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Author : Udo Gerke
Publisher : Cuvillier Verlag
Page : 39 pages
File Size : 53,7 Mb
Release : 2007
Category : Hydrogen as fuel
ISBN : 9783867274999
Author : Carsten Baumgarten
Publisher : Springer Science & Business Media
Page : 312 pages
File Size : 40,8 Mb
Release : 2006-09-28
Category : Technology & Engineering
ISBN : 9783540308362
A systematic control of mixture formation with modern high-pressure injection systems enables us to achieve considerable improvements of the combustion pr- ess in terms of reduced fuel consumption and engine-out raw emissions. However, because of the growing number of free parameters due to more flexible injection systems, variable valve trains, the application of different combustion concepts within different regions of the engine map, etc., the prediction of spray and m- ture formation becomes increasingly complex. For this reason, the optimization of the in-cylinder processes using 3D computational fluid dynamics (CFD) becomes increasingly important. In these CFD codes, the detailed modeling of spray and mixture formation is a prerequisite for the correct calculation of the subsequent processes like ignition, combustion and formation of emissions. Although such simulation tools can be viewed as standard tools today, the predictive quality of the sub-models is c- stantly enhanced by a more accurate and detailed modeling of the relevant pr- esses, and by the inclusion of new important mechanisms and effects that come along with the development of new injection systems and have not been cons- ered so far. In this book the most widely used mathematical models for the simulation of spray and mixture formation in 3D CFD calculations are described and discussed. In order to give the reader an introduction into the complex processes, the book starts with a description of the fundamental mechanisms and categories of fuel - jection, spray break-up, and mixture formation in internal combustion engines.
Author : Simon Ellgas
Publisher : Cuvillier Verlag
Page : 29 pages
File Size : 54,6 Mb
Release : 2008
Category : Electronic
ISBN : 9783867275293
Author : Fushui Liu
Publisher : Cuvillier Verlag
Page : 136 pages
File Size : 41,8 Mb
Release : 2004
Category : Electronic
ISBN : 9783865371676
Author : S.A. Sherif,D. Yogi Goswami,E.K. (Lee) Stefanakos,Aldo Steinfeld
Publisher : CRC Press
Page : 1062 pages
File Size : 50,8 Mb
Release : 2014-07-29
Category : Science
ISBN : 9781420054477
Can hydrogen and electricity supply all of the world’s energy needs? Handbook of Hydrogen Energy thoroughly explores the notion of a hydrogen economy and addresses this question. The handbook considers hydrogen and electricity as a permanent energy system and provides factual information based on science. The text focuses on a large cross section of applications such as fuel cells and catalytic combustion of hydrogen. The book also includes information on inversion curves, physical and thermodynamic tables, and properties of storage materials, data on specific heats, and compressibility and temperature–entropy charts and more. Analyzes the principles of hydrogen energy production, storage, and utilization Examines electrolysis, thermolysis, photolysis, thermochemical cycles, and production from biomass and other hydrogen production methods Covers all modes of hydrogen storage: gaseous, liquid, slush, and metal hydride storage Handbook of Hydrogen Energy serves as a resource for graduate students, as well as a reference for energy and environmental engineers and scientists.
Author : Anonim
Publisher : vdf Hochschulverlag AG
Page : 151 pages
File Size : 43,5 Mb
Release : 2008
Category : Climatic changes
ISBN : 9783728132185
The enormous challenge of creating a longterm sustainable energy system calls for the participation of engineers, natural and social scientists. They can contribute both through their research and by helping to craft strategies that steer the future development of the system. A sustainable energy system cannot be developed by technical fixes alone; action is required on a broad front, including institutional and regulatory changes. There is an abundance of scientific evidence on which to base decisions on how to proceed. Still, research has a crucial role to play as well.Smart Energy Strategies highlights smart solutions: advances in technical and social-science energy research, particularly advances related to new information technology (e.g. control and communication); and experience with targeted applications of information technology in the supply and consumption of energy. The conference has focused on smart strategies taking into account current technical and institutional systems, with their inertia and shortcomings; future energy-related challenges: energy security; the growing energy needs of the disadvantaged; and unintended consequences of energy systems, particularly climate change but also uncontrolled money flows; smart technical, institutional, and regulatory mechanisms for meeting these challenges.
