Method for operating a three-way catalyst of an internal combustion engine
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United States of America Patent
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-
Apr 22, 2003
Grant Date -
N/A
app pub date -
Nov 30, 2001
filing date -
Dec 31, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An internal combustion engine (1), especially for a motor vehicle, is described, which has a three-way catalytic converter (12') and a storage catalytic converter (12') which can be loaded with and unloaded of nitrogen oxides. A diagnosis of the storage catalytic converter (12') is carried out by a control apparatus (18) below a temperature at which the three-way catalytic converter (12') does not yet operate.
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