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Author : Moataz Ali
Publisher :
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.:/5 (89 download)
Download or read book Generalized Engine Systems Modeling, Methodology and Validation written by Moataz Ali and published by . This book was released on 2003 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lino Guzzella
Publisher : Springer Science & Business Media
ISBN 13 : 3662080036
Total Pages : 303 pages
Book Rating : 4.6/5 (62 download)
Download or read book Introduction to Modeling and Control of Internal Combustion Engine Systems written by Lino Guzzella and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 303 pages. Available in PDF, EPUB and Kindle. Book excerpt: Internal combustion engines still have a potential for substantial improvements, particularly with regard to fuel efficiency and environmental compatibility. These goals can be achieved with help of control systems. Modeling and Control of Internal Combustion Engines (ICE) addresses these issues by offering an introduction to cost-effective model-based control system design for ICE. The primary emphasis is put on the ICE and its auxiliary devices. Mathematical models for these processes are developed in the text and selected feedforward and feedback control problems are discussed. The appendix contains a summary of the most important controller analysis and design methods, and a case study that analyzes a simplified idle-speed control problem. The book is written for students interested in the design of classical and novel ICE control systems.
Author :
Publisher :
ISBN 13 :
Total Pages : 902 pages
Book Rating : 4.F/5 ( download)
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2007 with total page 902 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dirk Brade
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (25 download)
Download or read book A Generalized Process for the Verification and Validation of Models and Simulation Results written by Dirk Brade and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lars Eriksson
Publisher : John Wiley & Sons
ISBN 13 : 1118479998
Total Pages : 589 pages
Book Rating : 4.1/5 (184 download)
Download or read book Modeling and Control of Engines and Drivelines written by Lars Eriksson and published by John Wiley & Sons. This book was released on 2014-04-07 with total page 589 pages. Available in PDF, EPUB and Kindle. Book excerpt: Control systems have come to play an important role in the performance of modern vehicles with regards to meeting goals on low emissions and low fuel consumption. To achieve these goals, modeling, simulation, and analysis have become standard tools for the development of control systems in the automotive industry. Modeling and Control of Engines and Drivelines provides an up-to-date treatment of the topic from a clear perspective of systems engineering and control systems, which are at the core of vehicle design. This book has three main goals. The first is to provide a thorough understanding of component models as building blocks. It has therefore been important to provide measurements from real processes, to explain the underlying physics, to describe the modeling considerations, and to validate the resulting models experimentally. Second, the authors show how the models are used in the current design of control and diagnosis systems. These system designs are never used in isolation, so the third goal is to provide a complete setting for system integration and evaluation, including complete vehicle models together with actual requirements and driving cycle analysis. Key features: Covers signals, systems, and control in modern vehicles Covers the basic dynamics of internal combustion engines and drivelines Provides a set of standard models and includes examples and case studies Covers turbo- and super-charging, and automotive dependability and diagnosis Accompanied by a web site hosting example models and problems and solutions Modeling and Control of Engines and Drivelines is a comprehensive reference for graduate students and the authors’ close collaboration with the automotive industry ensures that the knowledge and skills that practicing engineers need when analysing and developing new powertrain systems are also covered.
Author :
Publisher :
ISBN 13 :
Total Pages : 704 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter Kelly Senecal
Publisher :
ISBN 13 :
Total Pages : 360 pages
Book Rating : 4.:/5 (89 download)
Download or read book Development of a Methodology for Internal Combustion Engine Design Using Multi-dimensional Modeling with Validation Through Experiments written by Peter Kelly Senecal and published by . This book was released on 2000 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 38 pages
Book Rating : 4.:/5 (227 download)
Download or read book An Integrated Approach to Conversion, Verification, Validation and Integrity of AFRL Generic Engine Model and Simulation (Postprint). written by and published by . This book was released on 2007 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modern airborne weapons systems face increasingly stringent demands for improved performance and lower cost of ownership. The key to attaining the first of these demands is increased sub-systems integration, which leverages improved component performance to make even greater improvements in overall weapons system capability. Research is essential to gaining a fundamental understanding of the behavior and control of these highly integrated systems. Progress towards meeting the affordability demands for these systems is also being closely scrutinized. Recognition and control of ownership costs has become increasingly difficult in the face of increasing systems complexity. It may be possible to reduce the amount of physical engine test required in a typical gas turbine engine development program through the use of simulation and modeling techniques in a virtual engine test cell. However, in order to establish the credibility of a simulation and modeling approach to virtual engine test, carefully documented verification and validation (V & V) activities must be undertaken during model development.
