Download or read book Characterization of an Air assisted Fuel Injector written by John Robert Emerson and published by . This book was released on 1990 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Fuel Injector Type on Performance and Emissions of Reverse flow Combustor written by Carl T. Norgren and published by . This book was released on 1981 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design and Experimental Characterization of Electrostatically Assisted Automotive Fuel Injectors written by Eric Karl Anderson and published by ProQuest. This book was released on 2009 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: With current automotive fuel injector designs, fuel mass and momentum cannot be independently controlled during engine operation. By introducing electrostatic charge to the fuel as it is injected, a means of altering the injector spray pattern without changing the mass injected is available. A commercially available automotive fuel injector was modified to apply electrostatic charge to the fuel spray. The resulting electrostatically charged sprays were compared to non-charged sprays from the same injector using a Mie scattering technique to image the spray, Fraunhofer diffraction to measure droplet size, and particle image velocimetry to measure droplet velocities. Results showed application of charge results in increased spray penetration during early injection, increased droplet axial velocities, and reduced spray-to-spray variations in droplet size. Measurements of the charge transferred by a spray indicated relatively weak electrostatically induced forces relative to inertial forces, but showed that conductivity enhancers or alcohol blended fuels can substantially increase charge transfer. The effect of charge on the combustion process was investigated by capturing high speed video of charged and non-charged droplets composed of blends of ethanol and isooctane. Substantial changes in droplet morphology depending on the polarity of the charge applied were found. In addition, to test charged sprays in a practical combustion system, an engine test cell was constructed using a spark ignition engine typical of current designs for automotive use. Findings indicate that application of charge to the injector can increase peak cylinder pressure and reduce unburned hydrocarbon emissions a small amount with the trade off of a slight increase in emissions of oxides of nitrogen.

Download or read book NASA Technical Paper written by United States. National Aeronautics and Space Administration and published by . This book was released on 1981 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book NASA Technical Paper written by and published by . This book was released on 1981 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fuel injector air swirl characterization aerothermal modeling phase II written by Mohammad Nikjooy and published by . This book was released on 1993 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fuel Injector Air Swirl Characterization Aerothermal Modeling Phase 2 Volume 1 written by and published by . This book was released on 1993 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fuel Injector Air Swirl Characterization Aerothermal Modeling Phase 2 Volume 2 written by and published by . This book was released on 1993 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Photographic Characterization of Spark ignition Engine Fuel Injectors written by and published by . This book was released on 1978 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fuel Injector written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-24 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: A well integrated experimental/analytical investigation was conducted to provide benchmark quality relevant to a prefilming type airblast fuel nozzle and its interaction with the combustor dome air swirler. The experimental investigation included a systematic study of both single-phase flows that involved single and twin co-axial jets with and without swirl. A two-component Phase Doppler Particle Analyzer (PDPA) was used to document the interaction of single and co-axial air jets with glass beads that simulate nonevaporating spray and simultaneously avoid the complexities associated with fuel atomization processes and attendant issues about the specification of relevant boundary conditions. The interaction of jets with methanol spray produced by practical airblast nozzle was also documented in the spatial domain of practical interest. Model assessment activities included the use of three turbulence models (k-epsilon, algebraic second moment (ASM), and differential second moment (DSM)) for the carrier phase, deterministic or stochastic Lagrangian treatment of the dispersed phase, and advanced numerical schemes. Although qualitatively good comparison with data was obtained for most of the cases investigated, the model deficiencies in regard to modeled dissipation rate transport equation, single length scale, pressure-strain correlation, and other critical closure issues need to be resolved before one can achieve the degree of accuracy required to analytically design combustion systems. Nikjooy, M. and Mongia, H. C. and Mcdonell, V. G. and Samuelsen, G. S. Glenn Research Center NASA-CR-189193-VOL-1, E-7593-VOL-1, NAS 1.26:189193-VOL-1 NAS3-24350; RTOP 505-62-52...

