Title of article
Toward in-cylinder absorption tomography in a production engine
Author/Authors
Turner، Paul نويسنده , , Wright، Paul نويسنده , , Garcia-Stewart، Charles A. نويسنده , , Carey، Stephen J. نويسنده , , Hindle، Francis P. نويسنده , , Pegrum، Stephen H. نويسنده , , Colbourne، Stephen M. نويسنده , , Hurr، William J. نويسنده , , Litt، Tim J. نويسنده , , Murray، Stuart C. نويسنده , , CrossleyR، Sam D. نويسنده , , Ozanyan، Krikor B. نويسنده , , McCann، Hugh نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
-6577
From page
6578
To page
0
Abstract
Design requirements for an 8000 frame/s dual-wavelength ratiometric chemical species tomography system, intended for hydrocarbon vapor imaging in one cylinder of a standard automobile engine, are examined. The design process is guided by spectroscopic measurements on iso-octane and by comprehensive results from laboratory phantoms and research engines, including results on temporal resolution performance. Novel image reconstruction techniques, necessary for this application, are presented. Recent progress toward implementation, including details of the optical access arrangement employed and signal-to-noise issues, is described. We present first cross-cylinder IR absorption measurements from a reduced channel-count (nontomographic) system and discuss the prospects for imaging.
Keywords
statistical optics , Speckle , instrumentation , Measurement , Surface measurements , Roughness , scattering , Ultrafast optics , Ultrafast phenomena , COHERENCE , rough surfaces , Metrology
Journal title
Applied Optics
Serial Year
2005
Journal title
Applied Optics
Record number
74783
Link To Document