Download or read book An Experimental Study of Particulate Thermal Oxidation in a Catalyzed Filter During Active Regeneration written by Krishna Pradeep Chilumukuru and published by . This book was released on 2008 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book AN EXPERIMENTAL INVESTIGATION INTO THE EFFECT OF NO2 AND TEMPERATURE ON THE PASSIVE OXIDATION AND ACTIVE REGENERATION OF PARTICULATE MATTER IN A DIESEL PARTICULATE FILTER written by and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : In this study the oxidation of particulate matter (PM) retained in a catalyzed particulate filter (CPF) is investigated to understand the kinetics of PM oxidation. Seven passive oxidation and four active regeneration experiments were performed on a Cummins ISB 2013 280 hp engine and the production aftertreatment system adapted to a lab setup, in order to study the NO2 assisted and thermal oxidation of the PM retained in the CPF. The CPF was loaded with PM produced by the engine and the PM was then oxidized in the CPF under various Passive Oxidation (PO) and Active Regeneration (AR) conditions. First, the engine was operated at an engine condition that produced PM at a greater rate than the production setting, in order to load the CPF to 3.0±0.4 g/L in a suitable time of 6 hours. To study the NO2 assisted oxidation, exhaust at pre-determined engine conditions with low PM concentration (2 concentration and temperature was flowed through the CPF. During the PO testing, the exhaust temperature into the CPF varied from 299 - 385°C, the NO2 concentration varied between 137 - 1013 ppm and the exhaust mass flowrate varied between 3.63 - 12.0 kg/min. Thermal oxidation was studied by operating the engine at a specific condition where the exhaust at the Diesel Oxidation Catalyst (DOC) inlet was at a higher temperature than the light-off temperature of hydrocarbon oxidation in the DOC (300 °C). Late combustion cycle fuel dosing was performed and the hydrocarbons in the dosed fuel were oxidized across the DOC. This created an exotherm and raised the exhaust temperature into the CPF to the required value between 498 - 575°C to oxidize the PM retained in the CPF at the end of loading, by reaction with O2. The O2 concentration into the CPF varied between 8.17 to 9.03%. It was found that the NO2 assisted kinetics could be represented using the standard Arrhenius equation. The activation energy obtained using the standard Arrhenius model, is 94 kJ/gmol and the pre-exponential factor obtained is 25.5 1/ppm/s. The thermal oxidation reaction rate could be similarly represented using the O2 concentration and temperature over the range of conditions studied. The activation energy for thermal oxidation was found to be 136 kJ/gmol and the pre-exponential factor obtained is 3.56 1/ppm/s. It was found that for two of the passive oxidation tests, the reaction rates were higher than that predicted using the Arrhenius representation. The Loading Engine Condition also showed higher reaction kinetics than the NO2assisted kinetics. The engine and exhaust conditions as well as reaction rates obtained as part of this study are intended to be compared to the corresponding values obtained for a SCR-in-DPF substrate that is currently being studied at Michigan Tech as the next phase of study. The purpose of this comparison is to understand the difference in performance of both aftertreatment systems in light of their respective weights and volumes. The data obtained during this study is also being used to calibrate the 1-D CPF model at MTU. An introduction to the model is provided in this thesis, and the important variables of the study that are also used for model calibration are presented in the appropriate sections.

