Download or read book Effect of Low Cetane Fuels on Diesel Engine Performance written by Society of Automotive Engineers, Inc and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Low Cetane Fuels on Diesel Engine Performance 2 combustion Performance of a Detroit Diesel 3 71 Engine written by N. N. Kallio and published by . This book was released on 1985 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Low Cetane Fuels on Diesel Engine Operation written by Anthony S. Davies and published by . This book was released on 1987 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Low cetane Fuel Performance in a Direct injection Spark assisted Diesel Engine written by Bernard F. Enright and published by . This book was released on 1988 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Low Cetane Fuels on Diesel Engine Operation written by R. B. Whyte and published by . This book was released on 1982 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

Download or read book Combustion of Low Cetane Fuels in a Spark Assisted Open Chamber Four Stroke Diesel Engine written by Yuh-Yih Wu and published by . This book was released on 1985 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mixing controlled Combustion of Low cetane Fuels written by Aravindh Babu Viswanathan and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in utilizing low-cetane fuels in heavy-duty compression ignition (CI) engines is on the rise to take advantage of fuel availability trends and improve urban air quality. This comes from the need to continue taking advantage of the superior efficiency of the mixing-controlled combustion mode used in CI engines while transitioning away from their current fuel of choice, diesel, toward cleaner low-cetane fuels. A thorough understanding of the challenges that could arise during mixing-controlled combustion of low-cetane fuels is needed to successfully navigate this transition. This research surveys the existing literature, enumerates the chief challenges to such a transition, proposes a novel approach with the potential to mitigate those challenges and conducts studies to study the viability of the technology and its potential to improve products on the field. One of the major challenges that is expected to arise during mixing-controlled combustion of low-cetane fuels is the difference in autoignition propensities between diesel (very high) and low-cetane fuels (typically low). Analysis of the literature pertaining to the use of gasoline in CI engines (referred to as GCI) is expected to offer extensive guidance to the present study of low-cetane fuels and identify areas that need addressing. Thus, a detailed survey of the current state of GCI research is presented in this report to enumerate the most significant challenges that are faced during mixing-controlled combustion of low-cetane fuels. The survey leads to the conclusion that stable combustion at low loads and the ability to operate the engine within emission limits under cold engine conditions will pose the most significant hurdles to a transition away from diesel. Reduced cylinder operation is identified as a technology with the potential to mitigate these challenges while also being a sufficiently developed technology to offer a realistic pathway to OEM implementation. Since RCO has never been studied as a combustion stabilization technology, experiments were carried out to assess the viability of cylinder deactivation in this novel role, by comparing the combustion stabilities of GCI operation when different sets of cylinders were deactivated. These experiments demonstrate that even at no-load conditions, cylinder deactivation enables stable GCI combustion while offering significant thermal and fuel efficiency benefits. Building on these results, experiments are conducted to compare RCO against intake pressurization, the chief alternative being proposed to stabilize GCI combustion. The intake pressurization is achieved by using another highly developed technology: 48V mild hybridization. Two electrically assisted air handling topologies are considered and compared against RCO from stabilization as well as performance standpoints. The results show RCO to have a clear advantage when considering aftertreatment performance, although the mild-hybrid components provide more robust stabilization. Combined optimization shows that these advantages can be combined with careful optimization. RCO is shown to alter several boundary conditions simultaneously and a 3-D CFD study is carried out to isolate the respective roles of each in combustion stabilization. In addition to significant roles for the pressure and temperature at intake valve closing, the combustion dwell (between the end of the injection event and the start of combustion) is seen to have an unexpectedly significant role in the combustion efficiency and stability. A subset of simple RCO strategies is then implemented on a heavy-duty engine and steady-state and transient experiments are conducted. These experiments show substantial benefits to implementing even simple RCO strategies on a heavy-duty engine, including faster aftertreatment warmup and slower aftertreatment cooldown as well as stability and fuel consumption benefits. Subsequently, simulations are conducted to assess the value of the remaining RCO strategies to GCI and even more substantial fuel consumption, aftertreatment thermal management and emissions benefits are predicted.

Download or read book Effect of Cetane Number and Volatility on Autoignition and Combustion of Alternative Fuels and Their Surrogates written by Ziliang Zheng and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Diesel engine has become a popular choice for trucks, trains, boats, and most other heavy-duty applications. The inherent benefits of diesel engine are high thermal efficiency and specific power output, but there is a concern about high levels of engine-out NOx and particulate matter emissions, which is a major contributor in environment pollution. Moreover, concern about the crisis of crude oil reserves, increasing gas price, trade deficit, and homeland security enhances the interests in alternative fuels. Unlike conventional diesel fuel, alternative fuels have wide range of properties, such as volatility, cetane number, density, viscosity and lower heating value, which influence the behavior of fuel and formation of products. Therefore, it is necessary to understand the effect of these fuel properties on autoignition, combustion, performance, and emissions under compression ignition conditions to evaluate the operational capability of diesel engines fueled with alternative fuels. This dissertation covers a detailed investigation of the autoignition, combustion, and emission characteristics of alternative fuels and their surrogates in a constant volume vessel of Ignition Quality Tester (IQT), optically accessible rapid compression machine (RCM), and Partnership for Next Generation of Vehicle (PNGV) single cylinder diesel engine. Experimental data and simulation results indicate that the fuel properties, such as cetane number and volatility, influence the autoignition and combustion processes in diesel engine environment.

