EP3830407A1 - Vorrichtung zur zündung eines kraftstoffgemisches, übertragungselement zur übertragung einer hochvolt-zündspannung, zündeinrichtung und schaltungseinrichtung - Google Patents
Vorrichtung zur zündung eines kraftstoffgemisches, übertragungselement zur übertragung einer hochvolt-zündspannung, zündeinrichtung und schaltungseinrichtungInfo
- Publication number
- EP3830407A1 EP3830407A1 EP19749661.5A EP19749661A EP3830407A1 EP 3830407 A1 EP3830407 A1 EP 3830407A1 EP 19749661 A EP19749661 A EP 19749661A EP 3830407 A1 EP3830407 A1 EP 3830407A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- voltage
- shielding element
- spark plug
- shielding
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/02—Details
- H01T13/04—Means providing electrical connection to sparking plugs
- H01T13/05—Means providing electrical connection to sparking plugs combined with interference suppressing or shielding means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P13/00—Sparking plugs structurally combined with other parts of internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P9/00—Electric spark ignition control, not otherwise provided for
- F02P9/002—Control of spark intensity, intensifying, lengthening, suppression
- F02P9/007—Control of spark intensity, intensifying, lengthening, suppression by supplementary electrical discharge in the pre-ionised electrode interspace of the sparking plug, e.g. plasma jet ignition
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
- H01T13/38—Selection of materials for insulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
- H01T13/00—Sparking plugs
- H01T13/40—Sparking plugs structurally combined with other devices
- H01T13/41—Sparking plugs structurally combined with other devices with interference suppressing or shielding means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P15/00—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits
- F02P15/08—Electric spark ignition having characteristics not provided for in, or of interest apart from, groups F02P1/00 - F02P13/00 and combined with layout of ignition circuits having multiple-spark ignition, i.e. ignition occurring simultaneously at different places in one engine cylinder or in two or more separate engine cylinders
Definitions
- the invention relates to a device for igniting a fuel mixture, in particular a fuel-air mixture, with an ignition system for generating a high-voltage ignition voltage and with a spark plug arranged in an engine block and a transmission element, comprising a high-voltage conductor, which is guided in an insulation element , to transmit the ignition voltage to the spark plug.
- the invention also relates to a transmission element for transmitting a high-voltage ignition voltage from an ignition system to a spark plug, comprising a high-voltage conductor, which element is guided in an Isolationsele.
- the invention further relates to an ignition device for generating a high-voltage ignition voltage. Furthermore, the invention also relates to a circuit device.
- Devices for igniting a fuel mixture, in particular a fuel-air mixture, in various designs are known from the prior art.
- the aim is to further improve the combustion process in the combustion chamber of the engine, in particular an internal combustion engine with spark ignition by spark plugs, also known as a gasoline engine.
- the fuel-air mixture introduced into the combustion chamber or a cylinder is usually compressed by a piston moving in the combustion chamber. Shortly before reaching a top dead center, a spark from a spark plug ignites the fuel-air mixture.
- an ignition system or an ignition coil transforms the battery voltage of a vehicle to the desired ignition voltage in order to provide a high-voltage ignition voltage.
- the ignition voltage is then applied to the spark plug via the ignition line or a high-voltage conductor.
- the ignition voltage is usually applied via a connecting bolt, which is insulated from the outside, for example by a candle insulator, in order to provide the ignition voltage on a so-called center electrode.
- the ignition spark then jumps from the center electrode to a ground electrode and thereby overcomes the spark gap or the distance between the two electrodes.
- the ground electrode is generally electrically conductive, usually via a thread, connected to the engine block or the cylinder head.
- the high-voltage conductor which transmits the high-voltage ignition voltage from the ignition system to the spark plug, is usually guided in an insulation element which surrounds or surrounds the high-voltage conductor on the outside.
- DE 20 2012 004 602 U1 which describes a high-frequency plasma ignition device for an internal combustion engine, in particular for igniting a fuel-air mixture in a combustion chamber of an internal combustion engine using a series oscillating circuit.
- the present invention has for its object to further improve a device for igniting a fuel mixture with an ignition system for generating a high-voltage ignition voltage and a spark plug arranged in a motor block in order to further optimize the combustion process, in particular in a gasoline engine.
- the present invention is also based on the object of providing an improved transmission element for transmitting a high-voltage ignition voltage from an ignition system to a spark plug.
- the present invention has for its object to provide a circuit device which makes it possible to further improve the ignition of a fuel mixture in a combustion chamber of an internal combustion engine in order to further optimize the combustion process, in particular in a gasoline engine.
- the object is achieved with respect to the device for igniting a fuel mixture, in particular egg nes fuel-air mixture, by the features of claim 1.
- the object is achieved with respect to the transmission element to be created by the features of claim 11.
- the object is achieved with regard to the ignition device to be created for generating a high-voltage ignition voltage by the features of claim 20 and with regard to the circuit device to be created by the features of claim 21.
