APPLICATION OF TUNABLE DIODE-LASER SPECTROSCOPY TO THE REAL-TIME ANALYSIS OF ENGINE OIL ECONOMY

被引：6

作者：

CARDUNER, KR ^{[1
]}

COLVIN, AD ^{[1
]}

LEONG, RY ^{[1
]}

SCHUETZLE, D ^{[1
]}

MACKAY, GI ^{[1
]}

KARECKI, DR ^{[1
]}

SCHIFF, HI ^{[1
]}

机构：

[1] UNISEARCH ASSOCIATES INC,CONCORD L4K 1B5,ONTARIO,CANADA

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 1992年 / 26卷 / 05期

关键词：

D O I：

10.1021/es00029a010

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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 s, the time related to the flow rate of the sampling system. Instrument sensitivity is sufficient to measure SO2 levels of 0.1-1 ppm required for 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, is expected to be a problem for any analytical device, and is best solved by using a heated sampling line.

引用

页码：930 / 934

页数：5

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