Method for optically detecting gas bubbles moving in a coolant
US5864392A · kind A · utility
109Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1996 |
| Grant date | Jan 26, 1999 |
| Priority date | — |
| Expiry date | Dec 12, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01P5/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
For optical detection of the velocity of gas bubbles in the cooling liquid of an internal combustion engine, light is radiated into the coolant by means of at least one emitter, and the scattered light caused by the gas bubbles, or rather, the change in intensity of light radiation emitted into the coolant, is measured by an optical sensor. The scattered light or intensity change is measured in at least two adjacent areas, and the velocity of the bubbles is determined from the travel time between the measurement signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.