Abstract:
An exhaust gas treatment device, which includes an outer layer, an inner layer that is at least in part disposed within the outer layer, and a loose-fill insulation disposed in the volume between the outer layer and the inner layer, where a piece of fiber mat is disposed between the outer layer and the inner layer and forms a barrier that at least partially prevents the loss of the loose-fill insulation from the volume between the outer layer and the inner layer and a manufacturing method that includes placing a loose-fill insulation into the volume of space between an inner layer and an outer layer and positioning a piece of fiber mat between the outer layer and the inner layer to form a barrier that at least partially prevents the loss of the loose-fill insulation from the volume of space between the outer and inner layers.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zum Herstellen einer Abgasnachbehandlungseinrichtung (2), die in einem Gehäuse (4), das aus einem in Umfangsrichtung geschlossenen Mantel (5) und zwei stirnseitigen Trichtern (6) zusammengebaut ist, zumindest einen Monolithen (8) zur Abgasnachbehandlung aufweist, mit folgenden Schritten: A: Zusammenbauen und Befüllen des Gehäuses (4),wozu der wenigstens eine Monolith (8) zusammen mit wenigstens einer den wenigstens einen Monolithen (8) in der Umfangsrichtung umschließenden Lagermatte (9) in den Mantel (5) axial eingesetzt wird, undwozu die Trichter (6) jeweils mit einem komplementär zum Querschnitt des Mantels (5) geformten axialen Anschlussabschnitt (10) in den Mantel (5) eingesteckt oder auf den Mantel (5) aufgesteckt werden, derart, dass sich der jeweilige Anschlussabschnitt (10) und ein axialer Endabschnitt (25) der Lagermatte (9) axial überlappen, B: Kalibrieren des Gehäuses,wozu der Mantel (5) einschließlich der Anschlussabschnitte (10) der Trichter (6) ausgehend von einem Anfangsquerschnitt (13) auf einen Endquerschnitt (15) reduziert wird, um in der wenigstens einen Lagermatte (9) zumindest in einem sich von dem einen Anschlussabschnitt (10) zum anderen Anschlussabschnitt (10) erstreckenden Lagerbereich (16) eine vorbestimmte radiale Vorspannung zum Halten des wenigstens einen Monolithen (8) im Mantel (5) zu erzeugen.
Abstract:
Die Erfindung betrifft eine Abgasreinigungsvorrichtung für Kraftfahrzeuge mit einem in einem Gehäuse gelagerten Monolithen (2) mit einer vorderen und einer hinteren, sich jeweils quer zur Mittellängsachse (3) des Gehäuses erstreckenden Stirnseite (6), und einem zwischen Monolith (2) und einem diesen umfassenden Gehäuseabschnitt vorhandenen Spaltraum (14). Der Monolith (2) stützt sich zumindest mit einer Stirnseite (6) an einzelnen am Gehäuse fixierten Halteelementen (4) mittel- oder unmittelbar ab, welche sich etwa radial nach innen erstrecken und die Stirnseite (6) überlappen.
Abstract:
The present invention relates to a compartment for use in the modular construction of a system for the treatment of the exhaust gases of an internal combustion engine, notably for a silencer for a vehicle engine, which system comprises a series of compartments including a hollow housing body member (1) within which one or more treatments are to be performed on a gas stream passing through the compartment, at least two adjacent compartments carrying opposed circumferential outwardly directed radial flanges (7) at or adjacent the adjacent ends thereof whereby the compartments can be secured to one another, the radial flanges (7) presenting an annular face directed axially towards the housing body (1) of the compartment which face is inclined axially away from the housing body member, characterised in that the radial flange (7) is recessed substantially wholly within the radial dimensions of the adjacent portion of the housing member (1). The invention also provides an engine silencer comprising an axial series of such compartments and an engine fitted with such a silencer. The invention further provides a method for forming the recessed flange at the end of the axial housing.
