Exhaust system
AssigneeEberspächer Exhaust Technology GmbH & Co. KG
InventorsFelix Neumann, Viktor Koch
Life of this patent
Estimating the term…
Abstract
An exhaust system (1) for an internal combustion engine, in particular of a motor vehicle, has at least one exhaust tract (2), which has at least one exhaust pipe (3) which conducts exhaust gas, and has at least one active silencer (5). The active silencer (5) has a silencer housing (6) and at least one electro-acoustic converter (7) which is arranged in the silencer housing (6) and at least one connection pipe (8), which connects the silencer housing (6) fluidically to the exhaust pipe (3). The thermal loading of the converter (7) is reduced with a sound propagation path (9) formed for the propagation of airborne noise in the connection pipe (8) being impermeable to thermal radiation (16) emanating from the exhaust gas in the exhaust pipe (3).
Claims20
An exhaust system for an internal combustion engine of a motor vehicle, the exhaust system comprising:
- an exhaust tract comprising at least one exhaust pipe which conducts exhaust gas;
- an active silencer comprising a silencer housing and an electro-acoustic converter arranged in the silencer housing and a connection pipe which connects the silencer housing fluidically to the exhaust pipe;
- a cooler section arranged between said silencer housing and said exhaust pipe, wherein at least one internal cooling rib is arranged in the cooler section, said cooler section having a cooler wall, the at least one internal cooling rib projecting inwardly into a cross section of the cooler section from said cooler wall, wherein said at least one internal cooling rib is exposed to the exhaust gas and said at least one internal cooling rib transfers heat from an interior of said cooler section to said cooler wall, said cooler section comprising a tubular body, said tubular body being separate from said connection pipe, said tubular body being directly connected to said connection pipe.
An exhaust system comprising:
- an exhaust pipe which conducts exhaust gas;
- an active silencer comprising a silencer housing and an electro-acoustic converter arranged in said silencer housing;
- a connection pipe which connects said silencer housing fluidically to said exhaust pipe, said connection pipe having an outer connection pipe surface;
- a cooler section comprising an inner cooler wall and a cooling rib, said cooling rib projecting inwardly into a cross section of said cooler section from said inner cooler wall, wherein said cooling rib is integrally connected to said inner cooler wall to form a one-piece heat transfer structure, said inner cooler wall engaging said outer connection pipe surface, said one-piece heat transfer structure being arranged between said silencer housing and said exhaust pipe.
Dependencies are inferred from the claim text.