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Simulation and measurement of carbon dioxide exhaust emissions using an optical-fibre-based mid-infrared point sensor

2009; Springer Science+Business Media; Volume: 11; Issue: 5 Linguagem: Inglês

10.1088/1464-4258/11/5/054013

1741-3567

Razali Muda, Gerard Dooly, John N. Clifford, Jim Mulrooney, Flavia Gili, E. Merlone-Borla, Paul Chambers, Colin Fitzpatrick, Elfed Lewis,

Advanced Sensor Technologies Research

A novel optical-fibre-based sensor for measurement of CO2 gas emission concentrations in exhaust systems of a motor vehicle is reported. The sensing principle is based on open-path direct absorption spectroscopy in the mid-infrared range. The sensor system comprises of low cost and compact mid-infrared components, which make it suitable for insertion into the exhaust system of automotive vehicles. The sensor utilizes a calcium fluoride CaF2 narrow band pass (NBP) filter for detection of CO2 gas without cross-sensitivity to other gases present in the exhaust system. Furthermore, it can be integrated into the mechanical and electronic interface systems of existing vehicles without any problems.