Patents by Inventor Andreas Rettich
Andreas Rettich 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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Patent number: 9689360Abstract: The invention relates to an actuator (1) comprising a housing (8), a coil (29) and an armature (2) which interacts with a tappet (30) and a spring, the armature plate (3) thereof being arranged to lie opposite an armature counterpiece (16), and said actuator (1) comprising at least one magnetostrictively-active component. According to the invention, an actuator (1) is provided with which large actuating paths can be travelled at high actuating forces. This is achieved by the actuator (1) additionally being designed to act as a solenoid.Type: GrantFiled: September 30, 2013Date of Patent: June 27, 2017Assignee: Robert Bosch GmbHInventors: Marco Beier, Andreas Rettich, Thomas Pauer, Mario Ricco
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Patent number: 9175652Abstract: The invention relates to a fuel injection device for injecting fuel into a combustion chamber of an internal combustion engine, comprising an end (6) that is located at a distance from the combustion chamber and has at least one electric connection (33) and at least one return flow connection (40). In order to create a fuel injection device (1) that has a simple design and can be produced cost-effectively, the return flow connection (40) and the electric connection (33) are integrated in a common connecting member.Type: GrantFiled: March 12, 2010Date of Patent: November 3, 2015Assignee: Robert Bosch GmbHInventors: Thomas Pauer, Andreas Rettich, Markus Rueckle
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Publication number: 20150292456Abstract: The invention relates to an actuator (1) comprising a housing (8), a coil (29) and an armature (2) which interacts with a tappet (30) and a spring, the armature plate (3) thereof being arranged to lie opposite an armature counterpiece (16), and said actuator (1) comprising at least one magnetostrictively-active component. According to the invention, an actuator (1) is provided with which large actuating paths can be travelled at high actuating forces. This is achieved by the actuator (1) additionally being designed to act as a solenoid.Type: ApplicationFiled: September 30, 2013Publication date: October 15, 2015Inventors: Marco Beier, Andreas Rettich, Thomas Pauer, Mario Ricco
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Patent number: 8573186Abstract: The invention relates to an injector for injecting fuel into combustion chambers of internal combustion engines. According to the invention, a valve seat of a control valve is designed as a flat seat that has a planar valve seat surface. A circumferential edge located on the face of a sleeve of the control valve rests on the planar valve seat surface when the control valve is closed.Type: GrantFiled: September 12, 2007Date of Patent: November 5, 2013Assignee: Robert Bosch GmbHInventors: Andreas Rettich, Friedrich Boecking
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Patent number: 8186609Abstract: The present invention relates to a fuel injector for injecting fuel into a combustion chamber of an internal combustion engine, having a valve piston that is displaceably guided in an injector body in terms of lifting motions, whereby the lifting motion of the valve piston can be controlled by a control valve. The control valve has a valve needle with a guide bore, so that the needle is displaceably guided in the direction of a lifting axis in terms of lifting motions. A guide section integrally formed on an end of a valve piece extends into the guide bore for the displaceable guidance of the valve needle in terms of lifting motions. Along the lifting axis a vertical bore extends through the valve piece into the guide section, such that fuel is able to flow through the bore from a control chamber into an annular chamber introduced between the guide bore and the guide section for controlling the lifting motion of the valve piston.Type: GrantFiled: January 17, 2008Date of Patent: May 29, 2012Assignee: Robert Bosch GmbHInventors: Holger Rapp, Wolfgang Stoecklein, Andreas Rettich
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Publication number: 20120090577Abstract: The invention relates to a fuel injection device for injecting fuel into a combustion chamber of an internal combustion engine, comprising an end (6) that is located at a distance from the combustion chamber and has at least one electric connection (33) and at least one return flow connection (40). In order to create a fuel injection device (1) that has a simple design and can be produced cost-effectively, the return flow connection (40) and the electric connection (33) are integrated in a common connecting member.Type: ApplicationFiled: March 12, 2010Publication date: April 19, 2012Applicant: ROBERT BOSCH GMBHInventors: Thomas Pauer, Andreas Rettich, Markus Rueckle
