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 Investigation of the Performance and Emissions Characteristics of Dual Fuel Combustion in a Single Cylinder IDI Diesel Engine written by Johnnie L. Williams (Jr.) and published by . This book was released on 2018 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Author's Abstract: Restrictions in the allowable exhaust gas emissions of diesel engines has become a driving factor in the design, development, and implementation of internal combustion (IC) engines. A dual fuel research engine concept was developed and implemented in an indirect injected engine in order to research combustion characteristics and emissions for non-road applications. The experimental engine was operated at a constant speed and load 2400 rpm and 5.5 bar indicated mean effective pressure (IMEP). n-Butanol was port fuel injected at 10%, 20%, 30%, and 40% by mass fraction with neat ultra-low sulfur diesel (ULSD#2). Peak pressure, maximum pressure rise rates, and heat release rates all increased with the increasing concentration of n-Butanol. MPRR increased by 127% and AHRR increased by 30.5% as a result of the shorter ignition delay and combustion duration. Ignition delay and combustion duration were reduced by 3.6% and 31.6% respectively. This occurred despite the lower cetane number of n-Butanol as a result of increased mixing due to the port fuel injection of the alcohol. NOx and soot were simultaneously reduced by 21% and 80% respectively. Carbon monoxide and unburned hydrocarbons emissions were increased for the dual fuel combustion strategies due to valve overlap. Results display large emission reductions of harmful pollutants, such as NOx and soot.

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 Engine Performance Combustion and Emission Characteristics of a Diesel Engine Burning Gaseous diesel Dual Fuel written by Quan Zhou and published by . This book was released on 2016 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the present study, both gaseous emissions and particulate matter emissions were studied. Gaseous fuel-diesel dual fuel engine produces much higher brake specific carbon monoxide (BSCO) and hydrocarbon (BSHC) emissions, but lower brake specific particle mass concentration (BSPM) and nitrogen oxides (BSNOX) emissions. Regarding to the particle size distribution and number concentration, with the increase of engine load, the particle size distribution moves from small to large region. With gaseous fuel addition, the particle total number concentrations (TNC) and geometric mean diameters (GMD) of all dual fuel modes are decreased compared to that of neat diesel mode. In addition, the decreasing rate is increased with higher power substitution of gaseous fuel. Conclusively, the 20% methane-diesel dual fuel mode is observed to be the most effective operating mode that the BSNOX emissions and BSPM concentration reduced by 24.7% and 37.9% at the 80% engine load. In addition, it gives the best engine performance compared with other operating modes.

Download or read book Investigation of Combustion and Emission Characteristics of a Diesel Engine Fueled with Butanol diesel Blends written by Xuan Feng and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This work concentrates on investigating the combustion and emission characteristics of diesel engine running on butanol-diesel blends. The blending ratio of butanol to diesel was varied from 0 to 40 vol% using an increment of 10 vol%, and each blend was tested on a 2.7 L V6 common rail direction injection diesel engine equipped with an EGR system. The test was carried out under two engine loads at a constant engine speed, using various combinations of EGR ratios and injection timings. Test results indicate that butanol addition to engine fuel is able to substantially decrease soot emission from raw exhaust gas, while the change in NOx emissions varies depending on the butanol content and engine operating conditions. Increasing EGR ratio and retarding injection timing are effective approaches to reduce NOx emissions from combustion of butanol-diesel blends. But the engine control strategies need to be optimized in order to achieve low levels of both soot and NOx emissions, as well as a reasonable fuel economy.

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 Performance and Emission Characteristics of an Automotive Diesel Engine Using Biodiesel Fuel with the Influence of Air Intake Variables written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The air induction system plays a major role by providing necessary air charge for combustion to take place in an engine cylinder. The pressure drop across the air intake manifold is known to have a significant effect on the indicated power of the internal combustion engine. Most car manufacturers locate the air grill at the front of a vehicle to enhance the volumetric efficiency. However due to wading performance, for a sport utility vehicle like a Land Rover Freelander the air grill is located at the side of the front tyre. The air speed at the grill side is high and creates negative pressure, thus reducing the volumetric efficiency. Therefore, a thorough study of the design of the air induction system (AIS) with negative pressure at the air grill is vital, in order to fully understand the flow behavior in this AIS. Moreover, when the engine is equipped with turbocharger, the performance of the air intake system is also affected by the exhaust parameter which depends on the combustions of fuel in the engine cylinder. The properties of biodiesel are slightly different in density, viscosity and cetane number. These parameters are potentially affecting the combustion in engine cylinder. Thus, the investigation of the effect of fuel on the air intake system is vital for the study of the diesel engine operating with biodiesel. The analysis of the combustion of biodiesel in a V6 diesel engine includes the ignition delay, rate of heat release, in-cylinder peak pressure as well as the exhaust emissions. The study consists of 3 parts; (1) three-dimensional CFD analysis on the performance of the Land Rover Freelander AIS, (2) one-dimensional analysis of a V6 diesel engine with the effect of the AIS, (3) experimental study of a V6 diesel engine operating with RME and ULSD; The three-dimensional analyses on the performance 2 of a Freelander AIS have been conducted to study the effect of negative pressure on pressure-drop in the intake manifold. The results show that the magnit.

