Abstract: A pump assembly includes an electric motor with a printed circuit board carrying a controller, a pump driven by the electric motor, a housing surrounding the printed circuit board, and a plug connector which is fixed to an outside of the housing by a flange. The plug connector covers an opening of the housing and includes contacts directly electrically contacting the printed circuit board and passing through the opening of the housing. The connector includes a pressure compensator including a sintered filter to vent the housing.

Abstract: A damping element (1) has a multi-start thread on its circumferential surface (4). The damping element (1) can engage in a recess in a first body (12). To this end, the damping element (1) has a thread portion on its circumferential surface and the recess (13) in the first body (12) has in its inner lateral surface at least one mating thread portion which corresponds to the thread portion of the damping element (1). Through engagement of the thread in the mating thread, the damping element can be screwed together with the first body (12). By means of the thread, the damping element (1) can be fastened to the first body (12) and separated therefrom again with little effort. A fastening element (23) can fasten the damping element (1) to a second body in order to fasten the first (12) and the second bodies to one another in a vibration-damped manner.

Abstract: A pump assembly includes an electric motor with a printed circuit board carrying a controller, a pump driven by the electric motor, a housing surrounding the printed circuit board, and a connector attached on the outside of the housing by a flange. The connector covers an opening of the housing and includes contacts for direct electrical contact with the printed circuit board which passes through the opening of the housing. The connector includes a pressure compensator in the flange.

Abstract: Axial sliding bearing arrangement for a pump impeller (8) of a radial pump (1) with a first, rotating friction surface (22) pointing in an axial direction (A), a second, non-rotating friction surface (23) facing the first, rotating friction surface (22), wherein the second, non-rotating friction surface (23) is allocated to a swivel head body (20), wherein the swivel head body (20) is axially supported via an axial support surface (24), and the swivel head body (20) is radially supported in a resiliently yielding manner at radial support surfaces (25) by means of first spring means (31).

Abstract: The invention relates to a shaft bearing having a seal arrangement to prevent steam leakages that can occur in the event of temperature fluctuations or pressure fluctuations between a liquid medium on the one side and a gaseous medium on the other side of the compact bearing, wherein, between a primary radial seal and a rotation bearing portion, a lubrication space surrounding a shaft circumference is arranged that receives a volume of lubricating grease that has a higher viscosity than a lubricating oil and a coolant; and a volume compensator for compensating a temperature-dependent volume fluctuation is provided that comprises a compressible material, and is arranged vertically in interaction with the volume of the lubricating oil and/or the volume of the lubricating grease.

Abstract: An electric coolant pump (1) conveys cooling fluid in order to cool a combustion engine of a vehicle. The electric coolant pump (1) has a pump impeller (2) for accelerating the coolant to be conveyed, a rotor shaft (3) on which the pump impeller (2) is fixed, an electric motor (6), having a stator (8) and a rotor (7), for driving the rotor shaft (3). A control circuit (13) controls the electric motor (6). A pump housing (10) accommodates at least the control circuit (13) and the electric motor (6). The coolant to be conveyed is able to flow through the pump housing (10). The coolant to be conveyed thereby flows around the stator (8), the rotor (6) and the control circuit (13).

Abstract: Pump module, particularly for a temperature management system, and temperature management system comprising the pump module, and motor vehicle comprising the pump module or the temperature management system The invention relates to a pump module, in particular a liquid fluid pump module for a temperature management system (100), e.g. of an electric battery-driven motor vehicle or a hybrid motor vehicle, comprising: at least one electrically driven fluid pump unit (2) which is configured and provided to supply fluid to be pumped to at least one actuatable fluid valve means (3); a control device (ECU) for actuating at least one drive motor (7) of the fluid pump unit (2), wherein the control unit (ECU) also comprises at least one electrically actuatable operating solenoid (31) for a pilot valve (20), which solenoid is configured and provided to hydraulically operate the fluid valve means (3) by means of the pilot valve (20) during normal use of the pump module (1).

