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US 4,064,963 AGranted
Exhaust for internal-combustion engine
AssigneeVereinigte Metallwerke Ranshofen-Berndorf Aktiengesellschaft
InventorsPeter Kaan, Gunther Rudolf Beke
Life of this patent
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Abstract
The exhaust of an internal-combustion engine comprises a muffler of malleable aluminum or aluminum alloy with a heat-resistant inner layer extending at least along a wall portion confronting an inlet for the hot exhaust gases. The heat-resistant layer may be a refractory coating, e.g. alumina, beryllia or zirconia particles in a matrix of Teflon or silicone rubber, or a metallic liner separated from the outer wall by an airspace possibly occupied by rock wool or the like.
Claims10
An exhaust for an internal-combustion engine, comprising:
- a muffler of a corrosion-resistant malleable metallic material consisting essentially of aluminum, said muffler having a body with a generally cylindrical peripheral wall and a pair of end caps adjoining said wall, at least said end caps being provided with a protective inner layer of heat-resistant material;
- two transverse partitions dividing the interior of said body into two outer compartments bounded by said end caps and a central compartment between said partitions;
- a pair of nonaligned, substantially axially extending tubular elements each traversing one of said partitions for establishing communication between said central compartment and a respective outer compartment;
- a pair of inlet pipes extending substantially radially through said wall into said outer compartments for admitting hot exhaust gases into said muffler, said pipes terminating in bent extremities open toward said end caps whereby the incoming exhaust gases impinge upon said protective layer;
- and
- outlet means in said wall between said partitions for discharging the exhaust gases from said muffler.
3 more elements
Dependencies are inferred from the claim text.