Spark plug having firing pad
US9041274B2 · kind B2 · utility
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30References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2014 |
| Grant date | May 26, 2015 |
| Priority date | — |
| Expiry date | Jan 28, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T13/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A spark plug has a shell, an insulator, a center electrode, a ground electrode, and a firing pad. The firing pad is made of a precious metal material and is attached to the ground electrode. The firing pad has a side surface at a peripheral edge that can be flush or nearly flush with a free end surface of the ground electrode. This construction can help improve ignitability and flame kernel growth of the spark plug during a sparking event, and can provide better thermal management at the attached ground electrode and firing pad.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.