Download or read book SAE 2006 05 0248 Effects of Fuel Properties to the Cold Starting Performance of a Low Compression Ratio DI Diesel Engine written by Koji Kitano and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of fuel properties on the cold-starting performance and white smoke (hydrocarbon emissions) were investigated in a low-compression-ratio diesel engine. To clarify the effects of fuel properties, cetane number, 10% distillation temperature (T10), and viscosity were changed among the test fuels. In order to facilitate the ignition of air-fuel mixture at lower compression end temperature, the test fuels were prepared with high cetane number from 54 to 75 by blending Gas-to-Liquid (GTL) fuel. The results showed the advantages of high cetane number in the starting time and engine stability. However, at very low temperature condition, it was found that fuel volatility is major factor for cold starting even high cetane number fuel. Moreover, the benefits for engine performance and exhaust emissions in the low-compression-ratio engine with high cetane number fuel were also evaluated.

Download or read book Automotive Fuels Reference Book written by Paul Richards and published by SAE International. This book was released on 2014-03-05 with total page 870 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first two editions of this title, published by SAE International in 1990 and 1995, have been best-selling definitive references for those needing technical information about automotive fuels. This long-awaited new edition has been thoroughly revised and updated, yet retains the original fundamental fuels information that readers find so useful. This book is written for those with an interest in or a need to understand automotive fuels. Because automotive fuels can no longer be developed in isolation from the engines that will convert the fuel into the power necessary to drive our automobiles, knowledge of automotive fuels will also be essential to those working with automotive engines. Small quantities of fuel additives increasingly play an important role in bridging the gap that often exists between fuel that can easily be produced and fuel that is needed by the ever-more sophisticated automotive engine. This book pulls together in a single, extensively referenced volume, the three different but related topics of automotive fuels, fuel additives, and engines, and shows how all three areas work together. It includes a brief history of automotive fuels development, followed by chapters on automotive fuels manufacture from crude oil and other fossil sources. One chapter is dedicated to the manufacture of automotive fuels and fuel blending components from renewable sources. The safe handling, transport, and storage of fuels, from all sources, are covered. New combustion systems to achieve reduced emissions and increased efficiency are discussed, and the way in which the fuels’ physical and chemical characteristics affect these combustion processes and the emissions produced are included. There is also discussion on engine fuel system development and how these different systems affect the corresponding fuel requirements. Because the book is for a global market, fuel system technologies that only exist in the legacy fleet in some markets are included. The way in which fuel requirements are developed and specified is discussed. This covers test methods from simple laboratory bench tests, through engine testing, and long-term test procedures.

Download or read book Relationship Between Specific Gravity and Other Fuel Properties and Diesel Engine Performance written by K. A. Troth and published by . This book was released on 1967 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although a low fuel consumption is an inherent feature of the diesel engine, operators are always looking for improvement to reduce operating costs. Since fuel is usually bought on a volumetric basis, an obvious way to improve fuel consumption would appear to be to use fuels of high specific gravity. However, the specific gravity of a diesel fuel is not an independent variable, and an increase in specific gravity will probably result in an attendant increase in the mid-boiling point of the fuel and, possibly, a decrease in the cetane number. Also, in general, a fuel of high specific gravity will have high cloud and pour points. It is suggested that for best over-all performance of a diesel engine with respect to cold starting, cold smoking, misfiring, noise and black-smoke emission, a reasonably volatile fuel of moderately high cetane number is required and that these requirements preclude the use of a fuel of high specific gravity. In cold weather, fuels of low cloud point are required although, if careful attention is paid to the designs of a vehicle fuel system, the limit of operability may well be the pour point. The design of the fuel system is particularly important if the full benefit of pour-point-depressant additives is to be realized.

Download or read book A Study of the Effect of Fuel Properties Upon Diesel Engine Combustion written by Joseph C. Firey and published by . This book was released on 1941 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of the Low Temperature Performance of Trucks Operating on Low Cetane Diesel Fuel written by S. J. Cartwright and published by . This book was released on 1987 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: An anticipated increase in diesel fuel demand and wider use of cracked and synthetic distillate fuel components prompted a study to assess the effect of such changes in fuel composition on truck cold weather startup and operability. A 2-year program was begun in 1985, using a Caterpillar 3406 heavy duty test engine for combustion tests and Class 8 trucks for cold starting and pull-away driving performance tests on the all weather chassis dynamometer. Six fuels were blended to represent current and potential future quality Canadian diesel fuels, as defined by the Canadian General Standards Board.

Download or read book The Influence of Fuel Characteristics on Diesel Engine Combustion and Performance by David Randall Kent Jr written by David Randall Kent and published by . This book was released on 1949 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Butyl Nitrate on Combustion Characteristics of Diesel Fuels written by Weichien Chow and published by . This book was released on 1949 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: