Patents by Inventor Manfred Mack
Manfred Mack 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: 7198203Abstract: A fuel injector in injection systems for internal combustion engines having a valve body containing a control chamber that can be pressure-relieved and can be acted on with fuel via an inlet throttle and can be pressure-relieved via an outlet throttle. A first actuator can actuate a closing element. The valve body is connected to a holding body that has a nozzle body connected to it, which encompasses an injection valve element. In order to relieve the pressure in the control chamber, an additional, second outlet throttle is provided, whose closing element can be actuated either by an additional actuator or as a function of the power supply to a double-switching actuator.Type: GrantFiled: July 10, 2003Date of Patent: April 3, 2007Assignee: Robert Bosch GmbHInventors: Achim Brenk, Martin Kropp, Manfred Mack, Juergen Hammer, Reinhard Tampe, Heike Bastian
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Patent number: 7083113Abstract: A fuel injection apparatus for injecting fuel into the combustion chambers of an internal combustion engine. includes a high pressure accumulator, a pressure booster, and a metering valve. The pressure booster includes a working chamber and a control chamber that are separated from each other by an axially movable piston. A pressure change in the control chamber produces a pressure change in a compression chamber that acts on a nozzle chamber via a fuel inlet. The nozzle chamber encompasses a nozzle needle. A nozzle spring chamber that acts on the injection valve element can be filled on the high-pressure side via a line that leads from the compression chamber and contains an inlet throttle restriction. On the outlet side, the nozzle spring chamber is connected to a chamber of the pressure booster via a line that contains an outlet throttle restriction.Type: GrantFiled: April 9, 2003Date of Patent: August 1, 2006Assignee: Robert Bosch GmbHInventors: Martin Kropp, Hans-Christoph Magel, Manfred Mack, Christian Grimminger
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Publication number: 20050263621Abstract: A fuel injector in injection systems for internal combustion engines having a valve body containing a control chamber that can be pressure-relieved and can be acted on with fuel via an inlet throttle and can be pressure-relieved via an outlet throttle. A first actuator can actuate a closing element. The valve body is connected to a holding body that has a nozzle body connected to it, which encompasses an injection valve element. In order to relieve the pressure in the control chamber, an additional, second outlet throttle is provided, whose closing element can be actuated either by an additional actuator or as a function of the power supply to a double-switching actuator.Type: ApplicationFiled: July 10, 2003Publication date: December 1, 2005Inventors: Achim Brenk, Martin Kropp, Manfred Mack, Juergen Hammer, Reinhard Tampe, Heike Bastian
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Patent number: 6964266Abstract: The invention relates to a 3/2-port directional-control valve for controlling the injection of fuel in a common rail injection system of an internal combustion engine, with a first switched position in which an injection nozzle is connected to a fuel return and with a second switched position in which the injection nozzle is connected to a high-pressure fuel reservoir. The beginning of the injection takes place in a pressure-controlled manner, whereas the end of the injection takes place in a stroke-controlled manner.Type: GrantFiled: January 22, 2002Date of Patent: November 15, 2005Assignee: Robert Bosch GmbHInventors: Achim Brenk, Wolfgang Klenk, Uwe Gordon, Manfred Mack
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Publication number: 20050077378Abstract: A fuel injection apparatus for injecting fuel into the combustion chambers of an internal combustion engine includes a high pressure accumulator, a pressure booster, and a metering valve. The pressure booster includes a working chamber and a control chamber that are separated from each other by an axially movable piston. A pressure change in the control chamber produces a pressure change in a compression chamber that acts on a nozzle chamber via a fuel inlet. The nozzle chamber encampasses a nozzle needle. A nozzle spring chamber that acts on the injection valve element can be filled on the high-pressure side via a line that leads from the compression chamber and contains an inlet throttle restriction. On the outlet side, the nozzle spring chamber is connected to a chamber of the pressure booster via a line that contains an outlet throttle restriction.Type: ApplicationFiled: April 9, 2003Publication date: April 14, 2005Inventors: Martin Kropp, Hans-Christoph Magel, Manfred Mack, Christian Grimminger
