1. Feasibility Study on Shear Horizontal Surface Acoustic Wave Sensors for Engine Oil Evaluation
- Author
-
Jun Kondoh and Saya Kobayashi
- Subjects
Materials science ,particle ,engine oil ,Relative permittivity ,heating ,water contained in oil ,02 engineering and technology ,Conductivity ,lcsh:Chemical technology ,01 natural sciences ,Biochemistry ,Article ,Analytical Chemistry ,electrical perturbation ,Viscosity ,lcsh:TP1-1185 ,Electrical and Electronic Engineering ,Instrumentation ,Petroleum engineering ,010401 analytical chemistry ,Surface acoustic wave ,021001 nanoscience & nanotechnology ,Atomic and Molecular Physics, and Optics ,0104 chemical sciences ,Shear horizontal ,shear horizontal surface acoustic wave sensor ,Particle ,Degradation (geology) ,Surface acoustic wave sensor ,mechanical perturbation ,0210 nano-technology - Abstract
On site monitoring of engine oil is required. The features of a shear horizontal surface acoustic wave (SH-SAW) sensor include simultaneous detection of mechanical and electrical properties of liquids (such as viscosity, relative permittivity, and conductivity) and loaded mass on the sensor surface. In this paper, the used engine oil extracted from a motorbike was measured using the SH-SAW sensor. The degradation factors of the used engine oil were experimentally discussed. Especially, the influences of the particles in the engine oil, heating effect, and water contained in the engine oil were considered by comparing the differences between new and used engine oils. The results indicate that the influence of the water contained in the engine oil is the primary cause of the degradation of the used engine oil.
- Published
- 2020