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US 7,741,122 B2Granted
Determination of total base number in marine engine lubricants by elements
AssigneeExxonMobil Research and Engineering Company
InventorP. Thomas Reischman
Life of this patent
Estimating the term…
Abstract
The present invention provides a method for determining the TBN of a used lubricating oil by measuring with a single device at least one element, such as sulfur, and correlating the measured amount to the oil's TBN. Preferably, a spectroscopic device is used to make the measurement.
Claims18
A method comprising:
- a) monitoring TBN of used lubricating oil in equipment comprising:
- i. measuring with a single device the amount of at least sulfur in the used lubricating oil;
- ii. correlating the measured amount of at least sulfur directly to TBN;
- iii. determining the TBN by using the measured amount of at least sulfur in the correlation;
- and
- b) using the TBN to determine the condition of the used lubricating oil in the equipment.
3 more elements
A method comprising:
- a) monitoring TBN of used marine lubricating oil in a marine engine comprising:
- i. spectroscopically measuring the amount of at least sulfur in the oil with a device;
- ii. correlating the measured amount of at least sulfur directly with TBN;
- and
- iii. determining the TBN by using the measured amount of at least sulfur in the correlation;
- b) using the TBN of used marine lubricating oil to determine the condition of the used marine lubricating oil in the marine engine.
3 more elements
Dependencies are inferred from the claim text.