Download or read book Recent Technologies for Enhancing Performance and Reducing Emissions in Diesel Engines written by Basha, J. Sadhik and published by IGI Global. This book was released on 2020-02-21 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: In today’s global context, there has been extensive research conducted in reducing harmful emissions to conserve and protect our environment. In the automobile and power generation industries, diesel engines are being utilized due to their high level of performance and fuel economy. However, these engines are producing harmful pollutants that contribute to several global threats including greenhouse gases and ozone layer depletion. Professionals have begun developing techniques to improve the performance and reduce emissions of diesel engines, but significant research is lacking in this area. Recent Technologies for Enhancing Performance and Reducing Emissions in Diesel Engines is a pivotal reference source that provides vital research on technical and environmental enhancements to the emission and combustion characteristics of diesel engines. While highlighting topics such as biodiesel emulsions, nanoparticle additives, and mathematical modeling, this publication explores the potential additives that have been incorporated into the performance of diesel engines in order to positively affect the environment. This book is ideally designed for chemical and electrical engineers, developers, researchers, power generation professionals, mechanical practitioners, scholars, ecologists, scientists, graduate students, and academicians seeking current research on modern innovations in fuel processing and environmental pollution control.

Download or read book Diesel Fuel Component Contributions to Engine Emissions and Performance written by and published by . This book was released on 1994 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: The emissions characteristics of diesel engines are dominated by current engine design parameters as long as the fuels conform to the current industry-accepted specifications. The current and future emissions standard, are low enough that the fuel properties and compositions are starting to play a more significant role in meeting the emerging standards. The potential role of the fuel composition has been recognized by state and federal government agencies, and for the first time, fuel specifications have become part of the emissions control legislation. In this work, five different fuel feed and blend stocks were hydrotreated to two levels of sulfur and aromatic content. These materials were then each distilled to seven or eight fractions of congruent boiling points. After this, the raw materials and all of the fractions were characterized by a complement of tests from American Society for Testing and Materials and by hydrocarbon-type analyses. The sample matrix was subjected to a series of combustion bomb and engine tests to determine the ignition, combustion, and emissions characteristics of each of the 80 test materials.

Download or read book Proceedings of the 4th International Congress of Automotive and Transport Engineering AMMA 2018 written by Nicolae Burnete and published by Springer. This book was released on 2018-09-29 with total page 866 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume includes selected and reviewed papers from the 4th International Congress of Automotive and Transport Engineering, held in Cluj, Romania, in September 2018. Authors are experts from research, industry and universities coming from 14 countries worldwide. The papers are covering the latest developments in automotive vehicles and environment, advanced transport systems and road traffic, heavy and special vehicles, new materials, manufacturing technologies and logistics, accident research and analysis and innovative solutions for automotive vehicles. The conference is organized by SIAR (Society of Automotive Engineers from Romania) in cooperation with FISITA.

Download or read book Emission Characteristics of a Diesel Engine Operating with In Cylinder Gasoline and Diesel Fuel Blending written by Vitaly Y. Prikhodko and published by . This book was released on 2010 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Alternative Fuels for Compression Ignition Engines written by Zainal Ambri Abdul Karim and published by Springer. This book was released on 2018-02-19 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book examines the development and utilization of alternative fuels in order to reduce or control the environmental impact of internal combustion engine exhaust gases. Discussing alternative fuels such as dual fuel techniques, rubber seed/palm oil biodiesel, syngas dual-fuelling, water-in-diesel emulsions and gasification of date palm seeds, it is a valuable resource for researchers in the field of engine development and on alternative fuels.

Download or read book Diesel Emissions and Their Control written by Magdi K Khair and published by SAE International. This book was released on 2006-12-01 with total page 583 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book will assist readers in meeting today's tough challenges of improving diesel engine emissions, diesel efficiency, and public perception of the diesel engine. It can be used as an introductory text, while at the same time providing practical information that will be useful for experienced readers. This comprehensive book is well illustrated with more than 560 figures and 80 tables. Each main section is broken down into chapters that offer more specific and extensive information on current issues, as well as answers to technical questions.

