Device for treatment of exhaust of an internal combustion...

Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Mixture is exhaust from internal-combustion engine

Reexamination Certificate

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Details

C423S213200, C423S235000, C423S239100, C422S168000, C060S274000, C060S286000, C060S295000, C060S303000

Reexamination Certificate

active

07449162

ABSTRACT:
A method and a device for treatment of the exhaust of an internal combustion engine in which a fluid is used as an auxiliary agent for the treatment; a partial chemical conversion of the auxiliary agent is at least occasionally stimulated in order to produce a substance that reduces the freezing point of the fluid when the temperature of the fluid falls below a critical value.

REFERENCES:
patent: 5884475 (1999-03-01), Hofmann et al.
patent: 6442932 (2002-09-01), Hofmann et al.
patent: 2001/0053342 (2001-12-01), Marko et al.
patent: 2004/0025498 (2004-02-01), Lambert et al.
patent: 2004/0115110 (2004-06-01), Ripper et al.
patent: 2005/0011183 (2005-01-01), Ripper et al.
patent: 2006/0147362 (2006-07-01), Nissinen et al.
patent: 2007/0048204 (2007-03-01), Mital
patent: 2007/0157602 (2007-07-01), Gschwind
patent: 2007/0163238 (2007-07-01), Gerlach
patent: 44 32 577 (1996-03-01), None
patent: 199 35 920 (2001-03-01), None
patent: WO 00/30733 (2000-06-01), None
patent: WO 02/057603 (2002-07-01), None
The English abstract of DE 199 35 920 A1 published Mar. 15, 2001.

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