Patent application number | Description | Published |
20120111291 | DEVICE FOR REGULATING A COOLANT FLOW AND COOLING SYSTEM | 05-10-2012 |
20120291723 | ACTUATING MECHANISM FOR A REGULATED COOLANT PUMP - 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. | 11-22-2012 |
20120291724 | ACTUATING MECHANISM TO REGULATE A CONTROLLABLE COOLANT PUMP - 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. | 11-22-2012 |
20130243571 | CONTROLLABLE COOLANT PUMP WITH A MULTI-PART MODULAR CONSTRUCTION - 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. | 09-19-2013 |
20140003913 | INFINITELY ADJUSTABLE COOLANT PUMP | 01-02-2014 |
20140037432 | CONTROLLABLE COOLANT PUMP - 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. | 02-06-2014 |
20140334949 | LABYRINTHINE RADIAL PISTON-HYDRAULIC VARIABLE WATERPUMP ACTUATION SYSTEM - 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. | 11-13-2014 |
20150027572 | THERMAL MANAGEMENT VALVE MODULE WITH ISOLATED FLOW CHAMBERS - 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. | 01-29-2015 |