Download or read book Design and Investigation of a Diesel Engine Operated on Pilot Ignited LPG written by and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis explores the idea of igniting LPG in a compression ignition diesel engine using pilot diesel injection as spark ignition medium. The main advancement in using this technology on current diesel engines is the establishment of a better balance between NOx and PM emissions without losing too much of the CO2 benefits of diesel. With the advent of common rail diesel engines, it is now possible to get control of pilot diesel injection and make the LPG and diesel control systems work together. Combined diesel and LPG operation is a new subject for engine research, so the thesis moves on to consider the results from detailed engine simulation studies that explore the potential benefits of the mix. Subsequent simulations of a modern four cylinder dCi engine suggest that with closer control over the pilot diesel injection, diesel like performance can be obtained, hopefully with less emissions than currently expected from diesel only operation. A single cylinder variable compression ratio research engine was developed to explore diesel /LPG dual fuel operation. A second generation common rail injection rig was also developed for the engine and for fuel spray characterisation. Engine experiments proved the concept of using a modest charge of pilot injected diesel for igniting a larger dose of port injected LPG. The experimental work results suggest that combining diesel common rail injection technology with the state of the art LPG injection systems, it is possible to establish a better balance between NOx/ PM emissions without losing too much of the CO2 benefits from the diesel operation.

Download or read book Issues in Renewable Energy Technologies 2011 Edition written by and published by ScholarlyEditions. This book was released on 2012-01-09 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt: Issues in Renewable Energy Technologies / 2011 Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Renewable Energy Technologies. The editors have built Issues in Renewable Energy Technologies: 2011 Edition on the vast information databases of ScholarlyNews.™ You can expect the information about Renewable Energy Technologies in this eBook to be deeper than what you can access anywhere else, as well as consistently reliable, authoritative, informed, and relevant. The content of Issues in Renewable Energy Technologies: 2011 Edition has been produced by the world’s leading scientists, engineers, analysts, research institutions, and companies. All of the content is from peer-reviewed sources, and all of it is written, assembled, and edited by the editors at ScholarlyEditions™ and available exclusively from us. You now have a source you can cite with authority, confidence, and credibility. More information is available at http://www.ScholarlyEditions.com/.

Download or read book Investigations of Advanced Injection and Combustion Strategies on DI Diesel Engine Performance and Emissions written by Raouf Mobasheri and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The main driving force behind this research was the need for cleaner and more efficient engines to meet the ever-increasing demands on the modern automobile's emissions. In recent years different studies have been carried out to analyze the combined effects of high-pressure injection, boost pressure, multiple injections, included spray angle and combustion chamber geometry. Though considerable research has shown these technologies can meet the low emission regulations, the careful optimization of the engine operating conditions is still required in order to get the full benefit of the different strategies. With these issues as motivation, the first important objective of this study was to gain a detailed understanding of the mechanisms through which fuel injection interacts with other engine parameters and influences diesel combustion and emissions, and hence to attempt to generalize the adoption of multiple injection strategies with regards to improving diesel engine performance. For this purpose, a modified parameter called "Homogeneity Factor of in-cylinder charge" (HF) was introduced and proposed as a new measure in combustion theory to analyze the combustion characteristics and air-fuel mixing process of diesel engines in more detail. The second part of this research builds upon a detail investigation on the included spray cone angle concept and explores further their use in conjunction with multiple-injection strategies in diesel engines. In addition, an investigation was performed in third phase of this research to analyze the effects of piston geometry on combustion, performance and exhaust emission characteristics. The results showed that employing a post-injection combined with a pilot injection results in reduced soot formation from diffusion combustion and enhances the soot oxidation process during the expansion stroke, resulting in decreased soot emissions, while the NOx concentration is maintained in low levels. It was also found that spray targeting is very effective for controlling the in-cylinder mixture distributions especially when it accompanied with advanced injection strategies. Moreover, the results confirmed that a narrower width of piston bowl has a higher unburned fuel air mixture region and hence results in higher soot emissions but with slightly larger piston surface area the optimum operating point could be obtained.

Download or read book Conference Proceedings of the Second International Conference on Recent Advances in Bioenergy Research written by Sachin Kumar and published by Springer. This book was released on 2017-11-01 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book discusses latest advances in the area of bioenergy, including algal biomass, biodiesel, bioethanol, biomethanation, pyrolysis, biomass gasification, biomass cook stoves and integrated processes. The volume comprises select proceedings of ICRABR-2016. The contents include cutting-edge research vital to R&D organizations, academics and the industry to promote and document the recent developments in the area of bioenergy for all types of stakeholders. The book highlights the need for biofuels and their market, the barriers and challenges faced by biofuels and bioenergy, and future strategies required to foster new ideas for research, collaboration, and commercialization of bioenergy. It addresses various topics, such as biomass and energy management; thermochemical conversion processes; biochemical conversion processes; catalytic conversion processes; electrochemical processes; waste treatment to harvest energy; and integrated processes. It will prove a valuable resource for students, researchers, professionals and policymakers in the field of biofuels and bioenergy.