US 10,900,406 B2Granted

Method for the production of an exhaust-gas routing device for a motor vehicle

AssigneeFaurecia Emissions Control Technologies, Germany GmbH

InventorsToni Zipfel, Manfred Stiglmair, Claudia Herbers

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Abstract

A method for production of an exhaust-gas routing device that has a housing, an elongated substrate, and a compensating element, includes the following steps. At least one parameter of the substrate and/or of the compensating element is determined A target parameter, which describes a variable linked to a target geometry of the housing, is determined based on the measured parameter of the substrate and/or of the compensating element. The substrate and the compensating element are arranged in the housing, and the housing is deformed with an overpressure factor which is determined on the basis of at least one previous deformation of a previously manufactured device. The housing is measured after the deformation, and the thus-established values are compared with the target parameter. An overpressure factor for the deformation of a subsequently manufactured device is adapted if a deviation from the target parameter is detected upon measuring which lies above a defined threshold value.

Claims10

Dependent claims

A method for production of an exhaust-gas routing device for an internal combustion engine, wherein the exhaust-gas routing device includes a housing, an elongated substrate and a compensating element, the method comprising the following steps:

a) determining at least one parameter of the elongated substrate and/or of the compensating element,
b) determining a target parameter, which describes a variable linked to a target geometry of the housing, based on a measured parameter of the elongated substrate and/or of the compensating element,
c) arranging the elongated substrate and the compensating element in the housing,
d) deforming the housing with an overpressure factor which is determined on a basis of at least one previous deformation of a previously manufactured exhaust-gas routing device,
e) measuring the housing after deformation, and comparing established values with the target parameter, and
f) adapting an overpressure factor for a deformation of a subsequently manufactured exhaust-gas routing device if a deviation from the target parameter is detected upon measuring which lies above a defined threshold value.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/371,472Filed 1 Apr 2019
Priority: DE 10 2018 107 8363 Apr 2018
Published: US 2019/0301345 A13 Oct 2019
Granted: 26 Jan 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

F01N 13/10
Other arrangements or adaptations of exhaust conduits: of exhaust manifolds
F01N 13/1888
Construction facilitating manufacture, assembly, or disassembly: the housing of the assembly consisting of two or more parts, e.g. two half-shells
F02B 37/02
Engines characterised by provision of pumps driven at least for part of the time by exhaust: gas passages between engine outlet and pump drive,…
B23P 2700/03
Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the…