Patents by Inventor Dieter Kuhnert
Dieter Kuhnert 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: 8536769Abstract: The invention refers to a prechamber spark plug comprising an ignition electrode with several electrode arms. The ignition electrode is made of a cross-shaped blank that is cut out of sheet metal and then the electrode arms are set upright by bending. The sheet metal is made of iridium or an iridium-based alloy by rolling in a rolling direction and the ignition electrode blank is cut out in such a way that an angle of 50° or less is present between each of the electrode arms and the rolling direction (W).Type: GrantFiled: June 22, 2011Date of Patent: September 17, 2013Assignee: DKT Verwaltungs-GmbHInventors: Dieter Kuhnert, Georg Maul, Uwe Sailer
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Patent number: 8324792Abstract: The invention relates to a pre-chamber spark plug with a housing which, at its forward end, comprises a pre-chamber with a plurality of openings, an insulator arranged in the housing, a center electrode which is surrounded by the insulator and supports an ignition electrode arranged in the pre-chamber which comprises a plurality of electrode arms, wherein the electrode arms each comprise a rear section which extends in a transverse direction in relation to the longitudinal direction of the center electrode and a forward section which extends along a pre-chamber wall and forms a spark gap between itself and the pre-chamber wall. It is provided according to the invention that the electrode arms are embedded in the center electrode and project from a lateral surface of the center electrode. Furthermore, the invention relates to a method according to the invention.Type: GrantFiled: March 2, 2011Date of Patent: December 4, 2012Assignee: MULTITORCH GmbHInventors: Georg Maul, Jens Paesold, Uwe Sailer, Dieter Kuhnert
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Patent number: 8181617Abstract: An ignition device for the ignition of a gas mixture in a main combustion chamber (1), in particular of an internal combustion engine, is proposed, wherein the absorber body (5) is heated by means of a laser (8). A prechamber (10) is located upstream of the absorber body (5) on the combustion chamber inner side (6) in order to improve the ignition behavior.Type: GrantFiled: March 28, 2008Date of Patent: May 22, 2012Assignee: Multitorch GmbHInventors: Dieter Kuhnert, Maurice Kettner, Georg Maul
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Publication number: 20120025689Abstract: The invention refers to a prechamber spark plug comprising an ignition electrode with several electrode arms. The ignition electrode is made of a cross-shaped blank that is cut out of sheet metal and then the electrode arms are set upright by bending. The sheet metal is made of iridium or an iridium-based alloy by rolling in a rolling direction and the ignition electrode blank is cut out in such a way that an angle of 50° or less is present between each of the electrode arms and the rolling direction (W).Type: ApplicationFiled: June 22, 2011Publication date: February 2, 2012Inventors: Dieter KUHNERT, Georg MAUL, Uwe SAILER
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Patent number: 8053964Abstract: The invention relates to a spark plug for igniting a combustible gas mixture in an internal combustion engine, comprising an ignition electrode (4), an electrical supply line (5), to which the ignition electrode (4) is connected, an insulator body (6), through which the supply line (5) is passed, a housing head (2), which rests in sealing fashion on the insulator body (6) and bears an outer thread (3) for the purpose of screwing it into an internal combustion engine, a tube housing (9), which is fixed on the housing head (2), surrounds the insulator body (6) and has a hexagon head (13). The invention provides that the tube housing (9) surrounds an insulator body holder (7), which is welded to the housing head (2) and presses the insulator body (6) with a prestress against the housing head (2).Type: GrantFiled: August 13, 2007Date of Patent: November 8, 2011Assignee: Multitorch GmbHInventors: Georg Maul, Dieter Kuhnert
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Publication number: 20110215703Abstract: The invention relates to a pre-chamber spark plug with a housing which, at its forward end, comprises a pre-chamber with a plurality of openings, an insulator arranged in the housing, a center electrode which is surrounded by the insulator and supports an ignition electrode arranged in the pre-chamber which comprises a plurality of electrode arms, wherein the electrode arms each comprise a rear section which extends in a transverse direction in relation to the longitudinal direction of the center electrode and a forward section which extends along a pre-chamber wall and forms a spark gap between itself and the pre-chamber wall. It is provided according to the invention that the electrode arms are embedded in the center electrode and project from a lateral surface of the center electrode. Furthermore, the invention relates to a method according to the invention.Type: ApplicationFiled: March 2, 2011Publication date: September 8, 2011Inventors: Georg Maul, Jens Paesold, Uwe Sailer, Dieter Kuhnert
