High throughput screening methods for lubricating oil compositions
First Claim
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1. A high throughput system for screening a plurality of lubricating oil compositions, comprising:
- a) a supply of a major amount of at least one base oil of lubricating viscosity;
b) a supply of a minor amount of at least one lubricating oil additive;
c) a plurality of test receptacles;
d) means for conducting molecular modeling of the at least one base oil of lubricating viscosity and the at least one lubricating oil additive to provide leading candidates of the at least one base oil of lubricating viscosity and at least one lubricating oil additive for combination to formulate a leading candidate lubricating oil composition for testing;
e) means for combining selected quantities of the major amount of the at least one leading base oil of lubricating viscosity candidate with selected quantities of the minor amount of the at least one leading lubricating oil additive candidate in the plurality of test receptacles to form a plurality of leading candidate lubricating oil composition samples in the plurality of test receptacles;
f) a moving unit configured to individually position each of the plurality of leading candidate lubricating oil composition samples in a testing station to test each of the leading candidate lubricating oil composition samples for wear stability and measure the wear stability of each test; and
,g) a controller coupled to the testing station and configured to receive and store the measurements of the wear stability tests of each of the plurality of leading candidate lubricating oil composition samples.
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Abstract
A method for determining storage stability for a plurality of fluid lubricant samples of different lubricating oil compositions is provided. Each sample includes a combination of one or more base oils and one or more lubricating oil additives. The methods can advantageously be optimized using combinatorial chemistry, in which a database of combinations of lubricating oil additives or lubricating oil compositions containing such additives is generated. As market conditions vary and/or product requirements or customer specifications change, conditions suitable for forming desired products can be identified with little or no downtime.
103 Citations
39 Claims
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1. A high throughput system for screening a plurality of lubricating oil compositions, comprising:
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a) a supply of a major amount of at least one base oil of lubricating viscosity; b) a supply of a minor amount of at least one lubricating oil additive; c) a plurality of test receptacles; d) means for conducting molecular modeling of the at least one base oil of lubricating viscosity and the at least one lubricating oil additive to provide leading candidates of the at least one base oil of lubricating viscosity and at least one lubricating oil additive for combination to formulate a leading candidate lubricating oil composition for testing; e) means for combining selected quantities of the major amount of the at least one leading base oil of lubricating viscosity candidate with selected quantities of the minor amount of the at least one leading lubricating oil additive candidate in the plurality of test receptacles to form a plurality of leading candidate lubricating oil composition samples in the plurality of test receptacles; f) a moving unit configured to individually position each of the plurality of leading candidate lubricating oil composition samples in a testing station to test each of the leading candidate lubricating oil composition samples for wear stability and measure the wear stability of each test; and
,g) a controller coupled to the testing station and configured to receive and store the measurements of the wear stability tests of each of the plurality of leading candidate lubricating oil composition samples. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A high throughput system for screening a plurality of lubricating oil compositions, under program control, comprising:
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(a) a plurality of test receptacles, each containing a different lubricating oil composition each comprising (i) a major amount of at least one base oil of lubricating viscosity and (ii) a minor amount of at least one lubricating oil additive; (b) a moving unit configured to individually position each of the plurality of lubricating oil compositions in a testing station to test each of the lubricating oil compositions for wear stability and measure the wear stability of each test, wherein the wear stability test is selected from the group consisting of an extreme pressure wear test, hydrodynamic wear test, corrosive wear test and a combination thereof; and
,(c) a controller coupled to the testing station and configured to receive and store the measurements of each of the extreme pressure, hydrodynamic and corrosive wear tests of each of the plurality of lubricating oil compositions, thereby assembling a library of the outputted results associated with each of the plurality of lubricating oil compositions, wherein each one of the wear tests is selected to be indicative of performance of a selected part of or an entire running internal combustion engine; and
comparing the outputted results of at least one of the extreme pressure, hydrodynamic and corrosive wear tests of the plurality of lubricating oil compositions to a stored reference value selected from desired operating conditions or statutory requirements in accordance with the program control, wherein the controller has software operating thereon for analyzing a rate of change of a result of each of the extreme pressure, hydrodynamic and corrosive tests of a respective one of the plurality of lubricating oil compositions to select multiple groups thereof, each of which includes the lubricating oil compositions better suited for a particular one of the extreme pressure, hydrodynamic and corrosive tests. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A high throughput system for screening a plurality of lubricating oil compositions, under program control, comprising:
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a) a supply of a major amount of at least one base oil of lubricating viscosity; b) a supply of a minor amount of at least one lubricating oil additive; c) a plurality of test receptacles; d) means for conducting molecular modeling of the at least one base oil of lubricating viscosity and the at least one lubricating oil additive to provide leading candidates of the at least one base oil of lubricating viscosity and at least one lubricating oil additive for combination to formulate a leading candidate lubricating oil composition for testing; e) means for combining selected quantities of the major amount of the at least one leading base oil of lubricating viscosity candidate with selected quantities of the minor amount of the at least one leading lubricating oil additive candidate in the plurality of test receptacles to form a plurality of leading candidate lubricating oil composition samples in the plurality of test receptacles; f) moving unit configured to individually position each of the plurality of lubricating oil compositions in a testing station to test of the leading candidate lubricating oil composition samples for wear stability and measure the wear stability of each test, wherein the wear stability test is selected from the group consisting of an extreme pressure wear test, hydrodynamic wear test, corrosive wear test and a combination thereof; and
,g) a controller coupled to the testing station and configured to receive and store the measurements of each of the extreme pressure, hydrodynamic and corrosive wear tests of each of the plurality of lubricating oil compositions, thereby assembling a library of the outputted results associated with each of the plurality of leading candidate lubricating oil composition samples, wherein each one of the wear tests is selected to be indicative of performance of a selected part of or an entire running internal combustion engine; and
further configured to analyze a change of the outputted results of each of the extreme pressure, hydrodynamic and corrosive wear stability tests stored in the library upon changing a plurality of conditions in accordance with the program control. - View Dependent Claims (33, 34, 35, 36, 37, 38, 39)
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Specification