Download or read book AN EXPERIMENTAL INVESTIGATION INTO NO2 ASSISTED PASSIVE OXIDATION WITH AND WITHOUT UREA DOSING AND ACTIVE REGENERATION OF PARTICULATE MATTER FOR A SCR CATALYST ON A DPF written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : In this study, the combination of a DPF and SCR catalyst technology together on a single substrate was investigated for both loading and oxidation performance. Johnson Matthey together with Corning have developed the latest in diesel aftertreatment technologies with the SCRF®. To test the steady state oxidation performance of the pre-production system, a series of fourteen NO2 assisted passive oxidation (PO) tests (seven with urea injection, and seven without) and four active regeneration tests were performed on a 2013 Cummins ISB engine. The aftertreatment production system was modified to allow for experimental investigation into passive oxidation with and without urea dosing and active regeneration of particulate matter for a SCR on a DPF. The primary focus of this study was to carry out passive oxidation (with and without urea dosing), active regeneration and to measure species concentrations, PM mass retained, flowrates, substrate temperature distributions, pressure drop across the filter, and to determine the PM oxidation performance of the SCRF® and compare it to the baseline system. The data from this study will be used in the development and calibration of the MTU SCR-F model. The passive oxidation performance of the SCRF® was experimentally studied by oxidizing the accumulated PM at five distinct engine and exhaust conditions. These conditions were intended to span a wide range of standard space velocities (10.3-38.2 k/hr), substrate temperatures (273-377°C), and NO2 concentrations (117-821 ppm). The tests were repeated, once with and once without the injection of urea in the form of diesel exhaust fluid. Urea dosing was performed at a target ammonia to NOx ratio of 1.0 to investigate both the NOx reduction performance, as well as the effect it has on the PM passive oxidation performance. Each test began with an accelerated loading stage designed to accumulate 1.7±0.4 g/L. The two loading stages and the two post oxidation stages were intended not only to accumulate particulate matter for the passive oxidation stage, but also to characterize the difference to the production system. The study found that the SCRF® was able to achieve 88-99% reduction in NOx with urea for the steady state PO conditions studied and there was 51% lower PM reaction rates, and 60% lower rate constants k, compared to without urea injection. The thermal oxidation performance was studied by investigating three different active regeneration tests points above 500°C where the contribution of NO2 assisted oxidation was less than 10% based on other studies. The different target inlet temperatures 500°C, 550°C and 600°C were achieved through in cylinder post fuel dosing. From the conclusions of the study, it was found that the PM loading performance of the SCRF® was very similar to the production CPF, but resulted in a higher pressure drop across the filter. The PM passive oxidation performance of the system was significantly affected (51% lower reaction rates and 60% lower rate constants) by the injection of urea during the passive oxidation stage. The kinetics of PM passive oxidation using the standard Arrhenius model resulted in an activation energy of 99.2 kJ/gmol and pre exponential factor of 113.7 1/ppm/s without urea injection. Likewise, the kinetics of PM passive oxidation with urea dosing had an activation energy of 96.2 kJ/gmol and pre exponential factor of 23.1 1/ppm/s. Finally the kinetics of thermal oxidation were found to have an activation energy of 211.5 kJ/gmol and 2.52E+05 1/ppm/s for the pre exponential factor.

Download or read book Controlling Exposure to Diesel Emissions in Underground Mines written by Aleksandar D. Bugarski and published by SME. This book was released on 2012 with total page 503 pages. Available in PDF, EPUB and Kindle. Book excerpt: The use of diesel-powered equipment in underground mining operations provides many benefits to the industry. It also presents many challenges to the health and safety of workers as it is a significant source of submicrometer aerosols and noxious gases. This book was developed to assist the coal and metal/nonmetal underground mining industries in their efforts to reduce the exposure of workers to aerosols and gases from diesel-powered equipment. It includes information collected by researchers at the National Institute for Occupational Safety and Health/Office of Mine Safety and Health Research (NIOSH/OMSHR). Prior to the production of this text, the knowledge on this complex issue was fragmented. The goal of this volume is to make the information available in one easy-to-use reference. The book includes comprehensive, mine-specific programs for use by mechanics, mine ventilation engineers, industrial hygienists, mine managers, union health and safety representatives, and personnel responsible for the acquisition of diesel vehicles, engines, exhaust aftertreatment systems, fuels, and lubricants. The description of methods to reduce exposure to diesel aerosols includes curtailment of diesel particulate matter and gaseous emissions at their source, and controlling airborne pollutants with ventilation and personal protective equipment. This information should also help researchers in industry, government, and academia to identify areas that need to be addressed in future research and development efforts.

