Fuel and OH radical distribution measurements in a SI engine using planar laser induced fluorescence

Author

Seung-Mook Oh ; Dong-Seob Ko ; Jung-Jae Lee

Author_Institution

Eng. R&D Dept., Korea Inst. of Machinery & Metals, Taejon, South Korea

Volume

3

fYear

1999

fDate

Aug. 30 1999-Sept. 3 1999

Firstpage

825

Abstract

There are two important factors in the combustion chamber of an engine to improve engine performance and emissions. One is air-fuel mixture preparation related to flow field and the other combustion flames. Improper mixture preparation causes poor combustion and bad emissions, which then lead to unstable engine operation. To study these phenomena, we have applied laser induced fluorescence to an optical accessible engine. Fuel concentration images are acquired during intake and compression processes. Also, during combustion the OH radical is excited by KrF excimer laser on Q/sub 1/(11) and P/sub 2/(8) line.

Keywords

fluorescence; free radicals; fuel; internal combustion engines; oxygen compounds; spectrochemical analysis; KrF; KrF excimer laser; OH; OH radical distribution measurements; SI engine; air-fuel mixture preparation; combustion chamber; combustion flames; compression process; emissions; engine performance; flow field; fuel concentration images; improper mixture preparation; intake process; optical accessible engine; planar laser induced fluorescence; unstable engine operation; Combustion; Engine cylinders; Fires; Fluorescence; Fuels; Laser theory; Optical filters; Optical scattering; Timing; Valves;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 1999. CLEO/Pacific Rim '99. The Pacific Rim Conference on

Conference_Location

Seoul, South Korea

Print_ISBN

0-7803-5661-6

Type

conf

DOI

10.1109/CLEOPR.1999.817853

Filename

817853