Download or read book Crevice Volume Effect on Spark Ignition Engine Efficiency written by Patrick Michael Smith and published by . This book was released on 2013 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt: A set of experiments and a simulation study are completed to quantify the effect of the piston crevice on engine efficiency. The simulation study breaks down the loss mechanisms on brake efficiency at different displacement volumes (300 - 500 cc) and compression ratios (8-20). Experiments focus on indicated efficiencies for a narrow range of compression ratios (9.24- 12.57) with different piston crevice volumes. Piston crevice volume is increased in two steps by machining a groove into the piston top land, and is decreased by raising the top ring. Indicated efficiency is measured at various loads (0.4 - 1.0 bar MAP), speeds (1500, 2000, 2500 rpm), and coolant temperatures (50°C and 80°C). All data points compared in this study are recorded at MBT timing with a relative air-fuel ratio ([gamma]) of 1. For the baseline case (CR = 9.24, speed = 2000 rpm, coolant = 80°C), increased crevice volume results in an indicated efficiency degradation of 0.3-0.5%-points per 1000 mm3. This absolute decrease corresponds to a 1.2-1.5% relative decrease for a 100% increase in crevice volume; referenced to the control piston crevice modification. Decreasing crevice volume leads to a gain in indicated efficiency of 2.3-3.5%-points per 1000 mm3 , which corresponds to a 6.9- 11.8% relative increase for a 100% decrease in crevice volume; referenced to the control piston crevice modification. Results of the experimental investigation, when compared across compression ratio, engine speed, and coolant temperature, show that the crevice effect on efficiency is largely independent of these three parameters. Large gains from decreased piston crevice volume prompt renewed discussions on piston top land, top ring, and crown design.
Download or read book Assessment of Fuel Economy Technologies for Light Duty Vehicles written by National Research Council and published by National Academies Press. This book was released on 2011-06-03 with total page 373 pages. Available in PDF, EPUB and Kindle. Book excerpt: Various combinations of commercially available technologies could greatly reduce fuel consumption in passenger cars, sport-utility vehicles, minivans, and other light-duty vehicles without compromising vehicle performance or safety. Assessment of Technologies for Improving Light Duty Vehicle Fuel Economy estimates the potential fuel savings and costs to consumers of available technology combinations for three types of engines: spark-ignition gasoline, compression-ignition diesel, and hybrid. According to its estimates, adopting the full combination of improved technologies in medium and large cars and pickup trucks with spark-ignition engines could reduce fuel consumption by 29 percent at an additional cost of $2,200 to the consumer. Replacing spark-ignition engines with diesel engines and components would yield fuel savings of about 37 percent at an added cost of approximately $5,900 per vehicle, and replacing spark-ignition engines with hybrid engines and components would reduce fuel consumption by 43 percent at an increase of $6,000 per vehicle. The book focuses on fuel consumption-the amount of fuel consumed in a given driving distance-because energy savings are directly related to the amount of fuel used. In contrast, fuel economy measures how far a vehicle will travel with a gallon of fuel. Because fuel consumption data indicate money saved on fuel purchases and reductions in carbon dioxide emissions, the book finds that vehicle stickers should provide consumers with fuel consumption data in addition to fuel economy information.
Download or read book The Effect of Compression Ratio on Performance of a Single Cylinder Spark Ignition Engine Fueled with Producer Gas Generated from Rice Hulls written by Inigo Reyes Camacho 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 Flow in the Piston cylinder ring Crevices of a Spark ignition Engine written by M. Namazian and published by . This book was released on 1982 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect Of Compression Ratio On The Ability To Burn Lean Fuel Air Mixtures In A Spark Ignition Engine written by David H. Holkeboer and published by . This book was released on 1961 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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.
Download or read book The Effects of Crevices on the Engine out Hydrocarbon Emissions in Spark Ignition Engines written by Kyoungdoug Min and published by . This book was released on 1993 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Automotive Emissions Regulations and Exhaust Aftertreatment Systems written by John Kasab and published by SAE International. This book was released on 2020-08-31 with total page 464 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this book is to present a fundamental development of the science and engineering underlying the design of exhaust aftertreatment systems for automotive internal combustion engines. No pre-requisite knowledge of the field is required: our objective is to acquaint the reader, whom we expect to be new to the field of emissions control, with the underlying principles, control methods, common problems, and fuel effects on catalytic exhaust aftertreatment devices. We do this in hope that they can better understand the previous and current generations of emissions control, and improve upon them. This book is designed for the engineer, researcher, designer, student, or any combination of those, who is concerned with the control of automotive exhaust emissions. It includes discussion of theory and fundamentals applicable to hardware development.
