Combination exhaust gas post treatment/muffler device in the...

Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Waste gas purifier

Reexamination Certificate

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Details

C060S274000, C060S299000, C181S212000

Reexamination Certificate

active

10822543

ABSTRACT:
A combination exhaust gas post treatment/muffler device in the exhaust gas section of an internal combustion engine is provided. The exhaust gas post treatment within the muffler, which forms sulfuric acid, takes place in at least one exhaust gas post treatment/muffler module, and only that housing thereof through which flows exhaust gas that is to be cleaned is produced from ferritic or austenitic stainless steel, thus making it possible to produce the outer walls of the muffler, as well as any inner element thereof, such as a transverse wall, that is disposed externally of the exhaust gas post treatment/muffler module of unalloyed sheet steel that is coated with aluminum or some other material.

REFERENCES:
patent: 5063736 (1991-11-01), Hough et al.
patent: 5285640 (1994-02-01), Olivo
patent: 5426269 (1995-06-01), Wagner et al.
patent: 5514348 (1996-05-01), Bayer et al.
patent: 6722124 (2004-04-01), Pawson et al.
patent: 6729127 (2004-05-01), Woerner et al.
patent: 0 787 816 (1999-09-01), None
patent: 1 262 641 (2002-12-01), None
patent: 2 176 239 (1988-12-01), None

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