Download or read book Investigation of Dual Fuel Diesel Engine with Hydrogen and Lpg Fuel written by Devdas Lata and published by LAP Lambert Academic Publishing. This book was released on 2012-07 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the period of centuries, fossil fuels have not only been catering to our basic energy needs, but also have contributed significantly to the growth rate of civilization. But its ever-increasing consumption rate and rapid depletion of the known reservoirs are a matter of serious concern. Due to the increasing demand for energy and also in view of the deteriorating environment, it has become essential not only to use existing liquid petroleum fuels efficiently but also to explore other sources of energy. The gaseous fuels like natural gas, producer gas, bio-gas, hydrogen, and liquefied petroleum gas (LPG) etc. are the promising alternative fuels. These gases are also, in general, less polluting. The demand for convenient and environmentally acceptable fuels has been growing continuously. Hydrogen is one such fuel which when burnt either alone or in combination with other gaseous fuels has the potential to meet various energy needs. It also provides environmental advantages.
Download or read book EXPERIMENTAL AND COMPUTATIONAL INVESTIGATION OF DUAL FUEL DIESEL NATURAL GAS RCCI COMBUSTION IN A HEAVY DUTY DIESEL ENGINE written by and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Combustion Aerodynamics written by János Miklós Beér and published by . This book was released on 1983 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigating the Performance and Emission Characteristics of Diesel LPG Engine Operation written by Ngang Emmanuel Anye and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the last couple of decades, attention has been placed on reducing atmospheric emissions globally, including the enforcement of stricter requirements which target emissions from internal combustion engines. This is not surprising considering the spate of public attention about the health impacts of atmospheric pollution. Then again there are concerns about their environmental impact. Consequently, engine developers, end-users, and researchers, increasingly are reconsidering the century-long idea of dual fuel engines. While there have been successful attempts to develop viable, sustainable alternatives to power diesel engines, the extent to which engine performance and emissions may be affected remains unknown. Therefore, this study evaluates the performance and emission characteristics of a diesel engine modified to run simultaneously with diesel and liquefied petroleum gas (LPG). The aim of this research is to numerically investigate the performance and emission characteristics associated with dual fuel engine operation (wherein LPG and diesel fuels are simultaneously used) with regards to the diesel engine operation at various operating regimes, taking into consideration different fuel mass ratios. With this in mind, this study presents a one-dimensional model developed using AVL BOOST to simulate the diesel and diesel-LPG engine operational modes. The model is calibrated using the peak cylinder pressure, the timing of the peak cylinder pressure, power and torque. For the maximum LPG scenario (70% diesel and 30% LPG) investigated at 2435 rpm, compared to the diesel engine operation, the maximum cylinder pressure was shown to increase from 77.16 bar to 93.42 bar representing an increase of 21.07%. Additionally, at 2435 rpm, the results from the study suggest a fairly linear increment in power when LPG mass ratio in the diesel-LPG fuel mixture is increased from 10 to 30%. It is remarkable that the highest mass ratio of LPG used in the diesel-LPG fuel mixture produces the highest brake thermal efficiency at 2435 rpm. Regardless of the speed, increasing the LPG fuel mass ratio in the diesel-LPG fuel mixture leads to a reduction in the nitrogen oxide (NOx) emissions because the formation of NOx depends on the oxygen concentration and the presence of LPG,leads to reduction of the oxygen concentration at the onset of NOx formation whichconsequently causes the NOx emissions to reduce.
Download or read book Modeling of Hydrogen Aided Diesel Producer Gas Dual Fuel CI Engine written by Debasree Ghosh and published by LAP Lambert Academic Publishing. This book was released on 2015-03-23 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diminishing oil reserves and increasing power requirements are posing a steep challenge for researchers to search for alternative fuels and renewable energy sources. So there is a tremendous need for alternative fuels or renewable energy sources or to develop technology to reduce consumption of these fuels especially liquid fuels.Nowadays natural gas, LPG, methane, ethanol, hydrogen, producer gas, vegetable oil, and burned edible oil etc. are under research to use them as alternative fuels. Producer gas can be a used as alternative fuel because of various reasons. This research work presented, developed a combustion model for a dual fuel (Hydrogen aided Diesel-Producer gas) compression ignition (CI) engine for single constant pressure combustion process as well as constant volume and constant pressure combustion process. The work then analytically examines the performance of a CI engine with the minimum use of diesel fuel as pilot fuel, with producer gas and hydrogen as secondary fuel. The performance has been analyzed for work output and thermal efficiency.
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 Combustion Engines Development written by Günter P. Merker and published by Springer Science & Business Media. This book was released on 2011-09-24 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combustion Engines Development nowadays is based on simulation, not only of the transient reaction of vehicles or of the complete driveshaft, but also of the highly unsteady processes in the carburation process and the combustion chamber of an engine. Different physical and chemical approaches are described to show the potentials and limits of the models used for simulation.
