Determination of total base number in marine engine lubricants by elements
First Claim
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1. 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.
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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.
18 Citations
18 Claims
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1. A method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 13, 14, 15, 17)
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8. A method comprising:
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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. - View Dependent Claims (9, 10, 11, 12, 16, 18)
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