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Cummins Magazine - 2014 Summer Vol 79

Cummins

Cummins Inside Engine Story NOxPMPM NO/NO2 HC, CODOC(Diesel Oxidation Catalysis) NOx [g/kW-hr] Tier 1 / Stage I(1996) Tier 2 / Stage II(2001) Tier 3 / Stage IIIA(2005) Tier 4 Interim / Stage IIIB(2011) Tier 4 Final / Stage IV(2014) PM [g/kW-hr]

22 + 23 Tier 4 (Aftertreatment) (Combustion)EGR VGT(Variable Geometry Turbocharger) DPF Diesel Particulate FilterNOx SCRSelective Catalytic Reduction QSB6.7 Tier 4 Final DOC+SCR 5 Tier 1/Tier 2 Tier 4 Final