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Proceedings Paper

Application of tunable diode laser spectroscopy to the real-time analysis of engine oil economy
Author(s): Keith R. Carduner; A. D. Colvin; D. Y. Leong; Dennis Schuetzle; Gervase I. Mackay
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Paper Abstract

Tunable Diode Laser Spectroscopy (TDLAS) of oil derived SO2 in automotive exhaust demonstrated acceptable repeatability in determination of oil consumption at steady state engine operating conditions. The response time of the instrument was approximately 30 sec, the time related to the flow rate of the sampling system. Instrument sensitivity is sufficient to measure SO2 levels of 0.1 to 1 ppm required to the oil consumption determination. Typical exhaust gas species were investigated for their interference effects and were observed to have less than a 10% interference on the SO2 signal for mixing ratios with SO2 typical of automotive exhaust. Water, on the other hand, did show a significant, but compensatible interference. Carbon deposition under rich engine conditions was observed and is expected to be a problem for any analytical device and is best solved by using a heated sampling line.

Paper Details

Date Published: 1 May 1991
PDF: 12 pages
Proc. SPIE 1433, Measurement of Atmospheric Gases, (1 May 1991); doi: 10.1117/12.46176
Show Author Affiliations
Keith R. Carduner, Ford Motor Co. (United States)
A. D. Colvin, Ford Motor Co. (United States)
D. Y. Leong, Ford Motor Co. (United States)
Dennis Schuetzle, Ford Motor Co. (United States)
Gervase I. Mackay, Unisearch Associates Inc. (Canada)

Published in SPIE Proceedings Vol. 1433:
Measurement of Atmospheric Gases
Harold I. Schiff, Editor(s)

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