Browse Publications Technical Papers 2004-01-0548
2004-03-08

Evaluation of a Direct-Injected Stratified Charge Combustion System Using Tracer PLIF 2004-01-0548

A PLIF measurement system was designed and applied for imaging direct-injected stratified charge fuel preparation. An extensive measurement plane was achieved through novel design features in the system. Measurement and processing uncertainties were assessed at ±15% for the semi-quantitative fuel density. Tracer selection among suggested iso-octane candidates was found not to have a significant effect on PLIF results under the conditions tested. Stratified charge fuel distribution images were acquired for three piston and fuel injector combinations. The effect of piston design in guiding the fuel mixture position was most notable. Fuel distribution features correlated reasonably well with measured data from a thermodynamic engine of similar design.

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