Download or read book Cold start Emissions of an SI Engine Using Ethanol gasoline Blended Fuel written by Rong-Horng Chen and published by . This book was released on 2011 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Pollution from Ground Transportation written by Roger Gorham and published by United Nations Publications. This book was released on 2002 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt: There is a growing awareness of the role of the transport sector in efforts aimed at achieving sustainable development. Transport poses a dilemma in that it is necessary for economic and social development, yet it accounts for about 25 per cent of total commercial energy consumed worldwide, and is associated with greenhouse gas emissions, noise pollution and land use impacts. Demand for transport services is expected to grow considerably as economic growth occurs in developing countries and the trend toward urbanisation and globalisation in world trade continues. This report was prepared as part of the activities of the joint United Nations/World Bank project entitled Global Initiatives on Transport Emissions (GITE), and seeks to provide guidance to policy makers on sustainable transport development in both developed and developing countries.
Download or read book Particulate Matter Emissions from a Direct Injection Spark Ignition Engine Under Cold fast idle Conditions for Ethanol gasoline Blends written by Iason Dimou and published by . This book was released on 2011 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: In an effort to build internal combustion engines with both reduced brake-specific fuel consumption and better emission control, engineers developed the Direct Injection Spark Ignition (DISI) engine. DISI engines combine the specific higher output of the spark ignition engine, with the better efficiency of the compression ignition engine at part load. Despite their benefits, DISI engines still suffer from high hydrocarbon, NO2 and particulate matter (PM) emissions. Until recently, PM emissions have received relatively little attention, despite their severe effects on human health, related mostly to their size. Previous research indicates that almost 80% of the PM is emitted during the first few minutes of the engine's operation (cold-start-fast-idling period). A proposed solution for PM emission reduction is the use of fuel blends with ethanol. The present research experimentally measures the effect of ethanol content in fuel on PM formation in the combustion chamber of a DISI engine during the cold-start period. A novel sampling system has been designed and combined with a Scanning Mobility Particle Sizer (SMPS) system, in order to measure the particulate matter number (PN) concentration 15 cm downstream from the exhaust valves of a DISI engine, for a temperature range between 0 and 40"C, under low load operation. Seven gasohol fuels have been tested with the ethanol content varying from 0% (EO) up to 85% (E85). For E10 to E85, PN modestly increases when the engine coolant temperature (ECT) is lowered. The PN distributions, however, are insensitive to the ethanol content of the fuel. The total PN for EQ is substantially higher than for the gasohol fuels, at ECT below 20'C. However, for ECT higher than 20'C, the total PN values (obtained from integrating the PN distribution from 15 to 350 nm) are approximately the same for all fuels. This sharp change in PN from EQ to E10 is confirmed by running the tests with E2.5 and E5; the midpoint of the transition occurs at approximately E5. Because the fuels' evaporating properties do not change substantially from EQ to E10, the significant change in PN is attributed to the particulate matter formation chemistry.
