Abstract: A pilot-controlled coolant valve is provided that includes a pressure chamber, a pressure release chamber, a control opening, a pressure release channel, an actuator having a plunger, a control piston stroke-actuated by the plunger, a closing piston moving in the pressure chamber, and a valve seat. The pressure chamber has an in-flow and an out-flow for coolant. The control opening connects the pressure release chamber to the pressure chamber. The control piston closes the control opening during the stroke actuation by the plunger, except for a radial sealing gap between the control piston and the control opening. When the control opening is closed, the closing piston sealingly rests on the valve seat and interrupts the connection of the through-flow chamber with the in-flow. Axial end sides of the closing piston delimit a stagnation pressure chamber on one side and a through-flow chamber on the other side.

Abstract: A pilot-controlled coolant valve is provided that includes a pressure chamber, a pressure release chamber, a control opening, a pressure release channel, an actuator having a plunger, a control piston stroke-actuated by the plunger, a closing piston moving in the pressure chamber, and a valve seat. The pressure chamber has an in-flow and an out-flow for coolant. The control opening connects the pressure release chamber to the pressure chamber. The control piston closes the control opening during the stroke actuation by the plunger, except for a radial sealing gap between the control piston and the control opening. When the control opening is closed, the closing piston sealingly rests on the valve seat and interrupts the connection of the through-flow chamber with the in-flow. Axial end sides of the closing piston delimit a stagnation pressure chamber on one side and a through-flow chamber on the other side.

Abstract: A control valve for a heat management module of a motor vehicle is provided, which includes a valve disk, a valve shaft connected to the valve disk, and a shaft bearing on which the valve shaft is mounted such that it can move axially from a bearing surface. The control valve further includes a radial spring biased radially towards the shaft bearing. A receiving groove of the valve shaft includes an inhibiting section and a free-running section that are axially separated by a clamping wedge, The radial spring, in the region of the bearing surface is unable to overcome the clamping wedge and the radial spring is pressable radially by the clamping wedge such that the valve shaft is inhibited in the axial direction away from the free-running section. A control position can be held in a continuous manner without energy in a small installation space.

Abstract: A control valve for a heat management module of a motor vehicle is provided, which includes a valve disk, a valve shaft connected to the valve disk; and a shaft bearing on which the valve shaft is mounted such that it can move axially from a bearing surface. The control valve further includes a radial spring biased radially towards the shaft bearing. A receiving groove of the valve shaft includes an inhibiting section and a free-running section that are axially separated by a clamping wedge, The radial spring, in the region of the bearing surface is unable to overcome the clamping wedge and the radial spring is pressable radially by the clamping wedge such that the valve shaft is inhibited in the axial direction away from the free-running section. A control position can be held in a continuous manner without energy in a small installation space.

Abstract: A coolant pump (1) of an internal combustion engine, having a pump casing (2), in which a pump shaft (3) is rotatably supported by a water pump bearing assembly (4) and an impeller (6) connected in a rotationally fixed manner to the pump shaft (3) is associated with an intake space (7). During a rotation of the impeller (6) together with associated blades (8), a coolant as a working medium is pumped from the intake space (7), via a coolant outlet of the coolant pump (1), into a cooling system of the internal combustion engine. A dirt trap is associated as a functional module (12a) with the impeller (6) on a side facing away from the intake space (7), wherein the working medium flows into the functional module (12a) from the intake space via at least one opening (13) introduced into the impeller and emerges via a flow outlet (15a).

Abstract: A control valve for controlling a fluid flow is disclosed, in particular a coolant flow in a coolant circuit of an internal combustion engine, including a valve element which is provided with at least one opening, and which can move relative to a valve housing. With a movement of the valve element, the at least one opening can be brought into a position in which it overlaps a line cross-section defined on the valve housing side, in order to permit a flow of fluid. In addition, a sealing element is provided which is accommodated on the valve housing such that it radially surrounds the line cross-section, and a sealing surface of which can be brought into contact with a surface of the valve element, thus bridging a gap that extends between the surface of the valve element and the valve housing in a region of the sealing element.

Abstract: The invention relates to a control valve for controlling a fluid flow, in particular a coolant flow in a coolant circuit of an internal combustion engine, including a valve element which is provided with at least one opening, and which can move relative to a valve housing. With a movement of the valve element, the at least one opening can be brought into a position in which it overlaps a line cross-section defined on the valve housing side, in order to permit a flow of fluid. In addition, a sealing element is provided which is accommodated on the valve housing such that it radially surrounds the line cross-section, and a sealing surface of which can be brought into contact with a surface of the valve element, thus bridging a gap that extends between the surface of the valve element and the valve housing in a region of the sealing element.

