Diagnosis of the fouling condition of sparkplugs in a radiofrequency ignition system
US8316832B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2008 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Dec 6, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/006
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A radiofrequency ignition device including: a control capable of generating an ignition control signal; a supply circuit controlled by the ignition control signal for applying a supply voltage on an output interface of the supply circuit at a frequency defined by the control signal; at least one plasma generation resonator connected on an output interface of the supply circuit and capable of generating a spark between two ignition electrodes of the resonator upon an ignition control; a mechanism measuring an electric parameter representative of a variation in a supply voltage of the resonator; and a module determining the fouling condition of the electrodes based on the measured electric parameter and on a predetermined reference value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.