Abstract: A toothing for a gerotor pump comprises a plurality of outer teeth (10) at a gerotor inner element (1) and a plurality of inner teeth (20) greater by one at a gerotor outer element (2), wherein a centre (M1) of the gerotor inner element (1) is offset from a centre (M2) of the gerotor outer element (2) by an eccentricity (e), the outer teeth (10) thereby meshing with the inner teeth (20). A contour of the outer teeth (10) at the gerotor inner element (1) is essentially defined by a curve of a single ellipse from a tooth tip (11) continuously via tooth flanks (13) to a transition radius (14) towards a tooth space or a tooth root (12); wherein the principal axis of the ellipse is arranged radially to the gerotor inner element (1) and the centre of the ellipse determines a radius (Rmin) at the gerotor inner element (1) which corresponds to the maximum meshing depth of the gerotor outer element (2) between the outer teeth (10) at the meshing.

Abstract: The invention relates to a vane pump for conveying liquids, in particular viscous oils, which vane pump includes: a rotor having sliding slots in which movable vanes are held and can be countersunk in relation to a rotor radius (r); a pump housing including a pump chamber, which encloses the rotor; and an inlet and an outlet, which open into the pump chamber at at least one end face of the rotor; radial elevations protruding, with respect to the sliding slots, over the circumference of the rotor, which elevations form a rotor radius (r) on either side of the vanes that can be countersunk, and radial pockets being recessed, relative to the rotor radius (r), between the radial elevations. Within the radial elevations, recesses are formed on the at least one end face of the rotor at which the inlet and the outlet open, which recesses provide rotating anticipatory control geometry for reducing pressure spikes in the vane cells.

Abstract: The invention relates to a shaft seal (1) which is configured to seal a shaft (2) between a coolant side (8) and a dry side (9) in a water pump. The shaft seal (1) is particularly characterized in that a compressible volume compensator (7) for compensating a temperature-dependent volume fluctuation is provided, which is vertically disposed and interacting with the volume of a barrier fluid (6).

Abstract: A sliding bearing having a sealing arrangement for water pumps, configured to radially mount and seal a shaft in a housing between a wet side and a dry side. The sliding bearing and the sealing arrangement include a sliding bearing bushing made of a sintering material for radial mounting of the shaft, and a dry-side shaft seal arranged between the sliding bearing bushing and the dry side. A wet-side shaft seal is arranged between the wet side and the sliding bearing bushing and a lubricant reservoir with a substrate, made of a non-sintered material, which is porous in at least some sections, is arranged at least between the wet-side shaft seal and the sliding bearing bushing. The lubricant reservoir includes, in pores of the substrate, a lubricant insoluble in water. A volume of the lubricant reservoir and a volume of a lubricant filling take up a total volume of spaces between the wet-side shaft seal and the dry-side shaft seal.

Abstract: A pump device for a cooling circuit of an internal combustion engine of a commercial or motor vehicle includes two electric pumps in parallel, each of which includes a switchable backflow valve in a suction line, so that the electric pumps can be operated selectively individually or in parallel.

Abstract: The invention relates to a pump impeller for a radial pump with a carrier plate comprising an intake side and a rear side situated opposite the intake side, a blading being provided on the intake side for conveying a medium to be pumped, characterized in that, on the rear side of the carrier plate, at least one flow profile is situated which is configured and formed to reduce at least a difference between a pressure-induced balance of forces on the carrier plate and on a cover plate in the case of a rotation of the pump impeller in a rotational direction (DR).

Abstract: An electrical coolant pump, preferably for use as an additional water pump in a vehicle, is characterised in that a radial bearing of the shaft, which is arranged between the pump impeller and the rotor, is provided by means of a radial sintered sliding bearing having a defined porosity lubricated by coolant, and a shaft seal is arranged between the radial sliding bearing and the motor chamber, wherein at least one coolant flow channel with a predetermined depth is provided in the sintered sliding bearing in an axial direction extending from the end of the sintered sliding bearing on the side of the pump chamber.

