Title :
A micro-acoustic wave sensor for engine oil quality monitoring
Author_Institution :
Lubrizol Corp., Wickliffe, OH, USA
Abstract :
A micro-acoustic wave sensor based on the thickness shear mode (TSM) quartz resonator has been investigated for engine oil quality monitoring through the viscosity measurement. Effects of the fluid mechanical and electrical properties on the TSM resonator with both sides in contact with the fluid have been studied and compared to the 1-sided device. Sensor prototypes based on both the 1- and 2-sided TSM resonators have been developed and tested in various fresh and used engine oils.
Keywords :
bulk acoustic wave devices; crystal resonators; dielectric liquids; electric impedance; electrical conductivity; microsensors; oils; permittivity; prototypes; surface acoustic wave sensors; viscosity measurement; electrical properties; engine oil quality monitoring; fluid mechanical properties; microacoustic wave sensor; quartz resonator; sensor prototypes; thickness shear mode; viscosity measurement; Contacts; Engines; Mechanical factors; Mechanical sensors; Monitoring; Petroleum; Prototypes; Testing; Thickness measurement; Viscosity;
Conference_Titel :
Frequency Control Symposium and PDA Exhibition Jointly with the 17th European Frequency and Time Forum, 2003. Proceedings of the 2003 IEEE International
Print_ISBN :
0-7803-7688-9
DOI :
10.1109/FREQ.2003.1275222
