But during fuel control process the Air-Fuel-Ratio (AFR) shows an excursion,resulting in a low conversion efficiency of TWC because of the inexact control whichmaybe on account of the engine consistency and aging.
英
美
- 但是在發(fā)動(dòng)機燃油控制過(guò)程中,由于發(fā)動(dòng)機一致性以及由發(fā)動(dòng)機老化帶來(lái)的燃油控制精確性問(wèn)題,空燃比偏離化學(xué)計量比,使TWC轉化率下降,導致排放大量增加。