Abstract: An electrical screw spindle coolant pump is suitable for conveying a coolant circuit or other corrosive, liquid media. The electrical screw spindle coolant pump has a spindle housing with a spindle chamber and an axially adjacent motor housing. The motor housing has a motor chamber, in which a dry-running electric motor is arranged separated from the flow current. The motor housing has a thermal transition portion through which the flow current flows. The thermal transition portion is arranged between the motor chamber and a component boundary of the motor housing to the spindle housing.

Abstract: A compact bearing is produced by a sliding bearing and has a sealing arrangement for water pumps. The bearing includes a sliding bearing bushing that includes an inner sliding surface and a radial recess having an axial sliding surface, a shaft collar, and a wet-side shaft seal arranged between the wet side and the sliding bearing bushing. A dry-side shaft seal is arranged between the sliding bearing bushing and the dry side. A lubricant reservoir with a substrate, which is porous in at least some sections, is arranged between the wet-side shaft seal and the sliding bearing bushing. The lubricant reservoir includes, in pores of the substrate, a lubricant insoluble in water, and a volume of the lubricant reservoir and a volume of a lubricant filling a total volume of spaces between the wet-side shaft seal and the dry-side shaft seal.

Abstract: A hybrid-driven dual pump for conveying a coolant for a combustion engine, is proposed. The dual pump comprises: a first pump assembly with a first pump impeller, a first spiral housing and a first pump shaft driven via a mechanical drive connection by a combustion engine; a second pump assembly with a second pump impeller, a second spiral housing, a second pump shaft and an electric drive; a joint pump housing enclosing the first pump assembly and the second pump assembly with a joint pump inlet and a joint pump outlet; and a flap arranged freely pivotably between an outlet of the first spiral housing and an outlet of the second spiral housing such that a direct flow connection between the first spiral housing and the second spiral housing is blocked.

Abstract: An electric coolant pump is used as an auxiliary water pump in a vehicle. The pump includes radial mounting of the shaft (4) is provided by means of a coolant-lubricated radial sliding bearing (41) arranged between the pump impeller (2) and the rotor (32). A dry-running electric motor (3) with a radially inner stator (31) and a radially outer rotor (32) is accommodated in a motor chamber (13) separated from the pump chamber (10). A shaft seal (5) is between the radial sliding bearing (41) and the motor chamber (13). The rotor (32) is bell-shaped with an inner surface facing the shaft seal (5) and being fixed to the shaft seal (5) to axially overlap with the shaft (4). The motor chamber (13) has an opening to the atmosphere, which is closed by a liquid-tight pressure equalization membrane (6) that is permeable to vapor.

Abstract: In an electrical coolant pump, preferably for use as an additional water pump in a vehicle, a radial bearing of the shaft is provided by means of a radial slide bearing lubricated with coolant on the separating element which is disposed between the pump impeller and the rotor. A dry-running electric motor has a radially inner stator and a radially outer rotor is accommodated within the motor chamber. A shaft seal is disposed between the radial slide bearing and the motor chamber. The rotor is formed in a cup shape, the inner surface of which faces the shaft seal and is fixed to the shaft in an axially overlapping manner. The motor chamber has an opening to the atmosphere which is closed by a liquid-tight and vapor-permeable pressure equalizing membrane. The separating element is configured as a support flange with a separating portion and an axial projection into the motor chamber, to which the stator is attached.

Abstract: An electrically driven gerotor pump has a gerotor which comprises a stationary outer gerotor element with an inner toothing that is axially delimited by two chamber walls, wherein each chamber-forming foot section of the inner toothing is paired with a pressure valve which is connected to the outlet. The gerotor also comprises an inner gerotor element with an outer toothing which is guided in the outer gerotor element in a circumferential manner on an eccentric section of the shaft and is mounted in, a rotatable manner so as to mesh with the inner toothing.