Apparatus for disposing of fuel-vapor

Details Apparatus for disposing of fuel-vapor Apparatus for disposing of fuel-vapor

1995-03-30

1996-09-24

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

123698, F02D 4104, F02D 4134

Patent

active

055580726

ABSTRACT:
Fuel-vapor evaporating from a fuel tank is led though a vapor pipe and absorbed in a charcoal canister. Though the evaporating rate is influenced by the altitude where the automobile operates, the air-fuel ratio must be controlled within the proper range. This apparatus controls a purge valve in accordance with the purge rate which is determined based on the standard atmospheric pressure and compensated in accordance with the present atmospheric pressure. Therefore, this apparatus can precisely control the amount of purged fuel and the air-fuel ratio.

REFERENCES:
patent: 4926828 (1990-05-01), Fujimoto et al.
patent: 5072712 (1991-12-01), Steinbrenner et al.
patent: 5216997 (1993-06-01), Osanai et al.
patent: 5259353 (1993-11-01), Nakai et al.
patent: 5351193 (1994-09-01), Poirier et al.

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