The Influence of a Late In-Cylinder Air Injection on In-Cylinder Flow Measured with Particle Image Velocimetry (PIV) 2001-01-3492
During development of an air assisted, direct injection combustion system, it was found that an air pulse during the late part of compression stroke significantly shortened the combustion duration and extended the lean limits of the engine.
The effect of an injection of pure air through an air assist direct injector was studied with Particle Image Velocimetry, PIV.
Results showed that an air pulse during the compression stroke significantly speeded up in-cylinder velocities, which also was showed in the heat release analysis.
A system to use low density seeding particles was developed and is presented in the paper.
Citation: Ekenberg, M., Reinmann, R., Olofsson, E., Gillet, B. et al., "The Influence of a Late In-Cylinder Air Injection on In-Cylinder Flow Measured with Particle Image Velocimetry (PIV)," SAE Technical Paper 2001-01-3492, 2001, https://doi.org/10.4271/2001-01-3492. Download Citation
Martin Ekenberg, Raymond Reinmann, Eric Olofsson, Bertrand Gillet, Bengt Johansson
SAAB Automobile/ Lund Institute of Technology, Ecole supérieure de l'énergie et des materiaux, Orléans
SAE International Fall Fuels & Lubricants Meeting & Exhibition
Experimental Investigation of SI Engines-SP-1638