Methods for detecting contaminations in vehicle coolant systems
AssigneeGM Global Technology Operations LLC
InventorsThomas J. Chapaton, Nicholas Paul William Pieczonka, William Reginald Collin, Ratandeep Singh Kukreja
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Abstract
A method for detecting a contaminant in a vehicle coolant system during service includes contacting a chromophore impregnated strip and a heat transfer fluid sample, where the chromophore impregnated strip includes a complexing agent selected to form a complex with the contaminant that causes a color change in the chromophore impregnated strip and thereby indicates the presence of the contaminant in the heat transfer fluid sample.
Claims18
A method for detecting a contaminant in a vehicle coolant system during service, the method comprising:
- contacting a chromophore impregnated strip and a heat transfer fluid sample, the chromophore impregnated strip comprising a complexing agent selected from the group consisting of:
- rhodamine hydrazides, branched polyethylenimines, gold nanoparticles, quercetin, myricetin, eriochrome black T, and combinations thereof, the complexing agent forming a complex with the contaminant to indicate the presence of the contaminant in the heat transfer fluid sample.
A method for detecting contaminants in a vehicle coolant system during service, the method comprising:
- contacting a chromophore impregnated strip and a heat transfer fluid sample, the chromophore impregnated strip comprising a first complexing agent and a second complexing agent distinct from the first complexing agent, the first complexing agent being selected to form a complex with a first contaminant that causes a first color change in the chromophore impregnated strip at a first location indicating the presence of the first contaminant in the heat transfer fluid sample, and the second complexing agent being selected to form a complex with a second contaminant that causes a second color change in the chromophore impregnated strip at a second location indicating the presence of the second contaminant in the heat transfer fluid sample, and the first and second contaminants comprising one or more compounds comprising elements independently selected from the group consisting of:
- aluminum, copper, fluorine, and combinations thereof.
A kit for detecting a contaminant in a vehicle coolant system during service, the kit comprising:
- a chromophore impregnated strip comprising a complexing agent selected to form a complex when contacted to the contaminant that causes a color change in the chromophore impregnated strip indicating the presence of the contaminant;
- and the complexing agent selected from the group consisting of:
- rhodamine hydrazides, branched polyethylenimines, gold nanoparticles, quercetin, myricetin, eriochrome black T, and combinations thereof.
Dependencies are inferred from the claim text.