INTEGRATED EXHAUST GAS AFTER-TREATMENT SYSTEM FOR DIESEL FUEL ENGINES

摘要

An integrated exhaust gas after-treatment system for eliminating pollutants present in exhaust gases is disclosed. The integrated exhaust gas after-treatment system includes a Diesel Oxidation Catalyst (DOC)-Diesel Particulate Filter (DPF) assembly, a Selective Catalytic Reduction (SCR), a dosing module and a reducing agent supply system. The Diesel Oxidation Catalyst (DOC)-Diesel Particulate Filter (DPF) assembly is connected to an exhaust gas manifold of an engine and includes a canister for holding a Diesel Oxidation Catalyst (DOC) and a Diesel Particulate Filter (DPF). The Diesel Particulate Filter (DPF) is disposed downstream of the Diesel Oxidation Catalyst (DOC) and is spaced there-from. The Selective Catalytic Reduction (SCR) is disposed downstream of the Diesel Oxidation Catalyst (DOC)-Diesel Particulate Filter (DPF) assembly and facilitates elimination of NOx present in the exhaust gases by reduction of the NOx.