Individual cylinder fuel control method
作者： Raymond C. Turin , Sanjeev M. Naik
DOI:
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摘要: An improved individual cylinder fuel control method based on sampled readings of a single oxygen sensor responsive to the combined exhaust gas flow several engine cylinders. A model-based observer is used reproduce imbalances different cylinders and proportional-plus-integral controller for their elimination. Both are formulated in terms periodic system. The input signal preprocessed such that it reflects at each point time deviation from current A/F-ratio mean value calculated over two cycles. Therefore, transient operating conditions do not harm reconstruction dramatically. algorithm features process/controller synchronization table lookup mechanism automatically adjust mapping between estimates corresponding if unstable operation detected.
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