Download or read book An Overview of the Effects of Ethanol Gasoline Blends on SI Engine Performance Fuel Efficiency and Emissions written by Robert A. Stein and published by . This book was released on 2013 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Alcohol as an Alternative Fuel for Internal Combustion Engines written by Pravesh Chandra Shukla and published by Springer Nature. This book was released on 2021-05-15 with total page 273 pages. Available in PDF, EPUB and Kindle. Book excerpt: div="" This book covers different aspects related to utilization of alcohol fuels in internal combustion (IC) engines with a focus on combustion, performance and emission investigations. The focal point of this book is to present engine combustion, performance and emission characteristics of IC engines fueled by alcohol blended fuels such as methanol, ethanol and butanol. The contents also highlight the importance of alcohol fuel for reducing emission levels. Possibility of alcohol fuels for marine applications has also been discussed. This book is a useful guide for researchers, academics and scientists. ^
Download or read book Control Strategy for Hydrocarbon Emissions in Turbocharged Direct Injection Spark Ignition Engines During Cold start written by Kevin David Cedrone and published by . This book was released on 2013 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: Gasoline consumption and pollutant emissions from transportation are costly and have serious, demonstrated environmental and health impacts. Downsized, turbocharged direct-injection spark ignition (DISI) gasoline engines consume less fuel and achieve superior performance compared with conventional port fuel injected spark ignition (PFI-SI) engines. Although more efficient, turbocharged DISI engines have new emissions challenges during cold start. DISI fuel injection delivers more liquid fuel into the combustion chamber, increasing the emissions of unburned hydrocarbons. The turbocharger slows down activation (warm-up) of the catalytic exhaust after-treatment system. The objective of this research is to find a control strategy that: 1. Accelerates warm-up of the catalyst, and 2. Maintains low emissions of unburned hydrocarbons (UBHCs) during the catalyst warm-up process. This research includes a broad experimental survey of engine behaviour and emission response for a modern turbocharged DISI engine. The study focuses on the idle period during cold-start for which DISI engine emissions are worst. Engine experiments and simulations show that late and slow combustion lead to high exhaust gas temperatures and mass flow rate for fast warm-up. However, late and slow combustion increase the risk of partial-burn misfire. At the misfire limit for each parameter, the following conclusions are drawn: 1. Late ignition timing is the most effective way to increase exhaust enthalpy flow rate for fast catalyst warm-up. 2. By creating a favourable spatial fuel-air mixture stratification, split fuel injection can simultaneously retard and stabilize combustion to improve emissions and prevent partial-burn misfire. 3. Excessive trapped residuals from long valve overlap limit the potential for valve timing to reduce cold-start emissions. 4. Despite their more challenging evaporation characteristics, fuel blends with high ethanol content showed reasonable emissions behaviour and greater tolerance to late combustion than neat gasoline. 5. Higher exhaust back-pressure leads to high exhaust temperature during the exhaust stroke, leading to significantly more post-flame oxidation. 6. Post-flame oxidation in the combustion chamber and exhaust system play a critical role in decreasing the quantity of catalyst-in emissions due to hydrocarbons that escape primary (flame) combustion. A cold start strategy combining late ignition, 15% excess air, and high exhaust backpressure yielded the lowest cumulative hydrocarbon emissions during cold start.
Download or read book Handbook of Cellulosic Ethanol written by Ananda S. Amarasekara and published by John Wiley & Sons. This book was released on 2013-12-17 with total page 608 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive coverage on the growing science and technologyof producing ethanol from the world's abundant cellulosicbiomass The inevitable decline in petroleum reserves and its impact ongasoline prices, combined with climate change concerns, havecontributed to current interest in renewable fuels. Bioethanol isthe most successful renewable transport fuel—with corn andsugarcane ethanol currently in wide use as blend-in fuels in theUnited States, Brazil, and a few other countries. However, thereare a number of major drawbacks in these first-generation biofuels,such as their effect on food prices, net energy balance, and poorgreenhouse gas mitigation. Alternatively, cellulosic ethanol can beproduced from abundant lignocellulosic biomass forms such asagricultural or municipal wastes, forest residues, fast growingtrees, or grasses grown in marginal lands, and should be produciblein substantial amounts to meet growing global energy demand. The Handbook of Cellulosic Ethanol covers all aspects ofthis new and vital alternative fuel source, providing readers withthe background, scientific theory, and recent research progress inproducing cellulosic ethanol via different biochemical routes, aswell as future directions. The seventeen chapters includeinformation on: Advantages of cellulosic ethanol over first-generation ethanolas a transportation fuel Various biomass feedstocks that can be used to make cellulosicethanol Details of the aqueous phase or cellulolysis route,pretreatment, enzyme or acid saccharification, fermentation,simultaneous saccharification fermentation, consolidatedbioprocessing, genetically modified microorganisms, and yeasts Details of the syngas fermentation or thermochemical route,gasifiers, syngas cleaning, microorganisms for syngas fermentation,and chemical catalysts for syngas-to-ethanol conversion Distillation and dehydration to fuel-grade ethanol Techno-economical aspects and the future of cellulosicethanol Readership Chemical engineers, chemists, and technicians working onrenewable energy and fuels in industry, research institutions, anduniversities. The Handbook can also be used by studentsinterested in biofuels and renewable energy issues.
