Method for determining current oxygen loading of a 3-way catalytic converter of a lambda-controlled internal combustion engine
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United States of America Patent
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Feb 15, 2011
Grant Date -
Dec 25, 2008
app pub date -
Dec 6, 2004
filing date -
Feb 27, 2004
priority date (Note) -
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Abstract
The invention relates to a method for determining the actual oxygen load of a 3-path catalyst of a lambda-controlled internal combustion engine, whereby a value for the actual oxygen load is calculated from the signal of a pre-catalyst lambda probe and the measured air mass flow rate by integration over time, whereby the post-catalyst lambda probe is initialized when the signal is interrupted.
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