Author : Avinash Kumar Agarwal
Publisher : Springer Nature
ISBN 13 : 9811686181
Total Pages : 368 pages
Book Rating : 4.8/5 (116 download)
Download or read book Engine Modeling and Simulation written by Avinash Kumar Agarwal and published by Springer Nature. This book was released on 2021-12-16 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on the simulation and modeling of internal combustion engines. The contents include various aspects of diesel and gasoline engine modeling and simulation such as spray, combustion, ignition, in-cylinder phenomena, emissions, exhaust heat recovery. It also explored engine models and analysis of cylinder bore piston stresses and temperature effects. This book includes recent literature and focuses on current modeling and simulation trends for internal combustion engines. Readers will gain knowledge about engine process simulation and modeling, helpful for the development of efficient and emission-free engines. A few chapters highlight the review of state-of-the-art models for spray, combustion, and emissions, focusing on the theory, models, and their applications from an engine point of view. This volume would be of interest to professionals, post-graduate students involved in alternative fuels, IC engines, engine modeling and simulation, and environmental research.
Author : John L. Lahti
Publisher :
ISBN 13 :
Total Pages : 214 pages
Book Rating : 4.:/5 (89 download)
Download or read book Engine Control Using Real Time Combustion and Compressible Gas Flow Models written by John L. Lahti and published by . This book was released on 2004 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Matthew O. Greer
Publisher :
ISBN 13 :
Total Pages : 170 pages
Book Rating : 4.:/5 (89 download)
Download or read book Effect of Sensor Uncertainty on the Control of EGR for Diesel Engines Based on Dynamic Matlab/Simulink Engine Models written by Matthew O. Greer and published by . This book was released on 2007 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gunnar Stiesch
Publisher : Springer Science & Business Media
ISBN 13 : 3662087901
Total Pages : 293 pages
Book Rating : 4.6/5 (62 download)
Download or read book Modeling Engine Spray and Combustion Processes written by Gunnar Stiesch and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: The utilization of mathematical models to numerically describe the performance of internal combustion engines is of great significance in the development of new and improved engines. Today, such simulation models can already be viewed as standard tools, and their importance is likely to increase further as available com puter power is expected to increase and the predictive quality of the models is constantly enhanced. This book describes and discusses the most widely used mathematical models for in-cylinder spray and combustion processes, which are the most important subprocesses affecting engine fuel consumption and pollutant emissions. The relevant thermodynamic, fluid dynamic and chemical principles are summarized, and then the application of these principles to the in-cylinder processes is ex plained. Different modeling approaches for the each subprocesses are compared and discussed with respect to the governing model assumptions and simplifica tions. Conclusions are drawn as to which model approach is appropriate for a specific type of problem in the development process of an engine. Hence, this book may serve both as a graduate level textbook for combustion engineering stu dents and as a reference for professionals employed in the field of combustion en gine modeling. The research necessary for this book was carried out during my employment as a postdoctoral scientist at the Institute of Technical Combustion (ITV) at the Uni versity of Hannover, Germany and at the Engine Research Center (ERC) at the University of Wisconsin-Madison, USA.