- the device for igniting a fuel mixture in particular a fuel-air mixture, an ignition system for generating a high-voltage ignition voltage and a circuit device comprising a circuit for superimposing the high-voltage ignition voltage with a high-frequency signal.
- the device further comprises a spark plug arranged in an engine block and a transmission element, comprising a high-voltage conductor, which is guided in an isolating element, for transmitting the high-voltage ignition voltage superimposed with the high-frequency signal to the spark plug.
- the spark plug is preferably located in a shaft within the metallic engine block.
- the device can optionally also have a plurality of spark plugs and, accordingly, a plurality of transmission elements.
- an electrically conductive shielding element which comprises the high-voltage conductor at least along a portion of its longitudinal axis in an electromagnetically shielding manner, the shielding element being electrically conductively connected to a ground potential of the circuit device, and the shielding element being a connection between the ground potential of the circuit device and a ground electrode Produces spark plug.
- the high-voltage ignition voltage (HV pulse) generated by the ignition system is superimposed with a high-frequency signal.
- the high frequency signal can be generated by a high frequency generator.
- High-frequency generators for generating a high-frequency signal are generally known from the prior art.
- the high-frequency signal can be generated in the context of the invention by the circuit device, but also externally, and transmitted to the circuit device, in particular to the circuit of the circuit device.
- the fact that the high-voltage ignition voltage is superimposed by a high-frequency signal results in an advantageous combustion in the combustion chamber of the internal combustion engine by means of an ignition spark and a subsequent plasma process.
- the high-voltage ignition voltage or the high-voltage pulse (hereinafter also referred to as HV pulse) and the superimposed high-frequency signal (hereinafter also referred to as RF signal) can be generated in a common circuit device. In principle, however, it is also possible to generate the high-voltage ignition voltage and / or the high-frequency signal separately and to supply the circuit device or to superimpose the high-voltage ignition voltage in the circuit device with the high-frequency signal.
- the coupling or the superimposition of the high-voltage ignition voltage can be done with basically known methods.
- the high-voltage ignition voltage can preferably be generated with the aid of an ignition coil.
- the ignition coil and the means for coupling a high-frequency signal into the high-voltage ignition voltage can be designed as parts of the circuit device.
- the high-voltage ignition voltage can also be generated outside the circuit device and transmitted to the circuit device, for example, by means of a cable or a (high-voltage) lead.
- the circuit device therefore has a circuit for superimposing the high-voltage ignition voltage with a high-frequency signal.
- the device has the transmission element already mentioned.
- the transmission element has a high-voltage conductor, which is guided in an insulation element.
- the electrically conductive shielding element then comprises the high-voltage conductor electromagnetically shielding at least along a section of its longitudinal axis. Furthermore, the shielding element is electrically conductively connected to a ground potential of the circuit device and the shielding element establishes a connection between the ground potential of the circuit device and a ground electrode of the spark plug.
- the inventors have recognized that, so that the combustion process in a gasoline engine can be injected by a high-voltage ignition voltage superimposed with a high-frequency signal, it can be essential on the one hand to shield the high-voltage conductor and on the other hand to establish a connection between the ground potential of the circuit device and the ground electrode of the spark plug manufacture. From the shielding element also takes over the shielding of the ignition pulse consisting of the high-voltage ignition voltage and the superimposed high-frequency signal against external interference. Furthermore, it can be advantageous to shield the ignition pulse in such a way that it does not influence adjacent electronics, in particular in order not to disrupt the sensitive electronics, for example in a motor vehicle, or to impair them as little as possible. The inventors have further found that the combustion process is optimized by the fact that the ground potential of the circuit device and the ground electrode of the spark plug are electrically connected to one another.
- ground potential is also referred to simply as "ground”.
- the shielding element establishes equipotential bonding between the ground electrode of the spark plug and the circuit device.
- the shielding element according to the invention prevents or reduces both an electromagnetic radiation from the high-voltage conductor and an electromagnetic radiation into the high-voltage conductor.
- the shielding element according to the invention enables good electromagnetic compatibility (EMC), which leads to the fact that an optimized combustion by a high-voltage ignition voltage with a superimposed high-frequency signal is possible.
- the shielding element preferably completely covers the high-voltage conductor along a section of its longitudinal axis.
- the shielding element has expansion joints, recesses, gaps, incisions or notches in order to move the high-voltage conductor or the transmission element into a radial and / or to enable axial direction, especially for tolerance compensation.
- shielding element is in particular not to be understood in such a way that the shielding must take place completely closed along the axial section. Nevertheless, it is provided in a particularly preferred embodiment that the shielding element completely or closedly encloses the high-voltage conductor along at least a section of its axial length or along at least a section of its longitudinal axis.
- the shielding element comprises the insulation element on the outside at least along a section of its longitudinal axis.
- the shielding element is preferably designed in such a way that it encompasses the high-voltage conductor in that the shielding element surrounds or sheathes the insulation element which receives the high-voltage conductor on the outside.
- the shielding element can be designed as described above to ensure radial mobility. Preferably, however, the shielding element surrounds or completely encloses the isolating element along the axial section. It can be advantageous if the circuit device comprises a circuit housing which electromagnetically shields the circuit.