Abstract:
The invention provides apparatus for treating a gas stream, notably a silencer assembly for use to treat the exhaust gasses from an internal combustion engine, which apparatus comprises a plurality of compartments within which one or more treatments are to be performed on a gas stream passing through the compartment, and through which the gas stream is to flow sequentially, characterised in that: a) at least two of said compartments each comprises a tubular body member containing or carrying a treatment element which is restrained against axial movement relative to the body member; and b) the tubular body members of the adjacent compartments are provided with radially outwardly and/or inwardly extending terminal flanges, at least some of which flanges provide a shoulder against which the opposing terminal portion of the adjacent compartment bears so as to form an axially extending structure comprising at least two compartments in axial or coaxial relationship to one another; and c) one or more clamping members which extend axially over substantially the length of the said structure and act upon the axial structure to secure the two adjacent compartments together in gas-tight engagement by an axial clamping action.
Abstract:
Device for catalytically purifying exhaust gases from a combustion engine, and process for implementing such device A porous catalytist body bears against the inner walls of a casing above a winding of a metal wire netting. The annular space between the catalyst body (1) and the casing (2) is obturated by means of an annular seal made of a non-inflammable ceramic fibre material, so that such fibre material is pressed inside and between the windings of the wire netting (3). Further, the wire netting is wound with a superposed layer of fibre material.
Abstract:
The present invention relates to an arrangement for fitting an exhaust cleaning unit (2) in an exhaust passage (1b). The arrangement comprises an annular resilient component (7) which is fitted round the exhaust cleaning unit (2) at a distance from the gasket (5). The annular resilient component (7) has a first contact portion (7a) adapted to coming into contact with a wall surface (3) of the exhaust cleaning unit (2) and a second contact portion (7b) adapted to coming into contact with a wall surface (1b) of the exhaust passage when the exhaust cleaning unit (2) is in a fitted state in the exhaust passage, and that the annular resilient component (7) has the characteristic of keeping the exhaust cleaning unit (2) in a centred position in the exhaust passage with a spring force.
Abstract:
Eine abgasführende Vorrichtung (10), insbesondere Abgasreinigungsvorrichtung, hat wenigstens einen in einem länglichen Gehäuse (12) angeordneten Einleger (14, 16), wobei das Gehäuse (12) wenigstens einen Abschnitt (26) mit verringertem Querschnitt hat, der wenigstens eine definierte Eindrückung (30) aufweist. Weiterhin werden ein Werkzeug zur Querschnittsverringerung eines Mantels (28), der das Gehäuse (12) einer abgasführenden Vorrichtung bildet, sowie ein Verfahren zur Herstellung einer abgasführenden Vorrichtung (10), die wenigstens einen in einem Gehäuse (12) angeordneten Einleger (14, 16) hat, beschrieben.
Abstract:
The present disclosure relates to an exhaust aftertreatment device (30) having a core (18) and an outer housing (40) and a mounting layer (50) positioned between the core (18) and the outer housing (40). The core has an upstream end face (20) and a downstream end face (22). The mounting layer (50) and the housing (40) have main portions (52) that extend from the upstream end face (20) to the downstream end face (22) of the core (18). The mounting layer (50) and the housing (40) also include end portions (40a, 40b) that overlap the end faces of the core (18) to retain the core within the housing (40). The end portions (50a, 50b) of the mounting layer (50) are compressed against the end faces of the core (18) by the end portions (40a, 40b) of the housing (40).
Abstract:
A separator (11) for a catalytic converter (19). The separator (11) comprises an outer wire mesh sleeve (12) and a wire mesh insert (13) located within the outer sleeve (12). Opposite ends of the sleeve (12) are joined to each other to form an annulus. The outer sleeve (12) is flattened around the insert (13) to form a separator portion (14) on the internal side wall of the annulus with the insert (13) located wholly within the separator portion (14). The separator portion (14) defines the separation provided by the separator (11).