Method of suppressing a pinging phenomenon affecting the operation of an internal combustion engine
US5531201A · kind A · utility
3Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 1994 |
| Grant date | Jul 2, 1996 |
| Priority date | — |
| Expiry date | Sep 19, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The instantaneous energy of the pinging phenomenon is measured, a quantity (R.sub.i) dependent on the instantaneous value of this same measurement is calculated, a sliding average value (R.sub.m) of the quantity (R.sub.i) weighted by a forget factor is calculated and a correction (R.sub.A) of the ignition advance angle is calculated from an inference engine marshalling "fuzzy" logic rules enabling the membership class of (R.sub.a) to be established from those of (R.sub.i) and of (R.sub.m).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.