Study on THC-OSC Degradation Trend to Screening the Deadline Catalyst for Requirements of EOBD

EOBD is a complex system that should be achieved by multi-party co-operation of automobile factories,catalytic converters suppliers and manufacturers of ECU.The most important task that the catalyst suppliers should prepare deadline catalyst to meet the requirements of EOBD's catalyst or converter.This paper summarized a lot of practice and put forward through researching the relationship between THC(vehicle emissions of hydrocarbons) and OSC(the catalyst oxygen storage capacity) to make the aged catalyst.The task for the preparation of deadline catalyst can be quickly and efficiently completed.The method has been used in the S11 models vehicle that can be completed the screening of critical catalyst.