Fuel sensor for sensing the mixture ratio of gasoline and methan

Details Fuel sensor for sensing the mixture ratio of gasoline and methan Fuel sensor for sensing the mixture ratio of gasoline and methan

1989-07-14

1990-07-03

Eisenzopf, Reinhard J.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Lumped type parameters

324690, 324449, 324450, 73 611R, G01R 2726, G01N 2722

Patent

active

049394673

ABSTRACT:
A fuel sensor for sensing a mixing ratio of a given liquid in a mixed fuel comprises a housing; a structure housed in the housing, the structure having a fuel passage formed therethrough; and an electrode assembly housed in the housing and held by the structure, the electrode assembly including at least one pair of probe portions which are exposed to the fuel passage. The full sensor also includes an output control circuit housed in the housing, the output control circuit issuing an amplified voltage output which varies in accordance with a small information signal applied to an input portion of the output control circuit; and an electrically conducting member housed in the housing and electrically connecting the electrode assembly to the input portion of the output control circuit, so that the output control circuit issues an amplified voltage output which varies in accordance with a capacitance established between the paired probe portions.

REFERENCES:
patent: 3215900 (1965-11-01), Harvey
patent: 3368147 (1968-02-01), Graham
patent: 3778706 (1973-12-01), Thompson
patent: 4075680 (1978-02-01), Shipp, Jr.
patent: 4540936 (1985-09-01), Walsh
patent: 4711244 (1987-12-01), Kuzara

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