Apparatus and method for measuring alcohol concentration of liquid blended with alcohol applicable to an automotive vehicle mounted internal combustion engine
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United States of America Patent
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Jan 30, 1996
Issued Date -
N/A
app pub date -
Aug 10, 1994
filing date -
May 30, 1990
priority date (Note) -
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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.
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