An Experimental Study Of Ethanol Diesel Dual Fuel Combustion For High Efficiency And Clean Heavy Duty Engines
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An Experimental Study Of Ethanol Diesel Dual Fuel Combustion For High Efficiency And Clean Heavy Duty Engines
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Author : Vinícius Bernardes Pedrozo
language : en
Publisher:
Release Date : 2017
An Experimental Study Of Ethanol Diesel Dual Fuel Combustion For High Efficiency And Clean Heavy Duty Engines written by Vinícius Bernardes Pedrozo and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
Experimental And Computational Investigation Of Dual Fuel Diesel Natural Gas Rcci Combustion In A Heavy Duty Diesel Engine
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Author :
language : en
Publisher:
Release Date : 2018
Experimental And Computational Investigation Of Dual Fuel Diesel Natural Gas Rcci Combustion In A Heavy Duty Diesel Engine written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
Abstract : Among the various alternative fuels, natural gas is considered as a leading candidate for heavy-duty applications due to its availability and applicability in conventional internal combustion diesel engines. Compared to their diesel counterparts natural gas fueled spark-ignited engines have a lower power density, reduced low-end torque capability, limited altitude performance, and ammonia emissions downstream of the three-way catalyst. The dual fuel diesel/natural gas engine does not suffer with the performance limitations of the spark-ignited concept due to the flexibility of switching between different fueling modes. Considerable research has already been conducted to understand the combustion behavior of dual fuel diesel/natural gas engines. As reported by most researchers, the major difficulty with dual fuel operation is the challenge of providing high levels of natural gas substitution, especially at low and medium loads. In this study extensive experimental and simulation studies were conducted to understand the combustion behavior of a heavy-duty diesel engine when operated with compressed natural gas (CNG) in a dual fuel regime. In one of the experimental studies, conducted on a 13 liter heavy-duty six cylinder diesel engine with a compression ratio of 16.7:1, it was found that at part loads high levels of CNG substitution could be achieved along with very low NOx and PM emissions by applying reactivity controlled compression ignition (RCCI) combustion. When compared to the diesel-only baseline, a 75% reduction in both NOx and PM emissions was observed at a 5 bar BMEP load point along with comparable fuel consumption values. Further experimental studies conducted on the 13 liter heavy-duty six cylinder diesel engine have shown that RCCI combustion targeting low NOx emissions becomes progressively difficult to control as the load is increased at a given speed or the speed is reduced at a given load. To overcome these challenges a number of simulation studies were conducted to quantify the in-cylinder conditions that are needed at high loads and low to medium engine speeds to effectively control low NOx RCCI combustion. A number of design parameters were analyzed in this study including exhaust gas recirculation (EGR) rate, CNG substitution, injection strategy, fuel injection pressure, fuel spray angle and compression ratio. The study revealed that lowering the compression ratio was very effective in controlling low NOx RCCI combustion. By lowering the base compression ratio by 4 points, to 12.7:1, a low NOx RCCI combustion was achieved at both 12 bar and 20 bar BMEP load points. The NOx emissions were reduced by 75% at 12 bar BMEP while fuel consumption was improved by 5.5%. For the 20 BMEP case, a 2% improvement in fuel consumption was achieved with an 87.5% reduction in NOx emissions. At both load points low PM emissions were observed with RCCI combustion. A low NOx RCCI combustion system has multiple advantages over other combustion approaches, these include; significantly lower NOx and PM emission which allows a reduction in aftertreatment cost and packaging requirements along with application of higher CNG substitution rates resulting in reduced CO2 emissions.
Application Of Clean Fuels In Combustion Engines
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Author : Gabriele Di Blasio
language : en
Publisher: Springer Nature
Release Date : 2022-01-04
Application Of Clean Fuels In Combustion Engines written by Gabriele Di Blasio and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-01-04 with Technology & Engineering categories.
This book discusses the impact of fuels characteristics and their effects on the combustion processes in internal combustion engines. It includes the analysis of a variety of biofuels (alcohol fuels and biodiesel) and biogases (natural gas, hydrogen, etc.), providing valuable information related to consequent effects on performance and emissions. The contents focus on recent results and current trends of fuel utilization in the transport sector. State-of-the-art of clean fuels application are also discussed. Thighs book will be of interest to those in academia and industry involved in fuels, IC engines, engine instrumentation, and environmental research.
Experimental And Numerical Study Of The Combustion And Emissions Of Natural Gas Diesel Dual Fuel Engine Under Different Engine Load Speed Conditions
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Author : Amin Yousefi
language : en
Publisher:
Release Date : 2019
Experimental And Numerical Study Of The Combustion And Emissions Of Natural Gas Diesel Dual Fuel Engine Under Different Engine Load Speed Conditions written by Amin Yousefi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with categories.
Universal concerns about degradation in air quality, stringent emissions regulations, energy scarcity, and global warming have prompted research and development of compressed ignition engines using alternative combustion concepts. Natural gas/diesel dual-fuel combustion is an advanced combustion concept for compression ignition diesel engines, which has attracted global attention in recent years. This combustion concept is accomplished by creating reactivity stratification in the cylinder via the use of two fuels characterized by distinctly different reactivities. The low reactivity and main fuel (i.e., natural gas) is firstly premixed with air and then charged into the cylinder through the intake manifold, and the high reactivity fuel (i.e., diesel) is then injected into the charged mixture through a direct injector. This combustion concept offers prominent benefits in terms of a significant reduction of particulate matter (PM) and sometimes nitrogen oxides (NOx) emissions while maintaining comparable fuel efficiency compared to diesel engine. However, low thermal efficiency and high greenhouse gas (GHG) emissions under low load conditions are major challenges which prevented the implementation of dual-fuel concept in commercial automative engines. The present study investigates different combustion approaches with the aim to enhance combustion performance and reduce emissions of unburned methane, CO, NOx, soot, and GHG of natural gas/diesel dual-fuel engines under different engine load-speed conditions. In particular, the main focus of this thesis is on low load conditions where GHG emissions of conventional natural gas/diesel dual-fuel engine is much higher than that of conventional diesel engine. Alongside the experimental study, a computational fluid dynamic (CFD) model is developed to help understand the behaviour of natural gas/diesel dual-fuel combustion process under different engine load-speed conditions. The studied approaches showed that the fuel efficiency and GHG emissions of natural gas/diesel dual-fuel engine can be significantly improved under low engine load conditions compared to diesel engine.