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 Methanol written by Avinash Kumar Agarwal and published by Springer Nature. This book was released on 2021-05-22 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph focuses on methanol and its utilization in transportation sector, namely in spark ignition (SI) engines. The contents focus on methanol production and presents a variety of production technologies from different feedstocks. The potential of methanol utilization in transportation in SI engines is discussed, its challenges, limitations, aspects related to its utilization and current global use of methanol are also presented. The book also contains chapters related to pollutant formation and exhaust emissions from methanol fuelled SI engines, one chapter is focused specifically on formaldehyde emissions, which possesses one of the greatest challenges of methanol use in IC engines. Readers will learn about the production aspects of methanol, its potential as a sustainable fuel, its utilization in SI engine and the effect of methanol and its utilization techniques on engine performance, combustion, exhaust emissions, efficiency and other important parameters. This volume will be a useful guide for professionals, post-graduate students involved in alternative fuels, spark ignition engines, and environmental research.
Download or read book Alternative Fuels and Advanced Combustion Techniques as Sustainable Solutions for Internal Combustion Engines written by Akhilendra Pratap Singh and published by Springer Nature. This book was released on 2021-05-15 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph covers different aspects related to utilization of alternative fuels in internal combustion (IC) engines with a focus on biodiesel, dimethyl ether, alcohols, biogas, etc. The focal point of this book is to present engine combustion, performance and emission characteristics of IC engines fueled by these alternative fuels. A section of this book also covers the potential strategies of utilization of these alternative fuels in an energy efficient manner to reduce the harmful pollutants emitted from IC engines. It presents the comparative analysis of different alternative fuels in a variety of engines to show the appropriate alternative fuel for specific types of engines. This book will prove useful for both researchers as well as energy experts and policy makers.
Download or read book Experimental Investigations on Methyl Alcohol Gasoline Blend Fueled Catalytic Coated Two Stroke Si Engine written by Dr. KOLLIPARA KISHOR and published by Archers & Elevators Publishing House. This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in IC Engines and Combustion Technology written by Ashwani K. Gupta and published by Springer Nature. This book was released on 2020-08-18 with total page 939 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprises select peer-reviewed proceedings of the 26th National Conference on IC Engines and Combustion (NCICEC) 2019 which was organised by the Department of Mechanical Engineering, National Institute of Technology Kurukshetra under the aegis of The Combustion Institute-Indian Section (CIIS). The book covers latest research and developments in the areas of combustion and propulsion, exhaust emissions, gas turbines, hybrid vehicles, IC engines, and alternative fuels. The contents include theoretical and numerical tools applied to a wide range of combustion problems, and also discusses their applications. This book can be a good reference for engineers, educators and researchers working in the area of IC engines and combustion.
Download or read book Cold Start and Hydrocarbon Emissions of a Spark Ignition Engine Fuelled with Ethanol gasoline Mixtures written by Benjamin David Waters and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years there has been a renewed interest in the use of ethanol as a future fuel for spark ignition engines. The finite availability of oil coupled with concerns about global warming and CO2 emissions has led to an increase in the use of ethanol which is produced from biomass. Generally ethanol is blended with gasoline to make an automotive fuel with the most common blend being E85 (85% ethanol and 15% gasoline by volume), which is used in Sweden and in the USA. Unlike gasoline, ethanol is a single component fuel which has a low volatility especially at low temperatures which means that cold-starting a spark ignition engine with ethanol-gasoline fuel blends is more difficult. In Europe cold-starting emission testing must be completed at ambient temperature and -7°C. During cold-starting tests with ethanol-gasoline blends high fuelling levels are required to form a combustible mixture and start the engine which results in high hydrocarbon emissions. This study investigates the start performance of a range of ethanol-gasoline blends in a port fuel injected spark ignition engine. Tests are completed at both ambient temperature at -rc and the start performance is characterised by the fuelling levels required to start the engine, the emissions of hydrocarbons and the fuel unaccounted for during the test. The optimum first start fuelling level is highly dependent on the proportion of ethanol in the fuel. The lower volatility of the ethanol fuel blends meant that