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Patent number: 7849830Abstract: A spark plug for igniting a combustible gas mixture in an internal combustion engine includes an ignition electrode with an electrical supply line is connected thereto. A pipe housing is provided for enclosing the electrical supply line and a venting channel is provided for discharging combustion gases from the pipe housing. The venting channel provides for discharging combustion gases infiltrating the spark plug as leakage gases run along the supply line.Type: GrantFiled: November 29, 2006Date of Patent: December 14, 2010Inventors: Georg Maul, Reinhard Latsch, Dieter Kuhnert
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Publication number: 20100147259Abstract: An ignition device for the ignition of a gas mixture in a main combustion chamber (1), in particular of an internal combustion engine, is proposed, wherein the absorber body (5) is heated by means of a laser (8). A prechamber (10) is located upstream of the absorber body (5) on the combustion chamber inner side (6) in order to improve the ignition behaviour.Type: ApplicationFiled: March 28, 2008Publication date: June 17, 2010Inventors: Dieter Kuhnert, Maurice Kettner, Georg Maul
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Patent number: 7730879Abstract: A voltage transformer circuit for supplying ignition power to a spark plug includes a transformer, a primary circuit, and a secondary circuit. The primary circuit is coupled with the secondary circuit via the transformer in order that, when a transistor switch is closed, power is transmitted from the primary circuit into the secondary circuit. The primary circuit includes a discharge path, for demagnetizing the transformer when the transistor switch is open and via which power can be retransmitted from the secondary circuit for shortening the duration of an arc discharge, and the discharge path forms a demagnetizing current with a primary side of the transformer.Type: GrantFiled: August 19, 2006Date of Patent: June 8, 2010Inventors: Georg Maul, Dieter Kuhnert, Gerhard Koerner
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Publication number: 20100001626Abstract: The invention relates to a spark plug for igniting a combustible gas mixture in an internal combustion engine, comprising an ignition electrode (4), an electrical supply line (5), to which the ignition electrode (4) is connected, an insulator body (6), through which the supply line (5) is passed, a housing head (2), which rests in sealing fashion on the insulator body (6) and bears an outer thread (3) for the purpose of screwing it into an internal combustion engine, a tube housing (9), which is fixed on the housing head (2), surrounds the insulator body (6) and has a hexagon head (13). The invention provides that the tube housing (9) surrounds an insulator body holder (7), which is welded to the housing head (2) and presses the insulator body (6) with a prestress against the housing head (2).Type: ApplicationFiled: August 13, 2007Publication date: January 7, 2010Inventors: Georg Maul, Dieter Kuhnert
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Publication number: 20090255500Abstract: A spark plug for igniting a combustible gas mixture in an internal combustion engine includes an ignition electrode with an electrical supply line is connected thereto. A pipe housing is provided for enclosing the electrical supply line and a venting channel is provided for discharging combustion gases from the pipe housing. The venting channel provides for discharging combustion gases infiltrating the spark plug as leakage gases run along the supply line.Type: ApplicationFiled: November 29, 2006Publication date: October 15, 2009Inventors: Georg Maul, Reinhard Latsch, Dieter Kuhnert
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Publication number: 20090139504Abstract: A voltage transformer circuit for supplying ignition power to a spark plug includes a transformer, a primary circuit, and a secondary circuit. The primary circuit is coupled with the secondary circuit via the transformer in order that, when a transistor switch is closed, power is transmitted from the primary circuit into the secondary circuit. The primary circuit includes a discharge path, for demagnetizing the transformer when the transistor switch is open and via which power can be retransmitted from the secondary circuit for shortening the duration of an arc discharge, and the discharge path forms a demagnetizing current with a primary side of the transformer.Type: ApplicationFiled: August 19, 2006Publication date: June 4, 2009Inventors: Georg Maul, Dieter Kuhnert, Gerhard Koerner
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Patent number: 5554908Abstract: A precombustion chamber ignition device for preferably lean fuel-air mixtures and having a precombustion chamber. This precombustion chamber contains a electrode carrier extending into the precombustion chamber and on it at least one ignition electrode is attached, which has at least one ignition portion, which cooperates with a internal wall surface of the precombustion chamber in defining at least one spark gap extending substantially athwart the longitudinal axis of the precombustion chamber. In this respect the internal wall surface acts as a ground electrode. The ignition portion of the at least one ignition electrode is offset in relation to the longitudinal axis of the precombustion chamber and is arranged essentially parallel to the wall surface, which is substantially cylindrical in the spark gap portion, of the precombustion chamber close to the wall surface.Type: GrantFiled: March 28, 1995Date of Patent: September 10, 1996Inventors: Dieter Kuhnert, Reinhard Latsch
