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Author : Nabil S. Ayoub
Publisher :
ISBN 13 :
Total Pages : 388 pages
Book Rating : 4.:/5 (89 download)
Download or read book Modeling Multicomponent Fuel Sprays in Engines with Application to Diesel Cold-starting written by Nabil S. Ayoub and published by . This book was released on 1995 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Andreas M. Lippert
Publisher :
ISBN 13 :
Total Pages : 728 pages
Book Rating : 4.:/5 (89 download)
Download or read book Modeling of Multicomponent Fuels with Application to Sprays and Simulation of Diesel Engine Cold Start written by Andreas M. Lippert and published by . This book was released on 1999 with total page 728 pages. Available in PDF, EPUB and Kindle. Book excerpt: May 1999
Author :
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (318 download)
Download or read book Multidimensional Modeling of Fuel Composition Effects on Combustion and Cold-starting in Diesel Engines written by and published by . This book was released on 1995 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: A computer model developed for describing multicomponent fuel vaporization, and ignition in diesel engines has been applied in this study to understand cold-starting and the parameters that are of significant influence on this phenomena. This research utilizes recent improvements in spray vaporization and combustion models that have been implemented in the KIVA-II CFD code. Typical engine fuels are blends of various fuels species, i.e., multicomponent. Thus, the original single component fuel vaporization model in KIVA-II was replaced by a multicomponent fuel vaporization model (based on the model suggested by Jin and Borman). The model has been extended to model diesel sprays under typical diesel conditions, including the effect of fuel cetane number variation. Necessary modifications were carried out in the atomization and collision sub-models. The ignition model was also modified to account for fuel composition effects by modifying the Shell ignition model. The improved model was applied to simulate diesel engine cold-starting. The effect of fuel residual from previous cycles was studied and was found to be important. Other injection parameters, such as injection timing and duration were also studied. Another factor that was investigated was engine geometry and how it can be modified to improve on cold-starting in diesel engines. Cold-starting was found to be enhanced by the presence of a small fuel vapor residual and by a shorter injection duration, while engine geometry modifications were found to be helpful in selecting an optimum location on the cylinder head for an ignition aid.
Author : Nabil S. Ayoub
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (137 download)
Download or read book Modeling Multicomponet Fuel Sprays in Engines with Application to Diesel Cold-Starting, (PhD., University of Wisconsin-Madison, 1995). written by Nabil S. Ayoub and published by . This book was released on 1995 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : James H.W. Whitelaw
Publisher : Springer Science & Business Media
ISBN 13 : 9783540426653
Total Pages : 460 pages
Book Rating : 4.4/5 (266 download)
Download or read book Thermo-and Fluid-dynamic Processes in Diesel Engines written by James H.W. Whitelaw and published by Springer Science & Business Media. This book was released on 2002-01-11 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume includes versions of papers selected from those presented at the THIESEL 2000 Conference on Thermofluidynamic Processes in Diesel Engines, held at the Universidad Politecnica de Valencia, during the period of September th th 13 to 15 , 2000. The papers are grouped into seven thematic areas: State of the Art and Prospective, Fuels for Diesel Engines, Injection System and Spray Formation, Combustion and Pollutant Formation, Modelling, Experimental Techniques, and Air Management. These areas cover most of the technologies and research strategies that may allow Light Duty and Heavy Duty Diesel engines to comply with current and forthcoming emission standards, while maintaining or improving fuel consumption. The main objectives of the conference were to bring together ideas and experience from Industry and Universities to facilitate interchange of information and to promote discussion of future research and development needs. The technical papers emphasised the use diagnostic and simulation techniques and their relationship to engineering practice and the advancement of the Diesel engine. We hope that this approach, which proved to be successful at the Conference, is reflected in this volume. We thank all those who contributed to the success of the Conference, and particularly the members of the Advisory Committee who assessed abstracts and chaired many of the technical sessions. Weare also grateful to participants who presented their work or contributed to the many discussions. Finally, the Conference benefitted from financial support from the organisations listed below and we are glad to have this opportunity to record our gratitude.
