Fuel Stratification in a Liquid-Phase LPG Injection Engine

2003-01-1777

05/19/2003

Event
2003 JSAE/SAE International Spring Fuels and Lubricants Meeting
Authors Abstract
Content
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.
Meta TagsDetails
DOI
https://doi.org/10.4271/2003-01-1777
Pages
8
Citation
Oh, 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.
Additional Details
Publisher
Published
May 19, 2003
Product Code
2003-01-1777
Content Type
Technical Paper
Language
English