Download or read book Advanced Thermodynamics for Engineers written by D. Winterbone and published by Butterworth-Heinemann. This book was released on 1996-11-01 with total page 399 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although the basic theories of thermodynamics are adequately covered by a number of existing texts, there is little literature that addresses more advanced topics. In this comprehensive work the author redresses this balance, drawing on his twenty-five years of experience of teaching thermodynamics at undergraduate and postgraduate level, to produce a definitive text to cover thoroughly, advanced syllabuses. The book introduces the basic concepts which apply over the whole range of new technologies, considering: a new approach to cycles, enabling their irreversibility to be taken into account; a detailed study of combustion to show how the chemical energy in a fuel is converted into thermal energy and emissions; an analysis of fuel cells to give an understanding of the direct conversion of chemical energy to electrical power; a detailed study of property relationships to enable more sophisticated analyses to be made of both high and low temperature plant and irreversible thermodynamics, whose principles might hold a key to new ways of efficiently covering energy to power (e.g. solar energy, fuel cells). Worked examples are included in most of the chapters, followed by exercises with solutions. By developing thermodynamics from an explicitly equilibrium perspective, showing how all systems attempt to reach a state of equilibrium, and the effects of these systems when they cannot, the result is an unparalleled insight into the more advanced considerations when converting any form of energy into power, that will prove invaluable to students and professional engineers of all disciplines.
Download or read book Emission Control and Fuel Economy written by John H Johnson and published by SAE International. This book was released on 2005-06-27 with total page 700 pages. Available in PDF, EPUB and Kindle. Book excerpt: Emission and fuel economy regulations and standards are compelling manufacturers to build ultra-low emission vehicles. As a result, engineers must develop spark-ignition engines with integrated emission control systems that use reformulated low-sulfur fuel. Emission Control and Fuel Economy for Port and Direct Injected SI Engines is a collection of SAE technical papers that covers the fundamentals of gasoline direct injection (DI) engine emissions and fuel economy, design variable effects on HC emissions, and advanced emission control technology and modeling approaches. All papers contained in this book were selected by an accomplished expert as the best in the field; reprinted in their entirety, they present a pathway to integrated emission control systems that meet 2004-2009 EPA standards for light-duty vehicles.
Download or read book Pounder s Marine Diesel Engines and Gas Turbines written by Malcolm Latarche and published by Butterworth-Heinemann. This book was released on 2020-12-01 with total page 958 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pounder’s Marine Diesel Engines and Gas Turbines, Tenth Edition, gives engineering cadets, marine engineers, ship operators and managers insights into currently available engines and auxiliary equipment and trends for the future. This new edition introduces new engine models that will be most commonly installed in ships over the next decade, as well as the latest legislation and pollutant emissions procedures. Since publication of the last edition in 2009, a number of emission control areas (ECAs) have been established by the International Maritime Organization (IMO) in which exhaust emissions are subject to even more stringent controls. In addition, there are now rules that affect new ships and their emission of CO2 measured as a product of cargo carried. Provides the latest emission control technologies, such as SCR and water scrubbers Contains complete updates of legislation and pollutant emission procedures Includes the latest emission control technologies and expands upon remote monitoring and control of engines
Download or read book Handbook of Air Pollution from Internal Combustion Engines written by Eran Sher and published by Academic Press. This book was released on 1998-03-20 with total page 689 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook is an important and valuable source for engineers and researchers in the area of internal combustion engines pollution control. It provides an excellent updated review of available knowledge in this field and furnishes essential and useful information on air pollution constituents, mechanisms of formation, control technologies, effects of engine design, effects of operation conditions, and effects of fuel formulation and additives. The text is rich in explanatory diagrams, figures and tables, and includes a considerable number of references. An important resource for engineers and researchers in the area of internal combustion engines and pollution control Presents and excellent updated review of the available knowledge in this area Written by 23 experts Provides over 700 references and more than 500 explanatory diagrams, figures and tables
Download or read book Internal Combustion Engine Fundamentals written by John B. Heywood and published by McGraw-Hill Education. This book was released on 1988 with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text, by a leading authority in the field, presents a fundamental and factual development of the science and engineering underlying the design of combustion engines and turbines. An extensive illustration program supports the concepts and theories discussed.
Download or read book Fossil Energy written by Ripudaman Malhotra and published by Springer Science & Business Media. This book was released on 2012-12-12 with total page 628 pages. Available in PDF, EPUB and Kindle. Book excerpt: The word sustainability shares its root with sustenance. In the context of modern society, sustenance is inextricably linked to the use of energy. Fossil Energy provides an authoritative reference on all aspects of this key resource, which currently represents nearly 85% of global energy consumption. Gathering 16 peer-reviewed entries from the Encyclopedia of Sustainability Science and Technology, the chapters provide comprehensive, yet concise coverage of fundamentals and current areas of research. Written by recognized authorities in the field, this volume represents an essential resource for scientists and engineers working on the development of energy resources, fossil or alternative, and reflects the essential role of energy supplies in supporting a sustainable future.
