Development of Automotive Engine Control System

Japanese

Chinese

Research project: Deterioration diagnosis and identification technique for automotive exhaust gas catalyst

Automotive exhaust gas catalyst is an essential system which acts to scavenge the exhaust gas by changing the nitrogen oxide (NOx), carbon monoxide (CO) and hydrocarbon (HO) that produced by the engine to the harmless carbon dioxide, water, nitrogen and oxygen. The purification ability of the exhaust gas catalyst will naturally decrease when deteriorated. However, even if the catalyst is deteriorated, the driving quality will not be affected. In fact, it is not easy to evaluate the deterioration level as its correlation with the mileage is low and it is also influenced by the driving style.
Hence, we are doing research on the deterioration diagnosis and identification technique to observe the deterioration of the exhaust gas catalyst.