| 摘要 |
The invention relates to a metering module (1), in particular for an exhaust gas after-treatment device (2) of a motor vehicle, comprising a metering valve (3) for injecting a liquid medium. The metering valve (3) is associated with a feed channel (5) for the medium to be injected, and at least one fresh air channel (6) opens into the feed channel (5), a non-return valve (7) being arranged in the fresh air channel. The fresh air channel (6) opens into a suction inlet (16) of a jet pump (12) arranged in the feed channel (5). The invention further relates to an exhaust gas after-treatment device. |
