Patents by Inventor Juergen Graner
Juergen Graner has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20140008468Abstract: A fuel injector for fuel injection systems of internal combustion engines. The valve includes an electromagnetic actuating element which has a solenoid, a solid core, an external magnetic circuit component, and a movable armature for activating a valve closing member which cooperates with a valve seat surface provided on a valve seat member. The valve has extremely small outer dimensions. By optimizing the dimensions of the electromagnetic circuit, the outer diameter of the external magnetic circuit component in the peripheral area of the solenoid is 10.5 mm<DM<13.5 mm. This increases the flexibility in installing fuel injectors having different valve lengths, which are made possible due to the special modular design. The valve is suitable as a fuel injector in particular for use in fuel injection systems of mixture-compressing, spark ignition internal combustion engines.Type: ApplicationFiled: July 26, 2011Publication date: January 9, 2014Inventors: Juergen Graner, Martin Maier, Bernd Rieg, Volker Sohm, Juergen Lander, Takuya Mizobe
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Publication number: 20130248744Abstract: A method is described for manufacturing a solenoid valve, in particular a fuel injector, the solenoid valve having a valve needle which is movably guided in the axial direction, a magnet core and an armature which is situated axially diametrically opposed to the magnet core, the armature being situated on the valve needle, the armature having a first base material and a first reinforcing element and the magnet core having a second base material and a second reinforcing element. The method has one method step. The first reinforcing element is applied to the first base material and/or the second reinforcing element is applied to the second base material during the method step with the aid of molten bath spraying or with the aid of cold gas spraying.Type: ApplicationFiled: March 26, 2013Publication date: September 26, 2013Applicant: ROBERT BOSCH GMBHInventors: Juergen GRANER, Martin MAIER, Anselm BERG
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Publication number: 20120325939Abstract: An injector having a valve opening, a cylindrical pipe, a valve opening, a valve needle situated inside the pipe in the radial direction and guided to allow axial displacement; a solenoid coil situated outside the pipe in the radial direction; a solenoid core disposed inside the pipe in the radial direction; and a magnetic armature situated inside the pipe, opposite the solenoid core in the radial direction, the magnetic armature being disposed on the valve needle. The pipe is a magnetic first material in a first pipe region and a third pipe region, the first region facing the valve opening in the axial direction, and the third pipe region facing away from the valve opening in the axial direction. The pipe is a non-magnetic second material in a second pipe region, the second pipe region being between the first pipe region and the third pipe region in the axial direction.Type: ApplicationFiled: December 1, 2010Publication date: December 27, 2012Inventors: Juergen Graner, Martin Maier, Juergen Lander, Jochen Rager
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Publication number: 20120305816Abstract: An electrically actuatable valve for injecting fuel includes a magnetic actuator having multiple components, at least one component of the magnetic actuator having multiple sectors made of soft magnetic material and multiple insulating separating webs. A separating web is situated between each two neighboring sectors and entirely separates the neighboring sectors from one another electrically.Type: ApplicationFiled: October 7, 2010Publication date: December 6, 2012Inventors: Jens Pohlmann, Juergen Graner
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Patent number: 8245402Abstract: The method for manufacturing a solid housing, in particular a valve housing for an electromagnetically operable valve, is characterized in that the following method steps are used: a) providing a sheet metal strip made of a magnetic or magnetizable material, b) introducing an additive into a middle area of the sheet metal strip and fusing there for forming a non-magnetizable structure, c) cutting the sheet metal strip into a sheet metal piece of desired width, d) deforming the sheet metal piece into a sleeve shape, e) mutual fastening of the cut edges now facing each other and running in the longitudinal direction of the sleeve for forming a sleeve blank, f) final machining of the sleeve blank until a desired geometry of the housing is achieved. The housing is suitable in particular for use in fuel injectors in fuel injector systems of mixture-compressing spark-ignition internal combustion engines.Type: GrantFiled: August 17, 2006Date of Patent: August 21, 2012Assignee: Robert Bosch GmbHInventors: Max Seitter, Juergen Graner, Tilla Haubold, Stefan Oetinger
