Acta Univ. Agric. Silvic. Mendelianae Brun. 2013, 61(5), 1297-1303 | DOI: 10.11118/actaun201361051297

Oils degradation in agricultural machinery

Vojtěch Kumbár, Petr Dostál
Department of Engineering and Automobile Transport, Mendel University in Brno, Zemědělská 1, 613 00 Brno, Czech Republic

Evaluating of oils condition in agricultural machinery is very important. With monitoring and evaluating we can prevent technical and economic losses. In this paper there were monitored the liquid lubricants taken from mobile thresher New Holland CX 860. Chemical and viscosity degradation of the lubricants were evaluated. Temperature dependence dynamic viscosity was observed in the range of temperature from -10 °C to 80 °C (for all oils). Considerable temperature dependence dynamic viscosity was found and demonstrated in case of all samples, which is in accordance with theoretical assumptions and literature data. Mathematical models were developed and tested. Temperature dependence dynamic viscosity was modeled using a polynomial 6th degree. The proposed models can be used for prediction of flow behavior of oils.

Keywords: oils, chemical degradation, viscosity degradation, modeling
Grants and funding:

The research has been supported by the project TP 5/2013 "Application of non-destructive methods of technical diagnostics in agricultural technology", financed by IGA AF MENDELU.

Received: May 23, 2013; Published: September 28, 2013  Show citation

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Kumbár, V., & Dostál, P. (2013). Oils degradation in agricultural machinery. Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis, 61(5), 1297-1303. doi: 10.11118/actaun201361051297
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    References

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