12. A method of claim 11 for detecting deterioration of a three-way catalytic converter for an engine which provides an O2 sensor as said downstream air-fuel ratio sensor, further comprising the steps of: a limit value determining step for determining an upper limit and a lower limit in ac...
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Figure 4. Control chart of the bypass valve group [23]. In diesel Tier III mode, the existence of the vaporizer/mixer and SCR reactor causes a thermal delay between the exhaust gas manifold and the turbocharger [38]. Additionally, the degree of thermal delay mainly depends on the size ...