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METHOD FOR TESTING A PARTICULATE FILTER, IN PARTICULAR FOR EXHAUST GASES FROM AN OTTO ENGINE
METHOD FOR TESTING A PARTICULATE FILTER, IN PARTICULAR FOR EXHAUST GASES FROM AN OTTO ENGINE
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机译:测试特殊过滤器(特别是来自OTTO发动机的排气)的方法
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摘要
In a four-way catalyst for use in connection with an Otto engine, the function of a particulate filter is combined with that of a three-way catalyst (3) (having in particular an oxygen reservoir (4)). In order to check the capacity for separating particles, according to the invention the catalytic function of the three-way catalysts is checked. The extent of damage to the particulate filter (3) can be quantified in particular from a curve pattern after a change in the exhaust gas composition from rich to lean or vice-versa upstream of the particulate filter and the reaction downstream of the particulate filter.
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