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Patent number: 6874476Abstract: The invention relates to a 3/2-way valve for controlling the injection of fuel in a common rail injection system of an internal combustion engine, having a first switching position, in which an injection nozzle is in communication with a fuel return, and a second switching position, in which the injection nozzle is in communication with a common rail. To improve the function and quality of the injection, the 3/2-way valve includes two force-balanced control pistons, which are guided separately from one another, and on each of which a respective valve seat edge is embodied.Type: GrantFiled: March 15, 2002Date of Patent: April 5, 2005Assignee: Robert Bosch GmbHInventors: Achim Brenk, Wolfgang Klenk, Uwe Gordon, Manfred Mack
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Patent number: 6837451Abstract: The invention relates to a 3/2-way valve for controlling the injection of fuel in a common rail injection system of an internal combustion engine, having a first switching position, in which an injection nozzle is in communication with a fuel return, and having a second switching position, in which the injection nozzle is in communication with a high-pressure fuel reservoir. To improve the function and quality of the injection, the 3/2-way valve includes a force-balanced control piston, and the control edge of the control piston is pressure-equalized by means of a blind bore.Type: GrantFiled: March 12, 2002Date of Patent: January 4, 2005Assignee: Robert Bosch GmbHInventors: Nestor Rodriguez-Amaya, Achim Brenk, Wolfgang Klenk, Uwe Gordon, Manfred Mack, Hubert Greif
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Patent number: 6769634Abstract: In a fuel injection nozzle having a nozzle body which body has one first and one second group of injection ports, one first and one second nozzle needle, and one separate pressure chamber for each nozzle needle, so that the injection needles are adjustable independently of one another between a closed position, in which the injection ports associated with the corresponding nozzle needle are closed, and an injection position, in which the corresponding injection ports are opened, a free choice of injection cross sections is to be made possible, while the design is simple. To that end, it is provided that the two nozzle needles adjoin one another.Type: GrantFiled: February 19, 2002Date of Patent: August 3, 2004Assignee: Robert Bosch GmbHInventors: Achim Brenk, Wolfgang Klenk, Uwe Gordon, Manfred Mack
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Patent number: 6764058Abstract: A control valve and a fuel injection valve provided with same should be produced, in which it is possible to switch from a first operating state to a second operating state inexpensively and with short switching times, without requiring a hydraulic control line. To this end, a control valve is provided, which has a valve housing, a pressure chamber filled with electrorheological fluid, a displacing element that can slide in the valve housing and protrudes into the pressure chamber, and two electrodes that can apply an electrical field to the electrorheological fluid.Type: GrantFiled: October 22, 2001Date of Patent: July 20, 2004Assignee: Robert Bosch GmbHInventors: Achim Brenk, Wolfgang Klenk, Uwe Gordon, Manfred Mack
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Publication number: 20040134466Abstract: The invention relates to a 3/2-way valve for controlling the injection of fuel in a common rail injection system of an internal combustion engine, having a first switching position, in which an injection nozzle is in communication with a fuel return, and a second switching position, in which the injection nozzle is in communication with a common rail.Type: ApplicationFiled: July 2, 2003Publication date: July 15, 2004Inventors: Achim Brenk, Wolfgang Klenk, Uwe Gordon, Manfred Mack
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Patent number: 6745750Abstract: A fuel injection system, having a fuel injection valve and a control valve, which control valve has a control valve member that is longitudinally displaceable in a control valve bore. A control valve sealing face is embodied on the control valve member; it cooperates with a control valve seat and thus controls the communication between a first pressure space and a second pressure space; the first pressure space communicates with a high-pressure collection chamber. In a valve body, a bore is embodied in which a pistonlike valve needle, with its end toward the combustion chamber, controls the opening of at least one injection opening by executing a longitudinal motion in response to the pressure in a pressure chamber; the pressure chamber communicates with the second pressure space via an inlet conduit.Type: GrantFiled: November 25, 2002Date of Patent: June 8, 2004Assignee: Robert Bosch GmbHInventors: Walter Egler, Giovanni Ferraro, Hansjoerg Egeler, Achim Brenk, Wolfgang Klenk, Peter Boehland, Werner Teschner, Sebastian Kanne, Ingolf Kahleyss, Uwe Gordon, Manfred Mack
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Publication number: 20040089268Abstract: In a pressure-controlled fuel injection apparatus (1) with a common rail, an injector (5), and a metering valve (6) for controlling the injector (5), the metering valve (6) is integrated into the common rail. This reduces the production cost for the fuel injection apparatus (1).Type: ApplicationFiled: July 23, 2003Publication date: May 13, 2004Inventors: Achim Brenk, Wolfgang Klenk, Roland Bleher, Uwe Gordon, Manfred Mack
