| 摘要 |
<p>This device (2, 102) for purifying exhaust gas, comprising an upstream pipe (4) in which there is housed a first member (6) for purifying exhaust gas, a downstream pipe (8) in which there is housed a second member (10) for purifying exhaust gas, a mixing volume (12) and an injection device (20) for injecting a nitrogen oxide reducing product; is characterised in that the mixing volume comprises a first deflector member capable of channelling the exhaust gas flow such that it flows through the jet of nitrogen oxide reducing product substantially perpendicularly to the direction of injection, then substantially perpendicularly to a second deflector member (36, 56), the second deflector member being shaped to form two swirling flows of a mixture of exhaust gas and nitrogen oxide reducing product; and in that the device further comprises an element (54, 58) for protecting the second member (10) for purifying exhaust gas.</p> |
