| 摘要 |
<p>The invention relates to a delivery device (1) for delivering a liquid additive out of a tank (2) to an exhaust-gas treatment device (3), at least having a delivery duct (4) with an overall volume (20) and a pump (5) arranged in the delivery duct (4), wherein the delivery duct (4) has, downstream of the pump (5) in a delivery direction (6), a flexible wall portion (7) which, with an outer side (29) situated opposite the delivery duct (4), bears against a stop (9) when the pressure in the delivery duct (4) lies in a predefined operating pressure range (11), wherein on the outer side (29) there is provided a spring element (8) which is designed to deform the flexible wall portion (7) such that the overall volume (20) is reduced in size when the pressure in the delivery duct (4) is lower than a threshold pressure (31). Furthermore, the invention also relates to a method for compensating the formation of ice in a delivery device.</p> |
