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US 2003/0140495 A1Published application
Exhaust emission control device manufacturing method
AssigneeDelphi Technologies, Inc.
InventorsJeffrey B. Hardesty, Paul E. Jankowski
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Abstract
An exhaust emission control device is manufactured by sizing a housing of over a substrate and intumescent mat subsequently to heating said emission control device. The step of heating causes said intumescent mat to at least reach a temperature at which it swells. If the substrate has a washcoat layer, it may be left unfired until after it is assembled with the housing, in which case the step of heating causes the washcoat layer to sinter.
Claims20
A method of manufacturing exhaust emission control device comprising:
- sizing a housing of said emission control device over a substrate and intumescent mat subsequently to heating said emission control device, said heating causing said intumescent mat to at least reach a temperature at which said intumescent mat swells.
A method of manufacturing an exhaust emission control device comprising:
- disposing a substrate and surrounding mat in a housing, the substrate having a washcoat layer and sintering said washcoat layer subsequently to said disposing.
Dependencies are inferred from the claim text.