Development of dielectric sensor to monitor the engine lubricating oil degradation
Present day practice of following fixed schedules of oil change intervals could result in loss for the equipment owner, as the oil is not utilized up-to its maximum useful life. Similarly, the extended use of engine oil beyond maximum useful life is of high risk, which could lead irreversib...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
VINCA Institute of Nuclear Sciences
2016-01-01
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| Series: | Thermal Science |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0354-9836/2016/0354-983616061B .pdf |
| Summary: | Present day practice of following fixed schedules of oil change intervals
could result in loss for the equipment owner, as the oil is not utilized
up-to its maximum useful life. Similarly, the extended use of engine oil
beyond maximum useful life is of high risk, which could lead irreversible and
catastrophic damages to engine parts. Engine oil condition indicates the
condition of engine parts, in any application. Therefore, monitoring the
condition of the oil in real time is of paramount importance. Researchers had
established that the engine oil degradation correlates with change in
dielectric property of the engine oil. The important factor to realize the
on-line real time monitoring of the changes in dielectric property of the
engine oil is, the cost of dielectric sensor within affordable limit for an
operator. Current work aims at developing such a low cost affordable
dielectric sensor and engine oil samples (SAE 15W40 grade) were collected
from durability test engines used in engine test rig and on-road vehicles.
These samples were tested for physical and chemical properties. Any changes
in the properties, of engine oil monitored, indicate that it undergoes
degradation due to usage. A prototype of capacitive type sensor was developed
and validated with reference fluids. The dielectric values measured using
proto type sensor in the used oil samples show a correlation with change in
physical properties. This trend and thresholds of dielectric provides
effective plat form to monitor the engine oil degradation. The sensor could
be coupled to a suitable warning device by incorporating specific algorithms. |
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| ISSN: | 0354-9836 2334-7163 |