Download or read book Encyclopedia of Automotive Engineering written by and published by John Wiley & Sons. This book was released on 2015-03-23 with total page 3888 pages. Available in PDF, EPUB and Kindle. Book excerpt: Erstmals eine umfassende und einheitliche Wissensbasis und Grundlage für weiterführende Studien und Forschung im Bereich der Automobiltechnik. Die Encyclopedia of Automotive Engineering ist die erste umfassende und einheitliche Wissensbasis dieses Fachgebiets und legt den Grundstein für weitere Studien und tiefgreifende Forschung. Weitreichende Querverweise und Suchfunktionen ermöglichen erstmals den zentralen Zugriff auf Detailinformationen zu bewährten Branchenstandards und -verfahren. Zusammenhängende Konzepte und Techniken aus Spezialbereichen lassen sich so einfacher verstehen. Neben traditionellen Themen des Fachgebiets beschäftigt sich diese Enzyklopädie auch mit "grünen" Technologien, dem Übergang von der Mechanik zur Elektronik und den Möglichkeiten zur Herstellung sicherer, effizienterer Fahrzeuge unter weltweit unterschiedlichen wirtschaftlichen Rahmenbedingungen. Das Referenzwerk behandelt neun Hauptbereiche: (1) Motoren: Grundlagen; (2) Motoren: Design; (3) Hybrid- und Elektroantriebe; (4) Getriebe- und Antriebssysteme; (5) Chassis-Systeme; (6) Elektrische und elektronische Systeme; (7) Karosserie-Design; (8) Materialien und Fertigung; (9) Telematik. - Zuverlässige Darstellung einer Vielzahl von Spezialthemen aus dem Bereich der Automobiltechnik. - Zugängliches Nachschlagewerk für Jungingenieure und Studenten, die die technologischen Grundlagen besser verstehen und ihre Kenntnisse erweitern möchten. - Wertvolle Verweise auf Detailinformationen und Forschungsergebnisse aus der technischen Literatur. - Entwickelt in Zusammenarbeit mit der FISITA, der Dachorganisation nationaler Automobil-Ingenieur-Verbände aus 37 Ländern und Vertretung von über 185.000 Ingenieuren aus der Branche. - Erhältlich als stets aktuelle Online-Ressource mit umfassenden Suchfunktionen oder als Print-Ausgabe in sechs Bänden mit über 4.000 Seiten. Ein wichtiges Nachschlagewerk für Bibliotheken und Informationszentren in der Industrie, bei Forschungs- und Schulungseinrichtungen, Fachgesellschaften, Regierungsbehörden und allen Ingenieurstudiengängen. Richtet sich an Fachingenieure und Techniker aus der Industrie, Studenten höherer Semester und Studienabsolventen, Forscher, Dozenten und Ausbilder, Branchenanalysen und Forscher.

Download or read book Handbook of Diesel Engines written by Klaus Mollenhauer and published by Springer Science & Business Media. This book was released on 2010-06-22 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt: This machine is destined to completely revolutionize cylinder diesel engine up through large low speed t- engine engineering and replace everything that exists. stroke diesel engines. An appendix lists the most (From Rudolf Diesel’s letter of October 2, 1892 to the important standards and regulations for diesel engines. publisher Julius Springer. ) Further development of diesel engines as economiz- Although Diesel’s stated goal has never been fully ing, clean, powerful and convenient drives for road and achievable of course, the diesel engine indeed revolu- nonroad use has proceeded quite dynamically in the tionized drive systems. This handbook documents the last twenty years in particular. In light of limited oil current state of diesel engine engineering and technol- reserves and the discussion of predicted climate ogy. The impetus to publish a Handbook of Diesel change, development work continues to concentrate Engines grew out of ruminations on Rudolf Diesel’s on reducing fuel consumption and utilizing alternative transformation of his idea for a rational heat engine fuels while keeping exhaust as clean as possible as well into reality more than 100 years ago. Once the patent as further increasing diesel engine power density and was filed in 1892 and work on his engine commenced enhancing operating performance.

Download or read book Modeling the Filtration Oxidation and Pressure Drop Characteristics of a Catalyzed Particulate Filter During Active Regeneration written by Rohith Arasappa and published by . This book was released on 2008 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Diesel Emissions and Their Control 2nd Edition written by W. Addy Majewski and published by SAE International. This book was released on 2023-12-20 with total page 1135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Engineers, applied scientists, students, and individuals working to reduceemissions and advance diesel engine technology will find the secondedition of Diesel Emissions and Their Control to be an indispensablereference. Whether readers are at the outset of their learning journey orseeking to deepen their expertise, this comprehensive reference bookcaters to a wide audience.In this substantial update to the 2006 classic, the authors have expandedthe coverage of the latest emission technologies. With the industryevolving rapidly, the book ensures that readers are well-informed aboutthe most recent advances in commercial diesel engines, providing acompetitive edge in their respective fields. The second edition has alsostreamlined the content to focus on the most promising technologies.This book is rooted in the wealth of information available on DieselNet.com, where the “Technology Guide” papers offer in-depth insights. Eachchapter includes links to relevant online materials, granting readers accessto even more expertise and knowledge.The second edition is organized into six parts, providing a structuredjourney through every aspect of diesel engines and emissions control: Part I: A foundational exploration of the diesel engine, combustion, andessential subsystems. Part II: An in-depth look at emission characterization, health andenvironmental impacts, testing methods, and global regulations. Part III: A comprehensive overview of diesel fuels, covering petroleumdiesel, alternative fuels, and engine lubricants. Part IV: An exploration of engine efficiency and emission controltechnologies, from exhaust gas recirculation to engine control. Part V: The latest developments in diesel exhaust aftertreatment,encompassing catalyst technologies and particulate filters. Part VI: A historical journey through the evolution of dieselengine technology, with a focus on heavy-duty engines in the NorthAmerican market. (ISBN 9781468605693, ISBN 9781468605709, ISBN 9781468605716, DOI: 10.4271/9781468605709)

