A Mathematical and Experimental analysis of degradation of lubricating oil in four stroke Motorbikes

Mr. S Bordoloi


This paper presents a mathematical and experimental analysis of degradation of lubricating oil used in four-stroke motor bikes. For mathematical analysis, Debye equation have been related to the dielectric constant and temperature of lubricating oil samples of four stroke motorbikes The instrumentation system used for experimentation consists of (i) a coaxial cylindrical capacitor and a LM35 IC as sensors (ii) A ATmega 32 based microcontroller system for sampling, processing and display of signal. The coaxial cylindrical capacitive sensor and LM35 are used to provide the measure of dielectric constant and temperature of a lubricating oil sample.

Full Text:



L. Leugner, 2005; “SAE oil Viscosity Classification.The Practical Handbook of Machinery Lubrication. Noria Publishing4, 180.

AMSOIL Power Sports Group, 2005; A Study of Motorcycle oils. Tech. Rep. 2, 1- 27.

A Carey,1998: The Dielectric Constant of Lubrication Oils. Computational Systems Incorporated 835 Innovation Drive Knoxville,423, pp. 675-683.

Abedian, B., Baker, K. N., 2008: Temperature Effects on the Electrical Conductivity of Dielectric Liquids. IEEE Transactions on Dielectrics and Electrical Insulation, 15, pp. 888-892.

Agoston, A., Otsch, C., Jakoby, B., 2005: Viscosity sensors for engine oil condition monitoring-Application and Interpretation of results. Sensors and Actuators A, 121,327-332.

nežević, D., Savić V., 2006: Mathematical modeling of changing of dynamic viscosity, as a function of temperature and pressure, of mineral oils for hydraulic systems. Facta Universitatis Series: Mechanical Engineering, 4, 27 – 34.

Datasheet of LM35 Precision Centigrade Temperature Sensors-Texas Instruments.


  • There are currently no refbacks.