Device for use in the ultrasonic measurement of mass flow of gas
US4014210A · kind A · utility
3Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 8, 1976 |
| Grant date | Mar 29, 1977 |
| Priority date | — |
| Expiry date | Apr 8, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/662
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a device for measuring ultrasonically the flow of gas, for example the air flow in the induction duct of an internal combustion engine, an upstream piezo-electric transducer is located in a plenum chamber upstream of a measurement duct and a downstream piezoelectric transducer is located in a seating in the measurement duct. To reduce vorticity in the gas flow the upstream transducer is seated at the apex of a frusto-conical element in the inlet chamber and the seating of the downstream transducer is tapered externally.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.