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Fiber optic sensor  for diesel engine smoke measurement

UNICAMP, Campinas, Brazil

Abstract

A portable fibre optic sensor for diesel smoke measurements is described. The sensor works by sampling the smoke on the surface of a gluing white tape and measuring the diffuse reflectance from the stained tape. The precision of the detector system was 0.2%. The sensor values of diesel smoke (Rs) were compared with the results obtained using a Bosch smokemeter (Bn). A plot of Rs against Bn yielded a straight line with correlation coefficient of 0.983. Values of Rs were also expressed as a function of diesel smoke concentration. The sensor can perform continuous and remote measurements. It is of simple construction and operation and is particularly useful for on-road measurements. [Author abstract; 19 Refs; In English]

Index Terms: Chemical sensors; Fiber optic sensors; Smoke; Diesel engines; Diesel engine smoke measurement

Sensors and Actuators, B: Chemical
Volume B41, Issue 1-3
Pages 159-162
June 1997 1