A study on needle crystals formation in engine oils containing a magnesium-based detergent
In the case of some engine oils, under specific conditions, engine oil additives may precipitate in the form of needle crystals which cause clogging of oil filters. A simple laboratory test has been developed to study the formation of needle crystal precipitates in engine oils. The influences of various conditions and the combination of engine oil additives on this formation were investigated using this test procedure. This laboratory testing showed that needle crystals form when the engine oil containing a magnesium-based detergent comes into contact with both water and carbonic acid under restricted conditions. It was discovered that there is a large difference in the formation of needle crystals between different magnesium-based detergents.
- OSTI ID:
- 5791294
- Report Number(s):
- CONF-8810120-
- Resource Relation:
- Conference: Society of Automotive Engineers fuels and lubricants meeting and exposition, Portland, OR, USA, 10-13 Oct 1988; Other Information: Technical Paper 881588
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
33 ADVANCED PROPULSION SYSTEMS
LUBRICATING OILS
CRYSTALLIZATION
ADDITIVES
CARBONIC ACID
CRYSTALS
INTERNAL COMBUSTION ENGINES
LUBRICATION
MAGNESIUM COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CARBON COMPOUNDS
ENGINES
HEAT ENGINES
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LUBRICANTS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PETROLEUM PRODUCTS
PHASE TRANSFORMATIONS
023000* - Petroleum- Properties & Composition
330100 - Internal Combustion Engines