Apparatus and method for measuring alcohol concentration of liquid blended with alcohol applicable to an automotive vehicle mounted internal combustion engine
US5488311A · kind A · utility
9Cited by
9References
11Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Aug 10, 1994 |
| Grant date | Jan 30, 1996 |
| Priority date | — |
| Expiry date | Aug 10, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/2852
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The electrodes of an electrostatic capacitor which is used to determine the alcohol concentration in a mixture of gasoline and alcohol, are connected with a frequency oscillator of the LC type which applies a signal having a frequency which is equal to or greater than 10 MHz. The setting of the oscillation frequency to 10 MHz or more eliminates the amount of change in electrode loss and enables stable and accurate alcohol concentration determination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.