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Effect Of Piston Bowl Geometry On Combustion And Emissions Of A Direct Injected Diesel Engine
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Book Synopsis Effect of Piston Bowl Geometry on Combustion and Emissions of a Direct Injected Diesel Engine by : Mark Robert Ellis
Download or read book Effect of Piston Bowl Geometry on Combustion and Emissions of a Direct Injected Diesel Engine written by Mark Robert Ellis and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Investigation of the Effects of Piston Bowl Geometry, Nozzle Spray Angle, and Engine Control Parameters on Early Injection Premixed Compression Ignition (PCI) Combustion in a HSDI Diesel Engine by : Nicholas James Boyarski
Download or read book Experimental Investigation of the Effects of Piston Bowl Geometry, Nozzle Spray Angle, and Engine Control Parameters on Early Injection Premixed Compression Ignition (PCI) Combustion in a HSDI Diesel Engine written by Nicholas James Boyarski and published by . This book was released on 2004 with total page 484 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis SAE 2001-30-0030, Analysis of the Effect of Combustion Bowl Geometry of a DI Diesel Engine on Efficiency and Emissions by : M.G. Lisbona
Download or read book SAE 2001-30-0030, Analysis of the Effect of Combustion Bowl Geometry of a DI Diesel Engine on Efficiency and Emissions written by M.G. Lisbona and published by . This book was released on 1999 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In an effort to optimize the thermodynamic efficiency and emissions levels of a current production common rail DI diesel engine, an experimental campaign was undertaken accompanied closely by analytical work. The objective of the analytical CFD work was to study the processes of fuel spray/wall interaction, flame propagation and interaction with the piston surface and the most relevant mechanisms of soot formation and oxidation in order to guide the experimental work. Given the project's objectives, the only parameters which could be modified regarded the piston-bowl geometry leaving the rest of the combustion system architecture intact. The paper describes only two extreme cases which, in the authors' opinion, demonstrate the interaction processes between combustion and combustion chamber walls. The analysis is limited in two engine operating conditions: one concerns maximum power operation and quantifies the effect of combustion chamber geometry on efficiency while the second is representative of the emissions test cycle. The numerical results indicate that, regarding performance, a larger diameter combustion chamber leads to higher combustion efficiency due to a weaker interaction of the fuel vapor and flame with the bowl walls. For the other operating condition, the soot model developed by Borghi and implemented in the SPEED code has been used. The numerical results showed that the larger diameter combustion bowl exhibits a lower efficiency in terms of soot oxidation due to the lower swirl velocities pertaining in the bowl during expansion. These trends have been confirmed by the experimental work. Based on the indications of the above analysis, an alternative combustion chamber has been designed and examined analytically. The main feature of this last design is a slightly smaller bowl diameter which leads to higher swirl levels during expansion accompanied by more soot oxidation and slightly lower combustion efficiency.
Book Synopsis Diesel Combustion and Emissions by : Society of Automotive Engineers
Download or read book Diesel Combustion and Emissions written by Society of Automotive Engineers and published by . This book was released on 1981 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Automotive Spark-Ignited Direct-Injection Gasoline Engines by : F. Zhao
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.
Author :P. A. Lakshminarayanan Publisher :Springer Science & Business Media ISBN 13 :904813885X Total Pages :313 pages Book Rating :4.0/5 (481 download)
Book Synopsis Modelling Diesel Combustion by : P. A. Lakshminarayanan
Download or read book Modelling Diesel Combustion written by P. A. Lakshminarayanan and published by Springer Science & Business Media. This book was released on 2010-03-03 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phenomenology of Diesel Combustion and Modeling Diesel is the most efficient combustion engine today and it plays an important role in transport of goods and passengers on land and on high seas. The emissions must be controlled as stipulated by the society without sacrificing the legendary fuel economy of the diesel engines. These important drivers caused innovations in diesel engineering like re-entrant combustion chambers in the piston, lower swirl support and high pressure injection, in turn reducing the ignition delay and hence the nitric oxides. The limits on emissions are being continually reduced. The- fore, the required accuracy of the models to predict the emissions and efficiency of the engines is high. The phenomenological combustion models based on physical and chemical description of the processes in the engine are practical to describe diesel engine combustion and to carry out parametric studies. This is because the injection process, which can be relatively well predicted, has the dominant effect on mixture formation and subsequent course of combustion. The need for improving these models by incorporating new developments in engine designs is explained in Chapter 2. With “model based control programs” used in the Electronic Control Units of the engines, phenomenological models are assuming more importance now because the detailed CFD based models are too slow to be handled by the Electronic Control Units. Experimental work is necessary to develop the basic understanding of the pr- esses.
Book Synopsis Modeling the Effects of Auxiliary Gas Injection and Fuel Injection Rate Shape on Diesel Engine Combustion and Emissions by : Daniel K. Mather
Download or read book Modeling the Effects of Auxiliary Gas Injection and Fuel Injection Rate Shape on Diesel Engine Combustion and Emissions written by Daniel K. Mather and published by . This book was released on 1998 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling the Effects of Fuel Injection on Heavy-duty Diesel Engine Performance and Emissions by : David D.. Wickman
Download or read book Modeling the Effects of Fuel Injection on Heavy-duty Diesel Engine Performance and Emissions written by David D.. Wickman and published by . This book was released on 1999 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Impact of Some Geometric Features of the Piston Bowl on Combustion and Emissions of an Automotive Diesel Engine by : Dionyssios A. Melas
Download or read book The Impact of Some Geometric Features of the Piston Bowl on Combustion and Emissions of an Automotive Diesel Engine written by Dionyssios A. Melas and published by . This book was released on 2003 with total page 177 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Diesel Engine Reference Book by : Bernard Challen
Download or read book Diesel Engine Reference Book written by Bernard Challen and published by Butterworth-Heinemann. This book was released on 1999 with total page 712 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive reference work covering the design and applications of diesel engines of all sizes. The text uses easily understood language and a practical approach to explore aspects of diesel engineering such as thermodynamics modelling, long-term use, applications and condition monitoring.
