Electronic pinking detector
US4279143A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 26, 1979 |
| Grant date | Jul 21, 1981 |
| Priority date | — |
| Expiry date | Dec 26, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electronic device for detecting and correcting pinking in an internal combustion engine by changing the ignition displacement of the internal combustion engine which comprises a vibration pick-up mounted on the internal combustion engine providing a signal to a band-pass filter for selecting a frequency band corresponding to pinking vibrations and a comparator, the output of which provides a signal for altering the ignition displacement of the engine and the two inputs which receive the output from the band-pass filter after it has undergone different treatments in two parallel channels, one channel comprising an integrator followed by an amplifier and the second channel preferably comprising an integrator, therebeing provided a gate between the band-pass filter and the two channels, which gate is only open for a predetermined angular zone during operation of the internal combustion engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.