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US 8,439,156 B1Granted
Muffler with controlled pressure release
AssigneeFaurecia Emissions Control Technologies
InventorKwin Abram
Life of this patent
Estimating the term…
Abstract
A plastic muffler is configured to provide a controlled mode for releasing exhaust gas pressure during an over-pressurization event. The plastic muffler has a plastic casing that includes at least one pressure relief feature. The pressure relief feature allows exhaust gas to escape from the plastic casing when internal exhaust gas pressure exceeds a predetermined pressure level.
Claims26
A muffler for a vehicle exhaust system comprising:
- a plastic body defining an internal cavity having at least one inlet and at least one outlet such that an exhaust gas flow path is provided between said inlet and said outlet;
- and
- at least one pressure relief feature formed on said plastic body that allows exhaust gas to leak out of said plastic body when exhaust gas pressure within said internal cavity exceeds a predetermined pressure level.
A method of controlling pressure release for a plastic muffler comprising the steps of:
- providing a plastic body with an internal cavity that defines an exhaust gas flow path from an inlet to an outlet;
- forming at least one pressure relief feature on the plastic body;
- and leaking exhaust gas through the at least one pressure relief feature when exhaust gas pressure exceeds a predetermined pressure level.
A muffler for a vehicle exhaust system comprising:
- a plastic body defining an internal cavity having at least one inlet and at least one outlet such that an exhaust gas flow path is provided between said inlet and said outlet, and wherein said plastic body includes an opening formed within a bottom portion of said plastic body;
- an insert mounted within said opening, said insert having a higher melting temperature than said plastic body;
- and
- at least one drain hole provided within said insert that allows condensate to drain out of said plastic body.
1 more element
Dependencies are inferred from the claim text.