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Author : Dieter Bender
Publisher :
ISBN 13 :
Total Pages : 140 pages
Book Rating : 4.:/5 (81 download)
Download or read book Modeling & Analysis of PM Sensor Signals for Diesel Particulate Filter Health Diagnosis written by Dieter Bender and published by . This book was released on 2012 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mengting Yu
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (954 download)
Download or read book Modeling and Analysis of Particulate Matter Deposition and Regeneration in a Diesel Particulate Filter written by Mengting Yu and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Diesel engines are widely used because of their high efficiency and low “greenhouse gas” emission. The particulate matter (PM) emitted by a diesel engine is collected and then burned in a diesel particulate filter (DPF). Analysis and modeling works have been done in this research to provide insight on optimization of the DPF design and operating conditions to achieve low pressure drop across the filter to decrease fuel consumption and low peak temperature during regeneration to avoid filter melting, cracking, and/or catalyst deactivation. Limiting models of the 1-D two-channel DPF model are analyzed. Analytical predictions and physical insight on the filtration velocity, pressure drop, heat transfer, light-off and regeneration in a DPF are obtained. The hydraulic analysis enables an efficient optimization of the DPF that lead to a more uniform PM deposition profile and a decrease of the pressure drop. The heat transfer, light-off and regeneration analysis enable estimations of the DPF heat-up time, the speed and width of the temperature front, the light-off temperature and time, and the peak regeneration temperature. New DPF regeneration procedures are proposed to limit the maximum local temperature rise. In various cases a DPF is connected by a wide-angled cone (diffuser) to the engine exhaust pipe. A 2-D axisymmetric PM deposition and regeneration model is developed to investigate the impact of the inlet cone on the deposition rate and the regeneration temperature as well as on the transient inlet velocity distribution among the various DPF channels. The highest regeneration temperature and thermal stress when using an inlet cone may be quite higher than when it is absent. A major technological challenge in the regeneration of the ceramic cordierite filter is that a sudden decrease of the engine load, referred to as Drop to Idle (DTI), may create a transient temperature peak much higher than under either the initial or final stationary feed conditions. This excessive transient temperature rise may cause local melting or cracking of the ceramic filter. Suggestions on how to limit the peak temperature rise following a DTI are provided through numerous simulations of the 1-D and 2-D DPF regeneration models.
Author : Desiree Y. Smith
Publisher :
ISBN 13 : 9781369300802
Total Pages : 85 pages
Book Rating : 4.3/5 (8 download)
Download or read book Diesel Particulate Matter Sensor written by Desiree Y. Smith and published by . This book was released on 2016 with total page 85 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Environmental Protection Agency and European Commission are requiring in-situ on-board diagnostic systems to increase accuracy in monitoring nitrous oxides and particulate matter vehicle emissions. Particulate Matter (PM) sensors are a derivative of this regulation and have been implemented to assess diesel particulate filter failure, as well as solid particle number. The design of PM sensors is varied by company (e.g., Honeywell, Bosch, Emisense, and Delphi) in addition to the applied method. The method of investigation in this study is electrical charging and the capacity for corona discharge generation.
Author : Timothy V Johnson
Publisher : SAE International
ISBN 13 : 0768096340
Total Pages : 374 pages
Book Rating : 4.7/5 (68 download)
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.
