EXHAUST SYSTEM AFTER-TREATMENT

摘要

A processor processes data including data indicative of a quantity of NOx in exhaust upstream of where ammonia is introduced into an exhaust system, data indicative of a quantity of NOx in exhaust downstream of an SCR catalyst, and data indicative of exhaust flow rate, in accordance with an algorithm to calculate an estimate of ammonia consumed by chemical reactions which are enabled by the SCR catalyst to reduce NOx to N2 and H2O.