Author : Carsten Baumgarten
Publisher : Springer Science & Business Media
ISBN 13 : 3540308369
Total Pages : 312 pages
Book Rating : 4.5/5 (43 download)
Download or read book Mixture Formation in Internal Combustion Engines written by Carsten Baumgarten and published by Springer Science & Business Media. This book was released on 2006-09-28 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Cathy Youngmi Choi
Publisher :
ISBN 13 :
Total Pages : 610 pages
Book Rating : 4.:/5 (89 download)
Download or read book Experiments and Modeling of Fuel Composition Effects on Diesel Engine Performance and Emissions written by Cathy Youngmi Choi and published by . This book was released on 1998 with total page 610 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Yong Yi
Publisher :
ISBN 13 :
Total Pages : 296 pages
Book Rating : 4.:/5 (89 download)
Download or read book Numerical Modeling of Spray Primary Breakup with Application to Diesel Engines written by Yong Yi and published by . This book was released on 2002 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Peter Eckert
Publisher : Logos Verlag Berlin GmbH
ISBN 13 : 3832519513
Total Pages : 152 pages
Book Rating : 4.8/5 (325 download)
Download or read book Numerical and Experimental Investigation of Water Introduction Into DI Diesel Engine Combustion written by Peter Eckert and published by Logos Verlag Berlin GmbH. This book was released on 2008 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: Im vorliegenden Band 3/2008 berichtet Herr Eckert uber die Ergebnisse aus Untersuchungen zur Partikel- und Stickoxidminimierung bei Dieselmotoren durch Wassereinbringung. Das primare Ziel ist dabei die innermotorische Reduzierung der thermischen Stickoxidbildung. Es sind unterschiedliche Methoden der wassereinbringung in den dieselmotorischen Verbrennungsprozess moglich; beispielsweise die Einspritzung von Wasser in das Ansaugsystem, eine direkte Einspritzung von Wasser in den Brennraum sowie die Wassereinbringung mit Diesel- Wasser Emulsionen. Diese Massnahmen sind unter anderem bei dieselmotoren, die zumindest teilweise mit Schwerol betrieben werden, besonders interessant, da dort klassische Methoden zur Schadstoffreduktion, wie z.B. Abgasruckfuhrung oder Abgasnachbehandlung, nur mit erheblichem Aufwand eingesetzt werden konnen.
Author : André Marques Gomes
Publisher :
ISBN 13 :
Total Pages : 372 pages
Book Rating : 4.:/5 (89 download)
Download or read book Modeling Superheated Fuel Sprays and Vaporization for GDI Engines Using Single- and Multi-component Fuel Models written by André Marques Gomes and published by . This book was released on 2001 with total page 372 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 :
Publisher :
ISBN 13 :
Total Pages : 174 pages
Book Rating : 4.X/5 (4 download)
Download or read book Multi-dimensional Engine Modeling 2005 written by and published by . This book was released on 2005 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: ... papers from the session Multi-Dimensional Engine Modeling, held during the SAE 2005 World Congress, April 11-14 in Detroit, MI, USA.
Author : Sergei Sazhin
Publisher : Springer
ISBN 13 : 1447163869
Total Pages : 345 pages
Book Rating : 4.4/5 (471 download)
Download or read book Droplets and Sprays written by Sergei Sazhin and published by Springer. This book was released on 2014-05-19 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Providing a clear and systematic description of droplets and spray dynamic models, this book maximises reader insight into the underlying physics of the processes involved, outlines the development of new physical and mathematical models and broadens understanding of interactions between the complex physical processes which take place in sprays. Complementing approaches based on the direct application of computational fluid dynamics (CFD), Droplets and Sprays treats both theoretical and practical aspects of internal combustion engine process such as the direct injection of liquid fuel, subcritical heating and evaporation. Including case studies that illustrate the approaches relevance to automotive applications, it is also anticipated that the described models can find use in other areas such as in medicine and environmental science.
Author : Donald W. Stanton
Publisher :
ISBN 13 :
Total Pages : 668 pages
Book Rating : 4.:/5 (89 download)
Download or read book Multi-dimensional Modeling of Fuel Films and Spray-wall Interactions Resulting from Impinging Sprays written by Donald W. Stanton and published by . This book was released on 1998 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sergei S. Sazhin
Publisher : Springer Nature
ISBN 13 : 3030997464
Total Pages : 603 pages
Book Rating : 4.0/5 (39 download)
Download or read book Droplets and Sprays: Simple Models of Complex Processes written by Sergei S. Sazhin and published by Springer Nature. This book was released on 2022-06-28 with total page 603 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book acts as a guide to simple models that describe some of the complex fluid dynamics, heat/mass transfer and combustion processes in droplets and sprays. Attention is focused mainly on the use of classical hydrodynamics, and a combination of kinetic and hydrodynamic models, to analyse the heating and evaporation of mono- and multi-component droplets. The models were developed for cases when small and large numbers of components are present in droplets. Some of these models are used for the prediction of time to puffing/micro-explosion of composite water/fuel droplets — processes that are widely used in combustion devices to stimulate disintegration of relatively large droplets into smaller ones. The predictions of numerical codes based on these models are validated against experimental results where possible. In most of the models, droplets are assumed to be spherical; some preliminary results of the generalisation of these models to the case of non-spherical droplets, approximating them as spheroids, are presented.
Author : Steven G. Fritz
Publisher :
ISBN 13 :
Total Pages : 306 pages
Book Rating : 4.:/5 (138 download)
Download or read book An Optical Investigation of the Cold Starting Characteristics of Alternate Fuel Sprays in a Spark-assisted Direct Injection Diesel Engine Using High-speed Photography written by Steven G. Fritz and published by . This book was released on 1986 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : American Society of Mechanical Engineers. Internal Combustion Engine Division. Spring Technical Conference
Publisher :
ISBN 13 :
Total Pages : 746 pages
Book Rating : 4.3/5 (91 download)
Download or read book Proceedings of the ... Spring Technical Conference of the ASME Internal Combustion Engine Division written by American Society of Mechanical Engineers. Internal Combustion Engine Division. Spring Technical Conference and published by . This book was released on 2003 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:
