Exhaust gas converter body structure
a technology of body structure and exhaust gas, which is applied in the direction of engine components, mechanical equipment, machines/engines, etc., can solve the problems of inability to ensure, body structure at risk of corrosion, and difficulty in defining angular position in a conventional manner, so as to reduce the risk of corrosion and reduce the risk of installation spa
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first embodiment
[0048]Referring to the drawings, FIGS. 1A and 1B illustrate an exhaust gas converter body structure 1. FIG. 1A illustrates a not yet completely assembled condition and FIG. 1B illustrates an assembled condition.
[0049]The exhaust gas converter body structure 1 has a funnel-shaped inlet structure 3, a funnel-shaped outlet structure 4 and a main body 2 located between the inlet structure 3 and the outlet structure 4. The main body 2, the inlet structure 3 and the outlet structure 4 are each made of stainless steel sheet metal with a wall thickness of 0.5 mm.
[0050]The main body 2 has a circular cross-section, a diameter of 300 mm and a length of 450 mm. For providing an exhaust gas converter, a cylindrical substrate 50 is received in the inside of the main body 2. A cushion mat 55 made of high-temperature wool substantially fills the residual gap between the substrate 50 and the inner wall of the main body 2.
[0051]A largest inner diameter of the inlet structure 3 and the outlet structur...
second embodiment
[0061]In the exhaust gas converter body structure 1′ the main body 2′ has no protrusions in each of the first and second joint regions V1, V2, but a pair of grooves 22 oriented in the axial direction of the main body 2′ and open towards the inlet and outlet structures 3′, 4′ respectively. The grooves 22 in the first joint region V1 are hereby spaced apart in the circumferential direction of the main body 2′ by a first distance Al that is smaller than a second distance A2, by which the grooves 22 in the second joint region V2 are spaced apart in the circumferential direction of the main body 2′.
[0062]Instead of grooves, the inlet structure 3′ and the outlet structure 4′ accordingly have bolt-shaped protrusions 34, 44 in first and second joint regions V1, V2, which protrude into the inside of the exhaust gas converter body structure P. The distance between the bolt-shaped protrusions 34 at the inlet structure 3′ hereby corresponds to the first distance Al of the grooves 22 in the mai...
third embodiment
[0066]The third embodiment does not provide for the inlet structure 3″, the outlet structure 4″ and the main body 2″ to be slotted together. Instead, the end faces of these components abut against each other when being assembled.
[0067]Here too, the coupling geometries in the first and second joint regions V1, V2 are selected to enable a substantially seamless assembly only when the components have a given angular position relative to each other. In the illustrated embodiment, the inlet structure 3″ has for this purpose at the first joint region V1 a protrusion 31 oriented towards the main body 2″, while the main body 2″ has at the first joint region V1 a corresponding recess 22 directed away from the inlet structure 3″. At the second joint region V2, the main body 2″ has a protrusion 21 oriented towards the outlet structure 4″, while the outlet structure 4″ has a corresponding recess 42 directed away from main body 2″. The pairs of the protrusions 21, 31 and the recesses 22, 42 are ...
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