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Fuel Stratification in a Liquid-Phase LPG Injection Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published May 19, 2003 by SAE International in United States
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To investigate the mixture distributions in an LPG engine with Liquid phase port injection for heavy duty vehicles, an optical single cylinder engine, which is optically accessible both in side and bottom view, and laser diagnostic system were incorporated to apply PLIF (planar laser induced fluorescence) technique. Acetone was used as a dopant in LPG fuel, which was excited by KrF excimer laser (248nm), and its fluorescence images were acquired with ICCD camera. The effects of fuel injection timing, swirl intensity and excess air ratio were investigated. For the case of open valve injection, favorable stratification of fuel, both in axial and radial direction, was clearly observed compared to the closed valve injection, where reverse stratification in axial direction was observed. At the Ricardo swirl ratio of 3.4, it was apparent that excessive axial stratification of fuel got dominant, which would lead to poor engine performances.
- Youngmin Woo - Korea Advanced Institute of Science and Technology
- Choongsik Bae - Korea Advanced Institute of Science and Technology
- Seungmook Oh - Korea Institute of Machinery and Materials
- Yonggyu Lee - Korea Institute of Machinery and Materials
- Kernyong Kang - Korea Institute of Machinery and Materials
CitationOh, S., Lee, Y., Kang, K., Woo, Y. et al., "Fuel Stratification in a Liquid-Phase LPG Injection Engine," SAE Technical Paper 2003-01-1777, 2003, https://doi.org/10.4271/2003-01-1777.
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