it is harder to form a combustible mixture without injecting high levels of fuel. The high fuel injection rates result in high levels of liquid fuel being inducted into the cylinder which causes high HC emissions and fuel unaccounted for during the start. Under ambient temperature starts E 10 and E25 offer start performance benefits over gasoline, whilst E50 and in some aspects E75 are comparable to gasoline. E85 fuel results in considerably higher emissions of HCs and fuel unaccounted for than gasoline during ambient temperature starts. At -rc the start performance with ethanol suffers compared to gasoline. When using E10 and E25 the start performance is comparable to gasoline, but with E50 and the higher proportion ethanol fuel blends the start performance becomes far poorer. With E85 the mass of fuel emitted from the engine as un-burnt HCs during a -rc start is seven times the quantity with gasoline. Hardware modifications were made to the engine in order to try to improve the start performance of -rc E85 starts. Of the modifications tested heating the fuel within the fuel rail produced the biggest start improvement followed by heating the intake air. An extended cranking period prior to the start of the test only produced a small improvement in start performance and is not worthwhile compared to the energy needed to crank the engine. With both fuel rail and intake air heating the start fuelling level can be 40.5% below the baseline E85 level and peak HC emissions are reduced by 30.5%. The low volatility of E85 meant that even when incorporating the hardware modifications, the start performance of the engine is still not comparable to the standard engine running on gasoline due to high emissions of HCs. When cold-starting, especially at low temperatures, the use of high proportion ethanol-gasoline fuel blends is not suitable if low emissions of HCs are a priority. Longer duration tests were also completed with different ethanol-gasoline fuel blends in order to investigate their influence on engine warm-up characteristics. Larger proportions of ethanol within the fuel resulted in higher engine work output and lower heat rejection to the coolant and oil. With E 100 it takes 7.2% longer for the thermostat to open compared to gasoline. The warm-up tests also showed that the exhaust gas temperature is lower with ethanol in the fuel, which will result in a longer period before the catalyst lights-off. A higher proportion of ethanol in the fuel results in lower NOx emissions due to reduced peak temperatures within the engine.
Download or read book Reduction of Hydrocarbons in the Cold Start in an Alcohol Burning Internal Combustion Engine written by Ryan Kyle Gehmlich and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Alcohol fuels offer a potential alternative to gasoline in modern spark ignition engines. Benefits include reduction in greenhouse gas emissions, lesser dependence on foreign oil assets, and increased thermal efficiency. However, due to their large latent heats of vaporization and low vapor pressures, it can be difficult to produce a flammable vapor composition during the cold start transient. Various methods have been introduced to compensate for this deficiency when running engines on pure or highly concentrated alcohol fuels. One proposed method is the addition of a hydrogen-rich gas to the intake during the cold start transient to open the flammability limits of the mixture to a wider and more stable range. While several studies have investigated cold start performance and reliability using alcohol fuels, few have measured and reported on the actual engine-out cold start hydrocarbon emissions of systems using alcohol fuels enhanced by hydrogen. A 2-cylinder, 0.745 L 4-stroke engine was modified to run with hydrogen fumigation into a custom mixing chamber and intake manifold. The study compares cold start hydrocarbon emissions performance using ethanol and methanol fuels with and without hydrogen enrichment during the cold start transient. The hydrogen flow rate used for fumigation was 15 SLPM. Using moderately lean cold start calibrations, an average of 36% reductions in hydrocarbon emissions was measured for ethanol and 16% reduction for methanol. Furthermore, nitrogen oxide emissions were reduced by 34% for ethanol and 32% for methanol. Carbon monoxide emissions, however, increased by 100% and 21%, respectively. Further leaning of the cold start calibration was found to be possible, which would further reduce both hydrocarbon emissions and carbon monoxide emissions for the alcohol fuels.
Download or read book Automotive Spark Ignited Direct Injection Gasoline Engines written by F. Zhao and published by Elsevier. This book was released on 2000-02-08 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Vehicle and Automotive Engineering 2 written by Károly Jármai and published by Springer. This book was released on 2018-05-09 with total page 801 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the proceedings of the second Vehicle Engineering and Vehicle Industry conference, reflecting the outcomes of theoretical and practical studies and outlining future development trends in a broad field of automotive research. The conference’s main themes included design, manufacturing, economic and educational topics.