Abstract: A thermal management valve module having separate first and second flow chambers is provided, with one or more respective inlets and outlets connected to each of the flow chambers. A first valve body is rotatably positioned in the first flow chamber, and includes a fluid pathway that connects a first and/or third inlet to a first outlet, which allows separate or mixed flows, or blocks the flow, based on the valve body position. A second valve body is rotatably positioned in the second flow chamber, and includes a fluid pathway that connects a second and/or fourth inlet to a second outlet, which allows separate or mixed flows, or blocks the flow, based on the valve body position. At least one actuator controls the positions of the first and second valve bodies.

Abstract: A coolant pump (1) of an internal combustion engine, having a pump casing (2), in which a pump shaft (3) is rotatably supported by a water pump bearing assembly (4) and an impeller (6) connected in a rotationally fixed manner to the pump shaft (3) is associated with an intake space (7). During a rotation of the impeller (6) together with associated blades (8), a coolant as a working medium is pumped from the intake space (7), via a coolant outlet of the coolant pump (1), into a cooling system of the internal combustion engine. A dirt trap is associated as a functional module (12a) with the impeller (6) on a side facing away from the intake space (7), wherein the working medium flows into the functional module (12a) from the intake space via at least one opening (13) introduced into the impeller and emerges via a flow outlet (15a).

Abstract: A thermal management valve module having separate first and second flow chambers is provided, with one or more respective inlets and outlets connected to each of the flow chambers. A first valve body is rotatably positioned in the first flow chamber, and includes a fluid pathway that connects a first and/or third inlet to a first outlet, which allows separate or mixed flows, or blocks the flow, based on the valve body position. A second valve body is rotatably positioned in the second flow chamber, and includes a fluid pathway that connects a second and/or fourth inlet to a second outlet, which allows separate or mixed flows, or blocks the flow, based on the valve body position. At least one actuator controls the positions of the first and second valve bodies.

Abstract: A regulatable coolant pump of an internal combustion engine having a pump housing in which a pump shaft with an associated impeller is rotatably mounted. The impeller conveys a coolant from an inlet connection into an outlet of the coolant pump, a volume flow of the coolant pump being adjustable by a cover that externally surrounds the impeller at least in some regions and is displaceable by a pressure medium. The cover is moved by an actuator including a solenoid in contact with a piston that is moveable into a piston pressure chamber in order to generate high pressure pulses of a pressure medium that are transmitted to a plunger chamber where they act on a plunger connected to the cover. Upon actuation of the solenoid, the cover is moved by the pressure medium acting on the plunger to an actuated end position.

Abstract: A controllable coolant pump, insertable in a coolant circuit of an internal combustion engine includes a pump housing, in which a hollow pump shaft is supported rotationally with an allocated impeller. Rotation of the impeller conveys coolant. To control a volume conveyed by the coolant pump an axially displaceable guide disk is provided, allocated to the impeller and cooperating with an actuating mechanism. The guide disk is connected to a push rod, guided in the pump shaft, and is displaceable between two end positions defined by a rear wall and a pump cover of the impeller. The actuating mechanism further includes a displacement pump integrated in the coolant pump, with a coolant flow of the displacement pump being supplied for adjustment of the guide disk via a control valve to an actuator, which includes a piston in a pressure chamber in the pump shaft connected to the push rod.

Abstract: A coolant pump for a coolant circuit of an internal combustion engine, the coolant pump having a pump housing in which is mounted a drivable shaft, to one end of which is attached an impeller-which has vanes extending into a suction chamber and is connected to a cover plate. Fluid can be drawn into the suction chamber through an intake port of the pump housing by joint rotation of the impeller and the cover plate and can be conveyed by the vanes into the pump housing. A guide plate, which is axially displaceable by an actuation unit, is disposed between the impeller and the cover plate. The guide plate has a contour corresponding to the impeller and a collar oriented toward the impeller. The coolant pump is characterized in that the guide plate has at least one opening.

Abstract: A coolant pump for a coolant circuit of an internal combustion engine, the coolant pump having a pump housingin which is mounted a drivable shaft, to one end of which is attached an impeller-which has vanes extending into a suction chamber and is connected to a cover plate. Fluid can be drawn into the suction chamber through an intake port of the pump housing by joint rotation of the impeller and the cover plate and can be conveyed by the vanes into the pump housing. A guide plate, which is axially displaceable by an actuation unit, is disposed between the impeller and the cover plate. The guide plate has a contour corresponding to the impeller and a collar oriented toward the impeller. The coolant pump is characterized in that the guide plate has at least one opening.