- the circuit device comprises a circuit housing which receives the circuit and electromagnetic, i. H. shielded electrically and / or magnetically, the high-voltage ignition voltage superimposed with the high-frequency signal is shielded within the circuit device in a particularly suitable manner.
- the shielding element is connected to a ground potential of the circuit housing and / or a ground potential of the circuit. It is particularly preferable if the ground potential of the circuit is connected to the ground potential of the housing. Furthermore, it is preferable, in particular for this embodiment, that the shielding element is connected to the ground potential of the circuit housing.
- the circuit housing may preferably have a through hole into which the shielding element is inserted.
- the shielding element is preferably designed as part of the transmission element.
- the insulation element is made of rubber or a rubber-like material.
- This embodiment has the advantage that the insulation element can also perform the task of a device or a sealing function.
- the insulation element can seal both a hole or a connection to the circuit device, in particular the circuit housing, as well as a connection to the engine block, in particular a shaft in the engine block or a connection point with a cylinder head.
- the design of the insulation element made of rubber or a rubber-like material also has the advantage that the insulation element can compensate for at least slight radial movements.
- the insulation element is preferably designed as a sheath, which surrounds the high-voltage conductor closely or also at a distance, for example in such a way that a tubular passage is formed in the sheath.
- a sheath which surrounds the high-voltage conductor closely or also at a distance, for example in such a way that a tubular passage is formed in the sheath.
- the shielding element encompasses or surrounds only a portion of the longitudinal axis of the insulation element on the outside. It may be advantageous if the shielding element extends to the engine block in order to establish an electrical connection between the ground potential of the circuit device, in particular the circuit housing and the circuit, and the ground electrode of the spark plug via the engine block.
- the shielding element comprises only a portion of the longitudinal axis of the shielding element.
- the axial section preferably begins at a first end of the insulation element, which is preferably connected to the circuit housing, and extends in the direction of the second end of the insulation element, preferably in such a way that an electrical connection is established between the ground potential of the circuit housing and the motor block.
- the shielding element starting from a first end of the insulation element, comprises only a portion of the longitudinal axis of the insulation element on the outside, a ground conductor being continued up to a second end of the insulation element facing the spark plug ,
- This solution has the advantage that, on the one hand, good shielding, in particular shielding for improving the EMC, is provided in the area between the circuit device, in particular a circuit housing, and the engine block, but the connection between the ground potential of the circuit device and the ground electrode is not depends on the engine block. In this case, the ground line, which is continued to a second end of the insulation element facing the spark plug, can provide the electrical connection.
- the engine block itself does not necessarily have to be connected to the spark plug. This increases the design freedom when designing the shaft provided for the spark plug in the engine block.
- the shielding element comprises the insulation element on the outside from a first end to the second end. If necessary, it can be provided that the shielding element at the first and / or at the second end is set back slightly relative to the insulation element, preferably in such a way that at least 90%, preferably 95%, of the central part of the insulation element is surrounded by the shielding element. In this embodiment, however, the insulation element is preferably surrounded by the shielding element over its entire (axial) length. An offset of the shielding element from the insulation element can primarily be advantageous in order to enable a suitable fastening of the transmission element or not to impair the sealing function of the insulation element.
- the shielding element or a ground conductor connected to the shielding element extends to the spark plug in order to establish an electrically conductive connection between the circuit device, in particular the circuit housing and the circuit, and the ground electrode of the spark plug directly via the spark plug.
- connection of the ground electrode to the circuit device, in particular a circuit housing, is thus possible independently of the engine block.
- the high-voltage conductor is at least partially or at least partially designed as an electrically conductive spring.
- An embodiment of the high-voltage conductor at least in sections or partially as a spring, has the advantage that the high-voltage ignition voltage can be transmitted particularly advantageously and reliably with the superimposed high-frequency signal.
- the elasticity of the electrically conductive spring can compensate for manufacturing tolerances in the longitudinal direction of the spring.
- the electrically conductive spring can also compensate for different angles of an angled shaft in the engine block into which the transmission element is inserted.
- the use of an electrically conductive spring is suitable even when the shaft into which the transmission element is accommodated within the engine block does not run at an angle.
- An angular course of the shaft in the engine block is basically optional, but can be particularly suitable.
- the electrically conductive spring is preferably guided in a bore of the insulation element, preferably in an embodiment with a sealing function, in particular in an insulation element made of rubber.
- the electrically conductive spring can also be performed in a different way within the Isolationsele element.
- the insulation element made of rubber or a rubber-like material and the training of the high-voltage conductor as a spring lead in a particularly advantageous manner that manufacturing problems and angular deviations can be compensated.
- the transmission element thus formed is particularly elastic or has an elasticity that is advantageous for the intended purpose.
- the insulation element in addition to the sealing function, in particular in the transition to the circuit housing and in the transition to the engine block, the insulation element also advantageously performs the task of electrical insulation between the electrically conductive spring and the engine block or the circuit housing.
