Download or read book The Measurement of Atomisation in Fuel Sprays Etc Fuel Injection in Internal combustion Engines written by Edmund GIFFEN (and MURASZEW (Alexander)) and published by . This book was released on 1948 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fuel Injection in Internal combustion Engines written by Edmund Giffen and published by . This book was released on 1948 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atomisation of Low Pressure Fuel Sprays Etc Fuel Injection in Internal combustion Engines With Illustrations written by Edmund GIFFEN (and MURASZEW (Alexander)) and published by . This book was released on 1948 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mixture Formation in Internal Combustion Engines written by Carsten Baumgarten and published by Springer Science & Business Media. This book was released on 2006-09-28 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: A systematic control of mixture formation with modern high-pressure injection systems enables us to achieve considerable improvements of the combustion pr- ess in terms of reduced fuel consumption and engine-out raw emissions. However, because of the growing number of free parameters due to more flexible injection systems, variable valve trains, the application of different combustion concepts within different regions of the engine map, etc., the prediction of spray and m- ture formation becomes increasingly complex. For this reason, the optimization of the in-cylinder processes using 3D computational fluid dynamics (CFD) becomes increasingly important. In these CFD codes, the detailed modeling of spray and mixture formation is a prerequisite for the correct calculation of the subsequent processes like ignition, combustion and formation of emissions. Although such simulation tools can be viewed as standard tools today, the predictive quality of the sub-models is c- stantly enhanced by a more accurate and detailed modeling of the relevant pr- esses, and by the inclusion of new important mechanisms and effects that come along with the development of new injection systems and have not been cons- ered so far. In this book the most widely used mathematical models for the simulation of spray and mixture formation in 3D CFD calculations are described and discussed. In order to give the reader an introduction into the complex processes, the book starts with a description of the fundamental mechanisms and categories of fuel - jection, spray break-up, and mixture formation in internal combustion engines.
Download or read book Simulations and Optical Diagnostics for Internal Combustion Engines written by Akhilendra Pratap Singh and published by Springer Nature. This book was released on 2019-10-11 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on combustion simulations and optical diagnostics techniques, which are currently used in internal combustion engines. The book covers a variety of simulation techniques, including in-cylinder combustion, numerical investigations of fuel spray, and effects of different fuels and engine technologies. The book includes chapters focused on alternative fuels such as DEE, biomass, alcohols, etc. It provides valuable information about alternative fuel utilization in IC engines. Use of combustion simulations and optical techniques in advanced techniques such as microwave-assisted plasma ignition, laser ignition, etc. are few other important aspects of this book. The book will serve as a valuable resource for academic researchers and professional automotive engineers alike.
Download or read book Fuel Injection in Internal combustion Engines written by E. Giffen and published by . This book was released on 1948 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fuel Injection in Internal Combustion Engines Fuel Spray Phenomena Review of Information Etc written by Alexander MURASZEW and published by . This book was released on 1947 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gasoline Fuel Injector Spray Measurement and Characterization written by Gasoline Fuel Injection Standards Committee and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE Recommended Practice promotes uniformity in the characterization tests conducted on sprays generated by automotive fuel injectors used in both port fuel injection and gasoline-direct injection engine applications. SAE J2715 contains the detailed background, procedures and data reduction protocols for nearly all fuel spray characterization metrics that are applicable to automotive applications. It is intended to be utilized in conjunction with other SAE J documents that address injector performance metrics. These are SAE J1832 for Port Fuel Injection and the forthcoming SAE J2713 for Gasoline Direct Injectors. The rationale for this document is that fuel spray measurement and characterization continues to become increasingly critical to the automotive industry; whereas no comprehensive, industry-wide set of measurement and reporting procedures has been available. This has led to a situation in which many spray parameters and test procedures have, of necessity, been created and utilized within individual original equipment manufacturer (OEM) companies, and even among third-party testing laboratories and universities. This non-uniformity regarding test and reporting procedures has resulted in a lack of repeatability and traceability for many claimed spray parameters. It has also made it very difficult for any laboratory to check the values of spray-characterization parameters that are reported by another laboratory. The lack of standardization has also resulted in considerable confusion and obfuscation regarding the names and definitions of spray parameters as they apply to port fuel injection and gasoline-direct injection. The current situation regarding the term "cone angle" for these two classes of injectors is a prime example.The use of the uniform and well-defined procedures for test configuration, testing, data reduction and reporting that are contained in this document should significantly enhance the ability of one spray-test laboratory to accurately repeat and verify the results of another. The very detailed procedures and test specifications for all of the spray parameters should also serve to reduce the variation of spray parameter values that are reported, even for the same injector model. This should, in turn, reduce the overall time and overhead for obtaining a proven fuel system for an engine, as OEMs could ultimately conduct one set of spray tests per J2715 as opposed to a separate set of tests for each customer. This document should also supply the industry with a neutral, unbiased test for each defined spray parameter.
