| 摘要 |
An exhaust system mixer (12) mixes a reactant with an exhaust gas flow (3) and includes a pipe section (13), which borders a flow cross section (16), through which the exhaust gas flows (3), in the circumferential direction (17), and which extends in an axial direction (18) from a first axial side (19) to a second axial side (20), and a plurality of guide blades (14, 15), which project from the pipe section (13) at least on one of the axial sides (19, 20), so as to protrude into the flow cross section (16). Guide blades (14, 15) on an axial side, which follow each other in the circumferential direction (17), include a first guide blade group (21), arranged on the respective axial side (19, 20), axially offset in relation to the guide blades (15) of the second guide blade group (22), to reduce a pressure drop. |
| 主权项 |
1. A mixer for an exhaust system of an internal combustion engine for mixing a reactant with an exhaust gas flow, the mixer comprising:
a pipe section, which borders a flow cross section through which the exhaust gas flow can flow in a circumferential direction, extending in an axial direction from a first axial side of the pipe section to a second axial side of the pipe section; a plurality of guide blades, which project from the pipe section at least on one of the axial sides such that the plurality of guide blades protrude into the flow cross section, wherein: the plurality of guide blades are divided into at least a first guide blade group and a second guide blade group, which are arranged offset in the circumferential direction; the guide blades of the first guide blade group are arranged axially offset in relation to the guide blades of the second guide blade group; and the first guide blade group and the second guide blade group follow each other in the circumferential direction, each of the first guide blade group and the second guide blade group extending only over a part of a circumference of the pipe section such that the first guide blade group and the second guide blade group do not overlap each other in the axial direction. |
