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US 5,857,266 AGranted
Heat exchanger having aluminum alloy parts exhibiting high strength at elevated temperatures
AssigneeAlliedSignal Inc.
InventorsDerek Raybould, Jerry Capriotti LaSalle
Life of this patent
Estimating the term…
Abstract
A heat exchanger includes one or more parts composed of a braze clad aluminum alloy having a composition defined essentially by the formula: Al 1.1% Mn 1.1% Mg 0.15 Cu and being brazed to other aluminum parts. The heat exchanger exhibits usable strength at operating temperatures ranging up to 232.degree. C. 450.degree. F!, and is especially suited for use in the charge air cooler of a diesel engine.
Claims4
A method for operating a charge-air-cooler comprising the steps of
- forming a header from a core alloy having a composition defined essentially by the formula:
- Al 0.7-1.6% Mn 0.8-2.0% Mg 0.05-0.5 Cu;
- forming at least one tube from said core alloy clad with an AlSi alloy;
- brazing said at least one tube to said header at a temperature above 550.degree. C.;
- connecting said charge-air-cooler to an outlet of a turbocharger compressor and operating said charge-air-cooler at temperatures between about 177.degree. C. and 232.degree. C. for a sustained period of time.
2 more elements
A method for operating a charge-air-cooler comprising the steps of
- forming at least one tube from a core alloy having a composition defined essentially by the formula:
- Al 0.7-1.6% Mn 0.8-2.0% Mg 0.05-0.5 Cu;
- forming a header from said core alloy clad with an AlSi alloy;
- brazing said at least one tube to said header at a temperature above 550.degree. C.;
- connecting said charge-air-cooler to an outlet of a turbocharger compressor and operating said charge-air-cooler at temperatures between about 177.degree. C. and 232.degree. C. for a sustained period of time.
2 more elements
Dependencies are inferred from the claim text.