Oxidation Of Doc - SSANGYONG Actyon Sports II 2012.01 Manual

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1) Oxidation of DOC

The DOC oxidizes HC and CO of the exhaust gas in the two-way catalytic converter at 180℃ or
more, and performs best at the temperature between 400 and 500℃. The front EGT sensor
detects whether the DOC can burn (oxidize) the post-injected fuel or not, and sends the signal to
the ECU to maintain the DOC operating temperature between 300 and 500℃. The DOC reduces
CO and HC of the exhaust gas by redox reaction and also reduces small amount of PM.
1. Oxygen adheres to the catalyst materials: Less than 180℃
2. CO and HC are oxidized by the catalyst materials: More than 180℃