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Publication number: 20120012679Abstract: A device for injecting fuel includes an electrodynamic drive having a movably situated coil, an inwardly opening needle which opens and closes injection holes on a valve seat, a connecting element which connects the needle to the movably situated coil, and a pressure chamber which is situated at the needle upstream from the valve seat and contains pressurized fuel.Type: ApplicationFiled: November 27, 2009Publication date: January 19, 2012Inventors: Juergen Graner, Martin Maier, Guenther Hohl
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Publication number: 20120000994Abstract: A device for injecting pressurized fuel includes an electrodynamic actuator having a movably situated coil, an outwardly opening needle which opens and closes a cross section on a valve seat, a connecting device which connects the needle to the movably situated coil, a pressure chamber which is situated at the needle upstream from the valve seat and contains pressurized fuel, a low-pressure chamber from which, fuel is dischargeable, and a gap seal which is provided at an outer peripheral region of the needle, the gap seal (16) providing a connection between the pressure chamber and the low-pressure chamber.Type: ApplicationFiled: November 27, 2009Publication date: January 5, 2012Inventors: Juergen Graner, Martin Maier, Michael Huebel, Guenther Hohl
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Publication number: 20100281691Abstract: The method for manufacturing a solid housing, in particular a valve housing for an electromagnetically operable valve, is characterized in that the following method steps are used: a) providing a sheet metal strip made of a magnetic or magnetizable material, b) introducing an additive into a middle area of the sheet metal strip and fusing there for forming a non-magnetizable structure, c) cutting the sheet metal strip into a sheet metal piece of desired width, d) deforming the sheet metal piece into a sleeve shape, e) mutual fastening of the cut edges now facing each other and running in the longitudinal direction of the sleeve for forming a sleeve blank, f) final machining of the sleeve blank until a desired geometry of the housing is achieved. The housing is suitable in particular for use in fuel injectors in fuel injector systems of mixture-compressing spark-ignition internal combustion engines.Type: ApplicationFiled: August 17, 2006Publication date: November 11, 2010Inventors: Max Seitter, Juergen Graner, Tilla Haubold, Stefan Oetinger
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Publication number: 20090211096Abstract: A method for manufacturing a solid housing, in particular a valve housing for an electromagnetically operable valve, includes the following operations or steps: a) providing a base element made of a magnetic or magnetizable material, b) carburizing and/or nitride-hardening of at least one subarea of the base element by diffusion of carbon and/or nitrogen under thermal treatment for forming a non-magnetizable structure in the area of the diffusion zone, and c) finishing the base element so created until an intended geometry of the housing is achieved. The housing is suitable in particular for use in fuel injectors in fuel injector systems of mixture-compressing spark-ignition internal combustion engines.Type: ApplicationFiled: August 17, 2006Publication date: August 27, 2009Inventors: Max Seitter, Juergen Graner, Stefan Oetinger
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Patent number: 7093779Abstract: A fuel injector, in particular a fuel injector for fuel-injection systems of internal combustion engines, has a valve needle which cooperates with a valve-seat surface to form a sealing seat, and an armature which is connected to the valve needle, the armature being acted upon in the closing direction by a restoring spring and cooperating with a magnetic coil. The armature has a guide flange which is guided at an opposite surface. The guide flange does contact the opposite surface in all places, so that recesses are formed between the guide flange and the opposite surface.Type: GrantFiled: June 21, 2002Date of Patent: August 22, 2006Assignee: Robert Bosch GmbHInventors: Thomas Sebastian, Juergen Graner, Wolfgang-Manfred Ruehle, Joachim Stilling, Matthias Boee, Norbert Keim
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Publication number: 20060011751Abstract: A fuel injector, in particular a fuel injector for fuel-injection systems of internal combustion engines, has a valve needle which cooperates with a valve-seat surface to form a sealing seat, and an armature which is connected to the valve needle, the armature being acted upon in the closing direction by a restoring spring and cooperating with a magnetic coil. The armature has a guide flange which is guided at an opposite surface. The guide flange does contact the opposite surface in all places, so that recesses are formed between the guide flange and the opposite surface.Type: ApplicationFiled: June 21, 2002Publication date: January 19, 2006Inventors: Thomas Sebastian, Juergen Graner, Wolfgang-Manfred Ruehle, Joachim Stilling, Matthias Boee, Norbert Keim