Dual Fuel Diesel Engines
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Author : Ghazi A. Karim
language : en
Publisher: CRC Press
Release Date : 2015-03-02
Dual Fuel Diesel Engines written by Ghazi A. Karim and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-03-02 with Technology & Engineering categories.
Dual-Fuel Diesel Engines offers a detailed discussion of different types of dual-fuel diesel engines, the gaseous fuels they can use, and their operational practices. Reflecting cutting-edge advancements in this rapidly expanding field, this timely book:Explains the benefits and challenges associated with internal combustion, compression ignition,
Advances In Clean Energy Technologies
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Author : Prashant V. Baredar
language : en
Publisher: Springer Nature
Release Date : 2021-05-30
Advances In Clean Energy Technologies written by Prashant V. Baredar and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-05-30 with Business & Economics categories.
This book presents select proceedings of the international conference on Innovations in Clean Energy Technologies (ICET 2020) and examines a range of durable, energy efficient and next-generation smart green technologies for sustainable future by reflecting on the trends, advances and development taking place all across the globe. The topics covered include smart technologies based product, energy efficient systems, solar and wind energy, carbon sequestration, green transportation, green buildings, energy material, biomass energy, smart cites, hydro power, bio-energy and fuel cell. The book also discusses various performance attributes of these clean energy technologies and their workability and carbon footprint. The book will be a valuable reference for beginners, researchers and professionals interested in clean energy technologies.
Advanced Engine Diagnostics
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Author : Avinash Kumar Agarwal
language : en
Publisher: Springer
Release Date : 2018-11-07
Advanced Engine Diagnostics written by Avinash Kumar Agarwal and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-11-07 with Technology & Engineering categories.
This book describes the discusses advanced fuels and combustion, emission control techniques, after-treatment systems, simulations and fault diagnostics, including discussions on different engine diagnostic techniques such as particle image velocimetry (PIV), phase Doppler interferometry (PDI), laser ignition. This volume bridges the gap between basic concepts and advanced research in internal combustion engine diagnostics, making it a useful reference for both students and researchers whose work focuses on achieving higher fuel efficiency and lowering emissions.
Biofueled Reciprocating Internal Combustion Engines
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Author : K.A. Subramanian
language : en
Publisher: CRC Press
Release Date : 2017-10-02
Biofueled Reciprocating Internal Combustion Engines written by K.A. Subramanian and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-10-02 with Technology & Engineering categories.
Biofuels such as ethanol, butanol, and biodiesel have more desirable physico-chemical properties than base petroleum fuels (diesel and gasoline), making them more suitable for use in internal combustion engines. The book begins with a comprehensive review of biofuels and their utilization processes and culminates in an analysis of biofuel quality and impact on engine performance and emissions characteristics, while discussing relevant engine types, combustion aspects and effect on greenhouse gases. It will facilitate scattered information on biofuels and its utilization has to be integrated as a single information source. The information provided in this book would help readers to update their basic knowledge in the area of "biofuels and its utilization in internal combustion engines and its impact Environment and Ecology". It will serve as a reference source for UG/PG/Ph.D. Doctoral Scholars for their projects / research works and can provide valuable information to Researchers from Academic Universities and Industries. Key Features: • Compiles exhaustive information of biofuels and their utilization in internal combustion engines. • Explains engine performance of biofuels • Studies impact of biofuels on greenhouse gases and ecology highlighting integrated bio-energy system. • Discusses fuel quality of different biofuels and their suitability for internal combustion engines. • Details effects of biofuels on combustion and emissions characteristics.
Duel Fuel Diesel Engine An Experimental Study
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Author : Ramesh D. K.
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2019-09-27
Duel Fuel Diesel Engine An Experimental Study written by Ramesh D. K. and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-09-27 with categories.
This study is an attempt at achieving diesel fuel equivalent performance from diesel engines with maximum substitution of diesel with renewable fuels. In this context the study has been designed to analyze the influence of B20 algae biodiesel as a pilot fuel in a biodiesel- biogas dual fuel engine, and results are compared to those of biodiesel and diesel operation at identical engine settings.Experiments were performed at various loads from 0 to 100 % of maximum load at a constant speed of 1500 rpm. In general, B20algae biodiesel is compatible with diesel in terms of performance and combustion characteristics. Dual fuel mode operation displayslower thermal efficiency and higher fuel consumption than for other fuel modes of the test run across the range of engine loads.Dual fuel mode displayed lower emissions of NOx and Smoke opacity while HC and CO concentrations were considerably higher as compared to other fuels. In dual fuel mode peak pressure and heat release rate were slightly higher compared to diesel and biodieselmode of operation for all engine loads.
Connecting Expertise Multidisciplinary Development For The Future
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Author : Seven Publicações
language : en
Publisher: Seven Editora
Release Date :
Connecting Expertise Multidisciplinary Development For The Future written by Seven Publicações and has been published by Seven Editora this book supported file pdf, txt, epub, kindle and other format this book has been release on with Antiques & Collectibles categories.