DOC-DPF-SCR COMBINED EXHAUST GAS TREATMENT Russian patent published in 2021 - IPC F01N3/35 

FIELD: automotive industry.

SUBSTANCE: single exhaust gas post-processing unit is proposed, combining DOC-DPF-SCR, containing a housing (1), a DOC-DPF unit (5), two SCR units (2), one or two urea mixers (4) and an exhaust pipe (3), in which the body (1) has a square cross-section, and the DOC-DPF unit (5) and the exhaust pipe (3) are respectively located in two diagonal corners of this square, both the SCR units (2) and the urea mixer (4) are located symmetrically about the diagonal line, on which the DOC-DPF unit (5) and the exhaust pipe (3) are located, the exhaust gas in the DOC-DPF unit (5) enters the urea mixers (4) after exhaust, and the mixed exhaust gas in the urea mixer (4) is discharged into the SCR units (2), and the exhaust gas in the SCR units (2) is discharged into the exhaust pipe (3).

EFFECT: single post-processing device combining the DOC-DPF-SCR can facilitate further exchange between different functional blocks, left or right housing position (1) and flexible and varied positioning of gas inlet and outlet modes, realizing a single consistent installation on different completed vehicles.

9 cl, 8 dwg