Microwave alcohol fuel sensor
US4453125A · kind A · utility
21Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1982 |
| Grant date | Jun 5, 1984 |
| Priority date | — |
| Expiry date | Jul 13, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N22/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A microwave alcohol fuel sensor comprises a microwave oscillator, a microwave receiver, and a microwave transmission circuit connected to the oscillator and the receiver. The microwave transmission circuit comprises a dielectric substrate and, a strip line mounted on the substrate so that microwaves leak from the substrate to an alcohol gasoline fuel, and the microwaves attenuate by alcohol dielectric loss, whereby output voltage from the receiver corresponds to alcohol content rate. The dielectric substrate is formed tubular so that a constant amount of the fuel is fed the sensor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.