088/1742-6596/2203/1/012041.

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Abstract This paper presents a temperature control framework of Diesel Oxidation Catalyst (DOC) of after-treatment system (ATS) which aims to increase the control precise of DOC temperature under different exhaust flow rates. To start with, a control-oriented DOC temperature model is established. Considering the sensitivity of DOC to different exhaust flow rate, a fuzzy adaptive PID temperature control system framework under the Smith predictor is designed. Finally, the controller is verified in the Matlab/Simulink. The results show that when tracking the desired temperature, the overshoot is

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Torregrosa-Rivero, Moreno-Marcos, Albaladejo-Fuentes, Sánchez-Adsuar, and Illán-Gómez. "BaFe1-xCuxO3 Perovskites as Active Phase for Diesel (DPF) and Gasoline Particle Filters (GPF)." Nanomaterials 9, no. 11 (2019): 1551. http://dx.doi.org/10.3390/nano9111551.

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BaFe1-xCuxO3 perovskites (x = 0, 0.1, 0.3 and 0.4) have been synthetized, characterized and tested for soot oxidation in both Diesel and Gasoline Direct Injection (GDI) exhaust conditions. The catalysts have been characterized by BET, ICP-OES, SEM-EDX, XRD, XPS, H2-TPR and O2-TPD and the results indicate the incorporation of copper in the perovskite lattice which leads to: i) the deformation of the initial hexagonal perovskite structure for the catalyst with the lowest copper content (BFC1), ii) the modification to cubic from hexagonal structure for the high copper content catalysts (BFC3 and

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Yang, Zhengzheng, Jun Li, Hailong Zhang, Yi Yang, Maochu Gong, and Yaoqiang Chen. "Size-dependent CO and propylene oxidation activities of platinum nanoparticles on the monolithic Pt/TiO2–YOxdiesel oxidation catalyst under simulative diesel exhaust conditions." Catalysis Science & Technology 5, no. 4 (2015): 2358–65. http://dx.doi.org/10.1039/c4cy01384k.

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Suthiprasert, Tul, Tanes Limpurimongkol, Sirichai Jirawongnuson, Tanet Aroonsrisopon, and Ekathai Wirojsakunchai. "Optimizing CO Reductions in a Diesel Oxidation Catalyst under Diesel Dual Fuel Exhaust Conditions." Engineering Journal 21, no. 5 (2017): 93–103. http://dx.doi.org/10.4186/ej.2017.21.5.93.

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Thangapandian, P., S. Paulsingarayar, R. Chandraprakash, S. Seenivasan, I. Vimal Kannan, and S. A. Siddeshwar. "Development and experimental studies of a light vehicle diesel after treatment system with DOC, DPF and urea SCR." Journal of Physics: Conference Series 2925, no. 1 (2024): 012008. https://doi.org/10.1088/1742-6596/2925/1/012008.

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Abstract Strict adherence to pollution limits poses a risk to light-duty diesel engines due to challenges in post-treatment procedures, product limitations, and emission criteria. This paper aims to determine the underlying principles for the technological development of an after-treatment technique that incorporates a diesel oxidation catalyst (DOC), catalytic Diesel Particle Filter (DPF), urea injector, and catalytic urea selective reduction (SCR). Implementing this selective catalytic reduction (SCR) technique would greatly enhance the catalyst’s ability to convert NOx by regulating the eva

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Fayad, Mohammed Ali, Azher Mouhsen Abed, Hussain Ali Hussain, et al. "Influence of Sophisticated Post-Injection Strategy and Oxygenated Fuel Blends on PM Characteristics and Improvement in Soot Oxidation Reactivity in Diesel Engine." Journal of Advanced Research in Fluid Mechanics and Thermal Sciences 125, no. 2 (2024): 93–105. https://doi.org/10.37934/arfmts.125.2.93105.

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Multiple injections strategy have been commonly effective technique applied in engines to reduce the exhaust emissions and management of exhaust catalyst systems. The effect of post-injection strategy (PIS) on soot characteristics and emissions in compression ignition (CI) diesel engine operating with oxygenated fuels (B100, B20 and B16) was experimentally studied in this study. In addition, the effect of PIS and oxygenated fuels properties on emissions, oxidation reactivity and nanostructure of soot emissions are studied and analysed. It is indicated that the PIS increase the emissions of CO

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Chen, Haoming, Tianle Li, Zhiming Xu, Wenju Wang, and Haihou Wang. "Oxidation of soot promoted by Fe-based spinel catalysts." Materials Research Express 9, no. 1 (2022): 015502. http://dx.doi.org/10.1088/2053-1591/ac3f5d.

