Engine vibration sensor
US4448059A · kind A · utility
13Cited by
3References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1982 |
| Grant date | May 15, 1984 |
| Priority date | — |
| Expiry date | Apr 2, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P15/11
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improvement in an engine vibration sensor of the type including a vibrator set to resonate at a specific frequency of vibration of the engine to which it is attached, for example the engine knocking vibration frequency, wherein the vibration of the vibrator is converted to an electric signal representing the specific engine vibration. The improvement consists of forming the vibrator from a magnetic material and providing a magnetic field generator for applying a magnetic field of controlled intensity to the vibrator, whereby the resonant frequency of the vibrator can be adjusted by varying the intensity of the magnetic field.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.