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US 11,242,793 B2Granted
Muffler assembly unit
AssigneePurem GmbH
InventorsIan Barret, Laurent Cazeneuve
Life of this patent
Estimating the term…
Abstract
A muffler assembly unit for an exhaust system of an internal combustion engine, especially in a vehicle, includes a muffler (42) with a muffler housing (10). The muffler housing (10) is elongated along a longitudinal axis of the housing. A housing jacket (40) encloses the muffler housing (10). At least one air guiding bulge (34) is provided on the housing jacket (40).
Claims18
A muffler assembly unit for an exhaust system of an internal combustion engine, the muffler assembly unit comprising:
- a muffler comprising a muffler housing that is elongated along a housing longitudinal axis;
- a housing jacket enclosing the muffler housing;
- and
- at least one air guiding bulge provided on the housing jacket,
- wherein:
- the housing jacket has at least one rib support area and is supported on an outer side of the muffler housing in the at least one rib support area without being fixed there to the muffler housing;
- and
- the housing jacket is permanently connected to the muffler housing by welding only at a plurality of connection areas positioned in the same length area in a direction of the housing longitudinal axis in a connecting length area in a longitudinal center in the direction of the housing longitudinal axis of the muffler housing, and wherein the housing jacket is not permanently connected to the muffler housing starting from the connecting length area in the direction towards axial end areas of the housing jacket for providing housing jacket sections of substantially similar length extending from the connecting length area to both axial end areas of the housing jacket that are not fixed to the muffler housing.
5 more elements
An assembly unit for an exhaust system of an internal combustion engine, the assembly unit comprising:
- an exhaust housing elongated along a longitudinal axis;
- a housing jacket enclosing said exhaust housing, said housing jacket having an air guiding bulge relative to said exhaust housing;
- a plurality of connection areas fixing said housing jacket to said exhaust housing, each of said plurality of connection areas being positioned at a central longitudinal position of said exhaust housing, said housing jacket not being longitudinally fixed to said exhaust housing at longitudinal positions spaced from said central longitudinal position.
Dependencies are inferred from the claim text.