Özet:

Predictive maintenance methods allow failures that may occur in complex engineering systems to be controlled beforehand. Vibration, ultrasonic testing, thermal imaging, and oil analysis are predictive maintenance methods. These methods prevent possible malfunctions by obtaining and examining the data determined according to the system and equipment requirements through sensors before the malfunction occurs or reaches profound dimensions. In this study, heavy diesel engine oil (10W-40) was diluted by adding %1, %2, %5, and 10% by weight of biodiesel fuel. Viscosity and density performances of heavy diesel engine oil diluted with biofuel were evaluated using Anton Paar Automated Micro Viscometer and DMA 4500 Density Meter at temperatures 40, 60, 80, and 90 ℃. It was observed that the amount of fuel in engine oil could be detectable through the viscosity and density values. As the dilution increases, the viscosity decreases, but the density increases and the change in density is not affected by the temperature, but the temperature affects the change in the viscosity values. In particular, while the temperature-dependent effect of fuel dilution on viscosity was constant up to 5%, the temperature-dependent behavior changed as the dilution increased.

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