Evaporated fuel treatment system for internal combustion engine

Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means

Reexamination Certificate

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Details

C123S520000

Reexamination Certificate

active

07316228

ABSTRACT:
In an evaporated fuel treatment system, a pump is operated to flow air through a specified restriction and a sensor detects a first differential pressure across the restriction. A fuel tank, a canister, and the restriction are made to communicate with each other and an air-fuel mixture containing the evaporated fuel is purged from the canister. The mixture flows through the restriction and a second differential pressure across the restriction is detected. A differential pressure ratio and an evaporated fuel concentration used for the control of a flow rate are computed from these differential pressures. When fuel swings in a period during which the second differential pressure is detected, the pressure difference ratio is not computed and the flowrate control of the air-fuel mixture is not conducted.

REFERENCES:
patent: 5111796 (1992-05-01), Ogita
patent: 5150686 (1992-09-01), Okawa et al.
patent: 5230319 (1993-07-01), Otsuka et al.
patent: 5313925 (1994-05-01), Otsuka et al.
patent: 5732689 (1998-03-01), Ohno et al.
patent: 5775307 (1998-07-01), Isobe et al.
patent: 5826566 (1998-10-01), Isobe et al.
patent: 6047692 (2000-04-01), Toyoda
patent: 6971375 (2005-12-01), Amano et al.
patent: 2006/0042605 (2006-03-01), Amano et al.
patent: 05-018326 (1993-01-01), None

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