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Publication number: 20040069274Abstract: The invention relates to a 3/2-port directional-control valve for controlling the injection of fuel in a common rail injection system of an internal combustion engine, with a first switched position in which an injection nozzle is connected to a fuel return and with a second switched position in which the injection nozzle is connected to a high-pressure fuel reservoir. The beginning of the injection takes place in a pressure-controlled manner, whereas the end of the injection takes place in a stroke-controlled manner.Type: ApplicationFiled: February 10, 2003Publication date: April 15, 2004Inventors: Achim Brenk, Wolfgang Klenk, Uwe Gordon, Manfred Mack
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Patent number: 6691935Abstract: In an injection nozzle for a fuel injection system, the opening stroke of the nozzle needle is to be limited selectively, so that different injection cross sections can be employed. To that end, the injection nozzle is provided with a nozzle body, a nozzle needle displaceable in the nozzle body, two groups of injection ports, which are uncovered as a function of an opening stroke of the nozzle needle, a piston that is connected to the nozzle needle, a stop chamber in which the piston is disposed and which is provided with an outlet, and a control valve that can open and close the outlet of the stop chamber, as a result of which the stroke of the piston in the stop chamber and thus the opening stroke of the nozzle needle can be selectively limited.Type: GrantFiled: March 4, 2002Date of Patent: February 17, 2004Assignee: Robert Bosch GmbHInventors: Detlev Potz, Gerhard Mack, Achim Brenk, Wolfgang Klenk, Thomas Kuegler, Roland Bleher, Uwe Gordon, Manfred Mack
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Patent number: 6659084Abstract: The invention relates to a fuel injection apparatus for an internal combustion engine, having an injection valve that protrudes into the combustion chamber of the engine. This valve communicates with a valve chamber in that a control part closes and opens inlet bores for fuel that is at high pressure. The control part is actuatable by means of a hydraulic-mechanical booster. The pump part, valve part and nozzle part of the fuel injection apparatus are disposed in a vertical arrangement, hydraulically in line with on another in terms of the fuel flow.Type: GrantFiled: April 26, 2002Date of Patent: December 9, 2003Assignee: Robert Bosch GmbHInventors: Anja Melsheimer, Matthias Beck, Manfred Mack
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Patent number: 6637409Abstract: In a fuel injection system for internal combustion engines, including an electronically triggered control valve with an axial through bore, which is divided by two valve seats into three annular chambers, to which respectively a supply line for fuel at high pressure, a high-pressure line leading away to an injection valve, and a relief line are connected, and having a control piston, which is guided in the through bore and which has two valve sealing faces cooperating with the two valve seats, respectively, the control piston according to the invention has a further valve sealing face, which cooperates with the first valve seat and whose spacing from the first valve sealing face is at least equal to the spacing between the second valve sealing face and the second valve seat when the first sealing seat is closed. A communication between the supply line and the relief line is thus reliably prevented.Type: GrantFiled: June 13, 2002Date of Patent: October 28, 2003Assignee: Robert Bosch GmbHInventors: Achim Brenk, Wolfgang Klenk, Uwe Gordon, Manfred Mack
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Publication number: 20030172978Abstract: The invention relates to a 3/2-way valve for controlling the injection of fuel in a common rail injection system of an internal combustion engine, having a first switching position, in which an injection nozzle is in communication with a fuel return, and having a second switching position, in which the injection nozzle is in communication with a high-pressure fuel reservoir.Type: ApplicationFiled: May 9, 2003Publication date: September 18, 2003Inventors: Nestor Rodriguez-Amaya, Achim Brenk, Wolfgang Klenk, Uwe Gordon, Manfred Mack, Hubert Greif
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Patent number: D634757Type: GrantFiled: July 27, 2010Date of Patent: March 22, 2011Assignee: Kramer-Werke GmbHInventor: Manfred Mack
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Patent number: D634758Type: GrantFiled: July 27, 2010Date of Patent: March 22, 2011Assignee: Kramer-Werke GmbHInventor: Manfred Mack
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Patent number: D641028Type: GrantFiled: November 17, 2010Date of Patent: July 5, 2011Assignee: KRAMER-WERKE GmbHInventor: Manfred Mack