Fuel Distribution in an Air Assist Direct Injected Spark Ignition Engine with Central Injection and Spark Plug Measured with Laser Induced Fluorescence 2000-01-1898
The fuel distribution in an air assist direct injection engine was measured with Planar Laser Induced Fluorescence, PLIF. The engine was fueled with isooctane and 3-pentanon was used as the fuel tracer.
The optical engine was of the prolonged piston type, with a quartz ring in the upper part of the cylinder. Both the fuel injector and the spark plug were centrally located in the cylinder head. Two different pistons were examined: flat piston and bowl in piston.
Results show that the differences in fuel stratification are very large for the flat piston compared to the piston with a bowl.
Citation: Ekenberg, M. and Johansson, B., "Fuel Distribution in an Air Assist Direct Injected Spark Ignition Engine with Central Injection and Spark Plug Measured with Laser Induced Fluorescence," SAE Technical Paper 2000-01-1898, 2000, https://doi.org/10.4271/2000-01-1898. Download Citation
Martin Ekenberg, Bengt Johansson
Lund Institute of Technology
CEC/SAE Spring Fuels & Lubricants Meeting & Exposition
Gasoline Direct Injection Engines-SP-1547