Air-gap-insulated exhaust manifold

Details Air-gap-insulated exhaust manifold Air-gap-insulated exhaust manifold

2005-04-27

2008-10-14

Denion, Thomas (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

Common receiver having inlets from plural cylinder

C060S324000

Reexamination Certificate

active

07434390

ABSTRACT:
The present invention relates to an air-gap-insulated exhaust manifold (1) of an internal combustion engine, in particular in a motor vehicle, having a collecting line (2) that extends in a longitudinal direction (3), an outlet opening (4) oriented in the longitudinal direction (3), multiple inlet openings (5) oriented across the longitudinal direction (3) and a flange (6) that extends in the longitudinal direction (3) and includes the inlet openings (5), wherein an inside pipe (11) is situated in an outside pipe (10), forming an air-gap insulation, and whereby a gas-carrying outside pipe section (13) is provided in the area of at least one of the inlet openings (5) and leads from the respective inlet opening (5) to an assigned inside pipe inlet (14) which is at a distance from the flange (6). The inside pipe (11) is attached to the outside pipe (10) only in an attachment area (15).

REFERENCES:
patent: 5768890 (1998-06-01), Bekkering et al.
patent: 6247552 (2001-06-01), Kovar et al.
patent: 6343417 (2002-02-01), Bonny et al.
patent: 44 44 760 (1996-06-01), None
patent: 1 229 221 (2002-08-01), None
patent: 1 329 607 (2003-07-01), None

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