Author : Yi Zheng
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (794 download)
Download or read book Diesel Particulate Matter Dispersion Analysis in Underground Metal/nonmetal Mines Using Computational Fluid Dynamics written by Yi Zheng and published by . This book was released on 2011 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Diesel Particulate Matter (DPM) is a natural by-product from operating diesel engines. Since diesel power is a major source of energy for mining operations today, the adverse health effects of DPM are of a great concern. To thoroughly resolve DPM problems, it is critical that DPM propagation characteristics be understood to arrive at a sensible and practical method for addressing DPM-related issues. To achieve this, a computational fluid dynamics (CFD) method is used to simulate DPM dispersion and to predict its concentration distribution. Industrial field studies were reconstructed to evaluate the possibility of different CFD models. Experiments were also carried out in the Missouri University of Science and Technology (MISSOURI S & T) Experimental Mine to validate the selected CFD model. Based on the verified CFD model, the DPM dispersion pattern in both a straight entry and a dead-end entry were studied. The effect of variables (for example, different mining operations, inclination of dead-end entry, buoyancy effects, orientation of the tailpipe and a vehicle's motion) on DPM distribution were systematically simulated to reveal high DPM regions in similar real mining scenarios. Different main airflow speeds, diesel particulate filter (DPF), and local ventilation devices were evaluated for effectiveness in clearing the DPM plume. This research can provide a means for identifying high DPM-level areas which can be used in miner health and safety training. It can also improve the understanding of the impacts of various control measures on DPM distribution which can result in an objective decision-making scheme for mining engineers to choose individual or a combination of control strategies to upgrade a miner's working environment"--Abstract, leaf iii
Author : Grigorios Koltsakis
Publisher :
ISBN 13 :
Total Pages : 61 pages
Book Rating : 4.:/5 (833 download)
Download or read book Catalyzed Diesel Particulate Filter Modeling written by Grigorios Koltsakis and published by . This book was released on 2013 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Di Huang
Publisher :
ISBN 13 :
Total Pages : 342 pages
Book Rating : 4.:/5 (76 download)
Download or read book Modeling of Diesel Particulate Filter Filtration and Regeneration for Transient Driving Schedules written by Di Huang and published by . This book was released on 2011 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 95 pages
Book Rating : 4.:/5 (131 download)
Download or read book Estimating Transport of Diesel Particulate Emissions in the Portland Metro Using Lagrangian-based Dispersion Modeling written by and published by . This book was released on 2022 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: Air pollution from diesel combustion is a well-known and serious problem which adversely impacts human and environmental health throughout the world. One of the primary pollutants of concern from diesel combustion are the solid particles formed as a byproduct of the incomplete combustion of the diesel, also known as diesel particulate matter. As a result of the ubiquitous use of diesel-fired engines in urban environments, understanding the transport of diesel particulate matter from the exhaust is paramount in assessing human exposure to this toxic pollutant. Air dispersion modeling is one method to study how diesel particulate matter is transported and where the greatest risk of exposure can be found. Emissions of diesel particulate matter were modeled for the Portland metropolitan area by the Oregon Department of Environmental Quality (DEQ) using the CALPUFF model. Diesel particulate matter was modeled in 2005 (PATA) and again in 2012 (PATS) by the DEQ. The purpose of this study is to update and enhance the model framework from these two studies to improve the current understanding of exposure to diesel particulate matter in the Portland area. Updates to the model framework include the implementation of a more current meteorological dataset and emissions inventory, and enhancements include using a higher resolution meteorology, and the addition of a new source category, truck distribution centers. Model concentrations from this study underwent a quality assurance (QA) and validation process using ambient monitored black carbon data from monitors in the Portland area. Results of the QA and validation process showed that the enhancements made for this study resulted in modeled concentrations that aligned closer to the monitored concentrations relative to the 2005 and 2012 studies. Using the updates to the model framework from this study, the DEQ can continue to develop future iterations of the PATS study to better understand diesel particulate matter exposure in the Portland area.
Author : Society Of Automotive Engineers
Publisher :
ISBN 13 : 9780768009163
Total Pages : 868 pages
Book Rating : 4.0/5 (91 download)
Download or read book Annual Index/abstracts of Sae Technical Papers, 2000 written by Society Of Automotive Engineers and published by . This book was released on 2001 with total page 868 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Fathi Zereini
Publisher : Springer Science & Business Media
ISBN 13 : 3642122787
Total Pages : 663 pages
Book Rating : 4.6/5 (421 download)
Download or read book Urban Airborne Particulate Matter written by Fathi Zereini and published by Springer Science & Business Media. This book was released on 2011-02-16 with total page 663 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the most up-to-date research and information regarding the origin, chemistry, fate and health impacts of airborne particulate matter in urban areas, a topic which has received a great deal of attention in recent years due to documented relationships between exposure and health effects such as asthma. With internationally recognised researchers and academics presenting their work and key concepts and approaches from a variety of disciplines, including environmental and analytical chemistry, biology, toxicology, mineralogy and the geosciences, this book addresses the topic of urban airborne particulate matter in a comprehensive, multidisciplinary manner. Topics and research addressed in the book range from common methodological approaches used to sample and analyse the composition of airborne particulates to our knowledge regarding their potential to impact human health and the various policy approaches taken internationally to regulate particulate matter levels.
