Evaporated fuel treatment device of engine

Details Evaporated fuel treatment device of engine Evaporated fuel treatment device of engine

1997-10-03

1999-11-23

Solis, Erick R.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

123520, F02M 3304

Patent

active

059881500

ABSTRACT:
An evaporated fuel treatment device comprising a purge control valve arranged between a canister and an intake passage of an engine. A drive pulse of the purge control valve is controlled by a duty ratio. When the engine operating state is one in which a large amount of evaporated fuel is produced in the fuel tank, the feedback correction coefficient is maintained at a is position deviated from the reference value so as to enable the feedback correction coefficient to change in accordance with the fluctuations of the air-fuel ratio.

REFERENCES:
patent: 5611320 (1997-03-01), Hara et al.
patent: 5634454 (1997-06-01), Fujitsu
patent: 5655507 (1997-08-01), Kawasaki
patent: 5694911 (1997-12-01), Kawamoto et al.
patent: 5699778 (1997-12-01), Muraguchi et al.
patent: 5727537 (1998-03-01), Nakagawa et al.

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