| Title |
Low-temperature behaviour of the engine oil / |
| Authors |
Kumbár, Vojtěch ; Sabaliauskas, Artūras |
| DOI |
10.11118/actaun201361061763 |
| Full Text |
|
| Is Part of |
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis.. Brno : Mendel University in Brno. 2013, vol. 61, no. 6, p. 1763-1767.. ISSN 1211-8516 |
| Keywords [eng] |
engine oil ; low temperature ; kinematic viscosity ; density ; modeling |
| Abstract [eng] |
The behaviour of engine oil is very important. In this paper has been evaluated temperature dependence kinematic viscosity of engine oils in the low temperatures. Five different commercially distributed engine oils (primarily intended for automobile engines) with viscosity class 0W–40, 5W–40, 10W–40, 15W–40, and 20W–40 have been evaluated. The temperature dependence kinematic viscosity has been observed in the range of temperature from −15 °C to 15 °C (for all oils). Considerable temperature dependence kinematic viscosity was found and demonstrated in case of all samples, which is in accordance with theoretical assumptions and literature data. Mathematical models have been developed and tested. Temperature dependence dynamic viscosity has been modeled using a polynomials 3rd and 4th degree. The proposed models can be used for prediction of flow behaviour of oils. With monitoring and evaluating we can prevent technical and economic losses. |
| Published |
Brno : Mendel University in Brno |
| Type |
Journal article |
| Language |
English |
| Publication date |
2013 |
| CC license |
|