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Patent number: 5769965Abstract: A method for treating soft magnetic parts by annealing and producing a wear guard layer, in which the soft magnetic parts are either successively annealed and provided with a wear guard layer in a reaction chamber of a treatment apparatus, or the annealing and production of a wear guard layer are done simultaneously in the reaction chamber. This avoids intermediate transportation and temporary storage as well as contamination of the parts and reduces the costs of the method. The method is especially suitable for treating soft magnetic parts of electromagnetic fuel injection valves.Type: GrantFiled: April 19, 1996Date of Patent: June 23, 1998Assignee: Robert Bosch GmbHInventors: Dieter Liedtke, Juergen Graner, Norbert Keim, Joerg Illing
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Patent number: 5428331Abstract: This invention is for holding components made of a ferromagnetic material parallel to a component axis for electroplating the component. The component substrate according to the invention has at least two magnet poles, oriented toward the components and having opposite polarity. The magnet field lines extend from one magnet pole to the other magnet pole through the components only in the vicinity of a contact faces of the components oriented toward the magnet poles. This prevents ferromagnetic particles from depositing on the ends of the components remote from the contact faces. The apparatus according to the invention is especially suitable for holding a plurality of components during electrolytic surface coating of the components.Type: GrantFiled: November 18, 1992Date of Patent: June 27, 1995Assignee: Robert Bosch GmbHInventors: Juergen Graner, Norbert Keim, Martin Maier, Manfred Nitsch, Josef Weber
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Patent number: 5188336Abstract: A magnet system for an outwardly opening magnet valve having a core winding, an armature carrying the valve body, and a permanent magnet disposed symmetrically to the winding. The closed magnet circuits of the electromagnet and permanent magnet partly overlap, and a ring of ferromagnetic material is associated with the permanent magnet 1 in the magnet circuit of the electromagnet, this ring absorbs half the flux I of the permanent magnet, and the magnet circuit for the electromagnet is dimensioned to one-half the permanent flux.Type: GrantFiled: March 2, 1990Date of Patent: February 23, 1993Assignee: Robert Bosch GmbHInventors: Juergen Graner, Hans Kubach
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Patent number: 5161779Abstract: A magnet system for magnet valves for controlling liquids including an electromagnet and a permanent magnet that produces magnetic fluxes, the magnetic fluxes of which are oriented opposite one another in a working air gap formed between a free-floating armature and a magnet pole. To attain a course of the force of attraction acting upon the armature that becomes negative beyond a certain excitation of the electromagnet, and to reduce the trigger power for the electromagnet, a magnetic opposite pole is disposed on the side of the armature remote from the working air gap, forming a second working air gap, which is coupled to the magnet housing, optionally via a stray air gap, via a flow guide element annularly engaging the permanent magnet.Type: GrantFiled: May 20, 1991Date of Patent: November 10, 1992Assignee: Robert Bosch GmbHInventors: Juergen Graner, Guenther Bantleon, Hans Kubach, Marcel Kirchner
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Patent number: 5056754Abstract: An electromagnetically actuatable valve is proposed that serves in particular as a fuel injection valve for fuel injection systems of internal combustion engines. An armature cooperates with magnet poles, and a bearing cone the length of the generatrix of which is approximately equivalent to the diameter is machined into a valve seat body. The armature and valve seat body may also have bearing faces of calotte shape facing one another.Type: GrantFiled: September 21, 1990Date of Patent: October 15, 1991Assignee: Robert Bosch GmbHInventors: Juergen Graner, Marcel Kibchner, Hans Kubach
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Patent number: 4976405Abstract: An electromagnetically actuatable valve is proposed that serves in particular as a fuel injection valve for fuel injection systems of internal combustion engines. An armature cooperates with magnet poles, and a bearing cone the length of the generatrix of which is approximately equivalent to the diameter is machined into a valve seat body. The armature and valve seat body may also have bearing faces of calotte shape facing one another.Type: GrantFiled: February 28, 1990Date of Patent: December 11, 1990Assignee: Robert Bosch GmbHInventors: Juergen Graner, Marcel Kirchner, Hans Kubach