Modeling Multicomponent Fuel Sprays in Engines with Application to Diesel Cold-starting

Modeling Multicomponent Fuel Sprays in Engines with Application to Diesel Cold-starting PDF Author: Nabil S. Ayoub
Publisher:
ISBN:
Category :
Languages : en
Pages : 388

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Modeling Multicomponent Fuel Sprays in Engines with Application to Diesel Cold-starting

Modeling Multicomponent Fuel Sprays in Engines with Application to Diesel Cold-starting PDF Author: Nabil S. Ayoub
Publisher:
ISBN:
Category :
Languages : en
Pages : 388

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Modeling of Multicomponent Fuels with Application to Sprays and Simulation of Diesel Engine Cold Start

Modeling of Multicomponent Fuels with Application to Sprays and Simulation of Diesel Engine Cold Start PDF Author: Andreas M. Lippert
Publisher:
ISBN:
Category : Diesel fuels
Languages : en
Pages : 728

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May 1999

Thermo-and Fluid-dynamic Processes in Diesel Engines

Thermo-and Fluid-dynamic Processes in Diesel Engines PDF Author: James H.W. Whitelaw
Publisher: Springer Science & Business Media
ISBN: 9783540426653
Category : Science
Languages : en
Pages : 460

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Book Description
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.

Mixture Formation in Internal Combustion Engines

Mixture Formation in Internal Combustion Engines PDF Author: Carsten Baumgarten
Publisher: Springer Science & Business Media
ISBN: 3540308369
Category : Technology & Engineering
Languages : en
Pages : 312

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Book Description
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.

Experiments and Modeling of Fuel Composition Effects on Diesel Engine Performance and Emissions

Experiments and Modeling of Fuel Composition Effects on Diesel Engine Performance and Emissions PDF Author: Cathy Youngmi Choi
Publisher:
ISBN:
Category :
Languages : en
Pages : 610

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Numerical and Experimental Investigation of Water Introduction Into DI Diesel Engine Combustion

Numerical and Experimental Investigation of Water Introduction Into DI Diesel Engine Combustion PDF Author: Peter Eckert
Publisher: Logos Verlag Berlin GmbH
ISBN: 3832519513
Category : Technology & Engineering
Languages : en
Pages : 152

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Book Description
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.

Modeling Superheated Fuel Sprays and Vaporization for GDI Engines Using Single- and Multi-component Fuel Models

Modeling Superheated Fuel Sprays and Vaporization for GDI Engines Using Single- and Multi-component Fuel Models PDF Author: André Marques Gomes
Publisher:
ISBN:
Category :
Languages : en
Pages : 372

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Numerical Modeling of Spray Primary Breakup with Application to Diesel Engines

Numerical Modeling of Spray Primary Breakup with Application to Diesel Engines PDF Author: Yong Yi
Publisher:
ISBN:
Category :
Languages : en
Pages : 296

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Modeling Engine Spray and Combustion Processes

Modeling Engine Spray and Combustion Processes PDF Author: Gunnar Stiesch
Publisher: Springer Science & Business Media
ISBN: 3662087901
Category : Computers
Languages : en
Pages : 293

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Book Description
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.

Multi-dimensional Engine Modeling 2005

Multi-dimensional Engine Modeling 2005 PDF Author:
Publisher:
ISBN:
Category : Automobiles
Languages : en
Pages : 174

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Book Description
... papers from the session Multi-Dimensional Engine Modeling, held during the SAE 2005 World Congress, April 11-14 in Detroit, MI, USA.