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公开(公告)号：US20190242346A1
公开(公告)日：2019-08-08
申请号：US16266374
申请日：2019-02-04
申请人： Robert Bosch GmbH
IPC分类号： F02M51/06
CPC分类号： F02M51/0625
摘要： A valve for metering fluids, for fuel injection valves for internal combustion engines, includes an electromagnetic actuator in a housing and a valve needle actuatable by an armature of the actuator, which actuates a valve closing body interacting with a valve-seat surface to form a sealing seat. The armature is movably guided on the valve needle. A stop element connected to the valve needle limits, with an actuation of the valve needle, a relative motion between the armature and the valve needle. The stop element includes at least one elastically deformable part and one stop piece, the elastically deformable part being shaped as a sleeve, and the stop element being configured so that the armature, upon the limitation of the relative motion between the armature and the valve needle, initially contacts the elastically deformable part and impacts the stop piece after a corresponding elastic deformation of the elastically deformable part.
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公开(公告)号：US10242785B2
公开(公告)日：2019-03-26
申请号：US15036683
申请日：2014-11-11
申请人： Robert Bosch GmbH
发明人： Stefan Cerny , Ralf Kromer
IPC分类号： H01F7/16 , F16K1/14 , F01N3/20 , F16K31/06 , F02M61/10 , H01F7/08 , F02M51/06 , F02M61/16 , F02M63/00
摘要： A valve for metering fluid has an electromagnet for actuating a valve needle controlling a metering opening. The electromagnet generates, upon current flow, a magnetic flux that proceeds via an outer pole, a hollow-cylindrical inner pole, an armature displaceable on an armature guidance region embodied on the valve needle, and a working air gap delimited by the armature and inner pole. Disposed fixedly on the valve needle is an entraining element that penetrates axially displaceably into an entraining element guidance region embodied in the inner pole and has a radial stop shoulder for the armature which delimits a take-up travel or pre-stroke travel. The entraining element is extended into an additional inner pole having a pole surface formed by the stop shoulder, and is embodied magnetically conductively and a magnetic flux between the armature and valve needle is suppressed by way of a magnetically nonconductive material.
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公开(公告)号：US20180180003A1
公开(公告)日：2018-06-28
申请号：US15739277
申请日：2016-06-23
申请人： Robert Bosch GmbH
发明人： Andreas Schaad , Joerg Abel , Juergen Maier , Martin Buehner , Matthias Boee , Olaf Schoenrock , Philipp Rogler , Stefan Cerny
IPC分类号： F02M51/06
CPC分类号： F02M51/0653 , F02M51/066 , F02M51/0685 , F02M2200/26 , F02M2200/304 , F02M2200/308 , F02M2200/9023 , F02M2200/9053 , F16K31/0662 , F16K31/0665 , F16K31/0686
摘要： A fluid metering valve includes a valve-seat surface; a valve closing element that interacts with the valve-seat surface in order to form a sealing seat; an electromagnetic actuator; a valve needle used for operating the valve-closing element; an armature that is guided on the valve needle and is used for opening or closing the sealing seat; at least one stop that is disposed on, and stationary relative to, the valve needle and that restricts a movement of the armature on the valve needle; and at least one damping element that is configured to provide a damping during the opening or closing of the sealing seat, has a volume that is able to be filled with a fluid medium, is configured such that a fluid medium can be exchanged between the volume and an environment of the damping element, and is configured for volume changes of the volume in order to enable the damping.
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公开(公告)号：US11053900B2
公开(公告)日：2021-07-06
申请号：US15752522
申请日：2016-07-11
申请人： Robert Bosch GmbH
发明人： Andreas Schaad , Joerg Abel , Juergen Maier , Martin Buehner , Matthias Boee , Olaf Schoenrock , Philipp Rogler , Stefan Cerny
摘要： A valve for metering a fluid, for example, a fuel injection valve for an internal combustion engine, includes a valve-seat face, an electromagnetic actuator including an armature that includes a through-flow channel that opens with an outlet opening at an end face of the armature, a valve needle on which the armature is movably supported and that is operable using the armature, a valve-closing member that is actuatable by the valve needle and that cooperates with the valve-seat face to form a sealing seat, and a stop element that is mounted fixedly on the valve needle and that interacts with the at least one outlet opening of the at least one through-flow channel such that throttling takes place with respect to the least one through-flow channel when the armature is located with its end face at the stop element.
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公开(公告)号：US10738748B2
公开(公告)日：2020-08-11
申请号：US16311354
申请日：2017-06-21
申请人： Robert Bosch GmbH
发明人： Nico Herrmann , Andreas Schaad , Joerg Abel , Juergen Maier , Martin Buehner , Matthias Boee , Olaf Schoenrock , Philipp Rogler , Stefan Cerny
摘要： A fluid metering valve includes a valve needle that is actuatable by an electromagnetic actuator that includes an armature guided on and along a longitudinal axis of the valve needle with a movement limited by a stop surface on the valve needle. A projection of an edge of the stop surface extends into a projection plane, perpendicular to the longitudinal axis and at which the armature and stop surface are in contact temporarily during operation, through an opening of a conduit of the armature, dividing the opening into an inner surface on one side of the projection and an outer surface on the other side of the projection. A fluid exchange between inside and outside of an area between the stop surface and armature is via a path through the inner surface, conduit, and outer surface when the armature is in contact with the stop surface at the projection plane.