Download or read book Atomisation of Fuel Sprays for Internal Combustion Engines written by A. Murazew and published by . This book was released on 1948 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Jet Fuel Spray Characterisation Using Optical Methods written by Rami Zakaria and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis was initiated by the need to develop a stable low vibration engine with a high power to weight ratio. A new rotary (Wankel) engine was chosen to meet these requirements. A further operating criterion was that the engine was required to use JP8 (aviation fuel). The difficulty created by the use of JP8 is that its combustion temperature is higher than other conventional fuels, and preheating is necessary, especially in the case of cold start. Thus, the question posed was, could a more appropriate and efficient method of fuel delivery be devised? This thesis presents the design and construction of a fluid spray visualisation system for investigating the macroscopic and microscopic characteristics of fuel sprays using low injection pressure up to 10 bar (1 MPa). Laser imaging techniques have been used for data acquisition. The thesis has been divided into several aspects. Firstly, a background study of fluid sprays and fuel injection strategies was carried out. This has centred on the relationship between droplet size and the combustion process. It further investigated what differentiated the fuel delivery approach to Wankle from that to other engines. Secondly, two families of fuel injector were tested and evaluated within the optical engineering laboratory using deionised water (DI) water for safety reasons. The first family involved conventional gasoline injectors with several nozzle arrangements. The second family involved medical nebulisers with several nozzle diameters. The evaluation of the fuel injectors required developing a fluid delivery circuit, and a specific ECU (Electronic Control Unit) for controlling pulse delivery and imaging instrument. The company associated with the project then set up a test cell for performing experiments on JP8 fuel. The initial global visualisation of the jet spray was made using a conventional digital camera. This gave a measurement of the spray angle and penetration length. However, as the study moved to the more precise determination of the fuel spray particulate size, a specialised Nd:YAG laser based diagnostic was created combined with a long range diffraction limited microscope. Microscopic characterisation of the fuel sprays was carried out using a backlight shadowgraph method. The microscopic shadowgraphy method was applied successfully to resolve droplets larger than 4 microns in diameter. The spray development process during an individual fuel injection cycle was investigated, presenting the frequency response effect of electronic fuel injectors (EFI) on the spray characteristics when operating at high injection frequencies (0.25 -- 3.3 kHz). The velocity distribution during the different stages of an injection cycle was investigated using PIV. The influence of the injection pressure on the spray pattern and droplet size was also presented. Novel fluid atomisation systems were investigated for the capability of generating an optimum particulate distribution under low pressure. Finally, it was found that a new electronic medical nebuliser (micro--dispenser) could be used to deliver the fuel supply with the relevant particle size distribution at low flow rate and high injection frequency. However, as yet it has not been possible to apply this approach to the engine; it is hoped that it will yield a more efficient method of cold starting the engine. The characteristics of this atomiser can be applied to provide a controllable fuel supply approach for all rotary engines to improve their fuel efficiency. The second part of this research discusses the droplets--light interaction using Mie scattering for fluid droplets smaller than the microscope visualisation limit (4 microns). Mie scattering theory was implemented into Three--Components Particle Image Velocimetry (3C-- PIV) tests to address a number of problems associated with flow seeding using oil smoke. Mie curves were used to generate the scattering profile of the oil sub--micron droplets, and therefore the scattering efficiency can be calculated at different angles of observation. The results were used in jet flow PIV system for the determination of the optimum position of the two cameras to generate balanced brightness between the images pairs. The brightness balance between images is important for improving the correlation quality in the PIV calculations. The scattering efficiency and the correlation quality were investigated for different seeding materials and using different interrogation window sizes.