- the configuration according to the invention makes it possible to apply the high-voltage ignition voltage superimposed on the high-frequency signal to the spark plug via the electrically conductive spring, in particular a central electric rode of the spark plug, while in a particularly advantageous manner the ground electrode of the spark plug, to which the spark jumps from the center electrode, is connected to the ground potential of the circuit device, in particular the circuit housing and the circuit.
- This configuration enables the advantageous use of a high-voltage ignition voltage with a superimposed high-frequency signal in order to optimize the combustion process in a combustion chamber.
- the electrically conductive spring can preferably be designed and arranged such that it presses against a suitable coupling unit of the spark plug.
- the solution according to the invention enables an advantageous ground connection of the circuit device, which may have an ignition coil, to the cylinder head of a cylinder of an internal combustion engine.
- the shielding element is at least partially formed by a metallization or a coating of the insulation element.
- the coating or the metallization of the insulation element takes place at least between the circuit device, in particular the circuit housing and the engine block.
- a metallization or a coating has the advantage that it can be implemented simply and reliably. A risk that the metallization or the coating of the insulation element could become brittle if it is stretched or bent too much or due to aging can be reduced if necessary by the fact that the metallization or the coating has gaps.
- the insulation element has at least one recess or depression which is not provided with a metallization or coating and / or that the metallization has gaps, so that non-metallized regions are formed on the surface of the insulation material.
- Forming the insulation element with recesses or depressions, preferably groove-shaped recesses has the advantage that a metallization or a coating can be applied to the outside of the insulation element in a simple manner such that no coating is formed in the recesses. This significantly reduces the brittleness of the metallization or coating.
- the coating is preferably a metallic coating. This is particularly suitable for implementing an electrically conductive connection and also for shielding.
- the metallization or the coating extends over the entire (axial) length of the insulation element, for which purpose reference is made to the above explanations, designs and options.
- one or more Gaps or recesses may be provided, in particular in such a way that the electrical connection between the circuit housing and the spark plug or the ground electrode of the spark plug is not interrupted.
- the insulation element has at least one recess or recess, preferably several recesses or recesses, which extend in the radial or axial direction, if necessary also with a curved course, preferably in the axial direction, the elasticity of the shielding element and thus also the Transmission element can be influenced specifically.
- the shielding element is designed as a sleeve-shaped spring band.
- a spring band wound in the form of a sleeve is also known as an evolution spring.
- a double evolution spring can also be used.
- the design of the shielding element as an evolution spring represents a particularly suitable solution with which good shielding of the high-frequency signal can be achieved.
- the designed as an Evolutfeder shielding element preferably extends only over a part length of the insulation element, preferably such that a distance between the Wegungseinrich device, in particular the circuit housing and the engine block is shielded.
- Evolut springs are also known as buffer springs, coil springs or truncated cone springs. This with respect to known embodiments are also suitable for the formation of the shielding element. With regard to further configurations and variants, reference is made to the above explanations.
- the shielding element can also be designed as a contact spring.
- the Ableungsele element is at least partially designed as a torsion spring.
- the formation of the shielding element as a torsion spring can also have advantages. With regard to the shielding of the high-frequency signal, however, disadvantages may arise from the fact that slots may be created between the individual turns of the torsion spring when there is great expansion.
- the shielding element designed as a torsion spring preferably extends between the circuit device, in particular the circuit housing and the engine block.
- the shielding element is at least partially designed as a spring cage and / or as a spring sleeve.
- the configuration as a "lampion-shaped" spring basket is particularly suitable. H. with a bulge in the middle axial area.
- the shielding element formed by the spring cage preferably extends between the circuit device, in particular a circuit housing, and the engine block.
- the electrically conductive spring can also be designed as a contact spring in any configuration.
- the shielding element is at least partially designed as a closed metal sleeve and / or that the shielding element is at least partially designed as a metal sleeve and / or spring sleeve with recesses.
- the designed as a metal sleeve shielding element is preferably positioned between the Wegungsge housing and the engine block.
- the shielding element can be formed from a mixture of two or more of the variants shown above.
- the shielding element can partially be designed as an evolution spring, in particular between the circuit housing and the engine block, while the shielding element is designed as a metallic coating in the direction of the second end of the insulation element facing the spark plug. Any mixtures that make sense for the respective use are possible here within the scope of the invention.
- the shielding element according to the invention can be designed such that the high-voltage ignition voltage can be transmitted with the superimposed high-frequency signal without interference suppression resistors having to be used.
- the invention also relates to a transmission element for transmitting a high-voltage ignition voltage from an ignition system to a spark plug, comprising a high-voltage conductor, which element is guided in an Isolationsele.
- the high-voltage conductor is at least partially designed as a spring.
- the transmission element has an electrically conductive shielding element, which comprises the spring electromagnetically shielding at least along a portion of its longitudinal axis, the shielding is arranged and designed such that the shielding element comprises at least a portion of the longitudinal axis of the insulation element on the outside.
- the high-voltage conductor is designed entirely as a spring.
