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Book Low cetane Fuel Performance in a Direct injection Spark assisted Diesel Engine

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:

Book Use of Spark Ignition of a Central Fuel Cloud to Allow Diesel Operation with Low Cetane Fuels

Download or read book Use of Spark Ignition of a Central Fuel Cloud to Allow Diesel Operation with Low Cetane Fuels written by David Robert Stevenson and published by . This book was released on 1986 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Cost Effectiveness and Deployment of Fuel Economy Technologies for Light Duty Vehicles

Download or read book Cost Effectiveness and Deployment of Fuel Economy Technologies for Light Duty Vehicles written by National Research Council and published by National Academies Press. This book was released on 2015-09-28 with total page 812 pages. Available in PDF, EPUB and Kindle. Book excerpt: The light-duty vehicle fleet is expected to undergo substantial technological changes over the next several decades. New powertrain designs, alternative fuels, advanced materials and significant changes to the vehicle body are being driven by increasingly stringent fuel economy and greenhouse gas emission standards. By the end of the next decade, cars and light-duty trucks will be more fuel efficient, weigh less, emit less air pollutants, have more safety features, and will be more expensive to purchase relative to current vehicles. Though the gasoline-powered spark ignition engine will continue to be the dominant powertrain configuration even through 2030, such vehicles will be equipped with advanced technologies, materials, electronics and controls, and aerodynamics. And by 2030, the deployment of alternative methods to propel and fuel vehicles and alternative modes of transportation, including autonomous vehicles, will be well underway. What are these new technologies - how will they work, and will some technologies be more effective than others? Written to inform The United States Department of Transportation's National Highway Traffic Safety Administration (NHTSA) and Environmental Protection Agency (EPA) Corporate Average Fuel Economy (CAFE) and greenhouse gas (GHG) emission standards, this new report from the National Research Council is a technical evaluation of costs, benefits, and implementation issues of fuel reduction technologies for next-generation light-duty vehicles. Cost, Effectiveness, and Deployment of Fuel Economy Technologies for Light-Duty Vehicles estimates the cost, potential efficiency improvements, and barriers to commercial deployment of technologies that might be employed from 2020 to 2030. This report describes these promising technologies and makes recommendations for their inclusion on the list of technologies applicable for the 2017-2025 CAFE standards.

Book Mixing controlled Combustion of Low cetane Fuels

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.

Book The Use of Auxiliary Ignition Devices to Improve the Combustion of a Low Cetane

Download or read book The Use of Auxiliary Ignition Devices to Improve the Combustion of a Low Cetane written by Bradlee J. Stroia and published by . This book was released on 1987 with total page 366 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Characteristics and Control of Low Temperature Combustion Engines

Download or read book Characteristics and Control of Low Temperature Combustion Engines written by Rakesh Kumar Maurya and published by Springer. This book was released on 2017-11-03 with total page 553 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with novel advanced engine combustion technologies having potential of high fuel conversion efficiency along with ultralow NOx and particulate matter (PM) emissions. It offers insight into advanced combustion modes for efficient utilization of gasoline like fuels. Fundamentals of various advanced low temperature combustion (LTC) systems such as HCCI, PCCI, PPC and RCCI engines and their fuel quality requirements are also discussed. Detailed performance, combustion and emissions characteristics of futuristic engine technologies such as PPC and RCCI employing conventional as well as alternative fuels are analyzed and discussed. Special emphasis is placed on soot particle number emission characterization, high load limiting constraints, and fuel effects on combustion characteristics in LTC engines. For closed loop combustion control of LTC engines, sensors, actuators and control strategies are also discussed. The book should prove useful to a broad audience, including graduate students, researchers, and professionals Offers novel technologies for improved and efficient utilization of gasoline like fuels; Deals with most advanced and futuristic engine combustion modes such as PPC and RCCI; Comprehensible presentation of the performance, combustion and emissions characteristics of low temperature combustion (LTC) engines; Deals with closed loop combustion control of advanced LTC engines; State-of-the-art technology book that concisely summarizes the recent advancements in LTC technology. .

Book Effect of Low Cetane Fuels on Diesel Engine Performance

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:

Book Alternative Fuels and Advanced Vehicle Technologies for Improved Environmental Performance

Download or read book Alternative Fuels and Advanced Vehicle Technologies for Improved Environmental Performance written by Richard Folkson and published by Woodhead Publishing. This book was released on 2022-07-27 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alternative Fuels and Advanced Vehicle Technologies for Improved Environmental Performance: Towards Zero Carbon Transportation, Second Edition provides a comprehensive view of key developments in advanced fuels and vehicle technologies to improve the energy efficiency and environmental impact of the automotive sector. Sections consider the role of alternative fuels such as electricity, alcohol and hydrogen fuel cells, as well as advanced additives and oils in environmentally sustainable transport. Other topics explored include methods of revising engine and vehicle design to improve environmental performance and fuel economy and developments in electric and hybrid vehicle technologies. This reference will provide professionals, engineers and researchers of alternative fuels with an understanding of the latest clean technologies which will help them to advance the field. Those working in environmental and mechanical engineering will benefit from the detailed analysis of the technologies covered, as will fuel suppliers and energy producers seeking to improve the efficiency, sustainability and accessibility of their work. Provides a fully updated reference with significant technological advances and developments in the sector Presents analyses on the latest advances in electronic systems for emissions control, autonomous systems, artificial intelligence and legislative requirements Includes a strong focus on updated climate change predictions and consequences, helping the reader work towards ambitious 2050 climate change goals for the automotive industry

Book Advances in Compression Ignition Natural Gas Diesel Dual Fuel Engines

Download or read book Advances in Compression Ignition Natural Gas Diesel Dual Fuel Engines written by Hongsheng Guo and published by Frontiers Media SA. This book was released on 2021-03-23 with total page 125 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.