Download or read book Fuel Injection in Internal combustion Engines written by A. Muraszew and published by . This book was released on 1947 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book LES of Atomization and Cavitation for Fuel Injectors written by Aqeel Ahmed and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents Large Eddy Simulation (LES) of fuel injection, atomization and cavitation inside the fuel injector for applications related to internal combustion engines. For atomization modeling, Eulerian Lagrangian Spray Atomization (ELSA) model is used. The model solves for volume fraction of liquid fuel as well as liquid-gas interface surface density to describe the complete atomization process. In this thesis, flow inside the injector is also considered for subsequent study of atomization. The study presents the application of ELSA model to a typical diesel injector, both in the context of RANS and LES. The model is validated with the help of experimental data available from Engine Combustion Network (ECN). The ELSA model which is normally designed for diffused (unresolved) interfaces, where the exact location of the liquid-gas interface is not considered, is extended to work with Volume of Fluid (VOF) type formulation of two phase flow, where interface is explicitly resolved. The coupling is achieved with the help of Interface Resolution Quality (IRQ) criteria, that takes into account both the interface curvature and modeled amount of interface surface. ELSA model is developed first considering both phases as incompressible, the extension to compressible phase is also briefly studied in this thesis, resulting in compressible ELSA formulation that takes into account varying density in each phase. In collaboration with Imperial College London, the Probability Density Function (PDF) formulation with Stochastic Fields is also explored to study atomization. In modern fuel injection systems, quite oftenthe local pressure inside the injector falls below the vapor saturation pressure of the fuel, resulting in cavitation. Cavitation effects the external flow and spray formulation. Thus, a procedure is required to study the phase change as well as jet formulation using a single and consistent numerical setup. A method is developed in this thesis that couples the phase change inside the injector to the external jet atomization. This is achieved using the volume of fluid formulation where the interface is considered between liquid and gas; gas consists of both the vapor and non condensible ambient air.
Download or read book Diesel Engines for Passenger Cars and Light Duty Vehicles written by Institution of Mechanical Engineers (Great Britain). Automobile Division and published by . This book was released on 1982 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Design and Construction of Apparatus to Obtain Instantaneous Fuel injection Rates in a Compression ignition Engine written by Richard J. Priem and published by . This book was released on 1951 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fuel Injection and Controls for Internal Combustion Engines written by Paul G. BURMAN and published by . This book was released on 1962 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Combustion of Liquid Fuel Sprays written by Alan Williams and published by Butterworth-Heinemann. This book was released on 2013-10-22 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combustion of Liquid Fuel Sprays outlines the fundamentals of the combustion of sprays in a unified way which may be applied to any technological application. The book begins with a discussion of the general nature of spray combustion, the sources of liquid fuels used in spray combustion, biomass sources of liquid fuels, and the nature and properties of fuel oils. Subsequent chapters focus on the properties of sprays, the atomization of liquid fuels, and the theoretical modeling of the behavior of a spray flame in a combustion chamber. The nature and control of pollutants from spray combustion, the formation of deposits in oil-fired systems, and the combustion of sprays in furnaces and engines are elucidated as well. The text is intended for students undertaking courses or research in fuel, combustion, and energy studies.
Download or read book Physics based Reduced order Modeling of Fuel Injection and Combustion Processes in Internal Combustion Engines written by Abhishek Y. Deshmukh and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