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Abstract Diesel engine has attracted much attention because of its good power performance, fuel economy, reliability and durability, but the exhaust gas containing soot has significant impact on environment and human health. Catalyzed diesel particulate filter (CDPF) that reduces the activation energy of soot oxidation by catalysts are used to eliminate soot. In this work, MFe2O4 spinel (M = Cu, Ni and Co) was synthesized by sol-gel method to catalyze the oxidation of soot. The characterization results of MFe2O4 showed that CuFe2O4 possessed the smallest average grain size (65.6 nm) and the be

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SUCHECKI, Andrzej, Krzysztof ADAMASZEK, and Mariusz WISŁA. "Corrosion resistance of valve steel in diesel exhaust gas containing 5, 10 and 20 % of FAME." Combustion Engines 152, no. 1 (2013): 51–55. http://dx.doi.org/10.19206/ce-117012.

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The operating properties of exhaust valves under heavy thermal and mechanical loads are dependent on the strength of steel i.e. resistance to mechanical deformations under increased and high temperatures and high temperature corrosive action of hot exhaust gas. Long term operation of exhaust valves under the conditions of cyclic thermal and mechanical tensions in the environment of diesel exhaust gas where the main oxidizing components are oxygen, carbon dioxide and overheated steam leads to a corrosion of the steel surface and diffusion processes on the thin surface layer of steel, which, und

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Maksimov, I. M., G. V. Mavrin, A. V. Gordeev, and A. Yu Pogodin. "Active regeneration particulate filter operating cycle theoretical justification." Trudy NAMI, no. 1 (March 28, 2024): 31–44. http://dx.doi.org/10.51187/0135-3152-2024-1-31-44.

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Introduction (problem statement and relevance). Particulate filters or traps used in diesel vehicles to catch suspended particles require continuous and/or periodic regeneration in order to maintain operability. The order of diesel particulate filter loading and its regeneration can be presented in the form of an algorithm. Specific features of particulate filter functioning both in regular conditions and during active regeneration have been studied in a number of scientific papers, and the results obtained in them can be considered when developing the algorithm.The purpose of the work is deve

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Álvarez-Docio, Carmen M., Raquel Portela, Julián J. Reinosa, Fernando Rubio-Marcos, Laura Pascual, and José F. Fernández. "Performance and Stability of Wet-Milled CoAl2O4, Ni/CoAl2O4, and Pt,Ni/CoAl2O4 for Soot Combustion." Catalysts 10, no. 4 (2020): 406. http://dx.doi.org/10.3390/catal10040406.

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Low-energy wet milling was employed to activate commercial CoAl2O4 spinel and disperse mono- and multimetallic nanoparticles on its surface. This method yielded efficient Pt,Ni catalysts for soot oxidation in simulated diesel exhaust conditions. The characterization and activity results indicated that although Ni/CoAl2O4 was highly active, the presence of Pt was required to obtain a stable Ni(0.25 wt. %),Pt(0.75 wt. %)/CoAl2O4 catalyst under the operating conditions of diesel particulate filters, and that hot spots formation must be controlled to avoid the deactivation of the cobalt aluminate.

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Katare, Santhoji R., and Paul M. Laing. "Hydrogen in Diesel Exhaust: Effect on Diesel Oxidation Catalyst Flow Reactor Experiments and Model Predictions." SAE International Journal of Fuels and Lubricants 2, no. 1 (2009): 605–11. http://dx.doi.org/10.4271/2009-01-1268.

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K. Saikrishna and Dr K. Kishor. "Reduction of Emissions in a Single Cylinder Diesel Engine using Blends of Diesel & Cotton Seed Oil with Unconventional Catalytic Converter." International Journal of Emerging Science and Engineering 12, no. 7 (2024): 13–19. http://dx.doi.org/10.35940/ijese.f4502.12070624.

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This paper investigates the feasibility of mitigating emissions from diesel engines through the combined application of alternative fuels and an unconventional catalytic converter employing cost-effective catalysts. The dwindling reserves of fossil fuels necessitate the exploration of sustainable power sources for internal combustion engines, thereby reducing our dependence on these finite resources. This study evaluated the performance parameters and emissions of a single-cylinder, four-stroke, stationary diesel engine fueled with blends of 10%, 20%, and 30% cottonseed oil in diesel (by volum

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K., Saikrishna. "Reduction of Emissions in a Single Cylinder Diesel Engine using Blends of Diesel & Cotton Seed Oil with Unconventional Catalytic Converter." International Journal of Emerging Science and Engineering (IJESE) 12, no. 7 (2024): 13–19. https://doi.org/10.35940/ijese.F4502.12070624.

