X-ray Measurements of Direct Injection Diesel Sprays
на канале: X-ray Fuel Injection and Spray Research at Argonne National Laboratory
X-rays from Argonne's Advanced Photon Source are being used to study the behavior of shot-to-shot variations in direct injection diesel spray systems. Many of the previous x-ray radiography studies of direct injection sprays have involved measuring the average behavior of many injection events. However, improvements to the beamline now allow us to measure individual injection events with high precision. This gives us a new understanding of how shot-to-shot variation can affect the behaviour of a real diesel spray at engine-like pressures and densities. In tandem with x-ray phase contrast imaging, these measurements are giving researchers a more complete understanding of how diesel injection systems behave. This allows researchers to perform more accurate simulations, and will lead to improvements in fuel efficiency and emissions reductions.
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This research was performed at the 7-BM, 7-ID and 32-ID beamlines of the Advanced Photon Source at Argonne National Laboratory. Use of the APS is supported by the U.S. Department of Energy (DOE) under Contract No. DE-AC02-06CH11357. The fuel spray research is sponsored by the DOE Vehicle Technologies Program. The authors wish to thank team leaders Gurpreet Singh and Leo Breton for their support of this work. This material has been created by UChicago Argonne, LLC, Operator of Argonne National Laboratory (“Argonne”). Argonne, a U.S. Department of Energy Office of Science laboratory, is operated under Contract No. DE-AC02-06CH11357. The U.S. Government retains for itself, and others acting on its behalf, a paid-up nonexclusive, irrevocable worldwide license in said article to reproduce, prepare derivative works, distribute copies to the public, and perform publicly and display publicly, by or on behalf of the Government.