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Maximization of the fuel economy of the lean burn SI engine strongly depends on precise air-fuel ratio control. A great challenge associated with the air-fuel ratio feedback control is the large… Continue Reading
Transient air-fuel ratio control for lean burn engines is critical to achieve desired fuel economy and meet federal emission regulations. Unlike conventional SI engines, lean burn engines are no… Continue Reading
The three-way catalytic converter performance degrades as it ages over time due to many phenomenon such as catalyst poisoning, sintering or physical damage of the instrument. To reduce the emission… Continue Reading
A statistical classification technique based on the fraction of time the catalyst gain is very close to zero is used as a diagnostic metric for on-board monitoring of an automotive catalyst.… Continue Reading