Author : P. A. Lakshminarayanan
Publisher : Springer Nature
Page : 678 pages
File Size : 46,8 Mb
Release : 2024-07-04
Category : Electronic
ISBN : 9789819706297
Author : P. A. Lakshminarayanan,Yoghesh V. Aghav
Publisher : Springer Science & Business Media
Page : 313 pages
File Size : 45,9 Mb
Release : 2010-03-03
Category : Technology & Engineering
ISBN : 9789048138852
Phenomenology of Diesel Combustion and Modeling Diesel is the most efficient combustion engine today and it plays an important role in transport of goods and passengers on land and on high seas. The emissions must be controlled as stipulated by the society without sacrificing the legendary fuel economy of the diesel engines. These important drivers caused innovations in diesel engineering like re-entrant combustion chambers in the piston, lower swirl support and high pressure injection, in turn reducing the ignition delay and hence the nitric oxides. The limits on emissions are being continually reduced. The- fore, the required accuracy of the models to predict the emissions and efficiency of the engines is high. The phenomenological combustion models based on physical and chemical description of the processes in the engine are practical to describe diesel engine combustion and to carry out parametric studies. This is because the injection process, which can be relatively well predicted, has the dominant effect on mixture formation and subsequent course of combustion. The need for improving these models by incorporating new developments in engine designs is explained in Chapter 2. With “model based control programs” used in the Electronic Control Units of the engines, phenomenological models are assuming more importance now because the detailed CFD based models are too slow to be handled by the Electronic Control Units. Experimental work is necessary to develop the basic understanding of the pr- esses.
Author : Avinash Kumar Agarwal,Santanu De,Ashok Pandey,Akhilendra Pratap Singh
Publisher : Springer
Page : 451 pages
File Size : 49,7 Mb
Release : 2017-01-20
Category : Technology & Engineering
ISBN : 9789811037856
This research monograph presents both fundamental science and applied innovations on several key and emerging technologies involving fossil and alternate fuel utilization in power and transport sectors from renowned experts in the field. Some of the topics covered include: autoignition in laminar and turbulent nonpremixed flames; Langevin simulation of turbulent combustion; lean blowout (LBO) prediction through symbolic time series analysis; lasers and optical diagnostics for next generation IC engine development; exergy destruction study on small DI diesel engine; and gasoline direct injection. The book includes a chapter on carbon sequestration and optimization of enhanced oil and gas recovery. The contents of this book will be useful to researchers and professionals working on all aspects on combustion.
Author : Günter P. Merker,Christian Schwarz,Rüdiger Teichmann
Publisher : Springer Science & Business Media
Page : 660 pages
File Size : 54,6 Mb
Release : 2011-09-24
Category : Technology & Engineering
ISBN : 9783642140945
Combustion Engines Development nowadays is based on simulation, not only of the transient reaction of vehicles or of the complete driveshaft, but also of the highly unsteady processes in the carburation process and the combustion chamber of an engine. Different physical and chemical approaches are described to show the potentials and limits of the models used for simulation.
Author : Eran Sher
Publisher : Academic Press
Page : 689 pages
File Size : 41,8 Mb
Release : 1998-03-20
Category : Technology & Engineering
ISBN : 9780080532752
This handbook is an important and valuable source for engineers and researchers in the area of internal combustion engines pollution control. It provides an excellent updated review of available knowledge in this field and furnishes essential and useful information on air pollution constituents, mechanisms of formation, control technologies, effects of engine design, effects of operation conditions, and effects of fuel formulation and additives. The text is rich in explanatory diagrams, figures and tables, and includes a considerable number of references. An important resource for engineers and researchers in the area of internal combustion engines and pollution control Presents and excellent updated review of the available knowledge in this area Written by 23 experts Provides over 700 references and more than 500 explanatory diagrams, figures and tables
Author : Gunnar Stiesch
Publisher : Springer Science & Business Media
Page : 293 pages
File Size : 48,7 Mb
Release : 2013-06-29
Category : Computers
ISBN : 9783662087909
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 : Jun Li,Noroyuki Kobayashi,Zhihua Wang
Publisher : Frontiers Media SA
Page : 119 pages
File Size : 50,5 Mb
Release : 2023-07-10
Category : Technology & Engineering
ISBN : 9782832503454
Author : Paweł Woś,Mirosław Jakubowski
Publisher : BoD – Books on Demand
Page : 176 pages
File Size : 51,5 Mb
Release : 2020-11-26
Category : Technology & Engineering
ISBN : 9781839680328
The matters discussed and presented in the chapters of this book cover a wide spectrum of topics and research methods commonly used in the field of engine combustion technology and vehicle functional systems. This book contains the results of both computational analyses and experimental studies on jet and reciprocating combustion engines as well heavy-duty onroad vehicles. Special attention is devoted to research and measures toward preventing the emission of harmful exhaust components, reducing fuel consumption or using unconventional methods of engine fueling or using renewable and alternative fuels in different applications. Some technical improvements in design and control of vehicle systems are also presented.
Author : Hatim Machrafi
Publisher : Bentham Science Publishers
Page : 388 pages
File Size : 53,9 Mb
Release : 2012
Category : Technology & Engineering
ISBN : 9781608052851
"Energy is indispensable in present society. All depend on a constant and reliable source of energy, whether it be for transport, industrial or home applications. The use of such energy sources can present some inconveniences, such as source depletion, pol"