Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system
Reexamination Certificate
2007-02-12
2008-09-02
Gimie, Mahmoud (Department: 3747)
Internal-combustion engines
Charge forming device
Having fuel vapor recovery and storage system
C123S519000
Reexamination Certificate
active
07418953
ABSTRACT:
A fuel vapor treatment apparatus includes a first determiner that determines a concentration of purged fuel based on an amount of deviation from a target air-fuel ratio of an air-fuel ratio detected by a sensor provided in an exhaust pipe. A second determiner that determines the concentration of purged fuel in a state in which a purge control valve is closed. Air-fuel ratio controller controls a fuel injection quantity to bring an air-fuel ratio to the target air-fuel ratio on the basis of the concentration of the purged fuel. The air-fuel ratio controller uses the concentration of fuel determined by the second determiner when purge is started or restarted, and uses the concentration of fuel determined by the first determiner thereafter in the course of performing purge. It is possible to increase a purge ratio when purge is started or restarted.
REFERENCES:
patent: 6971375 (2005-12-01), Amano et al.
patent: 2006/0042605 (2006-03-01), Amano et al.
patent: 2006/0225714 (2006-10-01), Kano et al.
patent: 2007/0157908 (2007-07-01), Kano et al.
patent: 7-269419 (1995-10-01), None
Denso Corporation
Gimie Mahmoud
Nixon & Vanderhye PC
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