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| 20120055434 | IGNITER FOR IGNITING A FUEL-AIR-MIXTURE USING HF CORONA DISCHARGE AND ENGINE FITTED WITH SUCH IGNITERS - An igniter for igniting a fuel-air-mixture in a combustion chamber, in particular in a combustion engine with one or several combustion chambers, by generating a high frequency corona discharge, said ignitiger comprising an assembly comprising an ignition electrode, an outer conductor surrounding the ignition electrode, which has a front end and a rear end, and an electrical insulator arranged between the ignition electrode and the outer conductor, wherein the ignition electrode is part of an electrical high-frequency resonant circuit, protrudes over the front end of the outer conductor, and is connected to an alternate current source or alternate voltage source which feeds the HF-resonant circuit, and delivers a high frequency alternate current or a high frequency alternate voltage, respectively. The ignition electrode is branched into more than four electrode branches extending away from the outer conductor, in different directions. | 03-08-2012 |
| 20140116369 | CORONA IGNITION DEVICE AND METHOD FOR PRODUCING AN IGNITION HEAD FOR A CORONA IGNITION DEVICE - The invention relates to a corona ignition device for igniting fuel in a combustion chamber of an engine by means of a corona discharge, comprising an insulator, a center electrode, which plugs into the insulator and carries an ignition head having a plurality of ignition tips, a coil, which is connected to the center electrode, and a housing, which surrounds the coil and into which the insulator plugs, wherein the ignition head has main body formed from sheet metal. In accordance with the invention, the ignition tips consist of a different material compared to the main body and are fastened to a side face of the main body. The invention also relates to an ignition head for such a corona ignition device and to a method for production thereof. | 05-01-2014 |
| 20140116370 | CORONA IGNITION DEVICE AND METHOD FOR PRODUCING AN IGNITION HEAD FOR A CORONA IGNITION DEVICE - The invention relates to corona ignition device for igniting fuel in a combustion chamber of an engine by means of a corona discharge, comprising an insulator, a center electrode, which plugs into the insulator and carries an ignition head having a plurality of ignition needles, and a housing, into which the insulator plugs. In accordance with the invention, the ignition needles and the center electrode plug into the ignition head. The invention also relates to a method for producing an ignition head for a corona ignition device, wherein a green compact of the ignition head is produced by injection molding of metal powder, and the green compact is sintered whilst ignition needles and/or a center electrode plug thereinto. | 05-01-2014 |
| 20140123925 | CORONA IGNITION DEVICE - The invention relates to a corona ignition device for igniting fuel in a combustion chamber of an engine by means of a corona discharge, comprising an insulator, which has a continuous channel, a central electrode, which plugs into the channel of the insulator and leads to at least one ignition tip, a glass seal, which seals in the channel a gap between the central electrode and the insulator, and a housing, into which the insulator plugs. In accordance with the invention, the central electrode has a sealing face, which, together with a sealing face of the insulator, forms a seat, and an annular air gap that is open towards the ignition tip is provided in an end portion of the channel, facing the ignition tip, between the central electrode and the insulator. | 05-08-2014 |
| 20140137845 | CORONA IGNITION DEVICE - The invention relates to a corona ignition device for igniting fuel in an internal combustion engine by means of a corona discharge, comprising a central electrode, an insulator, into which the central electrode plugs, a housing, into which the insulator plugs, a bobbin, onto which a coil which is attached to the central electrode is wound, and a shield cap, which is plugged onto an end portion of the bobbin facing the insulator. According to the invention, a portion of the central electrode protrudes through a bottom of the shield cap, or a circumferential wall of the shield cap has one or more slots, or the shield cap has a circumferential wall, which protrudes only on one side beyond the bottom of the shield cap only on one side. | 05-22-2014 |
| 20140261273 | CORONA IGNITION DEVICE - The invention relates to a corona ignition device for igniting fuel in a combustion chamber of an engine by means of a corona discharge, comprising a tubular housing, a coil arranged in the tubular housing, an insulator, which plugs into the tubular housing, and a center electrode, which is connected to the coil, plugs into the insulator and leads to at least one ignition tip. In order to increase the service life of the ignition tip, said ignition tip consists in part or completely of an iridium-based alloy containing 3 to 30% by weight of rhodium or is coated by a burn-up layer. | 09-18-2014 |
| 20140310947 | METHOD FOR PRODUCING A CORONA IGNITION DEVICE - The invention relates to a method for producing a corona ignition device, in which a center electrode is plugged into an insulator and is connected to a coil, the coil is arranged in a housing tube, a mount for the insulator is fastened to a front end of the housing tube, and a plug connector is fastened to a rear end of the housing tube, and the housing tube is filled with insulating gas. In accordance with this disclosure, the insulating gas is introduced into the housing tube through a bore which is later sealed by welding. In one embodiment, a peg is plugged into the bore to facilitate sealing. In another embodiment, the bore is drilled into the plug connector. | 10-23-2014 |
| 20150075472 | CORONA IGNITION DEVICE - A corona ignition device for igniting fuel in an internal combustion engine by means of a corona discharge. The device comprises a center electrode, an insulator into which the center electrode is inserted, a coil body onto which a coil that is connected to the center electrode is wound, and a shielding cap which is fitted onto an end section of the coil body. The end section faces the insulator. According to this disclosure, the shielding cap comprises one or a plurality of slots. | 03-19-2015 |
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| 20140211365 | CORONA IGNITION DEVICE - The invention relates to corona ignition device comprising a housing, an insulator surrounded by the housing, an inner conductor leading through the insulator to an ignition tip, and a coil connected to the inner conductor, the coil comprising an elongate coil former and a winding formed from wire wound onto the coil former, wherein the coil former comprises at least one indentation filled with adhesive, and the wire crosses the indention such that wire portions which are arranged above the indentation are adhesively bonded to the coil former by means of the adhesive arranged in the indentation. | 07-31-2014 |
| 20140216382 | CORONA IGNITION DEVICE - The invention relates to a corona ignition device for igniting fuel in a combustion chamber of an engine by means of a corona discharge, said corona ignition device comprising an insulator, a center electrode, which is held in the insulator, a housing, in which the insulator is held, and coil turns, which are disposed in a cylindrical main part of the housing and are connected to the center electrode. According to an aspect of this disclosure, the housing widens on the side of the main part remote from the insulator and further coil turns are disposed there, in a wider housing part. | 08-07-2014 |
| 20140328003 | CORONA IGNITION DEVICE AND METHOD FOR PRODUCING A CORONA IGNITION DEVICE - The invention relates to a corona ignition device, comprising a center electrode, an insulator surrounding the center electrode, a coil, which is connected to the center electrode, and a housing pipe, in which the coil is arranged. The housing pipe comprises a substrate layer and a conducting layer arranged radially inwardly of the substrate layer. The conducting layer is made of a material having a greater electrical conductivity than the material of the substrate layer. The conducting layer has a thickness of at least 0.1 mm. Also disclosed is a method for producing a corona ignition device, in which, to produce the housing pipe, an inner pipe is inserted into an outer pipe. The invention also relates to a corona ignition device of which the coil is surrounded by a soft-magnetic shielding. | 11-06-2014 |
