Metering valve assembly and method for operating a metering...

Details Metering valve assembly and method for operating a metering... Metering valve assembly and method for operating a metering...

2011-05-10

2011-05-10

Denion, Thomas E. (Department: 3748)

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

C060S274000, C060S295000, C060S301000, C060S303000

Reexamination Certificate

active

07937932

ABSTRACT:
A metering valve assembly having a metering valve for metering an aqueous urea solution for posttreatment of exhaust gases from internal combustion engines, the liquid being capable of being fed in a feeding direction to the metering valve and a mixing chamber being provided, in which the liquid is miscible with a gas in a gas flow. The metering valve is evacuatable contrary to the feeding direction.

REFERENCES:
patent: 5884475 (1999-03-01), Hofmann et al.
patent: 6063350 (2000-05-01), Tarabulski et al.
patent: 44 32 577 (1996-03-01), None
patent: 101 50 518 (2003-05-01), None
patent: 102 54 981 (2004-06-01), None
patent: WO 96/08639 (1996-03-01), None
patent: WO03033111 (2003-04-01), None

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