Vaporized fuel control system for vehicular internal combustion

Details Vaporized fuel control system for vehicular internal combustion Vaporized fuel control system for vehicular internal combustion

1991-12-02

1993-03-02

Miller, Carl S.

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

123494, 123516, 123 1A, F02M 3302

Patent

active

051900149

ABSTRACT:
A system according to the invention controls the vaporized amount of a blended fuel composed of gasoline and an alcohol such as methanol and contained in a fuel tank mounted at a vehicular internal combustion engine. The methanol concentration in the fuel is sensed and from the sensed value, reid vapor pressure of the fuel is presumed. The pressure in the fuel tank is then regulated at a target pressure by adjusting the amount of vaporized fuel to be removed from the fuel tank and fed to a canister in response to the presumed reid vapor pressure.

REFERENCES:
patent: 4446838 (1984-05-01), Suzuki
patent: 4949695 (1990-08-01), Uranishi
patent: 4962744 (1990-10-01), Uranishi
patent: 4962746 (1990-10-01), Miyata
patent: 5044344 (1991-09-01), Tuckey
patent: 5067468 (1991-11-01), Otowa
patent: 5088466 (1992-02-01), Tada

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