- the shielding element preferably comprises the electrically conductive spring, as has already been stated above with regard to the high-voltage conductor or the electrically conductive spring in the context of the device according to the invention.
- the shielding element preferably comprises the spring outside the circuit housing, preferably up to an engine block and possibly also up to the contact with the spark plug.
- the shielding element preferably also shields the transition areas to the circuit housing and the engine block. A shielding by the shielding element within the Wegungsge housing is not usually necessary.
- the high-voltage ignition voltage to be transmitted is preferably a high-voltage ignition voltage which is superimposed with a high-frequency signal, preferably such as has already been carried out with respect to the device according to the invention.
- the invention also relates to an ignition device comprising
- an ignition system for generating a high-voltage ignition voltage
- circuit device comprising a circuit for superimposing the high-voltage
- the invention further relates to a circuit device for superimposing a high-voltage ignition voltage with a high-frequency signal, and with a transmission element with the variants and configurations which have already been described above, in order to transmit the high-voltage ignition voltage superimposed with the high-frequency signal to the spark plug.
- FIG. 1 is an illustration of the device according to the invention with a sectional view of a
- Fig. 2 is a sectional view of the transmission element, having a high-voltage conductor designed as a spring, which is guided in an insulation element, the shielding element being designed as an evolution spring;
- Fig. 3 is a sectional view of the transmission element, having a high-voltage conductor designed as a spring, which is guided in an insulation element, the shielding element being designed as a torsion spring;
- Fig. 4 is a sectional view of the transmission element, having a high-voltage conductor designed as a spring, which is guided in an insulation element, the shielding element being designed as a metallic coating of the insulation element;
- Fig. 5 is a sectional view of the transmission element, comprising a high-voltage conductor designed as a spring, which is guided in an insulation element, the shielding element being designed as a spring cage or spring sleeve;
- Fig. 6 is a sectional view of the transmission element, comprising a high-voltage conductor designed as a spring, which is guided in an insulation element, the shielding element being designed as a metal sleeve or spring sleeve with recesses;
- Fig. 7 is a sectional view of the transmission element, comprising a high-voltage conductor designed as a spring, which is guided in an insulation element, the shielding element being designed as a metallic coating with gaps; and
- FIG. 8 shows an alternative embodiment to FIG. 1, in which a metallic coating of the
- Isolation element extends from the circuit housing to a spark plug.
- an internal combustion engine in particular an internal combustion engine of a motor vehicle and the associated device for igniting a fuel-air mixture in a combustion chamber, in particular a cylinder of the engine, are sufficiently known from the general prior art.
- combustion engines with spark ignition by spark plugs so-called gasoline engines, are also known, in particular also with direct injection.
- FIG. 1 shows a device for igniting a fuel mixture, in particular a fuel-air mixture, with an ignition system 1, shown only in principle, for generating a high-voltage ignition voltage (HV pulse) and a circuit device 2.
- HV pulse high-voltage ignition voltage
- the circuit device 2 comprises a circuit housing 3 and a circuit device 4 for superimposing the high-voltage ignition voltage with a high-frequency signal (HF signal).
- the high-frequency signal is generated by means of a high-frequency generator 5.
- the high-frequency signal generated by the high-frequency generator 5 is conducted via a high-frequency line 5a to the circuit 4.
- the high-voltage ignition voltage generated by the ignition system 1 is also fed to the circuit 4 via a high-voltage supply line 1a.
- the ignition system 1 and / or the high-frequency generator 5 and / or another device for generating the high-voltage ignition voltage or the high-frequency signal can also be integrated into the circuit device 2, in particular into the circuit housing 3 and optionally also into the circuit 4 ,
- the generation of the high-voltage ignition voltage or a corresponding high-voltage pulse and the high-frequency signal can basically take place in any known manner within the scope of the invention.
- a transmission element 6 is also provided which has a high-voltage conductor 7 which is guided in an insulation element 8.
- the high-voltage ignition voltage superimposed by the circuit 4 with the high-frequency signal is applied to the high-voltage conductor 7 of the transmission element 6.
- the transmission element 6 leads to a spark plug 10 arranged in an engine block 9.
- the spark plug 10 can have any structure suitable for igniting a fuel-air mixture. As can be seen from the basic illustration in FIGS. 1 and 8, the spark plug 10 in the exemplary embodiment has a metallic connecting part 11, a ceramic part 12, a flange 13 with an integrated crimp ring for holding the ceramic part 12, a screw thread 14, a center electrode 15 and a ground electrode 16.
- the construction of the spark plug 10 can also deviate, in particular, instead of a central electrode 15 insulated by means of a ceramic part 12, another insulation can also be provided.
- spark plugs and the different variants are known from the prior art.
- the spark plug 10 is located in a shaft of the engine block 9.
- the shaft in the engine block 9 does not have to run at an angle, as shown in the exemplary embodiments, but can have any course, possibly also a non-angled course.
- the spark plug 10 is connected to the engine block 9 in an electrically conductive manner via the screw thread 14.