Author : Amir-Mohammad Shamekhi
Publisher : CRC Press
ISBN 13 : 100083851X
Total Pages : 192 pages
Book Rating : 4.0/5 (8 download)
Download or read book Spark Ignition Engine Modeling and Control System Design written by Amir-Mohammad Shamekhi and published by CRC Press. This book was released on 2023-02-22 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents a step-by-step guide to the engine control system design, providing case studies and a thorough analysis of the modeling process using machine learning, and model predictive control (MPC). Covering advanced processes alongside the theoretical foundation, MPC enables engineers to improve performance in both hybrid and non-hybrid vehicles. Control system improvement is one of the major priorities for engineers seeking to enhance an engine. Often possible on a low budget, substantial improvements can be made by applying cutting-edge methods, such as artificial intelligence when modeling engine control system designs and using MPC. This book presents approaches to control system improvement at mid, low, and high levels of control. Beginning with the model-in-the-loop hierarchical control design of ported fuel injection SI engines, this book focuses on optimal control of both transient and steady state and also discusses hardware-in-the-loop. The chapter on low-level control discusses adaptive MPC and adaptive variable functioning, as well as designing a fuel injection feed-forward controller. At mid-level control, engine calibration maps are discussed, with consideration of constraints such as limits on pollutant emissions. Finally, the high-level control methodology is discussed in detail in relation to transient torque control of SI engines. This comprehensive yet clear guide to control system improvement is an essential read for any engineer working in automotive engineering and engine control system design.
Author : Sadiyah Sabah Chowdhury
Publisher :
ISBN 13 :
Total Pages : 223 pages
Book Rating : 4.5/5 (355 download)
Download or read book Three-dimensional Multi-physics Modeling Methodology to Study Engine Cylinder-kit Assembly Tribology and Design Considerations written by Sadiyah Sabah Chowdhury and published by . This book was released on 2021 with total page 223 pages. Available in PDF, EPUB and Kindle. Book excerpt: Engine cylinder-kit tribology is pivotal to durability, emission management, friction, oil consumption, and efficiency of the internal combustion engine. The piston ring pack dynamics and the flow dynamics are critical to engine cylinder-kit tribology and design considerations. A three-dimensional (3D), multi-physics methodology is developed to investigate the liquid oil- combustion gas transport and oil evaporation mechanisms inside the whole domain of the cylinder kit assembly during the four-stroke cycle using multiple simulation tools and high-performance computing. First, a CASE (Cylinder-kit Analysis System for Engines) 1D model is developed to provide necessary boundary conditions for the subsequent steps of the chain of simulations. Next, the ring-bore and ring groove conformability along with the twist angle variation across the circumference are investigated by modeling a twisted ring via a 3D ring FEA contact model. The ring twist induces change in ring location which subsequently changes the cylinder kit geometry dynamically across the cycle. The dynamically varying geometries are generated using the LINCC (Linking CASE to CFD) program. Finally, a three-dimensional multiphase flow model is developed for the dynamic geometries across the cycle using CONVERGE. The methodology is first applied on a small-bore (50 mm) engine running at 2000 rpm. Next, a CASE 1-D model is developed and calibrated via HEEDS across a range of load-speed operating conditions of a Cummins 6-cylinder, 137.02 mm bore, Acadia engine. The 1800 RPM, full load condition with a positively twisted second ring is selected for the experimental validation of the 3-D methodology. A study of the second ring dynamics in the small-bore engine showed the effect of negative ring twist on the three-dimensional fluid flow physics. The oil (liquid oil and oil vapor) transport and combustion gas flow processes through the piston ring pack for the twisted and untwisted geometry configurations are compared. A comparison with the untwisted geometry for this cylinder-kit shows that the negatively twisted second ring resulted in a higher blowby but lower reverse blowby and oil consumption. The comparison of the model predicted oil consumption with existing literature shows that oil consumption is within the reasonable range for typical engines. The blowby, second land pressures and third land pressures comparison with the experimental results of Cummins Acadia engine showed considerable agreement. The reverse blowby and oil consumption along with the liquid oil and oil vapor mass fraction distribution pattern across the cycle are also analyzed.In the later section of this work surface texture characterization of a novel Abradable Powder Coating (APC) and stock piston skirt coatings of a Cummins 2.8 L Turbo engine is conducted. The surface texture and characteristic properties varying across the piston skirt are obtained and analyzed via a 3D optical profiler and OmniSurf3D software. The engine operating conditions are found through a combination of measurements, testing, and a calibrated GT-Power model. The variable surface properties along with other geometric, thermodynamic, material properties are utilized to build a model in CASE for both APC and stock coated pistons. The Surface texture analysis shows that the APC coating has a unique feature of mushroom cap-like surface and deeper valleys that could potentially be beneficial for lubrication and oil retention. Comparison of different performance parameters from CASE simulation results shows that APC has the potential to be a suitable candidate for piston skirt coating.
