Patents by Inventor Eberhard Kull
Eberhard Kull 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: 10774800Abstract: The present disclosure relates to a nozzle body for a fuel injection valve, the nozzle body including a cavity and an injection channel for dispensing fuel from the cavity. The injection channel includes a first section and a second section downstream of the first section, the first and second sections having a common interface. The first section extends from a fuel inlet opening to a second opening disposed at the common interface. The cross-sectional area of the first section monotonically decreases from the fuel inlet opening to the common interface. The cross-sectional area of the second section monotonically increases from the common interface to the fuel outlet opening.Type: GrantFiled: December 3, 2014Date of Patent: September 15, 2020Assignee: CONTINENTAL AUTOMOTIVE GMBHInventors: Antonio Agresta, Luca Gestri, Eberhard Kull, Marco Saliu, Hong Zhang, Gerd Roesel, Erwin Achleitner
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Publication number: 20160319792Abstract: The present disclosure relates to a nozzle body for a fuel injection valve, the nozzle body including a cavity and an injection channel for dispensing fuel from the cavity. The injection channel includes a first section and a second section downstream of the first section, the first and second sections having a common interface. The first section extends from a fuel inlet opening to a second opening disposed at the common interface. The cross-sectional area of the first section monotonically decreases from the fuel inlet opening to the common interface. The cross-sectional area of the second section monotonically increases from the common interface to the fuel outlet opening.Type: ApplicationFiled: December 3, 2014Publication date: November 3, 2016Applicant: Continental Automotive GmbHInventors: Antonio Agresta, Luca Gestri, Eberhard Kull, Marco Saliu, Hong Zhang, Gerd Roesel, Erwin Achleitner
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Patent number: 8459232Abstract: An injection system for injecting fuel has an actuator, a pilot valve with a valve mushroom, and a supply throttle. The control chamber encompasses a control piston, a first discharge throttle, a first sealing edge for forming a first sealing seat along with the valve mushroom, a second sealing edge of a piston chamber with a valve piston, the second sealing edge forming a second sealing seat along with the valve piston during a maximum actuator working lift for sealing the piston chamber and the valve chamber from each other; and a second discharge throttle connecting the piston chamber to the low-pressure zone between the first and the second sealing edge, wherein d1>d2>d3, d1 are the minimum diameter of the first discharge throttle, d2 being the minimum diameter of the second discharge throttle, and d3 being the minimum diameter of the supply throttle.Type: GrantFiled: August 4, 2008Date of Patent: June 11, 2013Assignee: Continental Automotive GmbHInventors: Fredrik Borchsenius, Uwe Jung, Grit Krüger, Eberhard Kull, Volker Mohr
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Publication number: 20100192911Abstract: An injection system for injecting fuel has an actuator, a pilot valve with a valve mushroom, and a supply throttle. The control chamber encompasses a control piston, a first discharge throttle, a first sealing edge for forming a first sealing seat along with the valve mushroom, a second sealing edge of a piston chamber with a valve piston, the second sealing edge forming a second sealing seat along with the valve piston during a maximum actuator working lift for sealing the piston chamber and the valve chamber from each other; and a second discharge throttle connecting the piston chamber to the low-pressure zone between the first and the second sealing edge, wherein d1>d2>d3, d1 are the minimum diameter of the first discharge throttle, d2 being the minimum diameter of the second discharge throttle, and d3 being the minimum diameter of the supply throttle.Type: ApplicationFiled: August 4, 2008Publication date: August 5, 2010Inventors: Fredrik Borchsenius, Uwe Jung, Grit Krüger, Eberhard Kull, Volker Mohr
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Patent number: 7202441Abstract: A method for producing a hole in a body, especially an injection hole in a fuel injector is disclosed. The hole (L) is first produced by a percussion boring process or a trepanation boring process using a laser. The percussion boring process lasts less than 3 seconds. The trepanation boring process lasts less than 10 seconds. After percussion boring or trepanation boring a smoothing step is carried out by forcing a medium that is mixed with abrasive particles under pressure through the hole until any roughnesses of surfaces (F) of the body that form the hole (L) are substantially removed.Type: GrantFiled: August 14, 2003Date of Patent: April 10, 2007Assignee: Siemens AktiengesellschaftInventors: Wendelin Klügl, Eberhard Kull, Gerd Schmutzler
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Publication number: 20070039592Abstract: An arrangement with an injection valve (7) is disclosed, arranged in a cylinder head (1) and which permits the recording of the pressure in the combustion chamber (21) of an internal combustion engine (22). A pressure sensor (16) is thus provided, mounted on the injection valve (7). A sleeve (13) is provided as pressure transfer means, enclosing a nozzle body (8) of the injection valve (7), the upper end of which rests on the pressure sensor (16). The lower end of the sleeve (13) runs in a drilling (2) in the cylinder head (22) as far as the region of the end of the drilling (2). A pressure change in the combustion chamber (21) is transmitted to the sleeve (13) by the lower end (14) of the sleeve (13), in the form of a annular surface and transmitted to the pressure sensor (16), by means of the sleeve (13). The embodiment of the sleeve (13) permits an economical and simply produced pressure transfer means.Type: ApplicationFiled: September 3, 2004Publication date: February 22, 2007Inventor: Eberhard Kull