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Publication number: 20100319660Abstract: The present invention relates to a fuel injector for injecting fuel into a combustion chamber of an internal combustion engine, having a valve piston that is displaceably guided in an injector body in terms of lifting motions, whereby the lifting motion of the valve piston can be controlled by a control valve. The control valve has a valve needle with a guide bore, so that the needle is displaceably guided in the direction of a lifting axis in terms of lifting motions. A guide section integrally formed on an end of a valve piece extends into the guide bore for the displaceable guidance of the valve needle in terms of lifting motions. Along the lifting axis a vertical bore extends through the valve piece into the guide section, such that fuel is able to flow through the bore from a control chamber into an annular chamber introduced between the guide bore and the guide section for controlling the lifting motion of the valve piston.Type: ApplicationFiled: January 17, 2008Publication date: December 23, 2010Inventors: Holger Rapp, Wolfgang Stoecklein, Andreas Rettich
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Publication number: 20100294240Abstract: The invention relates to an injector for injecting fuel into combustion chambers of internal combustion engines. According to the invention, a valve seat of a control valve is designed as a flat seat that has a planar valve seat surface. A circumferential edge located on the face of a sleeve of the control valve rests on the planar valve seat surface when the control valve is closed.Type: ApplicationFiled: September 12, 2007Publication date: November 25, 2010Inventors: Andreas Rettich, Friedrich Boecking
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Publication number: 20080290196Abstract: The invention relates to a fuel injector having a solenoid valve for actuating an armature assembly which is configured in one piece or a plurality of pieces. A closing element is actuated via this in order to relieve the pressure in a control chamber. The armature assembly is guided in an armature guide which is fastened in the injector body by means of a valve-clamping screw. In a fixing region in the injector body, the armature guide has at least one circumferential recess which allows for deformation of the fixing region during fastening by the valve-clamping screw.Type: ApplicationFiled: October 16, 2006Publication date: November 27, 2008Inventors: Andreas Rettich, Stefan Haug, Markus Rueckle, Stephan Amelang
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Patent number: 6896198Abstract: An injector, especially for common rail injection systems of Diesel engines, has a nozzle needle, a control piston for actuating the nozzle needle, a valve that actuates the control piston and that is triggered by via an outlet throttle and an inlet throttle, and a hydraulic stop for the control piston, such that the flow from the inlet throttle to the outlet throttle at the narrowest cross section can additionally be throttled. The control piston is embodied conically on its offset top side oriented toward the outlet throttle or the inlet throttle.Type: GrantFiled: December 9, 2002Date of Patent: May 24, 2005Assignee: Robert Bosch GmbHInventors: Hermann Koch-Groeber, Uemit Canlioglu, Thilo Klam, Andreas Gaudl, Stefan Schuster, Christoffer Uhr, Andreas Rettich, Wolfgang Fleiner, Markus Rueckle
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Patent number: 6820858Abstract: A solenoid valve for controlling an injection valve of an internal combustion engine is provided, including an electromagnet, a movable armature, a control valve member moved with the armature and cooperating with a valve seat for opening and closing a fuel discharge channel of a control pressure chamber of the injection valve, and a sliding piece guiding the armature, which is positioned together with the armature and the control valve member in an armature chamber. For reducing the bounce of the armature, the sliding piece subdivides the armature chamber into a pressure relief chamber connected to a fuel low-pressure connection and an hydraulic damping chamber, into which a fuel discharge channel opens.Type: GrantFiled: October 24, 2002Date of Patent: November 23, 2004Assignee: Robert Bosch GmbHInventors: Rainer Haeberer, Matthias Horn, Andreas Rettich, Robert Hajnovic
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Patent number: 6811138Abstract: A solenoid valve is described, its armature having a part that is slidingly displaceable on the foundation bolt and is movable between two stops of the foundation bolt against the tension force of a restoring spring. When the armature strikes the valve seat of the solenoid valve, the slidingly displaceable part moves further under the influence of its inertial mass on the foundation bolt in the closing direction against the tension force of the restoring spring, until it strikes the second stop of the foundation bolt. The resulting transfer of momentum to the foundation bolt reduces impact of the armature on the valve seat and causes the armature to more quickly reach a defined rest position in which the solenoid valve is closed.Type: GrantFiled: October 18, 2002Date of Patent: November 2, 2004Assignee: Robert Bosch GmbHInventors: Wolfgang Kuehne, Rainer Haeberer, Matthias Horn, Christoph Ulmschneider, Andreas Rettich
