Apparatus for controlling amount of fuel-vapor purged from canis

Details Apparatus for controlling amount of fuel-vapor purged from canis Apparatus for controlling amount of fuel-vapor purged from canis

1987-10-28

1989-03-07

Miller, Carl Stuart

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

123518, F02M 3900

Patent

active

048096679

ABSTRACT:
In a fuel-vapor emission control system of an internal combustion engine having a purge control valve, a first start of the engine is detected after a fuel supply to the fuel tank and the time from when the engine is started is measured. Then, the amount of fuel-vapor purged from a canister filled with an adsorbent for capturing fuel-vapor is decreased for a predetermined time period. As a result, when the engine is started for the first time after the fuel supply, the amount of fuel-vapor purged is decreased to thereby improve the emission characteristic and the driveability of the vehicle.

REFERENCES:
patent: 4275697 (1981-06-01), Stoltman
patent: 4308842 (1982-01-01), Watanabe
patent: 4318383 (1982-03-01), Iritani
patent: 4377142 (1983-03-01), Otsuka
patent: 4467969 (1984-08-01), Matsumura
patent: 4495904 (1985-01-01), Sakaino

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