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<strong>Abstract: </strong>This paper investigates the feasibility of mitigating emissions from diesel engines through the combined application of alternative fuels and an unconventional catalytic converter employing cost-effective catalysts. The dwindling reserves of fossil fuels necessitate the exploration of sustainable power sources for internal combustion engines, thereby reducing our dependence on these finite resources. This study evaluated the performance parameters and emissions of a single-cylinder, four-stroke, stationary diesel engine fueled with blends of 10%, 20%, and 30% cottons

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Serrano, José Ramón, Pedro Piqueras, Joaquín de la Morena, and Enrique José Sanchis. "Late Fuel Post-Injection Influence on the Dynamics and Efficiency of Wall-Flow Particulate Filters Regeneration." Applied Sciences 9, no. 24 (2019): 5384. http://dx.doi.org/10.3390/app9245384.

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Late fuel post-injections are the most usual strategy to reach high exhaust temperature for the active regeneration of diesel particulate filters. However, it is important to optimise these strategies in order to mitigate their negative effect on the engine fuel consumption. This work aims at understanding the influence of the post-injection parameters, such as its start of injection and its fuel quantity, on the duration of the regeneration event and the fuel consumption along it. For this purpose, a set of computational models are employed to figure out in a holistic way the involved phenome

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Korhonen, Kimmo, Thomas Bjerring Kristensen, John Falk, et al. "Particle emissions from a modern heavy-duty diesel engine as ice nuclei in immersion freezing mode: a laboratory study on fossil and renewable fuels." Atmospheric Chemistry and Physics 22, no. 3 (2022): 1615–31. http://dx.doi.org/10.5194/acp-22-1615-2022.

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Abstract. We studied ice-nucleating abilities of particulate emissions from a modern heavy-duty diesel engine using three different types of fuel. The polydisperse particle emissions were sampled during engine operation and introduced to a continuous-flow diffusion chamber (CFDC) instrument at a constant relative humidity RHwater=110 %, while the temperature was ramped between −43 and −32 ∘C (T scan). The tested fuels were EN 590 compliant low-sulfur fossil diesel, hydrotreated vegetable oil (HVO), and rapeseed methyl ester (RME); all were tested without blending. Sampling was carried out at d

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AKIYAMA, Jiro, Hideyuki TSUNEMOTO, Hiromi ISHITANI, Murari M. ROY, Toshitaka MINAMI, and Masahiro NOGUCHI. "420 Influence of Oxidation Catalyst on Exhaust Odor in DI Diesel Engines." Proceedings of Conference of Hokkaido Branch 2000.40 (2000): 176–77. http://dx.doi.org/10.1299/jsmehokkaido.2000.40.176.

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Sampara, Chaitanya S., Edward J. Bissett, and Matthew Chmielewski. "Global Kinetics for a Commercial Diesel Oxidation Catalyst with Two Exhaust Hydrocarbons." Industrial & Engineering Chemistry Research 47, no. 2 (2008): 311–22. http://dx.doi.org/10.1021/ie070813x.

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MAYER, Andreas, Jan CZERWINSKI, and Paul ZELENKA. "Conditions of NO2-production in catalyzed DPF-systems." Combustion Engines 150, no. 3 (2012): 3–16. http://dx.doi.org/10.19206/ce-117026.

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NO2 is much more toxic than NO. Due to the use of oxidation catalysts and catalytic coatings in the exhaust gas systems in the last decades and due to the use of low sulphur fuels the average NO2-portion in exhaust gases of vehicles increases. Diesel oxidation catalysts (DOC) and Pt-containing DPF-coatings are generally used to support the regeneration of particle filters, which can be a source of strongly increased NO2-production. The present work shows some examples and summarizes the experiences in this matter elaborated at the Laboratories for IC-Engines & Exhaust Emissions Control (AF

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Liu, Guanlin, Weiqiang Liu, Yibin He, Jinke Gong, and Qiong Li. "Research on Influence of Exhaust Characteristics and Control Strategy to DOC-Assisted Active Regeneration of DPF." Processes 9, no. 8 (2021): 1403. http://dx.doi.org/10.3390/pr9081403.