Download or read book Diesel Engine System Design written by Qianfan Xin and published by Elsevier. This book was released on 2011-05-26 with total page 1087 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diesel Engine System Design links everything diesel engineers need to know about engine performance and system design in order for them to master all the essential topics quickly and to solve practical design problems. Based on the author's unique experience in the field, it enables engineers to come up with an appropriate specification at an early stage in the product development cycle. Links everything diesel engineers need to know about engine performance and system design featuring essential topics and techniques to solve practical design problems Focuses on engine performance and system integration including important approaches for modelling and analysis Explores fundamental concepts and generic techniques in diesel engine system design incorporating durability, reliability and optimization theories

Download or read book A Study of the Filtration and Regeneration Characteristics of a Catalyzed Wall flow Diesel Particulate Filter written by Cuong T. Huynh and published by . This book was released on 2002 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Application of Thermal Catalytic and Non thermal Plasma Oxidation Processes to Enhance NO NO2oxidation in the Engine Exhaust and Improve DPF Regeneration at Lower Temperatures written by Jun Jie Chong and published by . This book was released on 2012 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Diesel Particulate Emissions Landmark Research 1994 2001 written by John H Johnson and published by SAE International. This book was released on 2002-02-20 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: The need for manufacturers to meet U.S. Environmental Protection Agency (EPA) mobile source diesel emissions standards for on-highway light duty and heavy duty vehicles has been the driving force for the control of diesel particulate and NOx emissions reductions. Diesel Particulate Emissions: Landmark Research 1994-2001 contains the latest research and development findings that will help guide engineers to achieve low particulate emissions from future engines. Based on extensive SAE literature from the past seven years, the 45 papers in this book have been selected from the SAE Transactions Journals.

Download or read book Automotive Emissions Regulations and Exhaust Aftertreatment Systems written by John Kasab and published by SAE International. This book was released on 2020-08-31 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this book is to present a fundamental development of the science and engineering underlying the design of exhaust aftertreatment systems for automotive internal combustion engines. No pre-requisite knowledge of the field is required: our objective is to acquaint the reader, whom we expect to be new to the field of emissions control, with the underlying principles, control methods, common problems, and fuel effects on catalytic exhaust aftertreatment devices. We do this in hope that they can better understand the previous and current generations of emissions control, and improve upon them. This book is designed for the engineer, researcher, designer, student, or any combination of those, who is concerned with the control of automotive exhaust emissions. It includes discussion of theory and fundamentals applicable to hardware development.

Download or read book The Institute of Energy s Second International Conference on COMBUSTION EMISSIONS CONTROL written by The Institute of Energy and published by Elsevier. This book was released on 2013-10-22 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt: Approx.410 pages

Download or read book Annual Index abstracts of SAE Technical Papers written by and published by . This book was released on 2007 with total page 1218 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Catalytic Air Pollution Control written by Ronald M. Heck and published by John Wiley & Sons. This book was released on 2016-03-07 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: Catalytic Air Pollution Control: Commercial Technology is the primary source for commercial catalytic air pollution control technology, offering engineers a comprehensive account of all modern catalytic technology. This Third Edition covers all the new advances in technology in automotive catalyst control technology, diesel engine catalyst control technology, small engine catalyst control technology, and alternate sustainable fuels for auto and diesel.

Download or read book Diesel Particulate Filter Technology written by Timothy V Johnson and published by SAE International. This book was released on 2007-03-28 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Until recently, the complexity of the Diesel Particulate Filter (DPF) system has hindered its commercial success. Stringent regulations of diesel emissions has lead to advancements in this technology, therefore mainstreaming the use of DPFs in light- and heavy-duty diesel filtration applications. This book covers the latest and most important research in DPF systems, focusing mainly on the advancements of the years 2002-2006. Editor Timothy V. Johnson selected the top 29 SAE papers covering the most significant research in this technology.