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    KÜHLMITTELPUMPE FÜR EINE VERBRENNUNGSKRAFTMASCHINE
    2.
    发明公开
    KÜHLMITTELPUMPE FÜR EINE VERBRENNUNGSKRAFTMASCHINE 审中-公开

    公开(公告)号：EP3371462A1

    公开(公告)日：2018-09-12

    申请号：EP16784874.6

    申请日：2016-10-19

    Applicant: Pierburg GmbH

    Inventor： ROTHGANG, Stefan ,  CRAMER, Sebastian ,  BENRA, Michael-Thomas ,  BURGER, Andreas ,  ZIELBERG, Stephan

    IPC: F04D15/00

    CPC classification number: F04D15/0038

    Abstract: Coolant pumps for internal combustion engines having a drive shaft (18), a coolant pump impeller (20) which is connected at least fixedly on the drive shaft (18) so as to rotate with it and via which coolant can be conveyed, an outer housing (10), in which a conveying channel (12) of the coolant pump is configured, and an adjustable regulating slide (58), via which a throughflow cross section of an annular gap (62) between an outlet (64) of the coolant pump impeller (20) and the surrounding conveying channel (12) can be regulated, are known. In order to obtain guidance which is as exact and low-friction as possible for reducing necessary actuating forces for the regulating slide, it is proposed that the regulating slide (58) has an inner hollow-cylindrical circumferential wall (66) and an outer hollow-cylindrical circumferential wall (60) which can be displaced into the annular gap (62), which circumferential walls (66, 60) are connected to one another via a bottom (68) and extend from the bottom (68) in the direction of the coolant pump impeller (20), wherein the inner hollow-cylindrical circumferential wall (66) is mounted on a machined outer surface (72) of a cylindrical section (74) of a housing part (26) of the coolant pump.

    KÜHLMITTELPUMPE FÜR EINE VERBRENNUNGSKRAFTMASCHINE
    3.
    发明公开
    KÜHLMITTELPUMPE FÜR EINE VERBRENNUNGSKRAFTMASCHINE 审中-公开

    公开(公告)号：EP3371430A1

    公开(公告)日：2018-09-12

    申请号：EP16785430.6

    申请日：2016-10-19

    Applicant: Pierburg GmbH

    Inventor： ZIELBERG, Stephan ,  ROTHGANG, Stefan ,  CRAMER, Sebastian ,  BENRA, Michael-Thomas ,  BURGER, Andreas ,  FERNER, Hendrik

    IPC: F01P7/16 ,  F04D15/00

    CPC classification number: F01P7/162 ,  F01P7/16 ,  F01P2007/146 ,  F04D15/0038 ,  F04D29/086 ,  F05D2270/64

    Abstract: Coolant pumps for internal combustion engines are known, comprising a drive shaft (18), a coolant pump impeller (20) which is rigidly arranged on the drive shaft (18) at least in a rotationally fixed manner and by means of which coolant can be pumped, and an adjustable control slide (58), by means of which a flow cross-section of an annular gap (62) between an outlet (64) of the coolant pump impeller (20) and the surrounding pump channel (12) can be regulated. In order to achieve a secure seal of the two opposing pressure chambers (92, 94) in particular during a purely hydraulic adjustment, the control slide (58) has an inner hollow cylindrical circumferential wall (84), on the radial inner face of which a radial groove (86) is formed, a seal ring (88) being arranged in said radial groove, and the control slide also has an outer hollow cylindrical circumferential wall (60), on the radial outer face of which a radial groove is formed (74), a seal ring (76) being arranged in said radial groove. The two circumferential walls (60, 84) are connected together via a base (80).

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