Development of a New Engine and Aftertreatment System to Meet Off-Road Stage V without Exhaust Gas Recirculation

Authors

Dr. Tae-Joong Wang, Rin Hyun, In-Hyuk Im, Dr. Duk-Sang Kim, Tae-Kuk Kim, Bong-Ki Song, Woong-Gun Lee, Tae-Sub Kim,
DOOSAN INFRACORE Co., Ltd., Incheon, Korea

Summary

With the new modular concept of aftertreatment system, DOOSAN INFRACORE is introducing its medium heavy-duty Diesel engines (i.e. DL06 and DL08) that comply with off-road Stage V emissions regulation. Compared to the preceding Stage IV / Tier 4 Final versions presented in the 22^nd Aachen Colloquium Automobile and Engine Technology 2013, the advancement of DOOSAN INFRACORE's high-efficiency SCR technology has enabled the elimination of EGR system. This Stage V 'No EGR' architecture has achieved around 4% reduction of total fluid consumption (i.e. Diesel + AdBlue) than the Stage IV 'With EGR' version. In addition, the package size of the new Stage V aftertreatment system was
considerably saved by substituting AdBlue mixer pipe with advanced compact mixer.

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