Ignition coil with secondary winding center tap connected to shield
US7268655B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2004 |
| Grant date | Sep 11, 2007 |
| Priority date | — |
| Expiry date | Oct 28, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F30/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A distributorless ignition coil has two high voltage secondary windings wound around a primary winding, with each secondary winding being electrically connected to a respective spark plug. A shield surrounds the secondary windings. The secondary windings share a common center tap between them, and the center tap is electrically connected to the shield, which thus acts as a conductor to convey current back to an end of the shield that conveniently may be connected to ignition components to complete the electrical path, thus obviating the need for an interior wire extending from the center tap inside the coil to the end of the coil case.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.