Remaining fuel amount measuring apparatus for a fuel tank

Details Remaining fuel amount measuring apparatus for a fuel tank Remaining fuel amount measuring apparatus for a fuel tank

1997-04-15

1999-01-12

Raevis, Robert

Measuring and testing

Volumetric content measuring

G01F 1700

Patent

active

058593659

ABSTRACT:
In a remaining fuel amount measuring apparatus for a fuel tank which is suited to the fuel tank designed to suppress generation of fuel vapor, a CPU actuates a piston to supply a prescribed amount of air into a pressure adjusting chamber, thereby increasing the pressure within the pressure adjusting chamber. From the Boyle's law, the increasing rate of air before air supply is inversely proportional to the volume V of the pressure adjusting chamber. Therefore, the CPU, referring to the pressure within the pressure adjusting chamber before and after the air supply, acquires the volume V of the pressure adjusting chamber, and subtracts the volume V of the pressure adjusting chamber from the internal volume of a tank body to acquire the volume of a fuel chamber, i.e. remaining fuel amount.

REFERENCES:
patent: 1508969 (1924-09-01), Guichard
patent: 3617034 (1971-11-01), Skinner et al.
patent: 3701540 (1972-10-01), Pringle
patent: 4770033 (1988-09-01), Nicolai
patent: 4984457 (1991-01-01), Morris
patent: 5315867 (1994-05-01), Hartel et al.

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