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Patent number: 4925463Abstract: The invention concerns an exhaust gas cleaning system for Diesel engines with a filtration device for separating soot from the exhaust gases and a regeneration device for the filtration device. The filtration device is equipped with filter tubes which are closed at one end. Thus, the exhaust gases can be fed in at the other side and penetrate the filter walls. The soot is deposited on the inner surface of the filter tubes. A burner is provided which generates the burn-off gases for the soot, suitable measures being taken to ensure that the burner gases only act on one section of the filter block at a time. Feed and discharge of the exhaust gases are selected in such a way that the cleaned exhaust gases flow around the filter tubes which are being regenerated. The direction of flow of the exhaust gases can also be reversed so that the exhaust gases first flow around the filter tubes passing through the walls into the tube interiors, and then flow out to the discharge through the openings in the tubes.Type: GrantFiled: January 30, 1989Date of Patent: May 15, 1990Inventor: Dieter Kuhnert
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Patent number: 4892070Abstract: A method and a spark plug construction to ignite very lean fuel air mixtures with the aid of an ignition chamber with separate ignition, which is arranged in the main combustion chamber of an internal combustion engine, connected to the main combustion chamber 20 through transfer channels 21. Transfer channels may be provided which proceed tangentially, whereby rich fuel air admixtures or additional fuel is brought, valve timed, to the area of at least one transfer channel 21 outside the ignition chamber through a supply channel 24. During a compression stroke the very lean mixture in the main combustion chamber is pressed into the ignition chamber 16 through the transfer channels, which results in a very good intermixing with the additional fuel or the admixture due to the turbulent movement through the transfer channels 21 and the long path to the spark gap. This guarantees a very safe ignition.Type: GrantFiled: March 28, 1988Date of Patent: January 9, 1990Inventor: Dieter Kuhnert
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Patent number: 4262611Abstract: A method of and installation for incineration of solid and, if desired, liquid waste. The installation comprises a pyrolysis chamber and connected directly therebelow a combustion chamber. Exhaust gas ducts which cover the outer walls of the pyrolysis chamber either partly or completely in such a way that the covered wall surfaces of the pyrolysis chamber serve as the inner walls of the exhaust gas ducts. One or more swivelling gate elements which when moved create passages of different cross-sections through which solid and gaseous products from the pyrolysis process are discharged from the pyrolysis chamber into the combustion chamber. Combustion air supply inlets are arranged in flow direction behind the gate elements.Type: GrantFiled: September 20, 1979Date of Patent: April 21, 1981Assignee: Kraftanlagen AktiengesellschaftInventors: Dieter Kuhnert, Lothar Meiler, Herbert Rebholz, Gunter Zapf
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Patent number: 4156394Abstract: Ducts for carrying off hot gas given off from the combustion chamber of an incinerator are built into the outer walls of a pyrolysis chamber located above the combustion chamber. The pyrolysis chamber has cross-sectional dimensions that are small enough to assure that heat from the gas ducts in walls completely penetrate the fill of waste in the pyrolysis chamber. Sluice gates are provided between the pyrolysis chamber and the combustion chamber on which the fill of the pyrolysis chamber rests when the gates are quiescent. The gates are moved to allow fragments of the pyrolysis products to drop into the combustion chamber or to turn over material resting on the gates.Type: GrantFiled: November 28, 1977Date of Patent: May 29, 1979Assignees: Kernforschungs Anlage Julich GmbH, Kraftanlagen AktiengesellschaftInventors: Heinz Mallek, Dieter Kuhnert, Friedrich Scholz
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Patent number: 4156393Abstract: Sluice gate members mounted for swinging movement about a shaft offset from the center of a furnace and arranged to be moved both gradually and discontinuously are interposed between an upper pyrolysis and precombustion chamber and a lower afterburning chamber. The movement of these sluice gate members causes particles of the fire bed supported on them to drop down into the afterburning chamber, largely in the form of embers, at about the same rate as additional waste material is added to the fire bed, so as to maintain a fire bed of approximately constant size. The sluice gate members are hollow and secondary air is blown into them near the shafts on which they are mounted and flows out through holes on their bottom surfaces and in their facing tip edges and then proceeds downward to contribute to the afterburning process.Type: GrantFiled: July 18, 1977Date of Patent: May 29, 1979Assignee: Kraftanlagen AktiengesellschaftInventors: Heinz Mallek, Dieter Kuhnert, Friedrich Scholz