A combination of imaging techniques for investigations of highly transient processes and cyclic variations in internal combustion engines is presented. The single high-speed camera setup uses a CMOS camera combined with a two-stage image-intensifier and two excimer lasers. Fuel mixing, ignition and combustion were monitored via planar laser induced fluorescence imaging of toluene as a tracer that was added to iso-octane in combination with the simultaneous recording of light emission from the spark plasma and OH* chemiluminescence of the developing flame. Image frame rates of 12 kHz for hundreds of cycles were achieved. Application to misfire events in a spray-guided gasoline direct-injection engine is described to illustrate the merits of the technique.
Crank-Angle Resolved Imaging of Fuel Distribution, Ignition and Combustion in a Direct-Injection Spark-Ignition Engine
Sae Technical Papers
Powertrain & Fluid Systems Conference & Exhibition ; 2005
2005-10-24
Conference paper
English
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