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Author : Robert Paul Borthwick
Publisher : Unknown
Page : 176 pages
File Size : 46,7 Mb
Release : 2000
Category : Electronic
ISBN : WISC:89075816942
Author : P. A. Lakshminarayanan,Yoghesh V. Aghav
Publisher : Springer Science & Business Media
Page : 313 pages
File Size : 55,6 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 : Mark Sean Beckman
Publisher : Ann Arbor, Mich. : University Microfilms International
Page : 252 pages
File Size : 49,8 Mb
Release : 2004
Category : Electronic
ISBN : WISC:89090640244
Author : Dohoy Jung
Publisher : Unknown
Page : 330 pages
File Size : 55,5 Mb
Release : 2001
Category : Mechanical engineering
ISBN : UOM:39015049507414
Author : Anonim
Publisher : Unknown
Page : 2726 pages
File Size : 42,6 Mb
Release : 2002
Category : Chemistry
ISBN : UOM:39015057323951
Author : Anonim
Publisher : Unknown
Page : 830 pages
File Size : 40,8 Mb
Release : 2001
Category : Dissertations, Academic
ISBN : STANFORD:36105110578726
Author : Peter Martin Heldt
Publisher : Unknown
Page : 518 pages
File Size : 46,5 Mb
Release : 1950
Category : Diesel motor
ISBN : WISC:89089678379
Author : Scott P. Mislevy
Publisher : Unknown
Page : 282 pages
File Size : 50,5 Mb
Release : 2001
Category : Electronic
ISBN : WISC:89078142502
Author : F. Zhao,M.-C. Lai,D.L. Harrington
Publisher : Elsevier
Page : 129 pages
File Size : 52,7 Mb
Release : 2000-02-08
Category : Technology & Engineering
ISBN : 9780080552798
The process of fuel injection, spray atomization and vaporization, charge cooling, mixture preparation and the control of in-cylinder air motion are all being actively researched and this work is reviewed in detail and analyzed. The new technologies such as high-pressure, common-rail, gasoline injection systems and swirl-atomizing gasoline fuel injections are discussed in detail, as these technologies, along with computer control capabilities, have enabled the current new examination of an old objective; the direct-injection, stratified-charge (DISC), gasoline engine. The prior work on DISC engines that is relevant to current GDI engine development is also reviewed and discussed. The fuel economy and emission data for actual engine configurations have been obtained and assembled for all of the available GDI literature, and are reviewed and discussed in detail. The types of GDI engines are arranged in four classifications of decreasing complexity, and the advantages and disadvantages of each class are noted and explained. Emphasis is placed upon consensus trends and conclusions that are evident when taken as a whole; thus the GDI researcher is informed regarding the degree to which engine volumetric efficiency and compression ratio can be increased under optimized conditions, and as to the extent to which unburned hydrocarbon (UBHC), NOx and particulate emissions can be minimized for specific combustion strategies. The critical area of GDI fuel injector deposits and the associated effect on spray geometry and engine performance degradation are reviewed, and important system guidelines for minimizing deposition rates and deposit effects are presented. The capabilities and limitations of emission control techniques and after treatment hardware are reviewed in depth, and a compilation and discussion of areas of consensus on attaining European, Japanese and North American emission standards presented. All known research, prototype and production GDI engines worldwide are reviewed as to performance, emissions and fuel economy advantages, and for areas requiring further development. The engine schematics, control diagrams and specifications are compiled, and the emission control strategies are illustrated and discussed. The influence of lean-NOx catalysts on the development of late-injection, stratified-charge GDI engines is reviewed, and the relative merits of lean-burn, homogeneous, direct-injection engines as an option requiring less control complexity are analyzed.
Author : J. A. Spanogle
Publisher : Unknown
Page : 24 pages
File Size : 52,9 Mb
Release : 1931
Category : Internal combustion engines
ISBN : UOM:39015095015965
During an investigation to determine the possibilities and limitations of a of a two-stroke-cycle engine with fuel injection and spark ignition, it was necessary to develo a fuel-injection valve nozzle to produce a disk-shaped, well-dispersed spray. Preliminary tests showed that two smooth jets impinging upon each other at an angle of 74 degrees gave a spray with the desired characteristics. Nozzles were built on this basis and, when used in fuel-injection valves, produced a spray that fulfilled the original requirements. The spray is so well dispersed that it can be carried along with an air system of comparatively low velocity or entrained with the fuel jet from a round-hole orifice. This characteristic of the spray from an impinging-jet nozzle limits its application to situations where wide dispersion is required by the conditions in the engine cylinder and the combustion chamber.
Author : Richard A. Booth
Publisher : Unknown
Page : 308 pages
File Size : 44,8 Mb
Release : 1994
Category : Electronic
ISBN : WISC:89052191376
Author : Anonim
Publisher : Unknown
Page : 816 pages
File Size : 52,5 Mb
Release : 2000
Category : Dissertation abstracts
ISBN : UOM:39015086908152
Author : Aakash Puntambekar
Publisher : Unknown
Page : 410 pages
File Size : 54,7 Mb
Release : 2009
Category : Electronic
ISBN : WISC:89106360746
Author : American Society of Mechanical Engineers. Internal Combustion Engine Division,American Society of Mechanical Engineers. Internal Combustion Engine Division. Technical Conference
Publisher : Unknown
Page : 478 pages
File Size : 41,9 Mb
Release : 2003
Category : Technology & Engineering
ISBN : UOM:39015056835187
Author : Anonim
Publisher : Unknown
Page : 1016 pages
File Size : 55,6 Mb
Release : 2005
Category : Automobiles
ISBN : UCSD:31822033640327