Measuring of exhaust gas emissions using absorption spectroscopy
by Eamonn Hawe, Gerard Dooly, Colin Fitzpatrick, Paul Chambers, Elfed Lewis, W.Z. Zhao, T. Sun, K.T.V. Grattan, M. Degner, H. Ewald, S. Lochmann, G. Bramman, C. Wei, D. Hitchen, J. Lucas, A. Al-Shamma'a, E. Merlone-Borla, P. Faraldi, M. Pidria
International Journal of Intelligent Systems Technologies and Applications (IJISTA), Vol. 3, No. 1/2, 2007

Abstract: This paper describes an optical fibre sensor for the detection of NOx (NO2 and NO) and CO2 in the exhaust system of a road vehicle. The measurement is based on a free path interaction zone which is interrogated using UV and NIR light guiding optical fibres and collimated lenses. Results are presented in the absorption spectra of the gases in the UV region for the NOx gases and NIR region for CO2. These demonstrate that using this method it is feasible to identify the individual CO2, NO and NO2 species as well as other gases in the exhaust system. Measurement of concentrations to the level of ten's parts per million (ppm) have been demonstrated for the NOxx gases.

Online publication date: Fri, 22-Jun-2007

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Intelligent Systems Technologies and Applications (IJISTA):
Login with your Inderscience username and password:

    Username:        Password:         

Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email