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Patent number: 7017840Abstract: An injection device for injecting fuel comprises a nozzle needle (2), which is arranged in a nozzle body (1), and a micro-bore (10) formed in the nozzle body (1), in which at least one injection hole (8) is configured. Here one tip (3) of the nozzle needle (2) projects into the micro-bore (10) in such a way that the tip (3) is arranged at the level of the injection holes (8) in the axial direction (X—X) of the nozzle needle, with recesses being formed in the tip at the tip (3) of the nozzle needle (2) level with the injection holes (8), in order to ensure a minimum distance between the tip (3) and the injection holes (8).Type: GrantFiled: October 7, 2003Date of Patent: March 28, 2006Assignee: Siemens AktiengesellschaftInventors: Grit Krüger, Eberhard Kull, Ferdinand Löbbering, Jürgen Schindlatz, Clemens Senghaas
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Publication number: 20040112988Abstract: An injection device for injecting fuel comprises a nozzle needle (2), which is arranged in a nozzle body (1), and a micro-bore (10) formed in the nozzle body (1), in which at least one injection hole (8) is configured. Here one tip (3) of the nozzle needle (2) projects into the micro-bore (10) in such a way that the tip (3) is arranged at the level of the injection holes (8) in the axial direction (X-X) of the nozzle needle, with recesses being formed in the tip at the tip (3) of the nozzle needle (2) level with the injection holes (8), in order to ensure a minimum distance between the tip (3) and the injection holes (8).Type: ApplicationFiled: October 7, 2003Publication date: June 17, 2004Inventors: Grit Kruger, Eberhard Kull, Ferdinand Lobbering, Jurgen Schindlatz, Clemens Senghaas
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Publication number: 20040056119Abstract: A fuel injection valve comprising a nozzle body (8) having a nozzle body seat (18), and a nozzle needle (2) is disclosed which is guided into the nozzle body (8) in a sealed manner and which comprises a nozzle needle shaft (6) and a nozzle needle seat (12). The nozzle body seat (18) and the nozzle needle seat (12) together form a sealed seat (20). A gap (28) is provided between the sealed seat (20) and the nozzle needle shaft (6). An outer surface (25) of the nozzle needle (2) extends in the region of the gap (28) essentially parallel to an inner surface (26) of the nozzle body (8).Type: ApplicationFiled: August 5, 2003Publication date: March 25, 2004Inventors: Andreas Fath, Wendelin Klugl, Eberhard Kull, Hakan Yalcin
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Publication number: 20040031465Abstract: A method for producing a hole in a body, especially an injection hole in a fuel injector is disclosed. The hole (L) is first produced by a percussion boring process or a trepanation boring process using a laser. The percussion boring process lasts less than 3 seconds. The trepanation boring process lasts less than 10 seconds. After percussion boring or trepanation boring a smoothing step is carried out by forcing a medium that is mixed with abrasive particles under pressure through the hole until any roughnesses of surfaces (F) of the body that form the hole (L) are substantially removed.Type: ApplicationFiled: August 14, 2003Publication date: February 19, 2004Inventors: Wendelin Klugl, Eberhard Kull, Gerd Schmutzler
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Patent number: 6565017Abstract: Located between the frustoconical needle tip and the cylindrical needle shank of a nozzle needle of a fuel injection valve is a frustoconical needle portion, into which is introduced a peripheral groove. Through this kind of arrangement damping is capable of being set, depending on the position of the groove, during the axial movement of the nozzle needle.Type: GrantFiled: July 6, 2000Date of Patent: May 20, 2003Assignee: Siemens AktiengesellschaftInventors: Andreas Fath, Wilhelm Frank, Wendelin Klügl, Eberhard Kull, Günter Lewentz, Hakan Yalcin
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Patent number: 6546914Abstract: The nozzle body (5) of a fuel injection valve has a central bore (54) in which a nozzle needle (1) is guided. The tip (52) of the nozzle body (5) has a tapered valve seat (55) which forms together with the sealing edge (27) of the nozzle needle (1) a valve (27, 55) which controls the flow of fuel to the injection holes (9) in the nozzle tip (52). Underneath the sealing edge (27) a circumferential groove (33) is disposed in the truncatoconical needle tip (30, 35, 40, 45) at the level of which the injection holes (9) are disposed, so that when the valve (27, 55) opens the nozzle needle (1) is axially stabilized and the shaping of the injected jet is improved.Type: GrantFiled: November 27, 2000Date of Patent: April 15, 2003Assignee: Siemens AktiengesellschaftInventors: Andreas Fath, Günter Lewentz, Wilhelm Frank, Eberhard Kull, Hakan Yalcin, Wendelin Klügl
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Patent number: 6443374Abstract: In a nozzle body, a degree of rounding of edges of an entry region of an injection hole duct in the nozzle body is dependent on a distribution of a fuel stream around the entry region. The edges being more rounded, the greater the fuel stream at the respective edge portion is. The entry region of the injection hole duct has, in this case, preferably the form of an ellipse.Type: GrantFiled: July 10, 2000Date of Patent: September 3, 2002Assignee: Siemens AktiengesellschaftInventors: Andrej Astachow, Eberhard Kull, Andreas Fath, Hakan Yalcin