Download or read book Internal Combustion Engine Fundamentals 2E written by John Heywood and published by McGraw Hill Professional. This book was released on 2018-05-01 with total page 1055 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publisher's Note: Products purchased from Third Party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitlements included with the product. The long-awaited revision of the most respected resource on Internal Combustion Engines --covering the basics through advanced operation of spark-ignition and diesel engines. Written by one of the most recognized and highly regarded names in internal combustion engines this trusted educational resource and professional reference covers the key physical and chemical processes that govern internal combustion engine operation and design. Internal Combustion Engine Fundamentals, Second Edition, has been thoroughly revised to cover recent advances, including performance enhancement, efficiency improvements, and emission reduction technologies. Highly illustrated and cross referenced, the book includes discussions of these engines’ environmental impacts and requirements. You will get complete explanations of spark-ignition and compression-ignition (diesel) engine operating characteristics as well as of engine flow and combustion phenomena and fuel requirements. Coverage includes: • Engine types and their operation • Engine design and operating parameters • Thermochemistry of fuel-air mixtures • Properties of working fluids • Ideal models of engine cycles • Gas exchange processes • Mixture preparation in spark-ignition engines • Charge motion within the cylinder • Combustion in spark-ignition engines • Combustion in compression-ignition engines • Pollutant formation and control • Engine heat transfer • Engine friction and lubrication • Modeling real engine flow and combustion processes • Engine operating characteristics
Download or read book Clean Combustion Technologies written by Maria da Graca Carvalho and published by CRC Press. This book was released on 1999-05-11 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt: The seventy-five refereed papers in this volume represent the second in a series of biannual benchmarks for technologies that maximize energy conversion while minimizing undesirable emissions. Covering the entire range of industrial and transport combustion as well as strategies for energy R&D, these state-of-the-art contributions will be indispensable to mechanical and chemical engineers in academia and industry, and technical personnel in military, energy, and environmental agencies of government
Download or read book Internal Combustion Engines written by Institution of Mechanical Engineers and published by Woodhead Publishing Limited. This book was released on 2009-11-20 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Summary: This book contains the papers presented at the IMechE's Internal Combustion Engines: Performance, fuel economy and emissions conference, held at the IMechE, London, 8-9 December 2009. This conference, the latest in the successful biannual series on internal combustion engines, addresses drivers of change, technological developments and advances in the latest research. It examines developments for personal transport applications, though many of the drivers of change apply to light and heavy-duty, on and off-highway, transport and other sectors. The conference focuses on spark ignition engine technology for fuel economy, engine downsizing design and analysis, diesel engine design and analysis, and fuels. About the editors: The Institution of Mechanical Engineers (IMechE) is one of the leading professional engineering institutions in the world. Contents: SI ENGINES: TECHNOLOGY FOR FUEL ECONOMY A comparison of inlet valve operating strategies in a single cylinder spark ignition engine Future gasoline engine downsizing technologies - CO2 improvements and engine design considerations SI ENGINES: DOWNSIZING, DESIGN AND ANALYSIS Variable valve actuation enabled high efficiency gasoline engine A variable compression opposed-piston SI engine Application of high-precision absolute pressure sensors for gas exchange analysis DIESEL ENGINES: DESIGN AND ANALYSIS Effects of cooled and super-cooled low pressure EGR systems on the LD diesel engine performances Effect of compression ratio on combustion stability and performance of a DI diesel engine under cold conditions Effect of charge density on emissions in a HD-LTC diesel engine by retarding intake valve timing and rising boost pressure EMISSIONS CONTROL: NOx AND PARTICULATES Measures to improve the NOx-PM trade off for passenger car Diesel engines at elevated engine load Low particulate combustion development of the JCB Dieselmax mid-range off highway engine Exhaust inorganic nanoparticle emissions from internal combustion engines FUELS AND DIESEL ENGINES In-cylinder fuel injection and combustion analysis on 2nd generation bio-fuels in a single cylinder CR DI diesel optical engine Low NOx, low smoke operation of a diesel engine using a gasoline fuel Dual-fuel and low-carbon HGVs using bio methane Investigation of fuel properties and characterization of new generation alternative fuel for diesel engine LOW-TEMPERATURE COMBUSTION Hydrogen homogeneous charge compression ignition (HCCI) engine with DME as an ignition promoter HCCI simulation of a non reciprocating internal combustion engine The effects of exhaust back pressure on conventional and low temperature diesel combustion FUELS AND SI ENGINES Omnivore: an automotive flex-fuel 2-stroke engine with variable compression ratio, variable charge trapping and direct fuel injection A study of gasoline-alcohol blended fuels in a turbocharged DISI engine The nature of "superknock" and its origins in SI engines