- the circuit housing 3 is electrically conductive in the exemplary embodiments according to FIGS. 1 and 8, so that the circuit 4 is electromagnetically shielded.
- the circuit 4 can be connected to the circuit housing 3 via a ground line 17, so that the circuit housing 3 and the circuit 4 have the same ground potential.
- the high-voltage conductor is designed as a spring 7.
- the game is not limited to this.
- the design of the high-voltage conductor as a spring 7 is particularly suitable, especially to compensate for tolerances.
- the high-voltage conductor 7 can optionally also be designed such that it is designed as a spring only over part of its longitudinal axis A or (axial) length.
- the insulation element 8 encompasses or encases the spring 7. This can preferably be achieved in that the insulation element 8 has a central bore for receiving the spring 7.
- the insulation element 8 is preferably made of rubber or a rubber-like material, but the exemplary embodiment is not restricted to this.
- the insulation element 8 also fulfills the function of a sealing part or takes over a sealing function.
- the insulation element 8 seals both the transition to the circuit housing 3 and the transition region to the engine block 9, so that no moisture can penetrate.
- the insulation element 8 can be designed accordingly, preferably grooves, for example for positive locking, have a wall of the circuit housing 3 and / or annular extensions, as shown in principle in FIGS. 1 to 8.
- an electrically conductive shielding element 18 is seen or formed before.
- the shielding element 18 comprises and shields the spring 7 at least along a section of the longitudinal axis A of the spring 7.
- the exemplary embodiments according to FIGS. 1 to 7 show that the shielding element 18 only includes the spring 7 in an electromagnetic manner over a part of the axial length or longitudinal axis A.
- the shielding element 18 is preferably designed such that the shielding element 18 comprises the spring 7 to such an extent that the distance d between the circuit housing 3 and the engine block 9 is shielded.
- the shielding element 18 comprises the feet 7 outside of the circuit housing 3 up to the spark plug 10. I.e. the spring 7 is The shielding element 18 encompasses almost the entire length of the circuit housing.
- the shielding element 18 is electrically conductively connected to a ground or to the ground potential of the circuit device 2.
- the shielding element 18 establishes a connection between the ground of the circuit device 2 and the ground electrode 16 of the spark plug 10.
- the shielding element is electrically conductively connected to the circuit housing 3 of the circuit device 2.
- the circuit housing 3 is connected via the ground line 17, as already described, to the circuit 4, so that the circuit 4, the Wegungsgefeldu se 3 and the shielding element 18 have the same ground or the same ground potential.
- the shielding element 18 is designed such that it comprises the insulation element 8 on the outside at least along a section of its longitudinal axis A.
- FIGS. 1 to 7 show that the shielding element 18 comprises the insulation element 8 over a section of its longitudinal axis A.
- the shielding element 18 encompasses the insulation element 8 on the outside over the entire or at least approximately the entire (axial) length.
- the spring 7 is thus, as already described, is accordingly covered and shielded by the shielding element 18.
- the shielding element 18 extends to the engine block 9 in order to establish an electrical connection between the ground of the circuit device 2 and the ground electrode 16 via the engine block 9.
- FIG. 8 shows a variant in which it is provided that the shielding element 18 extends as far as the spark plug 10 in order to establish an electrically conductive connection with the ground electrode 16 of the spark plug 10 directly via the spark plug 10.
- the shielding element 18 is preferably connected to the flange ring 13 and this in turn is connected via the screw thread 14 to the ground electrode 16.
- a ground conductor connected to the shielding element 18 extends to the spark plug 10 in order to have an electrically conductive connection with the ground electrode 16 directly via the spark plug 10 to produce the spark plug 10.
- the shielding element 18 does not have to be continued up to the spark plug 10, as shown in FIG. 8.
- the shield can be provided within the engine block 9 by the engine block 9 or the correspondingly designed shaft for spark plugs, while the ground conductor (not shown) starting from the shielding element 18 provides a connection, preferably via the flange ring 13 and the screw-in winch 14, with the ground electrode 16, so that the ground electrode 16 has the same potential as the circuit device 2.
- the shielding element 18, starting from a first end 8a of the insulation element 8, only surrounds or surrounds a portion of the longitudinal axis A of the insulation element 8 on the outside.
- a ground conductor (not shown in detail) can optionally be continued up to a second end 8b of the insulation element 8 facing the spark plug 10.
- the shielding element 18 extends from a first end 8a to a second end 8b of the insulation element 8.
- the circuit housing 3 is fixed on the engine block 9.
- the circuit housing 3 In the area of the engine block 9 on which the Wegungsgephaseu se 3 is fixed, it can be a cylinder head of the cylinder by the spark plug 10 is inserted.
- a fastening 19 for fixing the circuit housing 3 is shown in principle in FIGS. 1 and 8.
- FIGS. 2 to 7 show different embodiments of the shielding element 18, which can also be used in combination with one another and in each case both for the embodiments shown in principle in FIG. 1 and for the embodiments shown in FIG.
