Sparkplug health determination in engine ignition system
US10544773B2 · kind B2 · utility
0Cited by
10References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2016 |
| Grant date | Jan 28, 2020 |
| Priority date | — |
| Expiry date | Jan 24, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P3/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine ignition system for a spark-ignited engine includes a sparkplug and a control system having primary ignition circuitry, secondary ignition circuitry coupled with electrodes of the sparkplug, and sensing circuitry. A control device determines a timing of spark production based on a pattern of varying of an electrical property in the primary ignition circuitry. An inflection point in a sensed current signal may be detected to determine the timing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.