Power plants – Internal combustion engine with treatment or handling of... – By means producing a chemical reaction of a component of the...
Reexamination Certificate
2006-05-30
2006-05-30
Tran, Binh Q. (Department: 3748)
Power plants
Internal combustion engine with treatment or handling of...
By means producing a chemical reaction of a component of the...
C060S274000, C060S286000, C123S481000, C123S493000
Reexamination Certificate
active
07051516
ABSTRACT:
The invention relates to a method for controlling a temperature of a catalyst system (14, 16) located in an exhaust duct (12) of an internal combustion engine (10) in a motor vehicle. Said system comprises at least one primary catalyst (16), in particular an NOxstorage catalyst and optionally one or more pre-catalysts (14). According to the invention, at one point during operation, at which the torque desired by the driver is less than an overrun torque of the vehicle (overrun phase τs), an overrun shut-off can be suppressed by supplying the internal combustion engine (10) with an air-fuel ratio (λ) that is less than or equal to 1.1.
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patent: 6173569 (2001-01-01), Kusada et al.
patent: 6240721 (2001-06-01), Ito et al.
patent: 6321530 (2001-11-01), Hoshi et al.
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Pott Ekkehard
Zillmer Michael
Norris McLaughlin & Marcus PA
Tran Binh Q.
Volkswagen AG
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