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公开(公告)号：US10519909B2
公开(公告)日：2019-12-31
申请号：US15739277
申请日：2016-06-23
申请人： Robert Bosch GmbH
发明人： Andreas Schaad , Joerg Abel , Juergen Maier , Martin Buehner , Matthias Boee , Olaf Schoenrock , Philipp Rogler , Stefan Cerny
摘要： A fluid metering valve includes a valve-seat surface; a valve closing element that interacts with the valve-seat surface in order to form a sealing seat; an electromagnetic actuator; a valve needle used for operating the valve-closing element; an armature that is guided on the valve needle and is used for opening or closing the sealing seat; at least one stop that is disposed on, and stationary relative to, the valve needle and that restricts a movement of the armature on the valve needle; and at least one damping element that is configured to provide a damping during the opening or closing of the sealing seat, has a volume that is able to be filled with a fluid medium, is configured such that a fluid medium can be exchanged between the volume and an environment of the damping element, and is configured for volume changes of the volume in order to enable the damping.
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公开(公告)号：US10378497B2
公开(公告)日：2019-08-13
申请号：US15741835
申请日：2016-07-05
申请人： Robert Bosch GmbH
发明人： Andreas Schaad , Joerg Abel , Juergen Maier , Martin Buehner , Matthias Boee , Olaf Schoenrock , Philipp Rogler , Stefan Cerny
摘要： A fluid metering valve includes a housing, an electromagnetic actuator that includes an armature that is separated from an inner wall of the housing by an annular gap, a throttle element connected to the armature or the housing and arranged in the annular gap to dampen a movement of the armature that is opposite to an opening direction, a valve seat surface, a valve closing body that cooperates with the valve seat surface to form a sealing seat, and a valve needle that (a) is actuatable by the actuator, (b) is arranged for actuating the valve closing body (c) extends through a borehole in the armature so that the armature is movably guidable on the valve needle, and (d) includes a stop arranged such that, during an actuation, the armature strikes against the stop in the opening direction to thereby open the sealing seat.
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公开(公告)号：US20190234358A1
公开(公告)日：2019-08-01
申请号：US16311354
申请日：2017-06-21
申请人： Robert Bosch GmbH
发明人： Nico Herrmann , Andreas Schaad , Joerg Abel , Juergen Maier , Martin Buehner , Matthias Boee , Olaf Schoenrock , Philipp Rogler , Stefan Cerny
摘要： A fluid metering valve includes a valve needle that is actuatable by an electromagnetic actuator that includes an armature guided on and along a longitudinal axis of the valve needle with a movement limited by a stop surface on the valve needle. A projection of an edge of the stop surface extends into a projection plane, perpendicular to the longitudinal axis and at which the armature and stop surface are in contact temporarily during operation, through an opening of a conduit of the armature, dividing the opening into an inner surface on one side of the projection and an outer surface on the other side of the projection. A fluid exchange between inside and outside of an area between the stop surface and armature is via a path through the inner surface, conduit, and outer surface when the armature is in contact with the stop surface at the projection plane.
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公开(公告)号：US20190219014A1
公开(公告)日：2019-07-18
申请号：US16304732
申请日：2017-06-21
申请人： Robert Bosch GmbH
发明人： Andreas Schaad , Joerg Abel , Juergen Maier , Martin Buehner , Matthias Boee , Olaf Schoenrock , Philipp Rogler , Stefan Cerny
摘要： A valve for metering a fluid. An armature of the electromagnetic actuator is movable along a longitudinal axis of a valve needle, the movement of the armature relative to the valve needle being limited by a stop surface on the valve needle. The armature has a passage channel. The stop surface is on a stop element. The stop element and the armature are such that during operation there always remains an intermediate space, adjoining the valve needle, between the stop element and an end face of the armature facing the stop element. The stop surface lies, in a contact region, on the end surface of the armature facing the stop element when the armature and the stop surface come into contact during operation, the contact region being situated between the intermediate space and an opening of the passage channel when the armature and the stop surface come into contact.
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公开(公告)号：US20190010906A1
公开(公告)日：2019-01-10
申请号：US15752522
申请日：2016-07-11
申请人： Robert Bosch GmbH
发明人： Andreas Schaad , Joerg Abel , Juergen Maier , Martin Buehner , Matthias Boee , Olaf Schoenrock , Philipp Rogler , Stefan Cerny
摘要： A valve for metering a fluid, for example, a fuel injection valve for an internal combustion engine, includes a valve-seat face, an electromagnetic actuator including an armature that includes a through-flow channel that opens with an outlet opening at an end face of the armature, a valve needle on which the armature is movably supported and that is operable using the armature, a valve-closing member that is actuatable by the valve needle and that cooperates with the valve-seat face to form a sealing seat, and a stop element that is mounted fixedly on the valve needle and that interacts with the at least one outlet opening of the at least one through-flow channel such that throttling takes place with respect to the least one through-flow channel when the armature is located with its end face at the stop element.
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