End-gas temperature measurements in a DOHC spark-ignition engine using CARS

Author

Inyong Choi ; Kwang Min Chun ; Chul-Woung Park ; Jae Won Hahn

Author_Institution

Dept. of Mech. Eng., Yonsei Univ., Seoul, South Korea

Volume

3

fYear

1999

fDate

Aug. 30 1999-Sept. 3 1999

Firstpage

823

Abstract

We adopted a broadband CARS technique to measure end-gas temperatures in a combustion chamber of a conventional 4-cylinder DOHC spark-ignition engine. A mobile CARS system measured a full CARS spectrum on a shot by shot basis. The system consisted of a frequency doubled Nd:YAG laser (Continuum Surlite II), broadband modeless dye laser and a monochromator equipped with an optical multi-channel analyzer (RG&G 1420).

Keywords

coherent antiStokes Raman scattering; internal combustion engines; spectral methods of temperature measurement; CARS; DOHC spark-ignition engine; YAG:Nd; YAl5O12:Nd; broadband CARS technique; broadband modeless dye laser; combustion chamber; conventional 4-cylinder DOHC spark-ignition engine; end-gas temperature measurements; frequency doubled Nd:YAG laser; full CARS spectrum; mobile CARS system; monochromator; optical multi-channel analyzer; shot by shot basis; Engine cylinders; Fires; Gas lasers; Internal combustion engines; Measurement standards; Optical harmonic generation; Pressure measurement; Spatial resolution; Spectroscopy; Temperature measurement;

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.1999.817852

Filename

817852