- the shielding element 18 has a spring band 20 wound in the form of a sleeve. This can be an evolution feather.
- a design of the shielding element 18 is also provided such that the connection to the circuit housing 3 or the motor block 9 is shielded accordingly by the shielding element 18, an electrically conductive connection being established with the spring band 20. It can be a part of the spring band 20, but also a metallic sleeve, a metallic coating or the like.
- the connection area of the shielding element 18 to the circuit housing 3 or the motor block 9 is formed as part of the spring band 20 or the Evolut spring.
- FIG. 3 shows an embodiment of the shielding element 18 at least partially as a torsion spring 21.
- the connection to the circuit housing 3 or the motor block 9 can be similar to that shown in FIG. 2.
- the connection area is preferably formed as part of the torsion spring 21.
- the shielding element 18 is designed as a metallization or metallic coating of the insulation element 8.
- the isolati on element 8 along the section shown, in particular between the circuit housing 3 and the motor block 9, is completely metallized or metallized, so that the metallization or the metallic coating is closed all round as a cylinder is trained.
- the insulation element 8 has recesses 22 or depressions which are not provided with a metallization or a metallic coating.
- the recesses 22 do not circulate around the element 8 Isolationsele, but are only partially annular, so that the electromagnetic shielding is affected as little as possible and in particular an electrical connection in the axial direction of the shielding element 18 is maintained.
- the recesses 22 are designed such that the brittleness of the metallization or the metallic coating is reduced when the insulation element 8 is moved radially.
- the metallization or the metallic coating of the insulation element 8 can also extend from the circuit housing 3 to the spark plug 10.
- recesses 22, depressions or general areas can be provided which are not metallized or coated.
- the metallization can have gaps.
- FIG. 5 shows an embodiment in which the shielding element 18 is at least partially designed as a spring basket 23 or as a spring sleeve.
- the spring cage 23 may optionally, as shown in Fig gur 5, have a "lampion-shaped" shape or a central bulge, which preferably rotates completely in a ring shape.
- the shielding element 18 is designed as a metal sleeve 24.
- recesses 25 or punched holes which can preferably extend in the axial direction, preferably curved, to influence or increase the elasticity of the metal sleeve 24.
- FIG. 7 shows an embodiment of the shielding element 18 with a metallization or a metallic coating, the metallization or the metallic coating having gaps 26 in order to influence or increase the elasticity.
- the variants of the shielding elements 18 shown in FIGS. 2 to 7 can be suitably designed, in particular in the connection areas to the circuit housing 3 and / or to the motor block 9, or they can have a different design, if necessary, by which it is ensured that good shielding against moisture, an electrically conductive connection and / or a seal also results in this area.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018118262.7A DE102018118262A1 (de) | 2018-07-27 | 2018-07-27 | Vorrichtung zur Zündung eines Kraftstoffgemisches, Übertragungselement zur Übertragung einer Hochvolt-Zündspannung, Zündeinrichtung und Schaltungseinrichtung |
| PCT/EP2019/070267 WO2020021105A1 (de) | 2018-07-27 | 2019-07-26 | Vorrichtung zur zündung eines kraftstoffgemisches, übertragungselement zur übertragung einer hochvolt-zündspannung, zündeinrichtung und schaltungseinrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3830407A1 true EP3830407A1 (de) | 2021-06-09 |
Family
ID=67544206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19749661.5A Withdrawn EP3830407A1 (de) | 2018-07-27 | 2019-07-26 | Vorrichtung zur zündung eines kraftstoffgemisches, übertragungselement zur übertragung einer hochvolt-zündspannung, zündeinrichtung und schaltungseinrichtung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11588303B2 (de) |
| EP (1) | EP3830407A1 (de) |
| CN (1) | CN112469893A (de) |
| DE (1) | DE102018118262A1 (de) |
| WO (1) | WO2020021105A1 (de) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020129950A1 (en) * | 1996-09-30 | 2002-09-19 | Werner Funk | Combustion initiation device and method for tuning a combustion initiation device |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB398076A (en) * | 1932-01-02 | 1933-09-07 | Gottlieb Steiner | Device for sparking plugs for screening the electro-magnetic waves radiating from the ignition circuit of internal combustion engines |