Author : Xin Yu
Publisher :
ISBN 13 :
Total Pages : 331 pages
Book Rating : 4.:/5 (932 download)
Download or read book Methodology for Validating Multi-dimensional Engine Combustion Models and Fuel Surrogates Using an Optically Accessible Compression Ignition Engine written by Xin Yu and published by . This book was released on 2015 with total page 331 pages. Available in PDF, EPUB and Kindle. Book excerpt: In response to increasingly stringent engine emissions regulation, three dimensional in-cylinder combustion modeling is increasingly being used as a tool to optimize the combustion process and reduce the cost of experimental testing. Due to the complexity of the physical and chemical interactions involved in the in-cylinder combustion process, the engine combustion model consists of numerous sub-models developed under pre-defined initial and boundary conditions requiring further model calibration depending on different engine applications. Fuel surrogates, one of those sub-models developed for different combustion applications, may not capture all the behavior when applied to the varying temperature-pressure conditions present in a compression ignition engine. In this work a set of optical and global measurements are chosen to experimentally validate a fuel surrogate using an optically accessible compression ignition engine. In addition, to provide a means of directly comparing three-dimensional engine combustion CFD predictions to in- cylinder optical measurements, another aim of this work is to model light emission during the compression ignition engine combustion process. Major excited state species (CH*, CH2O*, OH*, CO2* and C2*) are modeled to study UV chemiluminescence signal observed in the in-cylinder hydrocarbon fuel oxidation process. A novel approach to validate multi-dimensional combustion CFD results is presented. The classic two-color method theory is further developed by analysis of the natural soot luminosity on a McKenna Flat Flame Burner. Spectral and Coherent anti-Stokes Raman Spectroscopy (CARS) measurements are used to propose a value of 0ł in the soot emissivity model.
Author : Anuj Pal
Publisher :
ISBN 13 :
Total Pages : 182 pages
Book Rating : 4.5/5 (381 download)
Download or read book Model Assisted Iterative Calibration of Internal Combustion Engines written by Anuj Pal and published by . This book was released on 2021 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent automotive technological advancements mainly focus on improving fuel economy with satisfactory emission levels, leading to a significant increment of engine system complexity, especially diesel engines. This increases the number of engine control parameters, making the engine calibration process challenging and time-consuming using the conventional map-based approach. Note that engine calibration is a crucial step in achieving optimal engine performance with satisfactory emissions, and it is an expensive process in general. With the advancement and widespread adoption of machine learning methods for control applications, it is now possible to use a black-box model with intelligence to efficiently calibrate nonlinear systems without detailed knowledge of system dynamics. The surrogate-assisted optimization approach is an attractive way to reduce the total computational budget for obtaining optimal solutions. This makes it special for its application to practical optimization problems requiring a large number of expensive evaluations.The current research work focuses on the problem of performing engine calibration using the surrogate-assisted optimization approach. The objective is to find the trade-off curve between engine efficiency in terms of brake specific fuel consumption (BSFC) and its NOx emissions by efficiently optimizing various control parameters. The complete study is divided into three parts. The first part deals with modifying the original algorithm for efficiently handling the practical system with measurement noise. A new constrained handling algorithm is proposed for lower confidence bound (LCB) criteria that showed good performance for both deterministic and stochastic systems. Furthermore, two extensions based on the expected improvement (EI) criterion are proposed for handling stochastic multi-objective problems.After the methodology development for handling stochastic systems, the second part