Title :
A novel method based on gas microsensors to analyze diesel engine oil contaminated by diluent unburned diesel fuel
Author :
Capone, Simonetta ; Epifani, Mauro ; Francioso, Luca ; Presicce, Dominique S. ; Siciliano, Pietro ; Carlucci, Paolo
Author_Institution :
Inst. of Mycroelectron. & Microsyst., Lecce
Abstract :
We developed a novel method to detect the presence of unburned diesel fuel in used diesel fuel engine oil. The method is based on the use of an array of different gas microsensors based on metal oxide thin films deposited by sol-gel technique on Si substrates. The sensor array, exposed to the volatile chemical species of different diesel fuel engine oil samples contaminated in different percentages by diesel fuel, resulted to be appreciable sensitive to them. Principal Component Analysis (PCA) applied to the sensor response data-set gave a first proof of the sensor array ability to discriminate among the differently diesel fuel diluted lubricating oils. Moreover, in order to get information about the headspace composition of the diesel fuel-contaminated engine oils used for gas-sensing tests, we analyzed the engine oil samples by Static Headspace Solid Phase Micro Extraction/Gas Chromatograph/Mass Spectrometer (SHS-SPME/GC/MS).
Keywords :
diesel engines; gas sensors; microsensors; principal component analysis; sol-gel processing; diesel fuel engine oil; diluent unbumed diesel fuel; gas microsensors; metal oxide thin films; principal component analysis; sensor array; sol-gel technique; Chemical sensors; Diesel engines; Fuels; Lubricating oils; Microsensors; Petroleum; Principal component analysis; Semiconductor thin films; Sensor arrays; Sputtering;
Conference_Titel :
Sensors, 2006. 5th IEEE Conference on
Conference_Location :
Daegu
Print_ISBN :
1-4244-0375-8
Electronic_ISBN :
1930-0395
DOI :
10.1109/ICSENS.2007.355887