Author : U.s. Environmental Protection Agency
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781547052585
Total Pages : 502 pages
Book Rating : 4.0/5 (525 download)
Download or read book America's Children and the Environment written by U.s. Environmental Protection Agency and published by Createspace Independent Publishing Platform. This book was released on 2017-05-31 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt: "America's Children and the Environment (ACE)" is EPA's report presenting data on children's environmental health. ACE brings together information from a variety of sources to provide national indicators in the following areas: Environments and Contaminants, Biomonitoring, and Health. Environments and Contaminants indicators describe conditions in the environment, such as levels of air pollution. Biomonitoring indicators include contaminants measured in the bodies of children and women of child-bearing age, such as children's blood lead levels. Health indicators report the rates at which selected health outcomes occur among U.S. children, such as the annual percentage of children who currently have asthma. Accompanying each indicator is text discussing the relevance of the issue to children's environmental health and describing the data used in preparing the indicator. Wherever possible, the indicators are based on data sources that are updated in a consistent manner, so that indicator values may be compared over time.
Author : Konrad Reif
Publisher : Springer
ISBN 13 : 3658039817
Total Pages : 381 pages
Book Rating : 4.6/5 (58 download)
Download or read book Diesel Engine Management written by Konrad Reif and published by Springer. This book was released on 2014-07-18 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference book provides a comprehensive insight into todays diesel injection systems and electronic control. It focusses on minimizing emissions and exhaust-gas treatment. Innovations by Bosch in the field of diesel-injection technology have made a significant contribution to the diesel boom. Calls for lower fuel consumption, reduced exhaust-gas emissions and quiet engines are making greater demands on the engine and fuel-injection systems.
Author : U.S. Nuclear Regulatory Commission
Publisher :
ISBN 13 :
Total Pages : 48 pages
Book Rating : 4.:/5 (319 download)
Download or read book NUREG/CR. written by U.S. Nuclear Regulatory Commission and published by . This book was released on 1977 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Richard Viskup
Publisher :
ISBN 13 : 178985248X
Total Pages : 202 pages
Book Rating : 4.7/5 (898 download)
Download or read book Diesel and Gasoline Engines written by Richard Viskup and published by . This book was released on 2020-02 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: The internal combustion engine was invented around 1790 by various scientists and engineers worldwide. Since then the engines have gone through many modifications and improvements. Today, different applications of engines form a significant technological importance in our everyday lives, leading to the evolution of our modern civilization. The invention of diesel and gasoline engines has definitely changed our lifestyles as well as shaped our priorities. The current engines serve innumerable applications in various types of transportation, in harsh environments, in construction, in diverse industries, and also as back-up power supply systems for hospitals, security departments, and other institutions. However, heavy duty or light duty engines have certain major disadvantages, which are well known to everyone. With the increasing usage of diesel and gasoline engines, and the constantly rising number of vehicles worldwide, the main concern nowadays is engine exhaust emissions. This book looks at basic phenomena related to diesel and gasoline engines, combustion, alternative fuels, exhaust emissions, and mitigations.
Author :
Publisher :
ISBN 13 :
Total Pages : 648 pages
Book Rating : 4.F/5 ( download)
Download or read book Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards written by and published by . This book was released on 2006 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Center for Environmental Assessment (Research Triangle Park, N.C.)
Publisher :
ISBN 13 :
Total Pages : 1100 pages
Book Rating : 4.3/5 ( download)
Download or read book Air Quality Criteria for Particulate Matter written by National Center for Environmental Assessment (Research Triangle Park, N.C.) and published by . This book was released on 1996 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R.P. Overend
Publisher : Springer Science & Business Media
ISBN 13 : 9400949324
Total Pages : 1155 pages
Book Rating : 4.4/5 (9 download)
Download or read book Fundamentals of Thermochemical Biomass Conversion written by R.P. Overend and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 1155 pages. Available in PDF, EPUB and Kindle. Book excerpt: Throughout the world many projects have been underway to investigate the conversion of renewable biomass into energy and synthetic fuels by thermo chemical methods such as combustion, pyrolysis, gasification and lique faction. While many of these represent prior art used during the early 20th century, the recent decade since the 1970s oil shock has immeasurably increased the knowledge base for such processes. Much of the new knowledge has been gained by persons who were not trained in classical wood chemistry and there have not yet been many attempts to synthesize the knowledge into a corpus of systematic information. To bring this about the International Energy Agency's Forestry Energy collaboration, the Gas Research Institute, the National Research Council of Canada and the US Department of Energy jointly sponsored a conference on the Fundamentals of Thermochemical Biomass Conversion in Estes Park, Colorado which was held on October 18-22, 1982. The Conference, which was structured around invited plenary papers and contributions from researchers, served as the basis for the papers in this volume which reflect the substantial conclusions of the Conference. During the planning for the Conference, it was realized by the editors in their capacity as Co-chairmen that a major problem in biomass research was the lack of reproducibility between reported experiments and their inter comparison on account of the heterogeneity of biomass materials. A well known wood chemist, George M.
