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Optical Research of Spray Development of E85 Fuel in High Pressure Gasoline Direct Injection System Poznan Univ. of Technology
- Format:
- Conference/Event
- Author/Creator:
- Pielecha, Pielecha, author.
- Conference Name:
- SAE 2010 Powertrains Fuels & Lubricants Meeting (2010-10-25 : San Diego, California, United States)
- Language:
- English
- Physical Description:
- 1 online resource
- Place of Publication:
- Warrendale, PA SAE International 2010
- Summary:
- The paper discusses the analysis of ethanol (E85) fuelatomization generated by piezoelectric fuel injectors operating ina high-pressure gasoline direct injection system. The methodologyand tests results of the influence of the fuel (E85) injectionpressure and combustion chamber back pressure on the changes of thefuel spray geometrical parameters during the injection and on thevalues characterizing the injection quality have been presented inthe paper. The tests were performed for one value of the airbackpressure (1.5 MPa; as in modern supercharged DI engines) at theinjection pressures of 5 and 20 MPa. The following comparativeindexes were analyzed: linear and radial spray penetration duringthe injection and the velocity of the spray propagation.The investigation consisted in a visual recording of the processof fuel (ethanol E85) injection realized into a high pressurechamber. The recording was carried out with a high speed camera(High Speed Star 5 by LaVision) fitted with a CMOS monochromaticimage converter. The speed of filming was limited to 10,000 framesper second (time resolution 100 μs) in order to maintain therequired spatial resolution of the performed image analysis(512x512 pixels; pixel size 17x17 μm). For the processing andanalysis of the recorded images the authors used DaVis and CommandLanguage by LaVision.The analysis of the recorded images allowed a determination ofthe influence of the injection pressure on the geometricalparameters of the spray, uniformity of the injection and fuelatomization. The assessment of the radial speed of the spraypropagation was performed with a resolution of 1° on the wholecircumference from the front of the spray cone to the injectionnozzle. This allowed determining of the level of unevenness of theradial spray penetration during the injection depending on theinjection parameters
- Notes:
- Vendor supplied data
- Publisher Number:
- 2010-01-2285
- Access Restriction:
- Restricted for use by site license
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