Download or read book Photographic Characterization of Spark Ignition Engine Fuel Injectors written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-10 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Manifold port fuel injectors suitable for use in general aviation spark-ignition engines were evaluated qualitatively on the basis of fuel spray characteristics. Photographs were taken at various fuel flow rates or pressure levels. Mechanically and electronically operated pintle injectors generally produced the most atomization. The plain-orifice injectors used on most fuel-injected general aviation engines did not atomize the fuel when sprayed into quiescent air. Evanich, P. L. Glenn Research Center NASA-TM-78830, E-9535
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 Analysis of Spark ignition Engine Knock as Seen in Photographs Taken at 200 000 Frames a Second written by Cearcy D. Miller and published by . This book was released on 1946 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: A motion-picture of the development of knock in a spark-ignition engine is presented, which consists of 20 photographs taken at intervals of 5 microseconds, or at a rate of 200,000 photographs a second, with an equivalent wide-open exposure time of 6.4 microseconds for each photograph. A motion picture of a complete combustion process, including the development of knock, taken at the rate of 40,000 photographs a second is also presented to assist the reader in orienting the photographs of the knock development taken at 200,000 frames per second are analyzed and the conclusion is made that the type of knock in the spark-ignition engine involving violent gas vibration originates as a self-propagating disturbance starting at a point in the burning or autoigniting gases and spreading out from that point through the incompletely burned gases at a rate as high as 6800 feet per second, or about twice the speed of sound in the burned gases. Apparent formation of free carbon particles in both the burning and the burned gas is observed within 10 microseconds after passage of the knock disturbance through the gases.
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1979 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Emission Characterization for a Port Fuel Injected Spark Ignition Engine written by Kamal Kumar (Ph. D.) and published by . This book was released on 2004 with total page 280 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 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 Spray Characterization in a Direct Injection Spark Ignition Engine During Cold Start written by Anand Haren Gandhi and published by . This book was released on 2005 with total page 467 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1973 with total page 1064 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Characterization of Fuel Sprays in Spark Ignition Engines written by Paul Andrew Williams and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effect of Water Injection on Combustion Characteristics of a Spark ignition Internal combustion Engine written by Edward Ellis Towe and published by . This book was released on 1955 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Performance Characteristics of the Broderson Stratified Charge Spark Ignition Engine with Gaseous Fuel Injection written by Richard E. Turner and published by . This book was released on 1958 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1989 with total page 1148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Direct Injection Spark Ignition Fuel Spray Characterization Under Simulated Injection Strategies written by Robert Edmond Hennessey and published by . This book was released on 2001 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bulletin written by and published by . This book was released on 1924 with total page 666 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering Research Bulletin written by and published by . This book was released on 1920 with total page 1040 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Analysis of Spark ignition Engine Knock as Seen in Photographs Taken at 200 000 Frames Per Second written by Cearcy D. Miller and published by . This book was released on 1949 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt:
