| 摘要 |
The invention relates to a device for injecting a fluid (2), in particular into the exhaust-gas section of an internal combustion engine, having a reservoir (4) for storing the fluid (2) to be injected; an injection and metering module (10); a pump (8) which is configured for conveying fluid (2) during operation out of the reservoir (4) to the injection and metering module (10); and a return line (16) which makes an outflow of fluid (2) out of the injection and metering module (10) possible, wherein a switchable throttling valve (14) which is suitable for pumping fluid out of the injection and metering module (10) is arranged in the return line (16). |
