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Book Experimental Investigation of Piston Heat Transfer Under Conventional Diesel and Reactivity Controlled Compression Ignition Combustion Regimes

Download or read book Experimental Investigation of Piston Heat Transfer Under Conventional Diesel and Reactivity Controlled Compression Ignition Combustion Regimes written by and published by . This book was released on 2013 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book A Computational Investigation on the Effects of Radiation and Wall Heat Transfer on Diesel Engine Performance

Download or read book A Computational Investigation on the Effects of Radiation and Wall Heat Transfer on Diesel Engine Performance written by James Fredric Wiedenhoefer and published by . This book was released on 2002 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Investigation of the Heat Transfer in an Internal combustion Piston Engine

Download or read book Investigation of the Heat Transfer in an Internal combustion Piston Engine written by N. R. Briling and published by . This book was released on 1963 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Modelling Diesel Combustion

Download or read book Modelling Diesel Combustion written by P. A. Lakshminarayanan and published by Springer Science & Business Media. This book was released on 2010-03-03 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Book Experimental Methods in Engine Research and Development

Download or read book Experimental Methods in Engine Research and Development written by Institution of Mechanical Engineers (Great Britain) and published by . This book was released on 1988 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book High output Diesel Engine Heat Transfer

Download or read book High output Diesel Engine Heat Transfer written by Eric Michael Gingrich and published by . This book was released on 2020 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: High-output diesel engine heat transfer was investigated using a single-cylinder research engine. Engine operating conditions near 30 bar IMEPg and 250 bar in-cylinder pressure were tested. This study had three primary goals. The first was to compare local piston heat transfer, based on fast-response piston surface temperature data, to global engine heat transfer based on thermodynamic data. A wireless telemetry system was used to acquire fast-response piston surface temperature data, from which heat flux was calculated. The local measurements were then spatially averaged to find total heat transfer, which agreed relatively well with the global measurements. In the second part of this research, thermal barrier coatings of various thickness and surface roughness were applied to the piston crown. Three coated pistons were tested. Coatings with higher roughness did not show any statistically significant improvement to engine performance when compared to the metal baseline piston, and produced higher filter smoke numbers. The lower roughness coated piston showed an increase of gross indicated thermal efficiency of up to 3.5 % (relative) compared to the metal baseline piston for some operating conditions. The increase in efficiency was found to correlate with additional late-cycle apparent heat release rate and a reduction in in-cylinder heat transfer. In the third part of this research, a new instantaneous spatially averaged heat transfer correlation was developed using the local heat flux data. Previous correlations are based on the correlation of Nusselt and Reynolds numbers. The new correlation included an additional term, dimensionless chemical energy release rate. The new term was derived from dimensional analysis, which should enable similitude for diesel engines. A new interpretation of the characteristic velocity, as found in the Reynolds number, was developed and included the integrated fuel mass injection rate. The existing and new correlations were calibrated to the experimental data by minimizing the least squares error. On average, the new formulation was found to match the experimental data better than the existing models.

Book Heat and Mass Transfer in Gasoline and Diesel Engines

Download or read book Heat and Mass Transfer in Gasoline and Diesel Engines written by Dudley Brian Spalding and published by Core/Mechanical. This book was released on 1989 with total page 766 pages. Available in PDF, EPUB and Kindle. Book excerpt: The editors explain that the classical formulae and techniques for predicting heat flow do not apply to the unique conditions found in reciprocating engines. They warn the reader--presumed to be aspiring designers of more efficient and less polluting engines--that although these papers, from every country where engineering is practiced, contain nearly all the available knowledge on the subject, no definitive answers emerge, no breakthroughs loom around the next equation. The topics include the transfer of engine heat and of external heat, numerical flow simulation, applications and devices, ignition and quenching, and measurement techniques. Annotation copyrighted by Book News, Inc., Portland, OR

Book Experimental Investigation and Mathematical Presentation of Rate of Heat Release in Diesel Engines Dependent Upon Engine Operating Conditions

Download or read book Experimental Investigation and Mathematical Presentation of Rate of Heat Release in Diesel Engines Dependent Upon Engine Operating Conditions written by G. Woschni and published by . This book was released on 1974 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: