Download or read book Fuel Concentration Imaging Inside an Optically Accessible Diesel Engine Using 1 methylnaphthalene Planar Laser induced Fluorescence written by and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experimental Study of Mixing of Directly Injected Fuel with Air in an Optically Accessible Engine Using Laser Induced Fluorescence written by Jon Clayton Darrow and published by . This book was released on 1998 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quantitative 2 D Fuel Vapor Concentration Imaging in a Firing D I Diesel Engine Using Planar Laser induced Rayleigh Scattering written by Christoph Espey and published by . This book was released on 1994 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book OH Radical Imaging in a DI Diesel Engine and the Structure of the Early Diffusion Flame written by and published by . This book was released on 1996 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser-sheet imaging studies have considerably advanced our understanding of diesel combustion; however, the location and nature of the flame zones within the combusting fuel jet have been largely unstudied. To address this issue, planar laser-induced fluorescence (PLIF) imaging of the OH radical has been applied to the reacting fuel jet of a direct-injection diesel engine of the ''heavy-duty'' size class, modified for optical access. An Nd:YAG-based laser system was used to pump the overlapping Q19 and Q28 lines of the (1,0) band of the A-->X transition at 284.01 nm, while the fluorescent emission from both the (0,O) and (1, I) bands (308 to 320 nm) was imaged with an intensified video camera. This scheme allowed rejection of elastically scattered laser light, PAH fluorescence, and laser-induced incandescence. OH PLIF is shown to be an excellent diagnostic for diesel diffusion flames. The signal is strong, and it is confined to a narrow region about the flame front because the threebody recombination reactions that reduce high flame-front OH concentrations to equilibrium levels occur rapidly at diesel pressures. No signal was evident in the fuel-rich premixed flame regions where calculations and burner experiments indicate that OH concentrations will be below detectable limits. Temporal sequences of OH PLIF images are presented showing the onset and development of the early diffusion flame up to the time that soot obscures the images. These images show that the diffusion flame develops around the periphery of the-downstream portion of the reacting fuel jet about half way through the premixed burn spike. Although affected by turbulence, the diffusion flame remains at the jet periphery for the rest of the imaged sequence.

Download or read book Quantitative D fuel vapor doncentration imaging in a firing D I Diesel engine using planar laser induced rayleigh scattering written by Christoph Espey and published by . This book was released on 1994 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soot and Liquid phase Fuel Distributions in a Newly Designed Optically Accessible D I Diesel Engine written by and published by . This book was released on 1993 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two-dimensional (2-D) laser-sheet imaging has been used to examine the soot and liquid-phase fuel distributions in a newly designed, optically accessible, direct-injection Diesel engine of the heavy-duty size class. The design of this engine preserves the intake port geometry and basic dimensions of a Cummins N-series production engine. It also includes several unique features to provide considerable optical access. Liquid-phase fuel and soot distribution studies were conducted at a medium speed (1,200 rpm) using a Cummins closed-nozzle fuel injector. The scattering was used to obtain planar images of the liquid-phase fuel distribution. These images show that the leading edge of the liquid-phase portion of the fuel jet reaches a maximum length of 24 mm, which is about half the combustion bowl radius for this engine. Beyond this point virtually all the fuel has vaporized. Soot distribution measurements were made at a high load condition using three imaging diagnostics: natural flame luminosity, 2-D laser-induced incandescence, and 2-D elastic scattering. This investigation showed that the soot distribution in the combusting fuel jet develops through three stages. First, just after the onset of luminous combustion, soot particles are small and nearly uniformly distributed throughout the luminous region of the fuel jet. Second, after about 2 crank angle degrees a pattern develops of a higher soot concentration of larger sized particles in the head vortex region of the jet and a lower soot concentration of smaller sized particles upstream toward the injector. Third, after fuel injection ends, both the soot concentration and soot particle size increase rapidly in the upstream portion of the fuel jet.

