SI Engine Catalyst Requirement for the 3-way catalyst - PDF Document
SI Engine Catalyst. Requirement for the 3-way catalyst. Catalyst efficiency %. Modern catalyst peak efficiency is better than 97%. Fig 11-57. Lean. Rich. Air/fuel ratio. 1. EGO (exhaust gas oxygen) sensor. Nerst Eq.: V o =(RT/4F) n(P’’ O2 /P’ O2 ). UEGO sensor. SAE Paper 920234.
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