| 摘要 |
FIELD: engines and pumps.SUBSTANCE: invention relates to conveying unit for conveying reducing agent from a tank to an exhaust gas treatment device. Conveying unit comprises a pump with a drive unit and a pump chamber unit, wherein pump chamber unit, at least in part, limits a pump chamber. Drive unit and pump chamber unit are connected to each other with possibility of disconnection, and pump chamber comprises a main compartment and extending from main compartment a branch channel to which adjoin one intake valve and one outlet valve.EFFECT: invention improves pump protection against freezing of reducing agent.9 cl, 19 dwg |
