Apparatus for igniting a fuel mixture, transmission element for transmitting a high-voltage ignition voltage, ignition device, and circuit device

A transmission element for transmitting a high ignition voltage from an ignition system to a spark plug, comprising:

• a high-voltage conductor which is guided in an insulation element, and wherein the high-voltage conductor is at least partially an electrically conductive spring that has a longitudinal axis;
• an electrically conductive shielding element which encompasses the electrically conductive spring in an electromagnetic shielding manner along a section of the electrically conductive spring's longitudinal axis;
• and wherein
• the electrically conductive shielding element is arranged and embodied so that the electrically conductive shielding element encompasses at least a portion of a longitudinal axis of the insulation element and on an outside of the insulation element;
• and wherein
• the electrically conductive shielding element is at least partially formed by metallization of the insulation element or a coating of the insulation element;
• and wherein
• the insulation element has at least one recess or at least one depression that is not metalized or coated, so that at least one of non-metallized/non-coated recesses/depressions are formed on the surface of the insulation element.

An ignition device for generating a high ignition voltage, comprising:

• a circuit device having a circuit for superimposing a high-frequency signal on the high ignition voltage;
• and
• a transmission element to transmit the high ignition voltage on which the high-frequency signal is superimposed to a spark plug, the transmission element having
• a high-voltage conductor which is guided in an insulation element, and wherein the high-voltage conductor is at least partially an electrically conductive spring that has a longitudinal axis;
• an electrically conductive shielding element which encompasses the electrically conductive spring in an electromagnetic shielding manner along a section of the electrically conductive spring's longitudinal axis;
• and wherein
• the electrically conductive shielding element is arranged and embodied so that the electrically conductive shielding element encompasses at least a portion of a longitudinal axis of the insulation element and on an outside of the insulation element;
• and wherein
• the electrically conductive shielding element is at least partially formed by metallization of the insulation element or a coating of the insulation element;
• and wherein
• the insulation element has at least one recess or at least one depression that is not metalized or coated, so that at least one of non-metallized/non-coated recesses/depressions are formed on the surface of the insulation element.

A circuit device for superimposing a high-frequency signal on a high ignition voltage, comprising:

• a transmission element that has,
• a high-voltage conductor which is guided in an insulation element, and wherein the high-voltage conductor is an electrically conductive spring that has a longitudinal axis, and
• an electrically conductive shielding element which encompasses the electrically conductive spring in an electromagnetic shielding manner along a section of the electrically conductive spring's longitudinal axis, and
• wherein the electrically conductive shielding element encompasses at least a portion of a longitudinal axis of the insulation element and on an outside of the insulation element;
• and wherein
• the electrically conductive shielding element is at least partially formed by metallization of the insulation element or a coating of the insulation element;
• and wherein
• the insulation element has at least one recess or at least one depression that is not metalized or coated, so that at least one of non-metallized/non-coated recesses/depressions are formed on the surface of the insulation element;
• and
• the high-voltage conductor transmits the high ignition voltage on which the high-frequency signal is superimposed to the spark plug.