Abstract: A controlled coolant pump of an internal combustion engine with a pump housing in which a pump shaft is rotatably supported and which has a belt wheel on one end side. A coolant is forced by a pump shaft impeller as a volume flow via a suction connection into a spiral channel of the coolant pump. The volume flow is influenced by a guide plate device that interacts with the impeller and has a guide plate that is continuously adjustable in the axial direction between two end positions and also includes an actuation unit that interacts with the pump shaft. The two-part pump shaft of the coolant pump includes modules that can be inserted into the pump housing assembled into one structural unit via an interface. The actuation unit allocated directly to a module includes a displacement pump with pump outlet valve and a guide plate device.

Abstract: A regulatable coolant pump for a cooling circuit of an internal combustion engine having a pump housing with a hollow pump shaft with an impeller. Rotation of the impeller moves coolant. An axially displaceable guide disk on the impeller controls a pump displacement volume and works via an actuating mechanism. The guide disk is rigidly connected to a connecting rod guided in the pump shaft. The actuating mechanism includes a displacement pump integrated in the coolant pump, and an actuator formed as a piston-cylinder unit with a pressure chamber in the pump housing that has a circular annular shape positioned to coincide with an outer region of the guide disk. A piston that works together with the guide disk is guided in linearly displaceable fashion in the pressure chamber. A coolant flow of the displacement pump controlled by a control valve charges the pressure chamber to displace the piston.

Abstract: A coolant pump for an engine with a controllable coolant flow, including a pump housing in which a hollow pump shaft is rotatably supported with an associated impeller. A volume flow of the pump is influenced by a guide plate allocated to the impeller. The guide plate is rotationally locked to a push rod guided in the pump shaft and continuously variable between two axial end positions via an actuator, provided as a radial piston pump integrated within the coolant pump that is adjustable by a cam and includes, for generating pressure, a piston that is enclosed on the outside by the cam and guided in the radial direction in a bore of the pump shaft and allocated to a pressure space. The pressure space is connected indirectly to a high pressure space in which a high pressure piston applying a force on the push rod is displaceably guided.

Abstract: A controllable coolant pump, insertable in a coolant circuit of an internal combustion engine includes a pump housing, in which a hollow pump shaft is supported rotationally with an allocated impeller. Rotation of the impeller conveys coolant. To control a volume conveyed by the coolant pump an axially displaceable guide disk is provided, allocated to the impeller and cooperating with an actuating mechanism. The guide disk is connected to a push rod, guided in the pump shaft, and is displaceable between two end positions defined by a rear wall and a pump cover of the impeller. The actuating mechanism further includes a displacement pump integrated in the coolant pump, with a coolant flow of the displacement pump being supplied for adjustment of the guide disk via a control valve to an actuator, which includes a piston in a pressure chamber in the pump shaft connected to the push rod.

Abstract: A regulatable coolant pump for a cooling circuit of an internal combustion engine having a pump housing with a hollow pump shaft with an impeller. Rotation of the impeller moves coolant. An axially displaceable guide disk on the impeller controls a pump displacement volume and works via an actuating mechanism. The guide disk is rigidly connected to a connecting rod guided in the pump shaft. The actuating mechanism includes a displacement pump integrated in the coolant pump, and an actuator formed as a piston-cylinder unit with a pressure chamber in the pump housing that has a circular annular shape positioned to coincide with an outer region of the guide disk. A piston that works together with the guide disk is guided in linearly displaceable fashion in the pressure chamber. A coolant flow of the displacement pump controlled by a control valve charges the pressure chamber to displace the piston.

Abstract: A device (1) for regulating a coolant flow in a cooling system of an internal combustion engine (2) with a valve arrangement (3) that includes a rotary disk valve (4) for switching at least one cooling circuit (5, 6) and/or a bypass circuit (7), as well as a coolant pump (8) that is constructed as an impeller pump and is connected on the suction side to the valve arrangement (3). The coolant pump (8) has an axial adjustable guide plate (11) on an inside between two end stops (9, 10) for closing and releasing a pump outlet (12). The guide plate (11) for the axial adjustment is indirectly coupleable by a lead screw thread (13) to a drive shaft (14) of the rotary disk valve (4). A cooling system for an internal combustion engine (2) with such a device (1) is also provided.