Characterization of Combustion, Piston Temperatures, Fuel Sprays, and Fuel-Air Mixing in a DISI Optical Engine 2000-01-2900
A transparent direct-injection spark-ignition engine incorporating a rapid-acting, drop-down cylinder has been built. The design enables access in less than a minute for cleaning windows. Combustion performance of the optical engine is characterized in terms of indicated pressure and coefficient of variation of indicated pressure as a function of injection timing. Piston temperatures are measured and a skip-fire routine is developed so that quartz piston top temperatures agree with a matching non-optical engine. Laser-induced fluorescence imaging of in-cylinder fuel injections highlights the effects of ambient pressure and fuel temperature on spray morphology. Measurements of gasoline vapor distribution provide statistics on heterogeneity of fuel distribution as a function of injection timing. Flame imaging records details of flame development which depend on the degree of fuel mixing.
Citation: Steeper, R. and Stevens, E., "Characterization of Combustion, Piston Temperatures, Fuel Sprays, and Fuel-Air Mixing in a DISI Optical Engine," SAE Technical Paper 2000-01-2900, 2000, https://doi.org/10.4271/2000-01-2900. Download Citation
Author(s):
Richard R. Steeper, Eric J. Stevens
Affiliated:
Sandia National Laboratories
Pages: 12
Event:
International Fuels & Lubricants Meeting & Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Combustion and Emissions Formation in SI and Diesel Engines-SP-1562
Related Topics:
Fuel injection
Combustion and combustion processes
Pistons
Spark ignition engines
Engine cylinders
Imaging and visualization
Optics
Pressure
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