Method for emptying a device for providing a liquid additive

    公开(公告)号:US10240595B2

    公开(公告)日:2019-03-26

    申请号:US14650400

    申请日:2013-11-15

    Abstract: A method for operating a device for providing a liquid additive includes feeding the liquid additive along a feeding path. The feeding path has at least one first portion in which a peristaltic pump is disposed. The pump, in particular, has a reversible feeding direction and can be damaged by deposits discharged from the liquid additive. The feeding path also has at least one second portion in which a component susceptible to freezing is disposed. At first liquid additive is fed along the feeding path of the device. Subsequently, the feeding of the liquid additive is stopped. The feeding path is then partially emptied in such a way that liquid additive remains in the at least one first portion of the feeding path while the at least one second portion is emptied. A device for providing a liquid additive is also provided.

    Method for operating a device for providing a liquid additive

    公开(公告)号:US10718244B2

    公开(公告)日:2020-07-21

    申请号:US14650357

    申请日:2013-11-08

    Abstract: A method for operating a device for providing a liquid additive includes feeding the liquid additive along a feeding path having at least one first portion which forms a heat conducting section from a heater of the device into a tank for the liquid additive. The feeding path also has at least one second portion in which a component susceptible to freezing is disposed. The liquid additive is first fed along the feeding path of the device. Subsequently, the feeding of liquid additive is stopped. Then, partial draining of the feeding path takes place, with liquid additive remaining in the at least one first portion of the feeding path while the at least one second portion is being drained. A device for providing a liquid additive is also provided.

    Pump for conveying a liquid, in particular an exhaust-gas cleaning additive

    公开(公告)号:US10294937B2

    公开(公告)日:2019-05-21

    申请号:US15124065

    申请日:2015-03-18

    Abstract: A pump for conveying liquid includes a pump housing having an inlet, an outlet, an inner circumferential surface and a geometric axis. An eccentric in the housing is rotatable about the geometric axis relative to the housing. A deformable element is disposed between the inner circumferential housing surface and the eccentric. A delivery duct from the inlet to the outlet is formed by the deformable element and the inner circumferential housing surface. The deformable element is pressed against the housing by the eccentric in sections so that a displaceable seal of the duct and a closed pump volume in the duct are formed and are displaceable to convey the liquid along the duct from the inlet to the outlet by rotation of the eccentric. A receptacle, accommodating an edge region of the deformable element, is formed by the inner circumferential housing surface and a counter bracket.

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