Download or read book Diesel Combustion and Fuel Spray Analysis Using an Optical Engine with Pressure Diagnostics Infrared Thermography and High speed Photography written by Cody William Squibb and published by . This book was released on 2009 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Measurement of Fuel Dilution of Oil in a Diesel Engine Using Laser Induced Fluorescence Spectroscopy written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A technique for measuring the fuel dilution of oil in a diesel engine is presented. Fuel dilution can occur when advanced in-cylinder fuel injection techniques are employed for the purpose of producing rich exhaust for lean NOx trap catalyst regeneration. Laser-induced fluorescence (LIF) spectroscopy is used to monitor the oil in a Mercedes 1.7-liter engine operated on a dynamometer platform. A fluorescent dye suitable for use in diesel fuel and oil systems is added to the engine fuel. The LIF spectra are monitored to detect the growth of the dye signal relative to the background fluorescence of the oil; fuel mass concentration is quantified based on a known sample set. The technique was implemented with fiber optic probes which can be inserted at various points in the oil system of the engine. A low cost 532-nm laser diode was used for excitation of the fluorescence. Measurements of fuel dilution of oil are presented for various in-cylinder injection strategies for rich operation of the diesel engine. Rates of fuel dilution increase for all strategies relative to normal lean operation, and higher fuel dilution rates are observed when extra fuel injection occurs later in the combustion cycle when fuel penetration into the cylinder wall oil film is more likely.

Download or read book Laser Diagnostic Analysis of NO Formation in a Direct Injection Diesel Engine With Pump Line Nozzle and Common Rail Injection Systems written by and published by . This book was released on 2000 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser-induced fluorescence (LIF) imaging was applied to investigate NO formation in a directly injected diesel engine with realistic combustion chamber geometry. The technique, which uses KrF excimer laser excitation, was previously successfully applied in gasoline engines. Influences of interfering species depending on the spectral range used for LIF detection was investigated by spectrally resolved LIF detection. Laser and signal attenuation were assessed in separate experiments using spectrally resolved O2 LIF detection with the same optical path as in the imaging measurements. The in-cylinder NO concentration was compared for different injection systems and operating conditions.

Download or read book Development of a Diagonal Excitation observation Diagnostic Technique for Planar Laser induced Fluorescence of the Methyne Radical in Diesel Engines written by Mark P. Musculus and published by . This book was released on 1998 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Fuel Composition on Mixture Formation in a Firing Direct injection Spark ignition DISI Engine written by Martin H. Davy and published by . This book was released on 2000 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quantitative Measurements of Liquid Fuel Film on the Piston Top of an Optical direct injection Engine by Laser induced Fluorescence written by Mong-Tung Lin and published by . This book was released on 2004 with total page 392 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Use of a Dual fiber Probe and the Laser induced Fluorescence Technique to Study Oil Consumption in a Diesel Engine written by Gregory M. Ostroski and published by . This book was released on 1999 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Implementation and Calibration of a Laser induced Fluorescence System in a Diesel Engine written by Luis Héctor Palacios and published by . This book was released on 1997 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Calibration of the Laser Induced Fluorescence Technique Applied to Oil Film Thickness Measurements on a Diesel Engine Cylinder Liner by Using Capacitance Gauges written by Dan O. Ducu and published by . This book was released on 1996 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Investigation of Methyl Decanoate Combustion in an Optical Direct Injection Diesel Engine written by and published by . This book was released on 2014 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this study, an optically accessible heavy-duty diesel engine was used to investigate the impact of methyl decanoate (MD) on combustion and emissions. A specific goal of the study was to determine if MD could enable soot-free leaner-lifted flame combustion (LLFC) - a mode of mixing-controlled combustion associated with fuel-air equivalence ratios below approximately two. An ultra-low sulfur diesel certification fuel (CF) was used as the baseline fuel, and experiments were conducted at two fuel-injection pressures with three levels of charge-gas dilution. In addition to conventional pressure-based and engine-out emissions measurements, exhaust laser-induced incandescence, in-cylinder natural luminosity (NL), and in-cylinder chemiluminescence (CL) diagnostics were used to provide detailed insight into combustion processes.

Download or read book The Vaporization Phenomena of Fuel Droplets Exposed to Asymmetric Radiant Heating Using Planar Laser induced Fluorescence written by Kavin Ammigan and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: