Brinks Gilson & Lione
After treatment system and after treatment method for lean-burn engine
An after treatment method for a lean-burn engine is disclosed. The after treatment method is configured to control an after treatment system sequentially equipped with an ammonia production catalyst module, a selective catalytic reduction (SCR) catalyst, and a CO clean-up catalyst (CUC) on an exhaust pipe through which an exhaust gas flows and which is connected to a lean-burn engine. In the after treatment method, a rich air/fuel ratio (AFR) is controlled in multiple phases in response to detecting that conversion to the rich AFR is desired.
HYUNDAI MOTOR COMPANY KIA MOTORS CORPORATION
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ChangHo Seung Jae Chang Hwan Nahm Roh
Jung Yi Kim Joo