| DE1902199C3 (de) | 1969-01-17 | 1975-06-05 | Heinz 3414 Hardegsen Baur | Zündkerzenstecker |
| US3686607A (en) | 1971-02-05 | 1972-08-22 | Whitakercable Corp | High frequency shield for spark plug boot having suppression coil therein |
| US3965879A (en) | 1974-03-26 | 1976-06-29 | Brunswick Corporation | Radio frequency interference suppression apparatus |
| US4327702A (en) * | 1979-04-23 | 1982-05-04 | Nissan Motor Co., Ltd. | Plasma jet ignition system with noise suppressing arrangement |
| JP3900053B2 (ja) * | 2002-09-19 | 2007-04-04 | 株式会社デンソー | 内燃機関用点火装置 |
| DE102004056991B4 (de) * | 2004-11-25 | 2008-06-19 | Vogt Electronic Aktiengesellschaft | Bauelement zur Störwellenunterdrückung in Zündanlagen und Verfahren zu dessen Herstellung |
| CN101479900A (zh) * | 2006-05-12 | 2009-07-08 | 能量脉冲科技有限公司 | 复合火花塞 |
| JP4967835B2 (ja) | 2006-12-20 | 2012-07-04 | 株式会社デンソー | プラズマ式点火装置 |
| US7387115B1 (en) * | 2006-12-20 | 2008-06-17 | Denso Corporation | Plasma ignition system |
| TWM379150U (en) * | 2009-11-16 | 2010-04-21 | Top 1 Green Dev Co Ltd | Transmission line structure that can eliminate negative magnetic field-induced electrical impedance |
| US8766095B2 (en) * | 2011-12-12 | 2014-07-01 | Unison Industries, Llc | Ignition lead |
| DE202012004602U1 (de) | 2012-05-08 | 2013-08-12 | Rosenberger Hochfrequenztechnik Gmbh & Co. Kg | Hochfrequenz-Plasmazündvorrichtung |
| JP6293810B2 (ja) * | 2016-03-22 | 2018-03-14 | 日本特殊陶業株式会社 | 点火システム |
-
2018
- 2018-07-27 DE DE102018118262.7A patent/DE102018118262A1/de not_active Withdrawn
-
2019
- 2019-07-26 WO PCT/EP2019/070267 patent/WO2020021105A1/de not_active Ceased
- 2019-07-26 EP EP19749661.5A patent/EP3830407A1/de not_active Withdrawn
- 2019-07-26 US US17/261,425 patent/US11588303B2/en active Active
- 2019-07-26 CN CN201980048755.XA patent/CN112469893A/zh active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020129950A1 (en) * | 1996-09-30 | 2002-09-19 | Werner Funk | Combustion initiation device and method for tuning a combustion initiation device |
Also Published As
| Publication number | Publication date |
|---|---|
| US20210305787A1 (en) | 2021-09-30 |
| US11588303B2 (en) | 2023-02-21 |
| WO2020021105A1 (de) | 2020-01-30 |
| CN112469893A (zh) | 2021-03-09 |
| DE102018118262A1 (de) | 2020-01-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3465849B1 (de) | Zündkerze für eine hochfrequenz-zündanlage | |
| DE69030809T2 (de) | Verbrennungszünder | |
| DE112011102588B4 (de) | Barriereentladungsvorrichtung | |
| DE102010045171A1 (de) | Zünder zum Zünden eines Brennstoff-Luft-Gemisches in einer Verbrennungskammer, insbesondere in einem Verbrennungsmotor, durch Erzeugen einer Korona-Entladung | |
| EP2462340A2 (de) | Zündspule, zündkerze und zündanordnung | |
| DE10143055A1 (de) | Fremdzündungsanordnung mit integrierter Zündkerze und Zündspule | |
| EP2058909B1 (de) | Resonatoranordnung | |
| DE19615375C2 (de) | Elektrischer Verbinder und Zündvorrichtung für eine Brennkraftmaschine | |
| DE19610810A1 (de) | Zündvorrichtung und Steckverbinder für Brennkraftmaschine | |
| DE19743544A1 (de) | Zündeinrichtung für eine Brennkraftmaschine | |
| DE102012210391B4 (de) | Zündvorrichtung | |
| DE1902199C3 (de) | Zündkerzenstecker | |
| DE3041537A1 (de) | Zuendkerze fuer eine brennkraftmaschine | |
| EP3830407A1 (de) | Vorrichtung zur zündung eines kraftstoffgemisches, übertragungselement zur übertragung einer hochvolt-zündspannung, zündeinrichtung und schaltungseinrichtung | |
| WO2017167437A1 (de) | Zündvorrichtung zum zünden eines luft-kraftstoffgemisches in einem brennraum | |
| EP3281264B1 (de) | Zündkerze | |
| DE102006044435A1 (de) | Vorrichtung zur Energiespeicherung und Energietransformierung | |
| DE102016200430A1 (de) | Zündkerze mit einer Kerbe oder einer Nut im Isolator oder im Gehäuse | |
| EP3420615B1 (de) | Vorkammerzündkerze | |
| EP3436686B1 (de) | Zündvorrichtung zum zünden eines luft-kraftstoffgemisches in einem brennraum | |
| EP3830915A1 (de) | Vorrichtung zur zündung eines kraftstoffgemisches, übertragungselement zur übertragung eines zündsignals, zündeinrichtung und schaltungseinrichtung | |
| WO2024002574A1 (de) | Hochvoltschnittstelle | |
| DE3588119T2 (de) | Vorrichtung zum Zünden der Verbrennung eines Kraftstoff-Luftgemisches | |
| DE10143194B4 (de) | Hochfrequenzzündung für Verbrennungskraftmaschinen | |
| DE19805578C1 (de) | Glühstiftkerze |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20201210 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
| 17Q | First examination report despatched |
Effective date: 20220404 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20250201 |