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Patent number: 6796543Abstract: A solenoid valve for controlling a fuel injector of an internal combustion engine, including an electromagnet, a movable armature featuring an armature plate and an armature pin, as well as a control valve member, which is moved with the armature and cooperates with a valve seat, for opening and closing a fuel discharge passage of a control pressure chamber of the fuel injector, the armature plate being supported on the armature pin, so that it is slidably movable in the closing direction of the control valve member under the action of its inertial mass, against the elastic force of a return spring that acts upon the armature plate; and including a hydraulic damping device which permits damping of a post-oscillation of the armature plate during its dynamic sliding on the armature pin.Type: GrantFiled: November 4, 2002Date of Patent: September 28, 2004Assignee: Robert Bosch GmbHInventors: Rainer Haeberer, Hermann Koch-Grober, Holger Rapp, Christoffer Uhr, Andreas Rettich, Wolfgang Fleiner, Markus Rueckle
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Publication number: 20040026540Abstract: The present invention relates to a solenoid valve for controlling a fuel injector of an internal combustion engine, including an electromagnet (29), a movable armature featuring an armature plate (28) and an armature pin (27), as well as a control valve member (25) which is moved with the armature and cooperates with a valve seat (24), for opening and closing a fuel discharge passage (17) of a control pressure chamber (14) of the fuel injector (1), the armature plate (28) being supported on the armature pin (27) in such a manner that it is slidably movable in the closing direction of the control valve member (25) under the action of its inertial mass, against the elastic force of a return spring (35) that acts upon the armature plate (28); and including a hydraulic damping device which permits damping of a post-oscillation of the armature plate (28) during its dynamic sliding on the armature pin (27).Type: ApplicationFiled: November 4, 2002Publication date: February 12, 2004Inventors: Rainer Haeberer, Hermann Koch-Grober, Holger Rapp, Christoffer Uhr, Andreas Rettich, Wolfgang Fleiner, Markus Rueckle
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Publication number: 20030127614Abstract: The present invention relates to a solenoid valve (2) for controlling an injection valve (1) of an internal combustion engine, including an electromagnet (34), a movable armature (29), a control valve member (25,26) moved with the armature (29) and cooperating with a valve seat (24) for opening and closing a fuel discharge channel (17) of a control pressure chamber (14) of the injection valve, and a sliding piece (40) guiding the armature (29), which is positioned together with the armature (29) and the control valve member (25,26) in an armature chamber (51,52).Type: ApplicationFiled: October 24, 2002Publication date: July 10, 2003Inventors: Rainer Haeberer, Matthias Horn, Andreas Rettich, Robert Hajnovic
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Publication number: 20030111625Abstract: A solenoid valve is described, its armature having a part that is slidingly displaceable on the foundation bolt and is movable between two stops of the foundation bolt against the tension force of a restoring spring. When the armature strikes the valve seat of the solenoid valve, the slidingly displaceable part moves further under the influence of its inertial mass on the foundation bolt in the closing direction against the tension force of the restoring spring, until it strikes the second stop of the foundation bolt. The resulting transfer of momentum to the foundation bolt reduces impact of the armature on the valve seat and causes the armature to more quickly reach a defined rest position in which the solenoid valve is closed.Type: ApplicationFiled: October 18, 2002Publication date: June 19, 2003Inventors: Wolfgang Kuehne, Rainer Haeberer, Matthias Horn, Christoph Ulmschneider, Andreas Rettich
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Publication number: 20030106947Abstract: An injector, especially for common rail injection systems of Diesel engines, has a nozzle needle, a control piston for actuating the nozzle needle, a valve that actuates the control piston and that is triggered by via an outlet throttle and an inlet throttle, and a hydraulic stop for the control piston, such that the flow from the inlet throttle to the outlet throttle at the narrowest cross section can additionally be throttled. The control piston is embodied conically on its offset top side oriented toward the outlet throttle or the inlet throttle.Type: ApplicationFiled: December 9, 2002Publication date: June 12, 2003Inventors: Hermann Koch-Groeber, Uemit Canlioglu, Thilo Klam, Andreas Gaudl, Stefan Schuster, Christoffer Uhr, Andreas Rettich, Wolfgang Fleiner, Markus Rueckle