Fuel gauge damper circuit

Details Fuel gauge damper circuit Fuel gauge damper circuit

1988-01-15

1989-06-13

Cuchlinski, Jr., William A.

Measuring and testing

Liquid level or depth gauge

Float

73113, 330253, G01F 2336

Patent

active

048380822

ABSTRACT:
A fuel gauge damper circuit takes a variable resistance signal from a fuel tank sending unit, develops an input voltage proportional to the variable resistance and generates a filtered average of the input voltage at the fuel gauge output. The circuit damps undesirable large swings in the input voltage caused by "sloshing" in the fuel tank. Additionally, the damper circuit features power-up initialization apparatus for eliminating erroneous gauge indications which would otherwise occur upon the initiation of vehicle engine cranking.

REFERENCES:
patent: 2356617 (1944-08-01), Rich
patent: 3638115 (1972-01-01), Grundy
patent: 3649911 (1972-03-01), Swanson
patent: 3727182 (1973-04-01), Snyder
patent: 3938117 (1976-02-01), Bozoian
patent: 4194165 (1980-03-01), Skulski
patent: 4250750 (1981-02-01), Martinec et al.
patent: 4402048 (1983-08-01), Tsuchida et al.
patent: 4470296 (1984-09-01), Kobayashi et al.
patent: 4497205 (1985-02-01), Zulauf et al.
patent: 4542348 (1985-09-01), Lucas et al.
patent: 4760736 (1988-08-01), Huynh

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