Vaporized fuel purge system

Details Vaporized fuel purge system Vaporized fuel purge system

2007-12-11

2007-12-11

Argenbright, T. M (Department: 3747)

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

C123S520000, C123S698000

Reexamination Certificate

active

11518308

ABSTRACT:
A feedback correction coeficient used to perform feedback-control of the fuel injection amount based on the air-fuel ratio of exhaust gas is calculated. A concentration updating based value is set based on the deviation of the oscillation center of the feedback correction coefficiect, and a vapor concentration correction coefficient corresponding to the fuel concentration of purge gas is updated using the concentration updating base value. During the period where the fuel concentration of purge gas is expected to sharply decrease, the concentration updating base value is increased.

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patent: 6079393 (2000-06-01), Tsutsumi et al.
patent: 6708682 (2004-03-01), Osanai
patent: A 7-259615 (1995-10-01), None

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