Download or read book Optical Investigation of Diesel and Natural Gas Dual fuel Combustion written by Keith R. Dahl and published by . This book was released on 2018 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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
Download or read book Greener and Scalable E fuels for Decarbonization of Transport written by Avinash Kumar Agarwal and published by Springer Nature. This book was released on 2021-12-10 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights ways of using gaseous and liquid e-fuels like hydrogen (H2), methane (CH4), methanol (CH3OH), DME (CH3-O-CH3), Ammonia (NH3), synthetic petrol and diesel, etc in existing engines and their effects on tailpipe emissions. The contents also cover calibration and optimization procedure for adaptation of these fuels. the volume also discusses the economical aspect of these fuels. Chapters include recent results and are focused on current trends of automotive sector. This book will be of interest to those in academia and industry involved in fuels, IC engines, engine instrumentation, and environmental research.
Download or read book Proceedings of International Conference in Mechanical and Energy Technology written by Sanjay Yadav and published by Springer Nature. This book was released on 2020-06-01 with total page 799 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents selected peer-reviewed papers from the International Conference on Mechanical and Energy Technologies, which was held on 7–8 November 2019 at Galgotias College of Engineering and Technology, Greater Noida, India. The book reports on the latest developments in the field of mechanical and energy technology in contributions prepared by experts from academia and industry. The broad range of topics covered includes aerodynamics and fluid mechanics, artificial intelligence, nonmaterial and nonmanufacturing technologies, rapid manufacturing technologies and prototyping, remanufacturing, renewable energies technologies, metrology and computer-aided inspection, etc. Accordingly, the book offers a valuable resource for researchers in various fields, especially mechanical and industrial engineering, and energy technologies.
Download or read book Performance of Cng and Hydrogen in a Diesel Engine written by Saroj Acharya and published by . This book was released on 2011-02-16 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: Exhaustive experimental investigations were carried out with a diesel genset to evaluate the potential of using CNG, hydrogen and CNG - hydrogen blend as alternative fuels under dual fuel mode of operation. A commercial genset fitted with a six cylinder, naturally aspirated water cooled diesel engine was selected for this investigation. Comparisons of performance and emission characteristics between the neat diesel and dual fuel operation have been made for different pilot fuel injection timing and different concentrations of gaseous fuels under variable load conditions. Over the entire range of engine operation, the Brake Specific Energy Consumption (BSEC) showed an increasing trend with increasing amount of gaseous fuel substitution and was higher under low load operating conditions.
Download or read book Dual Fuel Diesel Engines written by Ghazi A. Karim and published by CRC Press. This book was released on 2015-03-02 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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,
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 Investigation of Diesel ethanol and Diesel gasoline Dual Fuel Combustion in a Single Cylinder Optical Diesel Engine written by Mahmoudreza Mirmohammadsadeghi and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogen and Diesel Combustion written by Probir Kumar Bose and published by LAP Lambert Academic Publishing. This book was released on 2012-02 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: The important motivations for exploring alternative fuel resources are energy security and air pollution, problems that are collectively calling into question the fundamental sustainability of the current energy system.Hydrogen-fuelled engines with near-zero emissions are a potential near-term option and a bridge to hydrogen fuel cell vehicles.With emission legislations getting more stringent, research studies have definitely established the advantages of extremely clean burning characteristics of hydrogen as a dual fuel in engines.But that said, the premium of using hydrogen as a green energy carrier needs to be augmented with studies on its potential to satisfy conventional engine combustion characteristics for ready deployment.In this present study, the performance and combustion analysis were carried out on an existing direct injection diesel engine at various load steppings using hydrogen inducted at different injection timings and injection durations.The findings of the study cater to its audience interested to employ such uses in practical diesel engines and also to those chartering a course of pursuance in the context of reducing emission from existing combustion engine
Download or read book Hydrogen Fumigation on HD Diesel Engine written by Emad Monemian and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The currently reported work was concerned with experimental and numerical evaluation of the potential to partially replace diesel with hydrogen fuel, which continues to attract attention as an alternative longer-term fuel solution. The experimental work was involved with the fumigation of hydrogen on a single cylinder HD diesel engine under two real-world driving conditions at low and mid loads. Highest practical hydrogen substitution ratios could increase indicated efficiency by up to 4.6 and 2.4% while reducing CO2 emissions by 58 and 32% at low and mid loads, respectively. Soot and CO emissions were reduced as more hydrogen was supplied, particularly at low load. The numerical study was made by using two distinct phenomenological models being run in parallel. While, an in-depth evaluation of the unique dual fuel combustion was possible, the arising errors were largely associated with lack of dual fuel burning velocity data, which will remain a key barrier to dual-fuel simulation.
