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US 12,237,650 B2Granted
Spark plug resistance element and spark plug
AssigneeRobert Bosch GmbH
InventorsHubertus Braun, Benedikt Reinsch, Carsten Kuenzel, Corinna Vonau, Helene Kasjanow, Stefan Nufer
Life of this patent
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Abstract
A spark plug resistance element that includes at least one inorganic amorphous oxide and at least one first inorganic crystalline oxide having a relative dielectric permittivity of at most 15. A spark plug that includes at least one spark plug resistance element is also described.
Claims28
A spark plug resistance element, comprising:
- at least one inorganic amorphous oxide and at least one first inorganic crystalline oxide having a relative dielectric permittivity of at most 15;
- wherein the spark plug resistance element include x mass % ZrO2, y mass % ZnO, and z mass % SnO2, where 0<x<0.99*c, 0<y<c and 0<z<c, where c=20 to 100 mass %, relative in each case to a total mass of the spark plug resistance element, and x+y+z=c.
A spark plug resistance element, comprising:
- at least one inorganic amorphous oxide and at least one first inorganic crystalline oxide having a relative dielectric permittivity of at most 15;
- wherein the spark plug resistance element includes x mass % ZrO2, y mass % ZnO, and z mass % SnO2, where 0<x<0.99*c, 0<y<c and 0<z<c, where c=40 to 80 mass %, relative in each case to a total mass of the spark plug resistance element, and x+y+z=c.
A spark plug, comrpising:
- a spark plug resistance element including at least one inorganic amorphous oxide and at least one first inorganic crystalline oxide having a relative dielectric permittivity of at most 15;
- wherein the spark plug resistance element includes x mass % ZrO2, y mass % ZnO, and z mass % SnO2, where 0<x<0.99*c, 0<y<c and 0<z<c, where c=20 to 100 mass %, relative in each case to a total mass of the spark plug resistance element, and x+y+z=c.
A spark plug, comprising:
- a spark plug resistance element including at least one inorganic amorphous oxide and at least one first inorganic crystalline oxide having a relative dielectric permittivity of at most 15;
- wherein the spark plug resistance element includes x mass % ZrO2, y mass % ZnO, and z mass % SnO2, where 0<x<0.99*c, 0<y<c and 0<z<c, where c=40 to 80 mass %, relative in each case to a total mass of the spark plug resistance element, and x+y+z=c.
Dependencies are inferred from the claim text.