Articles
PLIF Technique For Fuel Visualization In Engines And Its Role In Retrofit Technology
June 27, 2007
Click Here To Download:•Application Note: PLIF Technique For Fuel Visualization In Engines And Its Role In Retrofit Technology
Problem
A problem in large-bore, slow-speed, natural gas two-stoke cycle engines is poor incylinder
mixing processes caused by ineffective fuel delivery. Engines in this class are
used primarily for power generation and gas compression on natural gas pipelines. Poor
in-cylinder mixing can cause elevated oxides of nitrogen emissions due to thermal
stratification, high carbon monoxide and unburned hydrocarbon emissions due to partial
combustion, and low engine efficiency.
Experimental Technique
To address the mixing problem, a visualization technique is needed to image the fuel in
the cylinder, or combustion chamber. Fuel visualization in the combustion chamber
enables the advancement of current understanding of fuel injection and mixing in
combustion chambers. A well-suited technique for this is Planar Laser Induced
Fluorescence (PLIF). PLIF allows the user to visualize injected fuel flow and the ensuing
fuel and air mixing process. A seeded gas (acetone tracer) is used such that, when
irradiated with laser light, it fluoresces, enabling the gas mixture to be visible for highspeed
photography within an optically accessible combustion chamber.
SOURCE: The Cooke Corporation
Click Here To Download:•Application Note: PLIF Technique For Fuel Visualization In Engines And Its Role In Retrofit Technology