Download or read book The Effects of Spray Characteristics on Combustion and Emission Performance of a Two stroke Direct injection Engine written by Mark Casarella and published by . This book was released on 1998 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Characterization of Operating Parameters Authority on the Flow field Mixedness of a DISI Engine written by Matthew A. Wiles and published by . This book was released on 2003 with total page 348 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Structure of Sprays from Fuel Injectors written by J. Emerson and published by . This book was released on 1990 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Computation of the Spray from an Air assisted Fuel Injector written by J. M. MacInnes and published by . This book was released on 1990 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CHARACTERIZATION OF THE POST INJECTION BEHAVIOR OF GASOLINE DIRECT INJECTION FUEL INJECTORS written by and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract : The characteristics of gasoline sprayed directly into combustion chambers are of critical importance to engine out emissions and combustion system development. The optimization of the spray characteristics to match the in-cylinder flow field, chamber geometry, and spark location are vital tasks during the development of an engine combustion strategy. Furthermore, the presence of liquid fuel during combustion in Spark-Ignition (SI) engines causes increased hydrocarbon (HC) emissions [1]. Euro 6, LEVIII, and US Tier 3 emissions regulations reduce the allowable particulate mass significantly from the previous standards. LEVIII standards reduce the acceptable particulate emission to 1 mg/mile [2]. A good Direct Injection Spark Ignited (DISI) strategy vaporizes the correct amount of fuel at the proper point in the engine cycle with the proper in-cylinder air flow for optimal power output with minimal emissions. The opening and closing phases of DISI injectors is crucial to this task as the spray produces larger droplets during both theses phases. This work focuses on the results from a novel method to investigate fuel behavior upon closing of the fuel injector. A Design of Experiments (DOE) was used to determine the effect of pressure, temperature, and pulse-width of the fuel spray after the closing event. Experiments determined that the primary source of controlling the droplet size and the mass post injector closing for a given injector was the temperature. It was found that the end of injection behavior is a highly dynamic, complex event including, but not limited to, effects from the injector design, deposit concentration, and fuel type.

Download or read book Fuel Injection Systems 2003 written by PEP (Professional Engineering Publishers) and published by John Wiley and Sons. This book was released on 2003-04-29 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fuel Injection Systems addresses key issues in fuel delivery and associated technologies which are evolving faster than ever. The rapid technological change has reduced product life cycles resulting in rapid evolution of design and development methods to enable timely delivery of increasingly complex technology. This is vital as the demands on engines are increasingly stringent, especially in the field of emissions, new fuel injection systems are being developed to meet these challenges, not only in passenger cars but also for heavy duty as well as large engine applications. This volume brings together international contributions from the leading experts in industry and the latest research from academia to provide a comprehensive update to all those working in design, development, and manufacturing of fuel injection systems. Contents include: Emission reduction with advanced two-actuator EUI for heavy-duty diesel engines Investigation of a two valve electronically controlled unit injector on a Euro IV heavy duty diesel engine using design of experiment methods Characterization of in-cylinder fuel distribution from an air-assisted fuel injection system using advanced laser diagnostics High contact stress applications of a silicon nitride in modern diesel engines The use of the HLMI (hydraulic leak measurement unit) Komatsu STA 6DI40 water emulsified fuel engine Timely control of diesel combustion using water injection

Download or read book Direct Injection Gasoline Fuel Injector Characterization written by Gasoline Fuel Injection Standards Committee and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SAE Recommended Practice promotes uniformity in the evaluation and qualification tests conducted on GDI fuel injectors used in gasoline engine applications, where fuel pressures are typically well above 1 MPa. The document scope is limited to electrically-actuated fuel injection devices used in automotive GDI systems and is primarily restricted to bench tests. The use of uniform and standardized testing and evaluation procedures for fuel injectors is important to the worldwide automotive community. Standardized test procedures provide both injector manufacturers and end-users with one accepted test for each of the key injector performance parameters, instead of a specialized test protocol for each of many customers and applications. The use of these procedures for test configurations, testing methods, data reduction and reporting that are contained in this document will significantly enhance the ability of one test laboratory to accurately repeat and verify the results of another.Gasoline direct injection (GDI) differs substantially from port fuel injection (PFI), hence the existing PFI recommended practice document (SAE J1832) cannot be employed. The application of GDI has rapidly expanded worldwide. Prior to this document, a recommended practice for GDI injectors was not available. This recommended practice will permit the automotive industry to evaluate, characterize and compare GDI hardware.