Multipoint spark plug and multipoint spark plug manufacturing method
US9742160B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 25, 2017 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Jan 25, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01T13/18
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A multipoint spark plug includes side electrodes provided in a pair so as to extend in a lengthwise direction of a tip end portion via a gap, and an intermediate electrode provided in the gap between the pair of side electrodes such that a plurality of ignition gaps are formed in the lengthwise direction of the tip end portion. An electrode holding portion is formed from separate parts that hold the side electrodes and the intermediate electrode, respectively, so as to insulate the side electrodes and the intermediate electrode from the main body portion, and the respective parts thereof project into the combustion chamber from the tip end portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.