| 摘要 |
<p>The invention relates to an exhaust line (8) of an internal combustion engine (6), comprising: - a pipe (12) receiving exhaust gases, and - a particulate filter (14) impregnated: with a first catalytic coating forming a reduction catalyst for nitrogen oxides (NOx), and with a second catalytic coating forming a first oxidation catalyst for carbon monoxide (CO) and hydrocarbons (HC), characterized in that: - the line (8) comprises an additional filter (30), housed in the pipe (12) downstream of the particulate filter (14) and impregnated with a catalytic coating forming a second reduction catalyst for nitrogen oxides (NOx), and - the additional filter (30) has an internal structure such that the additional filter (30) creates a pressure drop which is less than the pressure drop created by the same volume of particulate filter (14) impregnated with the same quantity of the same catalytic coating.</p> |
