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Abstract High-speed particle image velocimetry (PIV) and planar laser induced fluorescence (PLIF) techniques are combined to acquire flow field and fuel concentration in a spray-guided spark-ignited direct-injection (SG-SIDI) engine under motored and fired operation. This is a crucial step to enable studies that seek correlations between marginal engine operation (misfires or partial burns) and local, instantaneous mixture and flow conditions. Correlated flow and fuel data are extracted from a 4 mm×4 mm sub-region directly downstream the spark plug to characterize the in-cylinder conditions next to the spark plug during the spray and ignition event. Values of equivalence ratio, velocity magnitude, shear strain rate, and vorticity all increase during the spray event and decrease an order of magnitude during the duration of the spark event.
- Content Type Journal Article
- DOI 10.1007/s00340-009-3620-y
- Authors
- B. Peterson, The University of Michigan Department of Mechanical Engineering 2026 W. E. Lay Automotive Laboratory, 1231 Beal Ave. Ann Arbor MI 48109-2133 USA
- V. Sick, The University of Michigan Department of Mechanical Engineering 2026 W. E. Lay Automotive Laboratory, 1231 Beal Ave. Ann Arbor MI 48109-2133 USA
- Journal Applied Physics B: Lasers and Optics
- Online ISSN 1432-0649
- Print ISSN 0946-2171
