Abstract:
A mixer for an emissions cleaning module is provided. The mixer having an elongate body configured for location within a flowhood and a downstream conduit of an emissions cleaning module. A plurality of apertures are included in the mixer and configured to permit passage of exhaust gas therethrough, to promote mixing, in use of an injected additive and a flow of exhaust gas. An emissions cleaning module including such a mixer is also described.
Abstract:
A mixer for an emissions cleaning module is provided. The mixer having an elongate body configured for location within a flowhood and a downstream conduit of an emissions cleaning module. A plurality of apertures are included in the mixer and configured to permit passage of exhaust gas therethrough, to promote mixing, in use of an injected additive and a flow of exhaust gas. An emissions cleaning module including such a mixer is also described.
Abstract:
A manufacturing method of a sub-muffler includes a rectangular tubular body shaping step (S3), a preliminary shaping step (S5), and a diameter reduction shaping step (S7). In the rectangular tubular body shaping step (S3), a plate material is bent and a rectangular tubular body having a rectangular shape in cross section is thereby formed. In the preliminary shaping step (S5), ends of the rectangular tubular body are preliminarily formed and the end parts of the tubular body are thereby formed so that its cross-sectional shape becomes a circular shape. In the diameter reduction shaping step (S7), the diameters of the ends of the rectangular tubular body are reduced.
Abstract:
Die Erfindung betrifft Mischvorrichtung (6) zum Einbringen eines Reduktionsmittels in einen Abgasstrom (2) einer Brennkraftmaschine, mit einem Gehäuse (8) mit einer Abgaseinlassöffnung (4) zum Einführen des Abgasstroms (2) und einer Abgasauslassöffnung (34) zum Ausführen des Abgasstroms (2), einem in Strömungsrichtung des Abgasstroms (2) der Abgaseinlassöffnung (4) und der Abgasauslassöffnung zwischengeordneten Außenrohr (8), einer radial zwischen dem Außenrohr (8) und einem von diesem in Axialrichtung gesehen wenigstens teilweise umschlossenen Innenrohr (10) ausgebildete und mit der Abgaseinlassöffnung (4) verbundene Ringkammer (22), in welcher wenigstens ein Teil des Abgasstroms (2) als in Umfangsrichtung gerichtete Umfangsströmung (28) strömt, wenigstens einer Öffnung (25a bis 25d) in dem Innenrohr (10), durch welche wenigstens ein Teil des in die Ringkammer (22) eingeströmten Abgasstroms (2) in das Innere des Innenrohrs (10) einströmen kann, in Bezug zum Innenrohr (10) und zum Außenrohr (8) zusätzliche oder separate Leitmitteln (26a bis 26d) für den Abgasstrom, Einspritzmitteln (24), durch welche Reduktionsmittel in das Innere des Innenrohrs (10) eingespritzt wird. Die Erfindung sieht vor, dass die Leitmittel wenigstens eine am Außenumfang des Innenrohrs (10) angeordnete und in Bezug auf die Umfangsströmung (28) in der Ringkammer (22) der wenigstens einen Öffnung (25a bis 25d) nachgeordnete Leitschaufel (26a bis 26d) beinhalten, die in die Ringkammer (22) derart hinein ragt, dass sie die Umfangsströmung (28) nach radial innen und in die wenigstens eine Öffnung (25a bis 25d) hinein leitet. Hierdurch wird eine bessere Durchmischung des Reduktionsmittels mit dem Abgasstrom erzielt.
Abstract:
Die Erfindung betrifft eine Abgasbehandlungseinrichtung (1) für eine Abgasanlage einer Brennkraftmaschine, mit einem Gehäuse (2), das einen Mantel (4) und endseitig zumindest einen Boden (7) aufweist. Eine vereinfachte Variantenbildung ergibt sich, wenn zumindest ein solcher Boden (7) als kugelförmige oder kugelsegmentförmige Haube (8) ausgestaltet ist, die Haube (8) eine Anschlussöffnung (9) aufweist, und an die Haube (8) im Bereich der Anschlussöffnung (9) ein Anschlussstutzen (10, 11) angebaut ist.
Abstract:
A muffler assembly includes first and second muffler components (20,30) that are each formed as a single piece. The first muffler component (20) includes a first outlet pipe portion (22) , a first bypass pipe mount portion (26) , and a first resonator shell portion (24) . The second muffler component (30) includes a second output pipe portion (32) , a second bypass pipe mount portion (36) , and a second resonator shell portion (34) . The first and second muffler components (20,30) are positioned in an overlapping relationship such that respective portions are aligned with each other to form an outlet pipe (40) , a bypass pipe mount (44) , and a resonator shell (42) . A noise attenuation valve assembly (60) is also installed within the first and second muffler components (20,30) . The bypass pipe mount is positioned at a non-perpendicular orientation relative to the outlet pipe such that a bypass pipe having a straight end mount can be received within the bypass pipe mount to bypass the noise attenuation valve assembly.
Abstract:
An exhaust manifold collecting part connection structure, comprising the collecting tube (4) for the branched tubes (2) connected to an exhaust tube (14) of the exhaust manifold (1) of a multi-cylinder internal combustion engine through a spherical joint (17), the collecting tube (4) formed in a double tube further comprising a collecting tube body (5) and an outer tube (6) covering the outer periphery thereof, wherein an annular space part (C) is formed therebetween, and the collecting tube body (5), outer tube (6), and the tubular fitted part (8f) of the flange (8) of the spherical joint (7) fitted to the outer tube (6) are connected integrally with each other by welding (W), whereby the number of production processes and the number of parts can be reduced to reduce the cost of the exhaust manifold collecting part connection structure.
Abstract:
In manufacturing an exhaust pipe of two-passage construction, a metallic plate having a first end and a second end respectively elongated in a longitudinal direction of the exhaust pipe is prepared. The metallic plate is bent into a substantially S shape in cross section. It has a diametrically extending central partition plate (6) and a substantially semicircular peripheral wall (7) on each lateral side of said partition plate (6) in such a manner that a groove (14) of substantially V shape in cross section having a substantially closed end on a radially inner side and an open end on a radially outer side is formed at each diametrically outer portion of the partition plate (6). A discharge leading tip (13) is provided so as to elongate along the groove (14) in a manner to extend substantially radially outward from the closed end. A welding arc is generated between the discharge leading tip (13) and a welding gun (15) disposed on a side of the open end such that the substantially closed end and the discharge leading tip (13) are welded together.