validates their efficacy for performing the engine calibration in a simulation setting. All three algorithms are compared to identify the best approach for its implementation on the actual engine experimental setup. Three control parameters, namely variable geometry turbocharger (VGT) vane position, exhaust-gas-recirculating (EGR) valve position, and the start of injection (SOI), are calibrated to obtain the trade-off between engine fuel efficiency performance (BSFC) and NOx emissions within the constrained design space. The simulation study identifies the lower confidence bound (LCB) criteria with the proposed constraint handling approach to work well in the stochastic setting, compared with the other two extensions. Therefore, this approach is used for the experimental evaluation of the proposed surrogate-assisted optimization for engine calibration.Finally, the third part is the experimental validation. It is the first step towards automating the entire engine calibration process. Experimental evaluations are performed on a 6.7L Ford diesel engine to validate the algorithm's efficacy. Problems with different complexity are formulated and evaluated using the proposed approach. Initially, a simpler problem with two control variables is formulated to get the confidence to perform the experiments using the proposed algorithm. Two variables: EGR valve position and VGT vane positions, are calibrated to obtain a trade-off between engine efficiency (BSFC) and NOx emissions. After observing promising results, the study is concluded with a more complicated three control variable problem. An external electrically assisted boosting device (eBoost) is added to the engine system to perform calibration. Results showed improved engine performance using the eBoost with a significant reduction in calibration effort in terms of the number of experimental evaluations. The study successfully demonstrated the application of the surrogate-assisted optimization approach to a practical engine system and opened the door to automate the engine calibration process with reduced calibration efforts.
Author : V.V. Vantsevich
Publisher : IOS Press
ISBN 13 : 1614995761
Total Pages : 408 pages
Book Rating : 4.6/5 (149 download)
Download or read book Advanced Autonomous Vehicle Design for Severe Environments written by V.V. Vantsevich and published by IOS Press. This book was released on 2015-10-20 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Classical vehicle dynamics, which is the basis for manned ground vehicle design, has exhausted its potential for providing novel design concepts to a large degree. At the same time, unmanned ground vehicle (UGV) dynamics is still in its infancy and is currently being developed using general analytical dynamics principles with very little input from actual vehicle dynamics theory. This technical book presents outcomes from the NATO Advanced Study Institute (ASI) ‘Advanced Autonomous Vehicle Design for Severe Environments’, held in Coventry, UK, in July 2014. The ASI provided a platform for world class professionals to meet and discuss leading-edge research, engineering accomplishments and future trends in manned and unmanned ground vehicle dynamics, terrain mobility and energy efficiency. The outcomes of this collective effort serve as an analytical foundation for autonomous vehicle design. Topics covered include: historical aspects, pivotal accomplishments and the analysis of future trends in on- and off-road manned and unmanned vehicle dynamics; terramechanics, soil dynamic characteristics, uncertainties and stochastic characteristics of vehicle-environment interaction for agile vehicle dynamics modeling; new methods and techniques in on-line control and learning for vehicle autonomy; fundamentals of agility and severe environments; mechatronics and cyber-physics issues of agile vehicle dynamics to design for control, energy harvesting and cyber security; and case studies of agile and inverse vehicle dynamics and vehicle systems design, including optimisation of suspension and driveline systems. The book targets graduate students, who desire to advance further in leading-edge vehicle dynamics topics in manned and unmanned ground vehicles, PhD students continuing their research work and building advanced curricula in academia and industry, and researchers in government agencies and private companies.
