Temperature dependent kinematic viscosity of different types of engine oils
The objective of this study is to measure how the viscosity of engine oil changes with temperature. Six different commercially distributed engine oils (primarily intended for motorcycle engines) of 10W–40 viscosity grade have been evaluated. Four of the oils were of synthetic type, two of semi–synth...
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| Format: | Article |
| Language: | English |
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Mendel University Press
2009-01-01
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| Series: | Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis |
| Subjects: | |
| Online Access: | https://acta.mendelu.cz/57/4/0095/ |
| _version_ | 1828385105002889216 |
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| author | Libor Severa Miroslav Havlíček Vojtěch Kumbár |
| author_facet | Libor Severa Miroslav Havlíček Vojtěch Kumbár |
| author_sort | Libor Severa |
| collection | DOAJ |
| description | The objective of this study is to measure how the viscosity of engine oil changes with temperature. Six different commercially distributed engine oils (primarily intended for motorcycle engines) of 10W–40 viscosity grade have been evaluated. Four of the oils were of synthetic type, two of semi–synthetic type. All oils have been assumed to be Newtonian fluids, thus flow curves have not been determined. Oils have been cooled to below zero temperatures and under controlled temperature regulation, kinematic viscosity (mm2 / s) have been measured in the range of −5 °C and +115 °C. Anton Paar digital viscometer with concentric cylinders geometry has been used. In accordance with expected behavior, kinematic viscosity of all oils was decreasing with increasing temperature. Viscosity was found to be independent on oil’s density. Temperature dependence has been modeled using several mathematical models – Vogel equation, Arrhenius equation, polynomial, and Gaussian equation. The best match between experimental and computed data has been achieved for Gaussian equation (R2 = 0.9993). Knowledge of viscosity behavior of an engine oil as a function of its temperature is of great importance, especially when considering running efficiency and performance of combustion engines. Proposed models can be used for description and prediction of rheological behavior of engine oils. |
| first_indexed | 2024-12-10T05:13:51Z |
| format | Article |
| id | doaj.art-ef48e982f1ca4b07867bf200d2efb1ca |
| institution | Directory Open Access Journal |
| issn | 1211-8516 2464-8310 |
| language | English |
| last_indexed | 2024-12-10T05:13:51Z |
| publishDate | 2009-01-01 |
| publisher | Mendel University Press |
| record_format | Article |
| series | Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis |
| spelling | doaj.art-ef48e982f1ca4b07867bf200d2efb1ca2022-12-22T02:01:01ZengMendel University PressActa Universitatis Agriculturae et Silviculturae Mendelianae Brunensis1211-85162464-83102009-01-015749510210.11118/actaun200957040095Temperature dependent kinematic viscosity of different types of engine oilsLibor Severa0Miroslav Havlíček1Vojtěch Kumbár2Ústav techniky a automobilové dopravy, Mendelova zemědělská a lesnická univerzita v Brně, Zemědělská 1, 613 00 Brno, Česká republikaÚstav techniky a automobilové dopravy, Mendelova zemědělská a lesnická univerzita v Brně, Zemědělská 1, 613 00 Brno, Česká republikaÚstav techniky a automobilové dopravy, Mendelova zemědělská a lesnická univerzita v Brně, Zemědělská 1, 613 00 Brno, Česká republikaThe objective of this study is to measure how the viscosity of engine oil changes with temperature. Six different commercially distributed engine oils (primarily intended for motorcycle engines) of 10W–40 viscosity grade have been evaluated. Four of the oils were of synthetic type, two of semi–synthetic type. All oils have been assumed to be Newtonian fluids, thus flow curves have not been determined. Oils have been cooled to below zero temperatures and under controlled temperature regulation, kinematic viscosity (mm2 / s) have been measured in the range of −5 °C and +115 °C. Anton Paar digital viscometer with concentric cylinders geometry has been used. In accordance with expected behavior, kinematic viscosity of all oils was decreasing with increasing temperature. Viscosity was found to be independent on oil’s density. Temperature dependence has been modeled using several mathematical models – Vogel equation, Arrhenius equation, polynomial, and Gaussian equation. The best match between experimental and computed data has been achieved for Gaussian equation (R2 = 0.9993). Knowledge of viscosity behavior of an engine oil as a function of its temperature is of great importance, especially when considering running efficiency and performance of combustion engines. Proposed models can be used for description and prediction of rheological behavior of engine oils.https://acta.mendelu.cz/57/4/0095/engine oilkinematic viscositymodeling |
| spellingShingle | Libor Severa Miroslav Havlíček Vojtěch Kumbár Temperature dependent kinematic viscosity of different types of engine oils Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis engine oil kinematic viscosity modeling |
| title | Temperature dependent kinematic viscosity of different types of engine oils |
| title_full | Temperature dependent kinematic viscosity of different types of engine oils |
| title_fullStr | Temperature dependent kinematic viscosity of different types of engine oils |
| title_full_unstemmed | Temperature dependent kinematic viscosity of different types of engine oils |
| title_short | Temperature dependent kinematic viscosity of different types of engine oils |
| title_sort | temperature dependent kinematic viscosity of different types of engine oils |
| topic | engine oil kinematic viscosity modeling |
| url | https://acta.mendelu.cz/57/4/0095/ |
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