Spark plug connecting element and spark plug

Patent metadata

Field	Value
Publication number	US-11527871-B2
Application number	US-202017427267-A
Country	US
Kind code	B2
Filing date	Jan 24, 2020
Priority date	Feb 7, 2019
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

A spark plug connecting element. The spark plug connecting element includes a first contact element and a second contact element. A resistor element is situated between the first contact element and the second contact element. The first contact element and the second contact element have a specific conductivity of 10 2 S/m to 10 8 S/m and the resistor element has a specific conductivity of 10 −3 S/m to 10 1 S/m.

First claim

What is claimed is:

1. A spark plug connecting element, comprising:
a first contact element;
a second contact element; and
a resistor element situated between the first contact element and the second contact element;
wherein the first contact element and the second contact element have a specific conductivity of 10 2 S/m to 10 8 S/m, and the resistor element have a specific conductivity of 10 −3 S/m to 10'S/m.

2. The spark plug connecting element as recited in claim 1 , wherein the first contact element and/or the second contact element and/or the resistor element is free of metals and carbonaceous compounds.

3. The spark plug connecting element as recited in claim 1 , wherein the first contact element and/or the second contact element and/or the resistor element is free of inorganic, nonoxidic, electrically conductive material, metals, and alloys.

4. The spark plug connecting element as recited in claim 1 , wherein the first contact element and/or the second contact element and/or the resistor element are made up of at least one first oxide and at least one additive, a total content of the additive with respect to a total mass of the first contact element and/or the second contact element and/or the resistor element being less than 5 mass percent.

5. The spark plug connecting element as recited in claim 1 , wherein the first contact element and/or the second contact element and/or the resistor element are made up of at least one first oxide and at least one additive, a total content of the additive with respect to a total mass of the first contact element and/or the second contact element and/or the resistor element being less than 0.5 mass percent.

6. A spark plug connecting element, comprising:
a first contact element;
a second contact element; and
a resistor element situated between the first contact element and the second contact element;
wherein the first contact element and/or the second contact element and/or the resistor element containing at least one first oxide selected from a group made up of: (i) oxides of the following formula:
M 1-x D x O 2

M being selected from Ti, Zr, Sn and combinations of Ti, Zr, Sn, D being selected from V, Nb, Ta, P, As, Sb, Bi and combinations of V, Nb, Ta, P, As, Sb, Bi, and 0<x<0.5, and/or (ii) oxides of the following formula:
Zn 1-y Q y O,

Q being selected from Al, Ga, In, B, Ti, Zr, Hf, Si, Ge, Sn and combinations of Al, Ga, In, B, Ti, Zr, Hf, Si, Ge, Sn, and 0<y<0.5, and/or (iii) oxides selected from the group made up of: ZrO 2-r , TiO 2-r , SnO 2-r , ZnO 1-r , HfO 2-r , V 2 O 5-r , Nb 2 O 5-r , and Ta 2 O 5-r , where 0.5>r≥0.

7. The spark plug connecting element as recited in claim 6 , wherein the first contact element and/or the second contact element and/or the resistor element is free of metals and carbonaceous compounds.

8. The spark plug connecting element as recited in claim 6 , wherein the first contact element and/or the second contact element and/or the resistor element contains at least one second oxide, which is an inorganic, amorphous oxide.

9. The spark plug connecting element as recited in claim 8 , wherein the second oxide is a silicate glass.

10. The spark plug connecting element as recited in claim 8 , wherein the first contact element and/or the second contact element and/or the resistor element contains at least one third oxide, which is a crystalline oxide selected from ZrO 2 , TiO 2 , Al 2 O 3 and mixtures of ZrO 2 , TiO 2 , Al 2 O 3 .

11. The spark plug connecting element as recited in claim 6 , wherein a total content of the first oxide in the first contact element and/or in the second contact element and/or in the resistor element is maximally 100 mass percent, with respect to a total mass of the first contact element and/or the second contact element and/or the resistor element.

12. The spark plug connecting element as recited in claim 6 , wherein a total content of the first oxide in the first contact element and/or in the second contact element and/or in the resistor element is 40 mass percent to 95 mass percent with respect to a total mass of the first contact element and/or the second contact element and/or the resistor element.

13. The spark plug connecting element as recited in claim 6 , wherein a total content of the first oxide in the first contact element and/or in the second contact element and/or in the resistor element is 60 mass percent to 85 mass percent with respect to a total mass of the first contact element and/or the second contact element and/or the resistor element.

14. The spark plug connecting element as recited in claim 8 , wherein a total content of the second oxide in the first contact element and/or in the second contact element and/or in the resistor element is more than 0 mass percent to 75 mass percent with respect to a total mass of the first contact element and/or the second contact element and/or the resistor element.

15. The spark plug connecting element as recited in claim 8 , wherein a total content of the second oxide in the first contact element and/or in the second contact element and/or in the resistor element is more than 0 mass percent to 45 mass percent with respect to a total mass of the first contact element and/or the second contact element and/or the resistor element.

16. The spark plug connecting element as recited in claim 8 , wherein a total content of the second oxide in the first contact element and/or in the second contact element and/or in the resistor element is more than 20 mass percent to 40 mass percent with respect to a total mass of the first contact element and/or the second contact element and/or the resistor element.

17. The spark plug connecting element as recited in claim 8 , wherein a total content of the second oxide in the first contact element and/or in the second contact element and/or in the resistor element is more than 28 mass percent to 38 mass percent with respect to a total mass of the first contact element and/or the second contact element and/or the resistor element.

18. The spark plug connecting element as recited in claim 10 , wherein a total content of the third oxide in the first contact element and/or in the second contact element and/or in the resistor element is more than 0 mass percent to 20 mass percent, with respect to a total mass of the first contact element and/or the second contact element and/or the resistor element.

19. The spark plug connecting element as recited in claim 10 , wherein a total content of the third oxide in the first contact element and/or in the second contact element and/or in the resistor element is more than 2 mass percent to 10 mass percent, with respect to a total mass of the first contact element and/or the second contact element and/or the resistor element.

20. The spark plug connecting element as recited in claim 10 , wherein a total content of the third oxide in the first contact element and/or in the second contact element and/or in the resistor element is more than 3 mass percent to 5 mass percent, with respect to a total mass of the first contact element and/or the second contact element and/or the resistor element.

21. A spark plug comprising a spark plug connecting element, the spark plug connecting element including:
a first contact element;
a second contact element; and
a resistor element situated between the first contact element and the second contact element;
wherein the first contact element and the second contact element have a specific conductivity of 10 2 S/m to 10

Assignees

• Bosch Gmbh Robert

Inventors

• Reinsch Benedikt
• Kuenzel Carsten
• Vonau Corinna
• Braun Hubertus
• Nufer Stefan

Classifications

• C04B2237/40

  Metallic · CPC title

• C04B35/488

  Composites · CPC title

• H01T21/02

  of sparking plugs · CPC title

• C04B35/486

  Fine ceramics · CPC title

• C04B2237/34

  Oxidic · CPC title