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| Author | : Wenbo Sui |
| Publisher | : |
| Total Pages | : 280 |
| Release | : 2018 |
| Genre | : |
| ISBN | : |
| Author | : W. Addy Majewski |
| Publisher | : SAE International |
| Total Pages | : 1135 |
| Release | : 2023-12-20 |
| Genre | : Technology & Engineering |
| ISBN | : 1468605704 |
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)
| Author | : B. Ashok |
| Publisher | : Elsevier |
| Total Pages | : 488 |
| Release | : 2021-11-09 |
| Genre | : Technology & Engineering |
| ISBN | : 0128242280 |
NOx Emission Control Technologies in Stationary and Automotive Internal Combustion Engines: Approaches Toward NOx Free Automobiles presents the fundamental theory of emission formation, particularly the oxides of nitrogen (NOx) and its chemical reactions and control techniques. The book provides a simplified framework for technical literature on NOx reduction strategies in IC engines, highlighting thermodynamics, combustion science, automotive emissions and environmental pollution control. Sections cover the toxicity and roots of emissions for both SI and CI engines and the formation of various emissions such as CO, SO2, HC, NOx, soot, and PM from internal combustion engines, along with various methods of NOx formation. Topics cover the combustion process, engine design parameters, and the application of exhaust gas recirculation for NOx reduction, making this book ideal for researchers and students in automotive, mechanical, mechatronics and chemical engineering students working in the field of emission control techniques. Covers advanced and recent technologies and emerging new trends in NOx reduction for emission control Highlights the effects of exhaust gas recirculation (EGR) on engine performance parameters Discusses emission norms such as EURO VI and Bharat stage VI in reducing global air pollution due to engine emissions
| Author | : Pingen Chen |
| Publisher | : |
| Total Pages | : 290 |
| Release | : 2014 |
| Genre | : |
| ISBN | : |
The application of modern Diesel engines in automotive industry has been widely recognized for reasons of their distinguished performances on fuel economy, durability, and reliability. Meanwhile, NOx and particulate matters (PM) emissions have been the main concerns in the evolution of Diesel engines as more and more stringent emission standards have been legislated against Diesel engine emissions worldwide. In addition, as the Greenhouse gas emissions are receiving more and more concerns due to global warming issues, the demand of fuel economy improvement is increasing significantly. The objective of this research is to develop systematic control methodologies, based on fundamental insight into the system characteristics, to improve the overall fuel economy and emission performance of integrated Diesel engine and aftertreatment systems. The test platform of this research is a medium-duty Diesel engine equipped with high-pressure common-rail fuel injection system, dual-loop exhaust gas recirculation systems, variable geometry turbocharger system, and an integrated aftertreatment system including a Diesel oxidation catalyst (DOC), Diesel particulate filter (DPF), and two-catalyst selective catalytic reduction (SCR) system. The topics of this research fall into two groups. The first group focuses on the modeling, estimation, and control of integrated aftertreatment systems based on the interactions between the subsystems with the objective of maintaining low tailpipe emissions at low cost. Topics covered in this group include the modeling and observer-based estimations for oxygen concentration and thermal behaviors across the DOC and DPF, state estimator design for SCR system using production NOx sensor measurements, and the active NO/NO2 ratio controller design for DOC and DPF to improve the SCR performance. The second group mainly concentrates on the modeling, estimation, and control of integrated engine-aftertreatment systems grounded on the interactions between engine and aftertreatment systems to simultaneously maintain high fuel efficiency and low tailpipe emissions. Topics contained in this group include the air-fraction modeling and estimation for Diesel engines coupled with aftertreatment systems during normal operations and active DPF regenerations, control-oriented thermal model for integrated Diesel engine and aftertreatment system active thermal management, and integrated Diesel engine and aftertreatment active NOx emissions control for fuel economy improvement. The control-oriented models, observers, and controllers of integrated Diesel engine and aftertreatment systems proposed in this research, when applied in automotive fields, have potentials of improving the engine fuel efficiency, reliability, and reducing tailpipe emissions in systematic, real-time, and cost-effective manners.
| Author | : |
| Publisher | : |
| Total Pages | : 154 |
| Release | : 2007 |
| Genre | : Automobiles |
| ISBN | : |
Presents the results of a 2,000-hour test of an emissions control system consisting of a nitrogen oxides adsorber catalyst in combination with a diesel particle filter, advanced fuels, and advanced engine controls in an SUV/pick-up truck vehicle platform.
| Author | : Avra Brahma |
| Publisher | : |
| Total Pages | : |
| Release | : 2005 |
| Genre | : Diesel motor |
| ISBN | : |
Abstract: Over the past decade, modern technologies such as Direct Injection (DI), Exhaust Gas Recirculation (EGR), Variable Geometry Turbocharging (VGT), and most recently, High Pressure Common Rail (HPCR) fuel injection have narrowed the gap between Diesel engines and Spark-Ignition (SI) engines in terms of environmental impact. These improvements in Diesel engine technology are accompanied by several challenges. The modern diesel engine is a complex nonlinear system that must be controlled optimally to ensure that it meets the environmental regulations while maintaining its performance. One-loop-at-a-time tuning is no longer effective due to the complexity of the system. Currently, a significant part of time is spent in the optimization of engine performance, a luxury industry cannot afford in the increasingly competitive scenario. For this reason, the automotive industry is realizing the significance of model based and multivariate control. Fuel path control has mostly been of a feedforward nature due to lack of appropriate sensors. With sensors for emissions such as NOX beginning to become commercially viable, a need has arisen to formulate control paradigms that incorporate the emission optimization problem into the feedback control framework. Methodologies for modeling and feedback control of the NOX-BSFC trade-off are explored. Two different types of subsystems of a common high-speed Diesel engine are modeled based on the chosen input parameters. Linear models for the open-loop torque and NOX dynamics are proposed for each subsystem based on models published in the literature. These models are identified and demonstrated to be capable of reproducing essential system properties. A generic control paradigm is proposed that enables the explicit incorporation of the trade-offs between different output variables directly within the control framework. Two different instances of a constrained NOX-BSFC trade-off are demonstrated to exist in a Diesel engine. The first example relates to the existence of a NOX-BSFC trade-off in the context of torque control in the fuel path. The second example demonstrates the existence of a similar trade-off in the context of air flow control. The above control paradigm is applied to each example for the feedback control of the NOX-BSFC trade-off.