Book Synopsis Effects of Intake Flow on Mixing and Combustion in Direct Injection Diesel Engines Using Multidimensional Modeling by : Philip William Stephenson
Download or read book Effects of Intake Flow on Mixing and Combustion in Direct Injection Diesel Engines Using Multidimensional Modeling written by Philip William Stephenson and published by . This book was released on 1995 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Innovative Design and Development Practices in Aerospace and Automotive Engineering by : Ram P. Bajpai
Download or read book Innovative Design and Development Practices in Aerospace and Automotive Engineering written by Ram P. Bajpai and published by Springer. This book was released on 2016-09-17 with total page 587 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book presents the best articles presented by researchers, academicians and industrial experts in the International Conference on “Innovative Design and Development Practices in Aerospace and Automotive Engineering (I-DAD 2016)”. The book discusses new concept designs, analysis and manufacturing technologies, where more swing is for improved performance through specific and/or multifunctional linguistic design aspects to downsize the system, improve weight to strength ratio, fuel efficiency, better operational capability at room and elevated temperatures, reduced wear and tear, NVH aspects while balancing the challenges of beyond Euro IV/Barat Stage IV emission norms, Greenhouse effects and recyclable materials. The innovative methods discussed in the book will serve as a reference material for educational and research organizations, as well as industry, to take up challenging projects of mutual interest.
Book Synopsis Investigations of Advanced Injection and Combustion Strategies on DI Diesel Engine Performance and Emissions by : Raouf Mobasheri
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.
Book Synopsis Diesel Engine System Design by : Qianfan Xin
Download or read book Diesel Engine System Design written by Qianfan Xin and published by Elsevier. This book was released on 2011-05-26 with total page 1087 pages. Available in PDF, EPUB and Kindle. Book excerpt: Diesel Engine System Design links everything diesel engineers need to know about engine performance and system design in order for them to master all the essential topics quickly and to solve practical design problems. Based on the author's unique experience in the field, it enables engineers to come up with an appropriate specification at an early stage in the product development cycle. - Links everything diesel engineers need to know about engine performance and system design featuring essential topics and techniques to solve practical design problems - Focuses on engine performance and system integration including important approaches for modelling and analysis - Explores fundamental concepts and generic techniques in diesel engine system design incorporating durability, reliability and optimization theories
Book Synopsis Advances in IC Engines and Combustion Technology by : Ashwani K. Gupta
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.
Book Synopsis Advanced Direct Injection Combustion Engine Technologies and Development by : H Zhao
Download or read book Advanced Direct Injection Combustion Engine Technologies and Development written by H Zhao and published by Elsevier. This book was released on 2014-01-23 with total page 325 pages. Available in PDF, EPUB and Kindle. Book excerpt: Direct injection enables precise control of the fuel/air mixture so that engines can be tuned for improved power and fuel economy, but ongoing research challenges remain in improving the technology for commercial applications. As fuel prices escalate DI engines are expected to gain in popularity for automotive applications. This important book, in two volumes, reviews the science and technology of different types of DI combustion engines and their fuels. Volume 1 deals with direct injection gasoline and CNG engines, including history and essential principles, approaches to improved fuel economy, design, optimisation, optical techniques and their applications. - Reviews key technologies for enhancing direct injection (DI) gasoline engines - Examines approaches to improved fuel economy and lower emissions - Discusses DI compressed natural gas (CNG) engines and biofuels
Book Synopsis Production of Biofuels and Numerical Modeling of Chemical Combustion Systems by : Miguel Torres García
Download or read book Production of Biofuels and Numerical Modeling of Chemical Combustion Systems written by Miguel Torres García and published by MDPI. This book was released on 2021-08-18 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biofuels have recently attracted a lot of attention, mainly as alternative fuels for applications in energy generation and transportation. The utilization of biofuels in such controlled combustion processes has the great advantage of not depleting the limited resources of fossil fuels while leading to emissions of greenhouse gases and smoke particles similar to those of fossil fuels. On the other hand, a vast amount of biofuels are subjected to combustion in small-scale processes, such as for heating and cooking in residential dwellings, as well as in agricultural operations, such as crop residue removal and land clearing. In addition, large amounts of biomass are consumed annually during forest and savanna fires in many parts of the world. These types of burning processes are typically uncontrolled and unregulated. Consequently, the emissions from these processes may be larger compared to industrial-type operations. Aside from direct effects on human health, especially due to a sizeable fraction of the smoke emissions remaining inside residential homes, the smoke particles and gases released from uncontrolled biofuel combustion impose significant effects on the regional and global climate. Estimates have shown the majority of carbonaceous airborne particulate matter to be derived from the combustion of biofuels and biomass. “Production of Biofuels and Numerical Modelling of Chemical Combustion Systems” comprehensively overviews and includes in-depth technical research papers addressing recent progress in biofuel production and combustion processes. To be specific, this book contains sixteen high-quality studies (fifteen research papers and one review paper) addressing techniques and methods for bioenergy and biofuel production as well as challenges in the broad area of process modelling and control in combustion processes.
