Pre-ignition detector
US6360587B1 · kind B1 · utility
26Cited by
12References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 10, 2000 |
| Grant date | Mar 26, 2002 |
| Priority date | — |
| Expiry date | Aug 10, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P2017/125
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An apparatus for detecting a pre-ignition combustion condition in an internal combustion engine. An ion sensing circuit measures an ion current during the ignition coil charging time. An ion current level above a predetermined reference level indicates pre-ignition combustion. A powertrain control module is responsive to a pre-ignition signal for discontinuing delivery of fuel to the cylinder in which the ion current was measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.