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US 2019/0093528 A1Published application
Method and apparatus to enable package space reduction in a vehicle exhaust system
AssigneeFaurecia Emissions Control Technologies, USA, LLC
InventorsJames Egan, Thorsten Keesser, Dieter Fahrlaender
Life of this patent
Estimating the term…
Abstract
A vehicle exhaust system includes a hot end having one or more hot end exhaust components that treat emissions generated by an engine and a cold end that includes at least one cold end component that attenuates noise. At least one acoustic volume is in parallel or serial to the hot end to further attenuate noise.
Claims20
A vehicle exhaust system comprising:
- a hot end including one or more hot end exhaust components that treat emissions generated by an engine;
- a cold end that includes at least one cold end component that attenuates noise;
- and
- at least one acoustic volume in parallel or serial to the hot end to attenuate noise.
1 more element
A vehicle exhaust system comprising:
- a hot end including one or more hot end exhaust components that treat emissions generated by an engine;
- a cold end that includes at least one cold end component that attenuates noise, wherein the at least one cold end component comprises at least one of a valve, resonance free pipe, or active noise cancellation;
- and
- at least one acoustic volume in the hot end to attenuate noise, wherein the at least one acoustic volume comprises a parallel or serial volume connected to the hot end downstream of the engine.
1 more element
A method of providing a reduced package space exhaust system comprising:
- providing a hot end including one or more hot end exhaust components that treat emissions generated by an engine;
- providing a cold end that includes at least one cold end component that attenuates noise wherein the at least one cold end component comprises at least one of a valve, resonance free pipe, or active noise cancellation;
- and
- providing at least one acoustic volume parallel or serial to the hot end to attenuate noise in combination with the at least one cold end component to eliminate one or more cold end mufflers and/or resonators and reduce an overall length of the cold end.
1 more element
Dependencies are inferred from the claim text.