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For the purpose of designing a reasonable control strategy for DOC-assisted DPF regeneration, a mathematical model that describes the thermal phenomenon both in a diesel oxidation catalyst (DOC) and diesel particulate filter (DPF) during regeneration is developed. All boundary conditions of this model are obtained by experiments. The effects of the main exhaust parameters such as exhaust mass flow rate, exhaust temperature, oxygen concentration and emission of reactants are investigated comprehensively. The effects of two main parameters of control strategy, DOC-out temperature and soot loadin

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Lapuerta, Magín, Ángel Ramos, David Fernández-Rodríguez, and Inmaculada González-García. "High-pressure versus low-pressure exhaust gas recirculation in a Euro 6 diesel engine with lean-NOx trap: Effectiveness to reduce NOx emissions." International Journal of Engine Research 20, no. 1 (2018): 155–63. http://dx.doi.org/10.1177/1468087418817447.

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Exhaust gas recirculation can be achieved by means of two different routes: the high-pressure route (high-pressure exhaust gas recirculation), where exhaust gas is conducted from upstream of the turbine to downstream of the compressor, and the low-pressure one (low-pressure exhaust gas recirculation), where exhaust gas is recirculated from downstream of the turbine and of the aftertreatment system to upstream of the compressor. In this study, the effectiveness of both exhaust gas recirculation systems on the improvement of the NOx-particulate matter emission trade-off has been compared on a Eu

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Dittrich, S., S. Kohsakowski, B. Wittek, et al. "Increasing the Size-Selectivity in Laser-Based g/h Liquid Flow Synthesis of Pt and PtPd Nanoparticles for CO and NO Oxidation in Industrial Automotive Exhaust Gas Treatment Benchmarking." Nanomaterials 10, no. 8 (2020): 1582. http://dx.doi.org/10.3390/nano10081582.

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PtPd catalysts are state-of-the-art for automotive diesel exhaust gas treatment. Although wet-chemical preparation of PtPd nanoparticles below 3 nm and kg-scale synthesis of supported PtPd/Al2O3 are already established, the partial segregation of the bimetallic nanoparticles remains an issue that adversely affects catalytic performance. As a promising alternative, laser-based catalyst preparation allows the continuous synthesis of surfactant-free, solid-solution alloy nanoparticles at the g/h-scale. However, the required productivity of the catalytically relevant size fraction <10 nm has ye

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Rizzotto, Valentina, Stefan Bajić, Dario Formenti, et al. "Comparison of Industrial and Lab-Scale Ion Exchange for the DeNOx-SCR Performance of Cu Chabazites: A Case Study." Catalysts 12, no. 8 (2022): 880. http://dx.doi.org/10.3390/catal12080880.

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The efficiency and robustness of selective catalytic reduction (SCR) by NH3 catalysts for exhaust gas purification, especially of heavy-duty diesel engines, will continue to play a major role, despite the increasing electrification of powertrains. With that in mind, the effect of the synthesis scale on commercially available Cu-exchanged chabazite catalysts for SCR was investigated through physicochemical characterizations and catalytic tests. During hydrothermal aging, both industrial and lab-scale prepared catalysts underwent structural dealumination of the zeolite framework and redistributi

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Ranji-Burachaloo, H., S. Masoomi-Godarzi, A. A. Khodadadi, M. Vesali-Naseh, and Y. Mortazavi. "Soot oxidation in a corona plasma-catalytic reactor." International Journal of Modern Physics: Conference Series 32 (January 2014): 1460348. http://dx.doi.org/10.1142/s2010194514603482.

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Oxidation of soot by corona plasma was investigated at conditions of exhaust gases from diesel engines, both in the absence and presence of CoO x as a catalyst. The CoO x catalyst nanoparticles were synthesized by a precipitation method. The BET surface area of the catalyst was 50 m2/g, corresponding to 23 nm particles. An aluminum grid was sequentially dip-coated for several times by suspensions of the soot in toluene and/or fine catalyst powder in DI water. The grid was used as the plate of a pin-to-plate corona reactor. Air at 180 °C was passed through the corona reactor to oxidize the soot

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YAMANE, Koji, and Yuzuru SHIMAMOTO. "Reduction of Exhaust Emissions from Biodiesel Fueled DI Diesel Engines by Oxidation Catalyst." Proceedings of the JSME annual meeting 2002.4 (2002): 67–68. http://dx.doi.org/10.1299/jsmemecjo.2002.4.0_67.

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Labhsetwar, Nitin K., M. Dhakad, S. S. Rayalu, et al. "Thermally stable metal ruthenate based soot oxidation catalyst for diesel exhaust emission control." Topics in Catalysis 42-43, no. 1-4 (2007): 299–302. http://dx.doi.org/10.1007/s11244-007-0195-x.

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