Exhaust line of an internal engine, especially diesel engine from utility vehicles such as trucks or buses, with an integrated device for treating an exhaust gas an attenuate noise

摘要

The invention relates to an exhaust line of an internal combustion engine, in particular a diesel engine of a commercial vehicle such as a truck or bus, which is characterized by the following features: a front silencer (2) and a main silencer (3) in the exhaust line (1), a device for separating and oxidizing Very fine particles from the exhaust gas, consisting of at least one oxidation catalyst (4) that significantly increases the NO2 content of the nitrogen oxide in the exhaust gas and at least one filterless particle separator and oxidizer (5) downstream thereof, the main silencer (3) is externally through a front end wall (6 ), a rear end wall (7) and a peripheral wall (8) delimited and divided on the inside by a wall (9) into an inflow chamber (10) and an outflow chamber (11), which is at least one particle separator and oxidizer ((5) in the main silencer (3), there one end with the inflow chamber (10), the other end with the outflow chamber (11) Unique, built-in, the main silencer (3) is designed without a tailpipe and has one or more on its end wall (7) on the exhaust gas outlet side and / or the end region of its peripheral outer wall (8) on the exhaust gas outlet side or a region (14) of its end wall (6) on the exhaust gas inlet side (6) For a direct tailpipe-free outlet of the cleaned exhaust gas from the outflow chamber (11) into the atmosphere, appropriately designed outlet openings (15), the main silencer (3) is designed for a partial silencing volume and the silencing volume missing in the main silencer (3) is in the front silencer (2) realized, which is installed at a distance from the main silencer (3) as close as possible to the engine in the exhaust pipe (1), the at least one oxidation catalytic converter (4) is either installed in the front silencer (2) or before or after it in the exhaust pipe (1). IMAGE