| Author | : W. F. Marshall |
| Publisher | : |
| Total Pages | : 22 |
| Release | : 1971 |
| Genre | : Air |
| ISBN | : |
| Author | : G. Amba Prasad Rao |
| Publisher | : CRC Press |
| Total Pages | : 448 |
| Release | : 2020-06-09 |
| Genre | : Science |
| ISBN | : 1000448991 |
This new volume covers the important issues related to environmental emissions from SI and CI engines as well as their formation and various pollution mitigation techniques. The book addresses aspects of improvements in engine modification, such as design modifications for enhanced performance, both with conventional fuels as well as with new and alternative fuels. It also explores some new combustion concepts that will help to pave the way for complying with new emission concepts. Alternative fuels are addressed in this volume to help mitigate harmful emissions, and alternative power sources for automobiles are also discussed briefly to cover the switch over from fueled engines to electrics, including battery-powered electric vehicles and fuel cells. The authors explain the different technologies available to date to overcome the limitations of conventional prime movers (fueled by both fossil fuels and alternative fuels). Topics examined include: • Engine modifications needed to limit harmful emissions • The use of engine after-treatment devices to contain emissions • The development of new combustion concepts • Adoption of alternative fuels in existing engines • Switching over to electrics—advantages and limitations • Specifications of highly marketed automobiles • Emission measurement methods
| Author | : Hai Wu |
| Publisher | : |
| Total Pages | : |
| Release | : 2011 |
| Genre | : |
| ISBN | : |
Fuel efficiency and emission reductions are the two consistent drivers for internal combustion engine development for both on-highway and off-road vehicles. Advanced combustion technologies are proposed for the improvement of fuel consumption and reduction of harmful gas production inside the cylinder in laboratory engines. Outside cylinder technologies and after-treatment are the alternatives for a production engine to meet the stringent emission standards. Advanced control technologies play important roles in the realization of new technologies. This research was aimed at investigating possible techniques and feasible methods of implementation to reduce diesel engine emissions to meet the more stringent Tier 4 standards. In this study, two technologies are studied for off-road diesel engine NOx emission reductions: stoichiometric combustion ignition (SCI) and lean NOx trap (LNT). The concept of the stoichiometric compression ignition (SCI) engine was investigated for implementation in a turbocharged diesel engine through co-simulation. At first, an integrated environment for 1D engine modeling with control function was proposed for a SCI performance evaluation and control implementation. The SCI engine has been evaluated by Constant Speed Load Acceptance tests under steady-state and transient conditions. For SCI implementations, basic controls have been designed including air-fuel ratio (AFR) control, torque limiting control and idle speed control. The proposed control strategies have been verified with 1D detail models in the integrated environments. Further, the Mean Value Engine Model (MVEM) is proposed for advanced model based control design. The SCI engine subsystems are modeled using an orifice constrain model for throttle, turbine, and wastegate; filling and emptying model for intake and exhaust manifolds; rotational dynamic for engine camshaft and turbocharger shift, air-charging model and exhaust properties regressed by the data from integrated simulation at different engine operating conditions. The MVEM was implemented in Matlab/Simulink for verification. Modular and system verification was conducted for steady-state and transient state consistency with the 1D detail model. The results are promising, but the whole system needs further tuning for dynamic control design. The lean-NOx trap, as an alternative after-treatment for NOx control, has been studied for generic diesel engine emission control. Based on experimental data, an improved NOx adsorption model is proposed for integrated engine control and optimization.
| Author | : Malcolm Latarche |
| Publisher | : Butterworth-Heinemann |
| Total Pages | : 958 |
| Release | : 2020-12-01 |
| Genre | : Technology & Engineering |
| ISBN | : 0081027850 |
Pounder’s Marine Diesel Engines and Gas Turbines, Tenth Edition, gives engineering cadets, marine engineers, ship operators and managers insights into currently available engines and auxiliary equipment and trends for the future. This new edition introduces new engine models that will be most commonly installed in ships over the next decade, as well as the latest legislation and pollutant emissions procedures. Since publication of the last edition in 2009, a number of emission control areas (ECAs) have been established by the International Maritime Organization (IMO) in which exhaust emissions are subject to even more stringent controls. In addition, there are now rules that affect new ships and their emission of CO2 measured as a product of cargo carried. Provides the latest emission control technologies, such as SCR and water scrubbers Contains complete updates of legislation and pollutant emission procedures Includes the latest emission control technologies and expands upon remote monitoring and control of engines
